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-rw-r--r--src/App.svelte78
-rw-r--r--src/adapters/history/index.test.ts98
-rw-r--r--src/adapters/history/index.ts93
-rw-r--r--src/adapters/idb/index.test.ts160
-rw-r--r--src/adapters/idb/index.ts292
-rw-r--r--src/adapters/local-storage/index.test.ts224
-rw-r--r--src/adapters/local-storage/index.ts86
-rw-r--r--src/adapters/portal.test.ts49
-rw-r--r--src/adapters/portal.ts28
-rw-r--r--src/adapters/ws/index.test.ts729
-rw-r--r--src/adapters/ws/index.ts183
-rw-r--r--src/adapters/ws/logic.test.ts626
-rw-r--r--src/adapters/ws/logic.ts238
-rw-r--r--src/app.css129
-rw-r--r--src/app/App.svelte879
-rw-r--r--src/app/App.test.ts940
-rw-r--r--src/app/ErrorModal.svelte150
-rw-r--r--src/app/resolve-http-url.test.ts102
-rw-r--r--src/app/resolve-http-url.ts30
-rw-r--r--src/app/resolve-ws-url.test.ts96
-rw-r--r--src/app/resolve-ws-url.ts28
-rw-r--r--src/app/store.svelte.ts2466
-rw-r--r--src/app/store.test.ts2786
-rw-r--r--src/app/uuid.test.ts44
-rw-r--r--src/app/uuid.ts92
-rw-r--r--src/components/Table.svelte42
-rw-r--r--src/components/Table.test.ts35
-rw-r--r--src/core/chunks/groups.test.ts125
-rw-r--r--src/core/chunks/groups.ts95
-rw-r--r--src/core/chunks/image-url.test.ts46
-rw-r--r--src/core/chunks/image-url.ts35
-rw-r--r--src/core/chunks/index.ts35
-rw-r--r--src/core/chunks/reducer.test.ts1343
-rw-r--r--src/core/chunks/reducer.ts546
-rw-r--r--src/core/chunks/retry-banner.test.ts63
-rw-r--r--src/core/chunks/retry-banner.ts51
-rw-r--r--src/core/chunks/selectors.ts88
-rw-r--r--src/core/chunks/trim.test.ts235
-rw-r--r--src/core/chunks/trim.ts185
-rw-r--r--src/core/chunks/types.ts76
-rw-r--r--src/core/metrics/format.test.ts375
-rw-r--r--src/core/metrics/format.ts179
-rw-r--r--src/core/metrics/index.ts31
-rw-r--r--src/core/metrics/place.test.ts621
-rw-r--r--src/core/metrics/place.ts298
-rw-r--r--src/core/metrics/reducer.test.ts689
-rw-r--r--src/core/metrics/reducer.ts345
-rw-r--r--src/core/metrics/types.ts97
-rw-r--r--src/core/protocol/index.ts11
-rw-r--r--src/core/protocol/reducer.test.ts340
-rw-r--r--src/core/protocol/reducer.ts171
-rw-r--r--src/core/protocol/types.ts39
-rw-r--r--src/core/wire/conformance.test.ts403
-rw-r--r--src/core/wire/conformance.ts162
-rw-r--r--src/core/wire/index.ts8
-rw-r--r--src/features/cache-warming/index.ts8
-rw-r--r--src/features/cache-warming/logic/view-model.test.ts228
-rw-r--r--src/features/cache-warming/logic/view-model.ts254
-rw-r--r--src/features/cache-warming/ui/CacheWarmingView.svelte244
-rw-r--r--src/features/chat/index.ts34
-rw-r--r--src/features/chat/model-select.test.ts89
-rw-r--r--src/features/chat/model-select.ts64
-rw-r--r--src/features/chat/ports.ts43
-rw-r--r--src/features/chat/reasoning-effort.test.ts45
-rw-r--r--src/features/chat/reasoning-effort.ts66
-rw-r--r--src/features/chat/store.svelte.ts503
-rw-r--r--src/features/chat/store.test.ts2101
-rw-r--r--src/features/chat/test-helpers.ts185
-rw-r--r--src/features/chat/ui.test.ts1391
-rw-r--r--src/features/chat/ui/ChatView.svelte405
-rw-r--r--src/features/chat/ui/CompactionView.svelte154
-rw-r--r--src/features/chat/ui/Composer.svelte438
-rw-r--r--src/features/chat/ui/ModelSelector.svelte108
-rw-r--r--src/features/chat/ui/ReasoningEffortSelector.svelte75
-rw-r--r--src/features/computer/index.ts31
-rw-r--r--src/features/computer/logic/view-model.test.ts167
-rw-r--r--src/features/computer/logic/view-model.ts184
-rw-r--r--src/features/computer/ui/ComputerField.svelte211
-rw-r--r--src/features/computer/ui/ComputerSelect.svelte39
-rw-r--r--src/features/concurrency/index.ts63
-rw-r--r--src/features/concurrency/logic/types.ts119
-rw-r--r--src/features/concurrency/logic/view-model.test.ts670
-rw-r--r--src/features/concurrency/logic/view-model.ts487
-rw-r--r--src/features/concurrency/ui/AutoReduceBanner.svelte81
-rw-r--r--src/features/concurrency/ui/ConcurrencyLimitRow.svelte204
-rw-r--r--src/features/concurrency/ui/ConcurrencyView.svelte433
-rw-r--r--src/features/concurrency/ui/ConcurrencyView.test.ts559
-rw-r--r--src/features/conversation-cache/cache.test.ts326
-rw-r--r--src/features/conversation-cache/cache.ts98
-rw-r--r--src/features/conversation-cache/index.ts12
-rw-r--r--src/features/conversation-cache/logic.test.ts248
-rw-r--r--src/features/conversation-cache/logic.ts82
-rw-r--r--src/features/conversation-cache/types.ts38
-rw-r--r--src/features/cwd-lsp/index.ts14
-rw-r--r--src/features/cwd-lsp/logic/view-model.test.ts101
-rw-r--r--src/features/cwd-lsp/logic/view-model.ts130
-rw-r--r--src/features/cwd-lsp/ui/CwdField.svelte96
-rw-r--r--src/features/cwd-lsp/ui/LspStatusView.svelte129
-rw-r--r--src/features/heartbeat/index.ts50
-rw-r--r--src/features/heartbeat/logic/types.ts103
-rw-r--r--src/features/heartbeat/logic/view-model.test.ts470
-rw-r--r--src/features/heartbeat/logic/view-model.ts410
-rw-r--r--src/features/heartbeat/ui/HeartbeatView.svelte536
-rw-r--r--src/features/heartbeat/ui/PromptEditor.svelte412
-rw-r--r--src/features/heartbeat/ui/PromptEditor.test.ts167
-rw-r--r--src/features/heartbeat/ui/RunModal.svelte176
-rw-r--r--src/features/markdown/index.ts8
-rw-r--r--src/features/markdown/logic/markdown.test.ts58
-rw-r--r--src/features/markdown/logic/markdown.ts165
-rw-r--r--src/features/markdown/ui/Markdown.svelte58
-rw-r--r--src/features/markdown/ui/markdown.test.ts40
-rw-r--r--src/features/mcp/index.ts8
-rw-r--r--src/features/mcp/logic/view-model.test.ts88
-rw-r--r--src/features/mcp/logic/view-model.ts110
-rw-r--r--src/features/mcp/ui/McpStatusView.svelte133
-rw-r--r--src/features/settings/index.ts9
-rw-r--r--src/features/settings/logic/view-model.test.ts61
-rw-r--r--src/features/settings/logic/view-model.ts60
-rw-r--r--src/features/settings/ui/ChatLimitField.svelte104
-rw-r--r--src/features/settings/ui/ChatLimitField.test.ts89
-rw-r--r--src/features/smart-scroll/index.ts25
-rw-r--r--src/features/smart-scroll/logic/smart-scroll.test.ts103
-rw-r--r--src/features/smart-scroll/logic/smart-scroll.ts93
-rw-r--r--src/features/smart-scroll/ui/ScrollToBottom.svelte36
-rw-r--r--src/features/smart-scroll/ui/controller.svelte.ts140
-rw-r--r--src/features/smart-scroll/ui/controller.test.ts172
-rw-r--r--src/features/surface-host/index.ts6
-rw-r--r--src/features/surface-host/logic/message-queue.test.ts48
-rw-r--r--src/features/surface-host/logic/message-queue.ts45
-rw-r--r--src/features/surface-host/logic/plan.test.ts389
-rw-r--r--src/features/surface-host/logic/plan.ts178
-rw-r--r--src/features/surface-host/logic/table.test.ts47
-rw-r--r--src/features/surface-host/logic/table.ts54
-rw-r--r--src/features/surface-host/logic/todo.test.ts67
-rw-r--r--src/features/surface-host/logic/todo.ts49
-rw-r--r--src/features/surface-host/logic/types.ts86
-rw-r--r--src/features/surface-host/ui/Button.svelte30
-rw-r--r--src/features/surface-host/ui/MessageQueueList.svelte22
-rw-r--r--src/features/surface-host/ui/Number.svelte43
-rw-r--r--src/features/surface-host/ui/Progress.svelte12
-rw-r--r--src/features/surface-host/ui/Selector.svelte50
-rw-r--r--src/features/surface-host/ui/Stat.svelte10
-rw-r--r--src/features/surface-host/ui/StatTable.svelte21
-rw-r--r--src/features/surface-host/ui/SurfaceTable.svelte14
-rw-r--r--src/features/surface-host/ui/SurfaceView.svelte68
-rw-r--r--src/features/surface-host/ui/TodoList.svelte66
-rw-r--r--src/features/surface-host/ui/Toggle.svelte36
-rw-r--r--src/features/system-prompt/index.ts17
-rw-r--r--src/features/system-prompt/logic/view-model.test.ts90
-rw-r--r--src/features/system-prompt/logic/view-model.ts106
-rw-r--r--src/features/system-prompt/ui/SystemPromptBuilder.svelte243
-rw-r--r--src/features/tabs/index.ts28
-rw-r--r--src/features/tabs/tabs-store.svelte.ts112
-rw-r--r--src/features/tabs/tabs-store.test.ts282
-rw-r--r--src/features/tabs/tabs.test.ts348
-rw-r--r--src/features/tabs/tabs.ts110
-rw-r--r--src/features/tabs/ui.test.ts430
-rw-r--r--src/features/tabs/ui/TabBar.svelte54
-rw-r--r--src/features/tabs/ui/TabList.svelte183
-rw-r--r--src/features/views/index.ts15
-rw-r--r--src/features/views/logic/panels.test.ts55
-rw-r--r--src/features/views/logic/panels.ts49
-rw-r--r--src/features/views/ui/ViewSidebar.svelte95
-rw-r--r--src/features/views/ui/ViewSidebar.test.ts58
-rw-r--r--src/features/vision/index.ts30
-rw-r--r--src/features/vision/logic/view-model.test.ts198
-rw-r--r--src/features/vision/logic/view-model.ts189
-rw-r--r--src/features/vision/ui/VisionSettingsView.svelte192
-rw-r--r--src/features/vision/ui/VisionSettingsView.test.ts241
-rw-r--r--src/features/workspaces/adapter/http.test.ts189
-rw-r--r--src/features/workspaces/adapter/http.ts187
-rw-r--r--src/features/workspaces/index.ts21
-rw-r--r--src/features/workspaces/logic/route.test.ts77
-rw-r--r--src/features/workspaces/logic/route.ts63
-rw-r--r--src/features/workspaces/logic/view-model.test.ts179
-rw-r--r--src/features/workspaces/logic/view-model.ts71
-rw-r--r--src/features/workspaces/store.svelte.ts114
-rw-r--r--src/features/workspaces/store.test.ts145
-rw-r--r--src/features/workspaces/ui/WorkspaceCard.svelte279
-rw-r--r--src/features/workspaces/ui/WorkspaceCard.test.ts305
-rw-r--r--src/features/workspaces/ui/WorkspacesHome.svelte110
-rw-r--r--src/main.ts2
-rw-r--r--src/themes/monokai.css40
-rw-r--r--src/vite-env.d.ts3
184 files changed, 32310 insertions, 6177 deletions
diff --git a/src/App.svelte b/src/App.svelte
index ffd5543..27c9271 100644
--- a/src/App.svelte
+++ b/src/App.svelte
@@ -1,7 +1,79 @@
<script lang="ts">
- import { App, createAppStore } from "./app";
+ import { App, createAppStore } from "./app";
+ import { createHistoryAdapter } from "./adapters/history";
+ import {
+ createWorkspaceHttp,
+ createWorkspaceStore,
+ pageTitle,
+ parsePath,
+ WorkspacesHome,
+ type Route,
+ } from "./features/workspaces";
+ import { resolveHttpUrl } from "./app/resolve-http-url";
- const store = createAppStore();
+ // Parse the route BEFORE creating the store so the boot draft + active
+ // workspace are correct from the first render (no flash of the "default"
+ // workspace when deep-linking to /<id>).
+ const history = createHistoryAdapter();
+ const initialRoute = parsePath(history.path);
+ const store = createAppStore(
+ initialRoute.kind === "workspace" ? { workspaceId: initialRoute.id } : {},
+ );
+
+ // The workspace HTTP edge shares the same httpBase resolution as the store.
+ const httpBase = resolveHttpUrl(
+ {
+ VITE_HTTP_URL: import.meta.env.VITE_HTTP_URL,
+ VITE_HTTP_PORT: import.meta.env.VITE_HTTP_PORT,
+ },
+ typeof location !== "undefined" ? location : undefined,
+ );
+ const workspaceStore = createWorkspaceStore(
+ createWorkspaceHttp(httpBase, globalThis.fetch.bind(globalThis)),
+ );
+
+ let route = $state<Route>(initialRoute);
+
+ // React to back/forward + programmatic navigation.
+ $effect(() => {
+ return history.subscribe((path) => {
+ route = parsePath(path);
+ });
+ });
+
+ // On entering a workspace: scope the store to it (idempotent — skip if already
+ // scoped) + ensure the workspace exists (create-on-miss, so it appears in the
+ // home list immediately). The backend also auto-creates on `chat.send`.
+ $effect(() => {
+ if (route.kind !== "workspace") return;
+ const id = route.id;
+ if (store.activeWorkspaceId !== id) {
+ store.setActiveWorkspace(id);
+ }
+ void workspaceStore.ensure(id);
+ });
+
+ // Keep the browser tab title in sync with the route: "Dispatch" on the home
+ // page, "Dispatch: {title}" on a workspace page (falling back to the URL slug
+ // until the list loads it). Reads `route` + the workspace list, so it re-runs
+ // on navigation and again once `ensure` refreshes the list.
+ $effect(() => {
+ if (typeof document === "undefined") return;
+ document.title = pageTitle(route, workspaceStore.list);
+ });
+
+ function navigate(path: string): void {
+ history.navigate(path);
+ }
</script>
-<App {store} />
+{#if route.kind === "home"}
+ <WorkspacesHome
+ store={workspaceStore}
+ onNavigate={navigate}
+ computers={store.computers}
+ hasActive={(id) => store.workspaceHasActiveConversations(id)}
+ />
+{:else}
+ <App {store} onNavigate={navigate} />
+{/if}
diff --git a/src/adapters/history/index.test.ts b/src/adapters/history/index.test.ts
new file mode 100644
index 0000000..faab9d4
--- /dev/null
+++ b/src/adapters/history/index.test.ts
@@ -0,0 +1,98 @@
+import { describe, expect, it } from "vitest";
+import { createHistoryAdapter, type HistoryWindow } from "./index";
+
+/**
+ * A minimal in-memory `HistoryWindow` fake for deterministic tests. `pathname`
+ * is a closure variable reflected through the `location` getter; `back(url)`
+ * simulates an external navigation (back/forward): it sets the path + fires the
+ * popstate listeners.
+ */
+function fakeWindow(initial = "/"): HistoryWindow & { back(url: string): void } {
+ let pathname = initial;
+ const popstateListeners = new Set<() => void>();
+ return {
+ get location() {
+ return {
+ get pathname() {
+ return pathname;
+ },
+ };
+ },
+ history: {
+ pushState(_data, _unused, url) {
+ if (typeof url === "string") pathname = url;
+ },
+ replaceState(_data, _unused, url) {
+ if (typeof url === "string") pathname = url;
+ },
+ },
+ addEventListener(type, listener) {
+ if (type === "popstate") popstateListeners.add(listener);
+ },
+ removeEventListener(type, listener) {
+ if (type === "popstate") popstateListeners.delete(listener);
+ },
+ back(url: string) {
+ pathname = url;
+ for (const l of popstateListeners) l();
+ },
+ };
+}
+
+describe("createHistoryAdapter", () => {
+ it("reads the current path", () => {
+ const w = fakeWindow("/my-ws");
+ const h = createHistoryAdapter({ window: w });
+ expect(h.path).toBe("/my-ws");
+ });
+
+ it("navigate updates the path + notifies subscribers", () => {
+ const w = fakeWindow("/");
+ const h = createHistoryAdapter({ window: w });
+ const seen: string[] = [];
+ h.subscribe((p) => seen.push(p));
+ h.navigate("/default");
+ expect(h.path).toBe("/default");
+ expect(seen).toEqual(["/default"]);
+ });
+
+ it("replace updates the path WITHOUT notifying", () => {
+ const w = fakeWindow("/");
+ const h = createHistoryAdapter({ window: w });
+ const seen: string[] = [];
+ h.subscribe((p) => seen.push(p));
+ h.replace("/default");
+ expect(h.path).toBe("/default");
+ expect(seen).toEqual([]);
+ });
+
+ it("fires subscribers on popstate (back/forward)", () => {
+ const w = fakeWindow("/");
+ const h = createHistoryAdapter({ window: w });
+ const seen: string[] = [];
+ h.subscribe((p) => seen.push(p));
+ w.back("/my-ws");
+ expect(seen).toEqual(["/my-ws"]);
+ });
+
+ it("unsubscribe stops notifications (navigate + popstate)", () => {
+ const w = fakeWindow("/");
+ const h = createHistoryAdapter({ window: w });
+ const seen: string[] = [];
+ const unsub = h.subscribe((p) => seen.push(p));
+ unsub();
+ h.navigate("/default");
+ w.back("/other");
+ expect(seen).toEqual([]);
+ });
+
+ it("degrades to a no-op adapter when there is no location (SSR)", () => {
+ const w = { location: undefined } as unknown as HistoryWindow;
+ const h = createHistoryAdapter({ window: w });
+ expect(h.path).toBe("/");
+ const seen: string[] = [];
+ h.subscribe((p) => seen.push(p));
+ h.navigate("/default");
+ expect(seen).toEqual([]);
+ });
+});
diff --git a/src/adapters/history/index.ts b/src/adapters/history/index.ts
new file mode 100644
index 0000000..2886053
--- /dev/null
+++ b/src/adapters/history/index.ts
@@ -0,0 +1,93 @@
+/**
+ * History adapter — the injected browser effect for client-side routing.
+ *
+ * A thin wrapper over `window.history` + the `popstate` event that exposes the
+ * current pathname, a `navigate` (pushState) that updates the URL without a
+ * reload, and a `subscribe` for path changes (back/forward buttons + programmatic
+ * navigation). The route SEMANTICS (path → workspace/home) live in the
+ * `workspaces` feature's pure `parsePath`; this adapter deals only in path
+ * strings, so it stays generic + reusable.
+ *
+ * The browser edge (`window`/`history`) is INJECTED (defaults to the global) so
+ * it is testable without the DOM and degrades to a no-op when absent (SSR / no
+ * `window`).
+ */
+
+/** The minimal browser-history surface this adapter needs. */
+export interface HistoryWindow {
+ readonly location: { readonly pathname: string };
+ readonly history: {
+ pushState(data: unknown, unused: string, url?: string | URL | null): void;
+ replaceState(data: unknown, unused: string, url?: string | URL | null): void;
+ };
+ addEventListener(type: "popstate", listener: () => void): void;
+ removeEventListener(type: "popstate", listener: () => void): void;
+}
+
+export interface HistoryAdapter {
+ /** The current pathname. */
+ readonly path: string;
+ /** Push a new path (updates the URL without a reload) + notifies subscribers. */
+ navigate(path: string): void;
+ /** Replace the current path without adding a history entry (no notify). */
+ replace(path: string): void;
+ /** Subscribe to path changes (back/forward + navigate). Returns unsubscribe. */
+ subscribe(cb: (path: string) => void): () => void;
+}
+
+export interface CreateHistoryOptions {
+ /** The browser window; defaults to `globalThis`. Inject for tests. */
+ readonly window?: HistoryWindow;
+}
+
+function noop(): void {}
+
+/** A no-op adapter for when there is no `window` (SSR). */
+function createNoopHistory(): HistoryAdapter {
+ return {
+ get path() {
+ return "/";
+ },
+ navigate: noop,
+ replace: noop,
+ subscribe() {
+ return noop;
+ },
+ };
+}
+
+export function createHistoryAdapter(opts?: CreateHistoryOptions): HistoryAdapter {
+ const w = opts?.window ?? (globalThis as unknown as HistoryWindow);
+ if (w === undefined || w === null || w.location === undefined) {
+ return createNoopHistory();
+ }
+
+ const listeners = new Set<(path: string) => void>();
+ const current = (): string => w.location.pathname;
+ const emit = (): void => {
+ const p = current();
+ for (const cb of listeners) cb(p);
+ };
+
+ return {
+ get path() {
+ return current();
+ },
+ navigate(path: string): void {
+ w.history.pushState(null, "", path);
+ emit();
+ },
+ replace(path: string): void {
+ w.history.replaceState(null, "", path);
+ },
+ subscribe(cb: (path: string) => void): () => void {
+ listeners.add(cb);
+ const onPop = (): void => cb(current());
+ w.addEventListener("popstate", onPop);
+ return () => {
+ listeners.delete(cb);
+ w.removeEventListener("popstate", onPop);
+ };
+ },
+ };
+}
diff --git a/src/adapters/idb/index.test.ts b/src/adapters/idb/index.test.ts
index 12bb5ad..c05c605 100644
--- a/src/adapters/idb/index.test.ts
+++ b/src/adapters/idb/index.test.ts
@@ -4,117 +4,117 @@ import { describe, expect, it } from "vitest";
import { createIdbChunkStore } from "./index";
function textChunk(text: string): StoredChunk["chunk"] {
- return { type: "text", text };
+ return { type: "text", text };
}
function makeChunk(
- seq: number,
- text: string,
- role: StoredChunk["role"] = "assistant",
+ seq: number,
+ text: string,
+ role: StoredChunk["role"] = "assistant",
): StoredChunk {
- return { seq, role, chunk: textChunk(text) };
+ return { seq, role, chunk: textChunk(text) };
}
describe("createIdbChunkStore", () => {
- it("append then load returns chunks seq-ordered", async () => {
- const store = createIdbChunkStore({ indexedDB: new IDBFactory() });
- const chunks = [makeChunk(1, "a"), makeChunk(2, "b"), makeChunk(3, "c")];
+ it("append then load returns chunks seq-ordered", async () => {
+ const store = createIdbChunkStore({ indexedDB: new IDBFactory() });
+ const chunks = [makeChunk(1, "a"), makeChunk(2, "b"), makeChunk(3, "c")];
- await store.append("conv1", chunks);
- const loaded = await store.load("conv1");
+ await store.append("conv1", chunks);
+ const loaded = await store.load("conv1");
- expect(loaded).toHaveLength(3);
- expect(loaded[0]?.seq).toBe(1);
- expect(loaded[1]?.seq).toBe(2);
- expect(loaded[2]?.seq).toBe(3);
- expect(loaded[0]?.chunk).toEqual(textChunk("a"));
- });
+ expect(loaded).toHaveLength(3);
+ expect(loaded[0]?.seq).toBe(1);
+ expect(loaded[1]?.seq).toBe(2);
+ expect(loaded[2]?.seq).toBe(3);
+ expect(loaded[0]?.chunk).toEqual(textChunk("a"));
+ });
- it("append out-of-order still loads seq-ordered", async () => {
- const store = createIdbChunkStore({ indexedDB: new IDBFactory() });
- const chunks = [makeChunk(3, "c"), makeChunk(1, "a"), makeChunk(2, "b")];
+ it("append out-of-order still loads seq-ordered", async () => {
+ const store = createIdbChunkStore({ indexedDB: new IDBFactory() });
+ const chunks = [makeChunk(3, "c"), makeChunk(1, "a"), makeChunk(2, "b")];
- await store.append("conv1", chunks);
- const loaded = await store.load("conv1");
+ await store.append("conv1", chunks);
+ const loaded = await store.load("conv1");
- expect(loaded).toHaveLength(3);
- expect(loaded.map((c) => c.seq)).toEqual([1, 2, 3]);
- });
+ expect(loaded).toHaveLength(3);
+ expect(loaded.map((c) => c.seq)).toEqual([1, 2, 3]);
+ });
- it("append is idempotent on duplicate seq", async () => {
- const store = createIdbChunkStore({ indexedDB: new IDBFactory() });
+ it("append is idempotent on duplicate seq", async () => {
+ const store = createIdbChunkStore({ indexedDB: new IDBFactory() });
- await store.append("conv1", [makeChunk(1, "first"), makeChunk(2, "b")]);
- await store.append("conv1", [makeChunk(1, "first"), makeChunk(3, "c")]);
+ await store.append("conv1", [makeChunk(1, "first"), makeChunk(2, "b")]);
+ await store.append("conv1", [makeChunk(1, "first"), makeChunk(3, "c")]);
- const loaded = await store.load("conv1");
- expect(loaded).toHaveLength(3);
- expect(loaded.map((c) => c.seq)).toEqual([1, 2, 3]);
- expect(loaded[0]?.chunk).toEqual(textChunk("first"));
- });
+ const loaded = await store.load("conv1");
+ expect(loaded).toHaveLength(3);
+ expect(loaded.map((c) => c.seq)).toEqual([1, 2, 3]);
+ expect(loaded[0]?.chunk).toEqual(textChunk("first"));
+ });
- it("load returns [] for an absent conversation", async () => {
- const store = createIdbChunkStore({ indexedDB: new IDBFactory() });
+ it("load returns [] for an absent conversation", async () => {
+ const store = createIdbChunkStore({ indexedDB: new IDBFactory() });
- const loaded = await store.load("nonexistent");
- expect(loaded).toEqual([]);
- });
+ const loaded = await store.load("nonexistent");
+ expect(loaded).toEqual([]);
+ });
- it("delete removes a conversation", async () => {
- const store = createIdbChunkStore({ indexedDB: new IDBFactory() });
+ it("delete removes a conversation", async () => {
+ const store = createIdbChunkStore({ indexedDB: new IDBFactory() });
- await store.append("conv1", [makeChunk(1, "a")]);
- await store.append("conv2", [makeChunk(1, "b")]);
+ await store.append("conv1", [makeChunk(1, "a")]);
+ await store.append("conv2", [makeChunk(1, "b")]);
- await store.delete("conv1");
+ await store.delete("conv1");
- expect(await store.load("conv1")).toEqual([]);
- const conv2 = await store.load("conv2");
- expect(conv2).toHaveLength(1);
- expect(conv2[0]?.chunk).toEqual(textChunk("b"));
- });
+ expect(await store.load("conv1")).toEqual([]);
+ const conv2 = await store.load("conv2");
+ expect(conv2).toHaveLength(1);
+ expect(conv2[0]?.chunk).toEqual(textChunk("b"));
+ });
- it("index aggregates chunkCount and maxSeq", async () => {
- const store = createIdbChunkStore({ indexedDB: new IDBFactory() });
+ it("index aggregates chunkCount and maxSeq", async () => {
+ const store = createIdbChunkStore({ indexedDB: new IDBFactory() });
- await store.append("conv1", [makeChunk(1, "a"), makeChunk(2, "b"), makeChunk(3, "c")]);
- await store.append("conv2", [makeChunk(1, "x")]);
+ await store.append("conv1", [makeChunk(1, "a"), makeChunk(2, "b"), makeChunk(3, "c")]);
+ await store.append("conv2", [makeChunk(1, "x")]);
- const idx = await store.index();
- expect(idx).toHaveLength(2);
+ const idx = await store.index();
+ expect(idx).toHaveLength(2);
- const c1 = idx.find((e) => e.conversationId === "conv1");
- const c2 = idx.find((e) => e.conversationId === "conv2");
+ const c1 = idx.find((e) => e.conversationId === "conv1");
+ const c2 = idx.find((e) => e.conversationId === "conv2");
- expect(c1?.chunkCount).toBe(3);
- expect(c1?.maxSeq).toBe(3);
- expect(c2?.chunkCount).toBe(1);
- expect(c2?.maxSeq).toBe(1);
- });
+ expect(c1?.chunkCount).toBe(3);
+ expect(c1?.maxSeq).toBe(3);
+ expect(c2?.chunkCount).toBe(1);
+ expect(c2?.maxSeq).toBe(1);
+ });
- it("index reports lastAccess after load", async () => {
- const store = createIdbChunkStore({ indexedDB: new IDBFactory() });
+ it("index reports lastAccess after load", async () => {
+ const store = createIdbChunkStore({ indexedDB: new IDBFactory() });
- await store.append("conv1", [makeChunk(1, "a")]);
- const idx = await store.index();
+ await store.append("conv1", [makeChunk(1, "a")]);
+ const idx = await store.index();
- const entry = idx.find((e) => e.conversationId === "conv1");
- expect(entry?.lastAccess).toBeTypeOf("number");
- expect(entry?.lastAccess).toBeGreaterThan(0);
- });
+ const entry = idx.find((e) => e.conversationId === "conv1");
+ expect(entry?.lastAccess).toBeTypeOf("number");
+ expect(entry?.lastAccess).toBeGreaterThan(0);
+ });
- it("separate conversations are isolated", async () => {
- const store = createIdbChunkStore({ indexedDB: new IDBFactory() });
+ it("separate conversations are isolated", async () => {
+ const store = createIdbChunkStore({ indexedDB: new IDBFactory() });
- await store.append("conv1", [makeChunk(1, "a1"), makeChunk(2, "a2")]);
- await store.append("conv2", [makeChunk(1, "b1")]);
+ await store.append("conv1", [makeChunk(1, "a1"), makeChunk(2, "a2")]);
+ await store.append("conv2", [makeChunk(1, "b1")]);
- const loaded1 = await store.load("conv1");
- const loaded2 = await store.load("conv2");
+ const loaded1 = await store.load("conv1");
+ const loaded2 = await store.load("conv2");
- expect(loaded1).toHaveLength(2);
- expect(loaded2).toHaveLength(1);
- expect(loaded1[0]?.chunk).toEqual(textChunk("a1"));
- expect(loaded2[0]?.chunk).toEqual(textChunk("b1"));
- });
+ expect(loaded1).toHaveLength(2);
+ expect(loaded2).toHaveLength(1);
+ expect(loaded1[0]?.chunk).toEqual(textChunk("a1"));
+ expect(loaded2[0]?.chunk).toEqual(textChunk("b1"));
+ });
});
diff --git a/src/adapters/idb/index.ts b/src/adapters/idb/index.ts
index 302edb5..96b2cbc 100644
--- a/src/adapters/idb/index.ts
+++ b/src/adapters/idb/index.ts
@@ -1,7 +1,7 @@
import type { StoredChunk } from "@dispatch/wire";
import type {
- ConversationCacheIndexEntry,
- ConversationChunkStore,
+ ConversationCacheIndexEntry,
+ ConversationChunkStore,
} from "../../features/conversation-cache";
const DEFAULT_DB_NAME = "dispatch-chunk-cache";
@@ -10,172 +10,172 @@ const CHUNKS_STORE = "chunks";
const META_STORE = "meta";
interface ChunkRecord {
- conversationId: string;
- seq: number;
- role: StoredChunk["role"];
- chunk: StoredChunk["chunk"];
+ conversationId: string;
+ seq: number;
+ role: StoredChunk["role"];
+ chunk: StoredChunk["chunk"];
}
interface MetaRecord {
- conversationId: string;
- lastAccess: number;
+ conversationId: string;
+ lastAccess: number;
}
export interface CreateIdbChunkStoreOptions {
- indexedDB?: IDBFactory;
- dbName?: string;
+ indexedDB?: IDBFactory;
+ dbName?: string;
}
function requestToPromise<T>(req: IDBRequest<T>): Promise<T> {
- return new Promise<T>((resolve, reject) => {
- req.onsuccess = () => resolve(req.result);
- req.onerror = () => reject(req.error);
- });
+ return new Promise<T>((resolve, reject) => {
+ req.onsuccess = () => resolve(req.result);
+ req.onerror = () => reject(req.error);
+ });
}
function txComplete(tx: IDBTransaction): Promise<void> {
- return new Promise<void>((resolve, reject) => {
- tx.oncomplete = () => resolve();
- tx.onerror = () => reject(tx.error);
- tx.onabort = () => reject(tx.error);
- });
+ return new Promise<void>((resolve, reject) => {
+ tx.oncomplete = () => resolve();
+ tx.onerror = () => reject(tx.error);
+ tx.onabort = () => reject(tx.error);
+ });
}
function openDb(idb: IDBFactory, dbName: string): Promise<IDBDatabase> {
- return new Promise<IDBDatabase>((resolve, reject) => {
- const req = idb.open(dbName, DB_VERSION);
-
- req.onupgradeneeded = () => {
- const db = req.result;
- if (!db.objectStoreNames.contains(CHUNKS_STORE)) {
- const store = db.createObjectStore(CHUNKS_STORE, {
- keyPath: ["conversationId", "seq"],
- });
- store.createIndex("byConversation", "conversationId");
- }
- if (!db.objectStoreNames.contains(META_STORE)) {
- db.createObjectStore(META_STORE, { keyPath: "conversationId" });
- }
- };
-
- req.onsuccess = () => resolve(req.result);
- req.onerror = () => reject(req.error);
- });
+ return new Promise<IDBDatabase>((resolve, reject) => {
+ const req = idb.open(dbName, DB_VERSION);
+
+ req.onupgradeneeded = () => {
+ const db = req.result;
+ if (!db.objectStoreNames.contains(CHUNKS_STORE)) {
+ const store = db.createObjectStore(CHUNKS_STORE, {
+ keyPath: ["conversationId", "seq"],
+ });
+ store.createIndex("byConversation", "conversationId");
+ }
+ if (!db.objectStoreNames.contains(META_STORE)) {
+ db.createObjectStore(META_STORE, { keyPath: "conversationId" });
+ }
+ };
+
+ req.onsuccess = () => resolve(req.result);
+ req.onerror = () => reject(req.error);
+ });
}
function keyRangeFor(conversationId: string): IDBKeyRange {
- const lower: [string, number] = [conversationId, 0];
- const upper: [string, number] = [conversationId, Number.POSITIVE_INFINITY];
- return IDBKeyRange.bound(lower, upper);
+ const lower: [string, number] = [conversationId, 0];
+ const upper: [string, number] = [conversationId, Number.POSITIVE_INFINITY];
+ return IDBKeyRange.bound(lower, upper);
}
function chunksToStoredChunks(records: ChunkRecord[]): StoredChunk[] {
- return records.map((r) => ({ seq: r.seq, role: r.role, chunk: r.chunk }));
+ return records.map((r) => ({ seq: r.seq, role: r.role, chunk: r.chunk }));
}
export function createIdbChunkStore(opts?: CreateIdbChunkStoreOptions): ConversationChunkStore {
- const idb = opts?.indexedDB ?? globalThis.indexedDB;
- const dbName = opts?.dbName ?? DEFAULT_DB_NAME;
-
- let dbPromise: Promise<IDBDatabase> | null = null;
-
- function getDb(): Promise<IDBDatabase> {
- if (dbPromise === null) {
- dbPromise = openDb(idb, dbName);
- }
- return dbPromise;
- }
-
- return {
- async load(conversationId: string): Promise<readonly StoredChunk[]> {
- const db = await getDb();
- const tx = db.transaction(CHUNKS_STORE, "readonly");
- const store = tx.objectStore(CHUNKS_STORE);
- const range = keyRangeFor(conversationId);
- const records = await requestToPromise<ChunkRecord[]>(store.getAll(range));
- await txComplete(tx);
-
- records.sort((a, b) => a.seq - b.seq);
- return chunksToStoredChunks(records);
- },
-
- async append(conversationId: string, chunks: readonly StoredChunk[]): Promise<void> {
- if (chunks.length === 0) return;
-
- const db = await getDb();
- const tx = db.transaction([CHUNKS_STORE, META_STORE], "readwrite");
- const chunkStore = tx.objectStore(CHUNKS_STORE);
- const metaStore = tx.objectStore(META_STORE);
-
- for (const c of chunks) {
- chunkStore.put({
- conversationId,
- seq: c.seq,
- role: c.role,
- chunk: c.chunk,
- } satisfies ChunkRecord);
- }
-
- metaStore.put({
- conversationId,
- lastAccess: Date.now(),
- } satisfies MetaRecord);
-
- await txComplete(tx);
- },
-
- async delete(conversationId: string): Promise<void> {
- const db = await getDb();
- const tx = db.transaction([CHUNKS_STORE, META_STORE], "readwrite");
- const chunkStore = tx.objectStore(CHUNKS_STORE);
- const metaStore = tx.objectStore(META_STORE);
-
- chunkStore.delete(keyRangeFor(conversationId));
- metaStore.delete(conversationId);
-
- await txComplete(tx);
- },
-
- async index(): Promise<readonly ConversationCacheIndexEntry[]> {
- const db = await getDb();
- const tx = db.transaction([CHUNKS_STORE, META_STORE], "readonly");
- const chunkStore = tx.objectStore(CHUNKS_STORE);
- const metaStore = tx.objectStore(META_STORE);
-
- const allChunks = await requestToPromise<ChunkRecord[]>(chunkStore.getAll());
- const allMeta = await requestToPromise<MetaRecord[]>(metaStore.getAll());
- await txComplete(tx);
-
- const metaMap = new Map<string, number>();
- for (const m of allMeta) {
- metaMap.set(m.conversationId, m.lastAccess);
- }
-
- const grouped = new Map<string, { chunkCount: number; maxSeq: number }>();
- for (const r of allChunks) {
- const existing = grouped.get(r.conversationId);
- if (existing === undefined) {
- grouped.set(r.conversationId, { chunkCount: 1, maxSeq: r.seq });
- } else {
- existing.chunkCount++;
- if (r.seq > existing.maxSeq) {
- existing.maxSeq = r.seq;
- }
- }
- }
-
- const result: ConversationCacheIndexEntry[] = [];
- for (const [conversationId, stats] of grouped) {
- const lastAccess = metaMap.get(conversationId);
- result.push({
- conversationId,
- chunkCount: stats.chunkCount,
- maxSeq: stats.maxSeq,
- ...(lastAccess !== undefined ? { lastAccess } : {}),
- });
- }
-
- return result;
- },
- };
+ const idb = opts?.indexedDB ?? globalThis.indexedDB;
+ const dbName = opts?.dbName ?? DEFAULT_DB_NAME;
+
+ let dbPromise: Promise<IDBDatabase> | null = null;
+
+ function getDb(): Promise<IDBDatabase> {
+ if (dbPromise === null) {
+ dbPromise = openDb(idb, dbName);
+ }
+ return dbPromise;
+ }
+
+ return {
+ async load(conversationId: string): Promise<readonly StoredChunk[]> {
+ const db = await getDb();
+ const tx = db.transaction(CHUNKS_STORE, "readonly");
+ const store = tx.objectStore(CHUNKS_STORE);
+ const range = keyRangeFor(conversationId);
+ const records = await requestToPromise<ChunkRecord[]>(store.getAll(range));
+ await txComplete(tx);
+
+ records.sort((a, b) => a.seq - b.seq);
+ return chunksToStoredChunks(records);
+ },
+
+ async append(conversationId: string, chunks: readonly StoredChunk[]): Promise<void> {
+ if (chunks.length === 0) return;
+
+ const db = await getDb();
+ const tx = db.transaction([CHUNKS_STORE, META_STORE], "readwrite");
+ const chunkStore = tx.objectStore(CHUNKS_STORE);
+ const metaStore = tx.objectStore(META_STORE);
+
+ for (const c of chunks) {
+ chunkStore.put({
+ conversationId,
+ seq: c.seq,
+ role: c.role,
+ chunk: c.chunk,
+ } satisfies ChunkRecord);
+ }
+
+ metaStore.put({
+ conversationId,
+ lastAccess: Date.now(),
+ } satisfies MetaRecord);
+
+ await txComplete(tx);
+ },
+
+ async delete(conversationId: string): Promise<void> {
+ const db = await getDb();
+ const tx = db.transaction([CHUNKS_STORE, META_STORE], "readwrite");
+ const chunkStore = tx.objectStore(CHUNKS_STORE);
+ const metaStore = tx.objectStore(META_STORE);
+
+ chunkStore.delete(keyRangeFor(conversationId));
+ metaStore.delete(conversationId);
+
+ await txComplete(tx);
+ },
+
+ async index(): Promise<readonly ConversationCacheIndexEntry[]> {
+ const db = await getDb();
+ const tx = db.transaction([CHUNKS_STORE, META_STORE], "readonly");
+ const chunkStore = tx.objectStore(CHUNKS_STORE);
+ const metaStore = tx.objectStore(META_STORE);
+
+ const allChunks = await requestToPromise<ChunkRecord[]>(chunkStore.getAll());
+ const allMeta = await requestToPromise<MetaRecord[]>(metaStore.getAll());
+ await txComplete(tx);
+
+ const metaMap = new Map<string, number>();
+ for (const m of allMeta) {
+ metaMap.set(m.conversationId, m.lastAccess);
+ }
+
+ const grouped = new Map<string, { chunkCount: number; maxSeq: number }>();
+ for (const r of allChunks) {
+ const existing = grouped.get(r.conversationId);
+ if (existing === undefined) {
+ grouped.set(r.conversationId, { chunkCount: 1, maxSeq: r.seq });
+ } else {
+ existing.chunkCount++;
+ if (r.seq > existing.maxSeq) {
+ existing.maxSeq = r.seq;
+ }
+ }
+ }
+
+ const result: ConversationCacheIndexEntry[] = [];
+ for (const [conversationId, stats] of grouped) {
+ const lastAccess = metaMap.get(conversationId);
+ result.push({
+ conversationId,
+ chunkCount: stats.chunkCount,
+ maxSeq: stats.maxSeq,
+ ...(lastAccess !== undefined ? { lastAccess } : {}),
+ });
+ }
+
+ return result;
+ },
+ };
}
diff --git a/src/adapters/local-storage/index.test.ts b/src/adapters/local-storage/index.test.ts
index 57103dd..3370dd7 100644
--- a/src/adapters/local-storage/index.test.ts
+++ b/src/adapters/local-storage/index.test.ts
@@ -2,119 +2,119 @@ import { describe, expect, it } from "vitest";
import { createLocalStore } from "./index";
function createMemoryStorage(): Storage {
- const map = new Map<string, string>();
- return {
- get length() {
- return map.size;
- },
- clear() {
- map.clear();
- },
- getItem(key: string) {
- return map.get(key) ?? null;
- },
- key(index: number) {
- return [...map.keys()][index] ?? null;
- },
- removeItem(key: string) {
- map.delete(key);
- },
- setItem(key: string, value: string) {
- map.set(key, value);
- },
- };
+ const map = new Map<string, string>();
+ return {
+ get length() {
+ return map.size;
+ },
+ clear() {
+ map.clear();
+ },
+ getItem(key: string) {
+ return map.get(key) ?? null;
+ },
+ key(index: number) {
+ return [...map.keys()][index] ?? null;
+ },
+ removeItem(key: string) {
+ map.delete(key);
+ },
+ setItem(key: string, value: string) {
+ map.set(key, value);
+ },
+ };
}
describe("createLocalStore", () => {
- it("save then load round-trips an object", () => {
- const storage = createMemoryStorage();
- const store = createLocalStore<{ name: string; count: number }>("test", { storage });
-
- store.save({ name: "alice", count: 42 });
- const loaded = store.load();
-
- expect(loaded).toEqual({ name: "alice", count: 42 });
- });
-
- it("load returns null when key is absent", () => {
- const storage = createMemoryStorage();
- const store = createLocalStore<string>("missing", { storage });
-
- expect(store.load()).toBeNull();
- });
-
- it("load returns null on corrupt JSON", () => {
- const storage = createMemoryStorage();
- storage.setItem("corrupt", "{not valid json!!!");
- const store = createLocalStore<object>("corrupt", { storage });
-
- expect(store.load()).toBeNull();
- });
-
- it("clear removes the value", () => {
- const storage = createMemoryStorage();
- const store = createLocalStore<string>("key", { storage });
-
- store.save("hello");
- expect(store.load()).toBe("hello");
-
- store.clear();
- expect(store.load()).toBeNull();
- });
-
- it("save swallows a throwing setItem (quota) without throwing", () => {
- const storage = createMemoryStorage();
- const originalSetItem = storage.setItem.bind(storage);
- let callCount = 0;
- storage.setItem = (_key: string, _value: string) => {
- callCount++;
- if (callCount > 1) {
- throw new DOMException("QuotaExceededError", "QuotaExceededError");
- }
- originalSetItem(_key, _value);
- };
-
- const store = createLocalStore<number[]>("quota", { storage });
-
- // First save works
- store.save([1, 2, 3]);
- expect(store.load()).toEqual([1, 2, 3]);
-
- // Second save throws but is swallowed
- expect(() => store.save([4, 5, 6])).not.toThrow();
- });
-
- it("construction with undefined storage yields a safe no-op store", () => {
- const store = createLocalStore<string>("noop", { storage: undefined });
-
- // All operations are safe no-ops
- expect(store.load()).toBeNull();
- expect(() => store.save("hello")).not.toThrow();
- expect(() => store.clear()).not.toThrow();
- });
-
- it("round-trips arrays", () => {
- const storage = createMemoryStorage();
- const store = createLocalStore<number[]>("arr", { storage });
-
- store.save([1, 2, 3]);
- expect(store.load()).toEqual([1, 2, 3]);
- });
-
- it("round-trips nested objects", () => {
- const storage = createMemoryStorage();
- const store = createLocalStore<{ a: { b: string[] } }>("nested", { storage });
-
- store.save({ a: { b: ["x", "y"] } });
- expect(store.load()).toEqual({ a: { b: ["x", "y"] } });
- });
-
- it("overwrites previous value on repeated save", () => {
- const storage = createMemoryStorage();
- const store = createLocalStore<string>("key", { storage });
-
- store.save("first");
- store.save("second");
- expect(store.load()).toBe("second");
- });
+ it("save then load round-trips an object", () => {
+ const storage = createMemoryStorage();
+ const store = createLocalStore<{ name: string; count: number }>("test", { storage });
+
+ store.save({ name: "alice", count: 42 });
+ const loaded = store.load();
+
+ expect(loaded).toEqual({ name: "alice", count: 42 });
+ });
+
+ it("load returns null when key is absent", () => {
+ const storage = createMemoryStorage();
+ const store = createLocalStore<string>("missing", { storage });
+
+ expect(store.load()).toBeNull();
+ });
+
+ it("load returns null on corrupt JSON", () => {
+ const storage = createMemoryStorage();
+ storage.setItem("corrupt", "{not valid json!!!");
+ const store = createLocalStore<object>("corrupt", { storage });
+
+ expect(store.load()).toBeNull();
+ });
+
+ it("clear removes the value", () => {
+ const storage = createMemoryStorage();
+ const store = createLocalStore<string>("key", { storage });
+
+ store.save("hello");
+ expect(store.load()).toBe("hello");
+
+ store.clear();
+ expect(store.load()).toBeNull();
+ });
+
+ it("save swallows a throwing setItem (quota) without throwing", () => {
+ const storage = createMemoryStorage();
+ const originalSetItem = storage.setItem.bind(storage);
+ let callCount = 0;
+ storage.setItem = (_key: string, _value: string) => {
+ callCount++;
+ if (callCount > 1) {
+ throw new DOMException("QuotaExceededError", "QuotaExceededError");
+ }
+ originalSetItem(_key, _value);
+ };
+
+ const store = createLocalStore<number[]>("quota", { storage });
+
+ // First save works
+ store.save([1, 2, 3]);
+ expect(store.load()).toEqual([1, 2, 3]);
+
+ // Second save throws but is swallowed
+ expect(() => store.save([4, 5, 6])).not.toThrow();
+ });
+
+ it("construction with undefined storage yields a safe no-op store", () => {
+ const store = createLocalStore<string>("noop", { storage: undefined });
+
+ // All operations are safe no-ops
+ expect(store.load()).toBeNull();
+ expect(() => store.save("hello")).not.toThrow();
+ expect(() => store.clear()).not.toThrow();
+ });
+
+ it("round-trips arrays", () => {
+ const storage = createMemoryStorage();
+ const store = createLocalStore<number[]>("arr", { storage });
+
+ store.save([1, 2, 3]);
+ expect(store.load()).toEqual([1, 2, 3]);
+ });
+
+ it("round-trips nested objects", () => {
+ const storage = createMemoryStorage();
+ const store = createLocalStore<{ a: { b: string[] } }>("nested", { storage });
+
+ store.save({ a: { b: ["x", "y"] } });
+ expect(store.load()).toEqual({ a: { b: ["x", "y"] } });
+ });
+
+ it("overwrites previous value on repeated save", () => {
+ const storage = createMemoryStorage();
+ const store = createLocalStore<string>("key", { storage });
+
+ store.save("first");
+ store.save("second");
+ expect(store.load()).toBe("second");
+ });
});
diff --git a/src/adapters/local-storage/index.ts b/src/adapters/local-storage/index.ts
index 72135ce..9dd2ffd 100644
--- a/src/adapters/local-storage/index.ts
+++ b/src/adapters/local-storage/index.ts
@@ -1,58 +1,58 @@
export interface LocalStore<T> {
- load(): T | null;
- save(value: T): void;
- clear(): void;
+ load(): T | null;
+ save(value: T): void;
+ clear(): void;
}
export interface CreateLocalStoreOptions {
- storage?: Storage | undefined;
+ storage?: Storage | undefined;
}
function createNoopStore<T>(): LocalStore<T> {
- return {
- load() {
- return null;
- },
- save() {},
- clear() {},
- };
+ return {
+ load() {
+ return null;
+ },
+ save() {},
+ clear() {},
+ };
}
export function createLocalStore<T>(key: string, opts?: CreateLocalStoreOptions): LocalStore<T> {
- let storage: Storage | undefined;
- if (opts !== undefined && "storage" in opts) {
- storage = opts.storage;
- } else {
- storage = globalThis.localStorage;
- }
+ let storage: Storage | undefined;
+ if (opts !== undefined && "storage" in opts) {
+ storage = opts.storage;
+ } else {
+ storage = globalThis.localStorage;
+ }
- if (storage === undefined || storage === null) {
- return createNoopStore<T>();
- }
+ if (storage === undefined || storage === null) {
+ return createNoopStore<T>();
+ }
- return {
- load(): T | null {
- try {
- const raw = storage.getItem(key);
- if (raw === null) {
- return null;
- }
- return JSON.parse(raw) as T;
- } catch {
- return null;
- }
- },
+ return {
+ load(): T | null {
+ try {
+ const raw = storage.getItem(key);
+ if (raw === null) {
+ return null;
+ }
+ return JSON.parse(raw) as T;
+ } catch {
+ return null;
+ }
+ },
- save(value: T): void {
- try {
- storage.setItem(key, JSON.stringify(value));
- } catch {
- // Swallow quota / write errors — persistence is best-effort.
- }
- },
+ save(value: T): void {
+ try {
+ storage.setItem(key, JSON.stringify(value));
+ } catch {
+ // Swallow quota / write errors — persistence is best-effort.
+ }
+ },
- clear(): void {
- storage.removeItem(key);
- },
- };
+ clear(): void {
+ storage.removeItem(key);
+ },
+ };
}
diff --git a/src/adapters/portal.test.ts b/src/adapters/portal.test.ts
new file mode 100644
index 0000000..a5624d5
--- /dev/null
+++ b/src/adapters/portal.test.ts
@@ -0,0 +1,49 @@
+import { afterEach, describe, expect, it } from "vitest";
+import { portal } from "./portal";
+
+describe("portal action", () => {
+ afterEach(() => {
+ // Strip any leftover teleported nodes between tests.
+ document.querySelectorAll("body > :not(script)").forEach((n) => {
+ if (n instanceof HTMLElement) n.remove();
+ });
+ });
+
+ it("teleports the node to document.body (escaping an ancestor with transform)", () => {
+ // Simulate the sidebar: a transformed ancestor establishes a containing
+ // block for `position: fixed`.
+ const ancestor = document.createElement("div");
+ ancestor.style.transform = "translateX(0)";
+ document.body.appendChild(ancestor);
+
+ const node = document.createElement("div");
+ node.setAttribute("data-testid", "modal");
+ ancestor.appendChild(node);
+ expect(node.parentNode).toBe(ancestor);
+
+ const action = portal(node);
+
+ // After the action, the node is a direct child of <body>, not the ancestor.
+ expect(node.parentNode).toBe(document.body);
+ expect(ancestor.contains(node)).toBe(false);
+
+ action.destroy();
+
+ // On destroy the node is removed from <body>.
+ expect(document.body.contains(node)).toBe(false);
+ });
+
+ it("is a no-op (does not throw) when document is unavailable (SSR guard)", () => {
+ const originalDocument = globalThis.document;
+ // @ts-expect-error — deliberately undefined to exercise the SSR guard.
+ globalThis.document = undefined;
+ try {
+ const stub = {} as HTMLElement;
+ const action = portal(stub);
+ // Must not throw, and returns a destroy that is safe to call.
+ action.destroy();
+ } finally {
+ globalThis.document = originalDocument;
+ }
+ });
+});
diff --git a/src/adapters/portal.ts b/src/adapters/portal.ts
new file mode 100644
index 0000000..afe42e7
--- /dev/null
+++ b/src/adapters/portal.ts
@@ -0,0 +1,28 @@
+/**
+ * A Svelte `use:` action that teleports a node to `document.body`, escaping any
+ * ancestor that establishes a containing block for `position: fixed` (most
+ * commonly an ancestor with a `transform`, `filter`, `perspective`, or
+ * `will-change` — e.g. the sidebar's `transform: translateX(...)` container).
+ *
+ * Without this, a `position: fixed` modal rendered inside such an ancestor is
+ * positioned relative to the ANCESTOR, not the viewport (so it only covers the
+ * sidebar area instead of the full screen). Moving the node to `document.body`
+ * restores viewport-relative `fixed` positioning. Svelte still owns the node's
+ * lifecycle (children, bindings, events); we just relocate it + remove it on
+ * destroy as hygiene.
+ *
+ * No-op safely when there is no `document` (SSR / jsdom guards).
+ */
+export function portal(node: HTMLElement): { destroy(): void } {
+ if (typeof document === "undefined") {
+ return { destroy() {} };
+ }
+ document.body.appendChild(node);
+ return {
+ destroy() {
+ if (node.parentNode === document.body) {
+ document.body.removeChild(node);
+ }
+ },
+ };
+}
diff --git a/src/adapters/ws/index.test.ts b/src/adapters/ws/index.test.ts
index 961f919..9d821e2 100644
--- a/src/adapters/ws/index.test.ts
+++ b/src/adapters/ws/index.test.ts
@@ -3,344 +3,405 @@ import type { WebSocketLike } from "./index";
import { createSurfaceSocket } from "./index";
interface FakeSocket extends WebSocketLike {
- sent: string[];
- resolveOpen(): void;
- invokeMessage(data: string): void;
- invokeClose(): void;
+ sent: string[];
+ resolveOpen(): void;
+ invokeMessage(data: string): void;
+ invokeClose(): void;
}
function fakeSocket(): FakeSocket {
- let onopen: (() => void) | null = null;
- let onmessage: ((ev: { data: string }) => void) | null = null;
- let onclose: ((ev: { code: number; reason: string }) => void) | null = null;
- const sent: string[] = [];
-
- const ws: FakeSocket = {
- send(data: string) {
- sent.push(data);
- },
- close() {},
- get onopen() {
- return onopen;
- },
- set onopen(fn) {
- onopen = fn;
- },
- get onmessage() {
- return onmessage;
- },
- set onmessage(fn) {
- onmessage = fn;
- },
- get onclose() {
- return onclose;
- },
- set onclose(fn) {
- onclose = fn;
- },
- resolveOpen() {
- onopen?.();
- },
- invokeMessage(data: string) {
- onmessage?.({ data });
- },
- invokeClose() {
- onclose?.({ code: 1000, reason: "" });
- },
- sent,
- };
- return ws;
+ let onopen: (() => void) | null = null;
+ let onmessage: ((ev: { data: string }) => void) | null = null;
+ let onclose: ((ev: { code: number; reason: string }) => void) | null = null;
+ const sent: string[] = [];
+
+ const ws: FakeSocket = {
+ send(data: string) {
+ sent.push(data);
+ },
+ close() {},
+ get onopen() {
+ return onopen;
+ },
+ set onopen(fn) {
+ onopen = fn;
+ },
+ get onmessage() {
+ return onmessage;
+ },
+ set onmessage(fn) {
+ onmessage = fn;
+ },
+ get onclose() {
+ return onclose;
+ },
+ set onclose(fn) {
+ onclose = fn;
+ },
+ resolveOpen() {
+ onopen?.();
+ },
+ invokeMessage(data: string) {
+ onmessage?.({ data });
+ },
+ invokeClose() {
+ onclose?.({ code: 1000, reason: "" });
+ },
+ sent,
+ };
+ return ws;
}
describe("createSurfaceSocket", () => {
- it("sends queued messages once socket opens", () => {
- const ws = fakeSocket();
- const onMessage = vi.fn();
- const handle = createSurfaceSocket({
- url: "ws://test",
- onMessage,
- socketFactory: () => ws,
- });
-
- handle.send({ type: "subscribe", surfaceId: "s1" });
- handle.send({ type: "subscribe", surfaceId: "s2" });
- expect(ws.sent).toHaveLength(0);
-
- ws.resolveOpen();
- expect(ws.sent).toHaveLength(2);
- expect(JSON.parse(ws.sent[0] ?? "")).toEqual({ type: "subscribe", surfaceId: "s1" });
- expect(JSON.parse(ws.sent[1] ?? "")).toEqual({ type: "subscribe", surfaceId: "s2" });
- });
-
- it("sends immediately when socket is already open", () => {
- const ws = fakeSocket();
- const handle = createSurfaceSocket({
- url: "ws://test",
- onMessage: vi.fn(),
- socketFactory: () => ws,
- });
-
- ws.resolveOpen();
- ws.sent.length = 0;
-
- handle.send({ type: "subscribe", surfaceId: "s1" });
- expect(ws.sent).toHaveLength(1);
- });
-
- it("routes inbound messages to onMessage via parseServerMessage", () => {
- const ws = fakeSocket();
- const onMessage = vi.fn();
- createSurfaceSocket({
- url: "ws://test",
- onMessage,
- socketFactory: () => ws,
- });
-
- ws.resolveOpen();
- ws.invokeMessage(JSON.stringify({ type: "catalog", catalog: [] }));
- expect(onMessage).toHaveBeenCalledOnce();
- expect(onMessage).toHaveBeenCalledWith({ type: "catalog", catalog: [] });
- });
-
- it("drops malformed inbound messages silently", () => {
- const ws = fakeSocket();
- const onMessage = vi.fn();
- createSurfaceSocket({
- url: "ws://test",
- onMessage,
- socketFactory: () => ws,
- });
-
- ws.resolveOpen();
- ws.invokeMessage("not json");
- expect(onMessage).not.toHaveBeenCalled();
- });
-
- it("auto-reconnects on close and fires onReopen after successful reconnect", () => {
- vi.useFakeTimers();
- try {
- const sockets: ReturnType<typeof fakeSocket>[] = [];
- const onMessage = vi.fn();
- const onReopen = vi.fn();
- createSurfaceSocket({
- url: "ws://test",
- onMessage,
- onReopen,
- socketFactory: () => {
- const ws = fakeSocket();
- sockets.push(ws);
- return ws;
- },
- });
-
- expect(sockets).toHaveLength(1);
- sockets[0]?.resolveOpen();
-
- // Simulate close
- sockets[0]?.invokeClose();
-
- // Fast-forward past the backoff delay
- vi.advanceTimersByTime(600);
-
- expect(sockets).toHaveLength(2);
- // onReopen should NOT have fired yet (socket not open)
- expect(onReopen).not.toHaveBeenCalled();
-
- sockets[1]?.resolveOpen();
- expect(onReopen).toHaveBeenCalledOnce();
- } finally {
- vi.useRealTimers();
- }
- });
-
- it("does not fire onReopen on initial connect", () => {
- const ws = fakeSocket();
- const onReopen = vi.fn();
- createSurfaceSocket({
- url: "ws://test",
- onMessage: vi.fn(),
- onReopen,
- socketFactory: () => ws,
- });
-
- ws.resolveOpen();
- expect(onReopen).not.toHaveBeenCalled();
- });
-
- it("close() prevents further reconnects", () => {
- vi.useFakeTimers();
- try {
- const sockets: ReturnType<typeof fakeSocket>[] = [];
- const handle = createSurfaceSocket({
- url: "ws://test",
- onMessage: vi.fn(),
- socketFactory: () => {
- const ws = fakeSocket();
- sockets.push(ws);
- return ws;
- },
- });
-
- sockets[0]?.resolveOpen();
- sockets[0]?.invokeClose();
- handle.close();
-
- vi.advanceTimersByTime(10_000);
- expect(sockets).toHaveLength(1);
- } finally {
- vi.useRealTimers();
- }
- });
-
- it("close() prevents further sends", () => {
- const ws = fakeSocket();
- const handle = createSurfaceSocket({
- url: "ws://test",
- onMessage: vi.fn(),
- socketFactory: () => ws,
- });
-
- ws.resolveOpen();
- ws.sent.length = 0;
- handle.close();
-
- handle.send({ type: "subscribe", surfaceId: "s1" });
- expect(ws.sent).toHaveLength(0);
- });
-
- it("queues multiple sends before open and flushes in order", () => {
- const ws = fakeSocket();
- const handle = createSurfaceSocket({
- url: "ws://test",
- onMessage: vi.fn(),
- socketFactory: () => ws,
- });
-
- handle.send({ type: "subscribe", surfaceId: "a" });
- handle.send({ type: "subscribe", surfaceId: "b" });
- handle.send({ type: "invoke", surfaceId: "a", actionId: "x", payload: 1 });
- ws.resolveOpen();
-
- expect(ws.sent).toHaveLength(3);
- expect(JSON.parse(ws.sent[0] ?? "")).toEqual({ type: "subscribe", surfaceId: "a" });
- expect(JSON.parse(ws.sent[1] ?? "")).toEqual({ type: "subscribe", surfaceId: "b" });
- expect(JSON.parse(ws.sent[2] ?? "")).toEqual({
- type: "invoke",
- surfaceId: "a",
- actionId: "x",
- payload: 1,
- });
- });
-
- it("routes chat.delta to onChat", () => {
- const ws = fakeSocket();
- const onMessage = vi.fn();
- const onChat = vi.fn();
- createSurfaceSocket({
- url: "ws://test",
- onMessage,
- onChat,
- socketFactory: () => ws,
- });
-
- ws.resolveOpen();
- const event = { type: "text-delta", conversationId: "c1", turnId: "t1", delta: "hi" };
- ws.invokeMessage(JSON.stringify({ type: "chat.delta", event }));
- expect(onChat).toHaveBeenCalledOnce();
- expect(onChat).toHaveBeenCalledWith({ type: "chat.delta", event });
- expect(onMessage).not.toHaveBeenCalled();
- });
-
- it("routes chat.error to onChat", () => {
- const ws = fakeSocket();
- const onMessage = vi.fn();
- const onChat = vi.fn();
- createSurfaceSocket({
- url: "ws://test",
- onMessage,
- onChat,
- socketFactory: () => ws,
- });
-
- ws.resolveOpen();
- ws.invokeMessage(JSON.stringify({ type: "chat.error", message: "bad request" }));
- expect(onChat).toHaveBeenCalledOnce();
- expect(onChat).toHaveBeenCalledWith({ type: "chat.error", message: "bad request" });
- expect(onMessage).not.toHaveBeenCalled();
- });
-
- it("still routes surface catalog/surface to onMessage", () => {
- const ws = fakeSocket();
- const onMessage = vi.fn();
- const onChat = vi.fn();
- createSurfaceSocket({
- url: "ws://test",
- onMessage,
- onChat,
- socketFactory: () => ws,
- });
-
- ws.resolveOpen();
- ws.invokeMessage(JSON.stringify({ type: "catalog", catalog: [] }));
- expect(onMessage).toHaveBeenCalledOnce();
- expect(onMessage).toHaveBeenCalledWith({ type: "catalog", catalog: [] });
- expect(onChat).not.toHaveBeenCalled();
-
- ws.invokeMessage(
- JSON.stringify({ type: "surface", spec: { id: "s1", region: "r", title: "S", fields: [] } }),
- );
- expect(onMessage).toHaveBeenCalledTimes(2);
- });
-
- it("send accepts and serializes a chat.send message", () => {
- const ws = fakeSocket();
- const handle = createSurfaceSocket({
- url: "ws://test",
- onMessage: vi.fn(),
- socketFactory: () => ws,
- });
-
- ws.resolveOpen();
- handle.send({ type: "chat.send", message: "hello" });
- expect(ws.sent).toHaveLength(1);
- expect(JSON.parse(ws.sent[0] ?? "")).toEqual({ type: "chat.send", message: "hello" });
- });
-
- it("onChat absent is safe (surface-only usage does not throw)", () => {
- const ws = fakeSocket();
- const onMessage = vi.fn();
- createSurfaceSocket({
- url: "ws://test",
- onMessage,
- socketFactory: () => ws,
- });
-
- ws.resolveOpen();
- expect(() => {
- ws.invokeMessage(
- JSON.stringify({
- type: "chat.delta",
- event: { type: "text-delta", conversationId: "c1", turnId: "t1", delta: "x" },
- }),
- );
- ws.invokeMessage(JSON.stringify({ type: "chat.error", message: "boom" }));
- }).not.toThrow();
- expect(onMessage).not.toHaveBeenCalled();
- });
-
- it("chat send is queued until open then flushed", () => {
- const ws = fakeSocket();
- const handle = createSurfaceSocket({
- url: "ws://test",
- onMessage: vi.fn(),
- socketFactory: () => ws,
- });
-
- handle.send({ type: "chat.send", message: "queued" });
- expect(ws.sent).toHaveLength(0);
-
- ws.resolveOpen();
- expect(ws.sent).toHaveLength(1);
- expect(JSON.parse(ws.sent[0] ?? "")).toEqual({ type: "chat.send", message: "queued" });
- });
+ it("sends queued messages once socket opens", () => {
+ const ws = fakeSocket();
+ const onMessage = vi.fn();
+ const handle = createSurfaceSocket({
+ url: "ws://test",
+ onMessage,
+ socketFactory: () => ws,
+ });
+
+ handle.send({ type: "subscribe", surfaceId: "s1" });
+ handle.send({ type: "subscribe", surfaceId: "s2" });
+ expect(ws.sent).toHaveLength(0);
+
+ ws.resolveOpen();
+ expect(ws.sent).toHaveLength(2);
+ expect(JSON.parse(ws.sent[0] ?? "")).toEqual({ type: "subscribe", surfaceId: "s1" });
+ expect(JSON.parse(ws.sent[1] ?? "")).toEqual({ type: "subscribe", surfaceId: "s2" });
+ });
+
+ it("sends immediately when socket is already open", () => {
+ const ws = fakeSocket();
+ const handle = createSurfaceSocket({
+ url: "ws://test",
+ onMessage: vi.fn(),
+ socketFactory: () => ws,
+ });
+
+ ws.resolveOpen();
+ ws.sent.length = 0;
+
+ handle.send({ type: "subscribe", surfaceId: "s1" });
+ expect(ws.sent).toHaveLength(1);
+ });
+
+ it("routes inbound messages to onMessage via parseServerMessage", () => {
+ const ws = fakeSocket();
+ const onMessage = vi.fn();
+ createSurfaceSocket({
+ url: "ws://test",
+ onMessage,
+ socketFactory: () => ws,
+ });
+
+ ws.resolveOpen();
+ ws.invokeMessage(JSON.stringify({ type: "catalog", catalog: [] }));
+ expect(onMessage).toHaveBeenCalledOnce();
+ expect(onMessage).toHaveBeenCalledWith({ type: "catalog", catalog: [] });
+ });
+
+ it("drops malformed inbound messages silently", () => {
+ const ws = fakeSocket();
+ const onMessage = vi.fn();
+ createSurfaceSocket({
+ url: "ws://test",
+ onMessage,
+ socketFactory: () => ws,
+ });
+
+ ws.resolveOpen();
+ ws.invokeMessage("not json");
+ expect(onMessage).not.toHaveBeenCalled();
+ });
+
+ it("auto-reconnects on close and fires onReopen after successful reconnect", () => {
+ vi.useFakeTimers();
+ try {
+ const sockets: ReturnType<typeof fakeSocket>[] = [];
+ const onMessage = vi.fn();
+ const onReopen = vi.fn();
+ createSurfaceSocket({
+ url: "ws://test",
+ onMessage,
+ onReopen,
+ socketFactory: () => {
+ const ws = fakeSocket();
+ sockets.push(ws);
+ return ws;
+ },
+ });
+
+ expect(sockets).toHaveLength(1);
+ sockets[0]?.resolveOpen();
+
+ // Simulate close
+ sockets[0]?.invokeClose();
+
+ // Fast-forward past the backoff delay
+ vi.advanceTimersByTime(600);
+
+ expect(sockets).toHaveLength(2);
+ // onReopen should NOT have fired yet (socket not open)
+ expect(onReopen).not.toHaveBeenCalled();
+
+ sockets[1]?.resolveOpen();
+ expect(onReopen).toHaveBeenCalledOnce();
+ } finally {
+ vi.useRealTimers();
+ }
+ });
+
+ it("does not fire onReopen on initial connect", () => {
+ const ws = fakeSocket();
+ const onReopen = vi.fn();
+ createSurfaceSocket({
+ url: "ws://test",
+ onMessage: vi.fn(),
+ onReopen,
+ socketFactory: () => ws,
+ });
+
+ ws.resolveOpen();
+ expect(onReopen).not.toHaveBeenCalled();
+ });
+
+ it("close() prevents further reconnects", () => {
+ vi.useFakeTimers();
+ try {
+ const sockets: ReturnType<typeof fakeSocket>[] = [];
+ const handle = createSurfaceSocket({
+ url: "ws://test",
+ onMessage: vi.fn(),
+ socketFactory: () => {
+ const ws = fakeSocket();
+ sockets.push(ws);
+ return ws;
+ },
+ });
+
+ sockets[0]?.resolveOpen();
+ sockets[0]?.invokeClose();
+ handle.close();
+
+ vi.advanceTimersByTime(10_000);
+ expect(sockets).toHaveLength(1);
+ } finally {
+ vi.useRealTimers();
+ }
+ });
+
+ it("close() prevents further sends", () => {
+ const ws = fakeSocket();
+ const handle = createSurfaceSocket({
+ url: "ws://test",
+ onMessage: vi.fn(),
+ socketFactory: () => ws,
+ });
+
+ ws.resolveOpen();
+ ws.sent.length = 0;
+ handle.close();
+
+ handle.send({ type: "subscribe", surfaceId: "s1" });
+ expect(ws.sent).toHaveLength(0);
+ });
+
+ it("queues multiple sends before open and flushes in order", () => {
+ const ws = fakeSocket();
+ const handle = createSurfaceSocket({
+ url: "ws://test",
+ onMessage: vi.fn(),
+ socketFactory: () => ws,
+ });
+
+ handle.send({ type: "subscribe", surfaceId: "a" });
+ handle.send({ type: "subscribe", surfaceId: "b" });
+ handle.send({ type: "invoke", surfaceId: "a", actionId: "x", payload: 1 });
+ ws.resolveOpen();
+
+ expect(ws.sent).toHaveLength(3);
+ expect(JSON.parse(ws.sent[0] ?? "")).toEqual({ type: "subscribe", surfaceId: "a" });
+ expect(JSON.parse(ws.sent[1] ?? "")).toEqual({ type: "subscribe", surfaceId: "b" });
+ expect(JSON.parse(ws.sent[2] ?? "")).toEqual({
+ type: "invoke",
+ surfaceId: "a",
+ actionId: "x",
+ payload: 1,
+ });
+ });
+
+ it("routes chat.delta to onChat", () => {
+ const ws = fakeSocket();
+ const onMessage = vi.fn();
+ const onChat = vi.fn();
+ createSurfaceSocket({
+ url: "ws://test",
+ onMessage,
+ onChat,
+ socketFactory: () => ws,
+ });
+
+ ws.resolveOpen();
+ const event = { type: "text-delta", conversationId: "c1", turnId: "t1", delta: "hi" };
+ ws.invokeMessage(JSON.stringify({ type: "chat.delta", event }));
+ expect(onChat).toHaveBeenCalledOnce();
+ expect(onChat).toHaveBeenCalledWith({ type: "chat.delta", event });
+ expect(onMessage).not.toHaveBeenCalled();
+ });
+
+ it("routes chat.error to onChat", () => {
+ const ws = fakeSocket();
+ const onMessage = vi.fn();
+ const onChat = vi.fn();
+ createSurfaceSocket({
+ url: "ws://test",
+ onMessage,
+ onChat,
+ socketFactory: () => ws,
+ });
+
+ ws.resolveOpen();
+ ws.invokeMessage(JSON.stringify({ type: "chat.error", message: "bad request" }));
+ expect(onChat).toHaveBeenCalledOnce();
+ expect(onChat).toHaveBeenCalledWith({ type: "chat.error", message: "bad request" });
+ expect(onMessage).not.toHaveBeenCalled();
+ });
+
+ it("routes conversation.open to onConversationOpen", () => {
+ const ws = fakeSocket();
+ const onMessage = vi.fn();
+ const onChat = vi.fn();
+ const onConversationOpen = vi.fn();
+ createSurfaceSocket({
+ url: "ws://test",
+ onMessage,
+ onChat,
+ onConversationOpen,
+ socketFactory: () => ws,
+ });
+
+ ws.resolveOpen();
+ ws.invokeMessage(
+ JSON.stringify({
+ type: "conversation.open",
+ conversationId: "c1",
+ workspaceId: "w1",
+ }),
+ );
+ expect(onConversationOpen).toHaveBeenCalledOnce();
+ expect(onConversationOpen).toHaveBeenCalledWith({
+ type: "conversation.open",
+ conversationId: "c1",
+ workspaceId: "w1",
+ });
+ expect(onMessage).not.toHaveBeenCalled();
+ expect(onChat).not.toHaveBeenCalled();
+ });
+
+ it("routes conversation.statusChanged to onConversationStatusChanged", () => {
+ const ws = fakeSocket();
+ const onMessage = vi.fn();
+ const onConversationStatusChanged = vi.fn();
+ createSurfaceSocket({
+ url: "ws://test",
+ onMessage,
+ onConversationStatusChanged,
+ socketFactory: () => ws,
+ });
+
+ ws.resolveOpen();
+ ws.invokeMessage(
+ JSON.stringify({
+ type: "conversation.statusChanged",
+ conversationId: "c1",
+ status: "active",
+ workspaceId: "w1",
+ }),
+ );
+ expect(onConversationStatusChanged).toHaveBeenCalledOnce();
+ expect(onConversationStatusChanged).toHaveBeenCalledWith({
+ type: "conversation.statusChanged",
+ conversationId: "c1",
+ status: "active",
+ workspaceId: "w1",
+ });
+ expect(onMessage).not.toHaveBeenCalled();
+ });
+
+ it("still routes surface catalog/surface to onMessage", () => {
+ const ws = fakeSocket();
+ const onMessage = vi.fn();
+ const onChat = vi.fn();
+ createSurfaceSocket({
+ url: "ws://test",
+ onMessage,
+ onChat,
+ socketFactory: () => ws,
+ });
+
+ ws.resolveOpen();
+ ws.invokeMessage(JSON.stringify({ type: "catalog", catalog: [] }));
+ expect(onMessage).toHaveBeenCalledOnce();
+ expect(onMessage).toHaveBeenCalledWith({ type: "catalog", catalog: [] });
+ expect(onChat).not.toHaveBeenCalled();
+
+ ws.invokeMessage(
+ JSON.stringify({ type: "surface", spec: { id: "s1", region: "r", title: "S", fields: [] } }),
+ );
+ expect(onMessage).toHaveBeenCalledTimes(2);
+ });
+
+ it("send accepts and serializes a chat.send message", () => {
+ const ws = fakeSocket();
+ const handle = createSurfaceSocket({
+ url: "ws://test",
+ onMessage: vi.fn(),
+ socketFactory: () => ws,
+ });
+
+ ws.resolveOpen();
+ handle.send({ type: "chat.send", message: "hello" });
+ expect(ws.sent).toHaveLength(1);
+ expect(JSON.parse(ws.sent[0] ?? "")).toEqual({ type: "chat.send", message: "hello" });
+ });
+
+ it("onChat absent is safe (surface-only usage does not throw)", () => {
+ const ws = fakeSocket();
+ const onMessage = vi.fn();
+ createSurfaceSocket({
+ url: "ws://test",
+ onMessage,
+ socketFactory: () => ws,
+ });
+
+ ws.resolveOpen();
+ expect(() => {
+ ws.invokeMessage(
+ JSON.stringify({
+ type: "chat.delta",
+ event: { type: "text-delta", conversationId: "c1", turnId: "t1", delta: "x" },
+ }),
+ );
+ ws.invokeMessage(JSON.stringify({ type: "chat.error", message: "boom" }));
+ }).not.toThrow();
+ expect(onMessage).not.toHaveBeenCalled();
+ });
+
+ it("chat send is queued until open then flushed", () => {
+ const ws = fakeSocket();
+ const handle = createSurfaceSocket({
+ url: "ws://test",
+ onMessage: vi.fn(),
+ socketFactory: () => ws,
+ });
+
+ handle.send({ type: "chat.send", message: "queued" });
+ expect(ws.sent).toHaveLength(0);
+
+ ws.resolveOpen();
+ expect(ws.sent).toHaveLength(1);
+ expect(JSON.parse(ws.sent[0] ?? "")).toEqual({ type: "chat.send", message: "queued" });
+ });
});
diff --git a/src/adapters/ws/index.ts b/src/adapters/ws/index.ts
index 54a501c..1309db0 100644
--- a/src/adapters/ws/index.ts
+++ b/src/adapters/ws/index.ts
@@ -1,108 +1,123 @@
import type {
- ChatDeltaMessage,
- ChatErrorMessage,
- WsClientMessage,
+ ChatDeltaMessage,
+ ChatErrorMessage,
+ ConversationCompactedMessage,
+ ConversationOpenMessage,
+ ConversationStatusChangedMessage,
+ WsClientMessage,
} from "@dispatch/transport-contract";
import type { SurfaceServerMessage } from "@dispatch/ui-contract";
import { nextBackoffMs, parseServerMessage, serialize } from "./logic";
export interface WebSocketLike {
- send(data: string): void;
- close(): void;
- onopen: (() => void) | null;
- onmessage: ((ev: { data: string }) => void) | null;
- onclose: ((ev: { code: number; reason: string }) => void) | null;
+ send(data: string): void;
+ close(): void;
+ onopen: (() => void) | null;
+ onmessage: ((ev: { data: string }) => void) | null;
+ onclose: ((ev: { code: number; reason: string }) => void) | null;
}
export interface SurfaceSocketOptions {
- url: string;
- onMessage: (msg: SurfaceServerMessage) => void;
- onChat?: (msg: ChatDeltaMessage | ChatErrorMessage) => void;
- onReopen?: () => void;
- socketFactory?: (url: string) => WebSocketLike;
+ url: string;
+ onMessage: (msg: SurfaceServerMessage) => void;
+ onChat?: (msg: ChatDeltaMessage | ChatErrorMessage) => void;
+ /** Broadcast when a conversation is "opened" (e.g. CLI `--open` flag). */
+ onConversationOpen?: (msg: ConversationOpenMessage) => void;
+ /** Broadcast when a conversation's lifecycle status changes (active/idle/closed). */
+ onConversationStatusChanged?: (msg: ConversationStatusChangedMessage) => void;
+ /** Broadcast when a conversation's history has been compacted (reload needed). */
+ onConversationCompacted?: (msg: ConversationCompactedMessage) => void;
+ onReopen?: () => void;
+ socketFactory?: (url: string) => WebSocketLike;
}
export interface SurfaceSocketHandle {
- send(msg: WsClientMessage): void;
- close(): void;
+ send(msg: WsClientMessage): void;
+ close(): void;
}
export function createSurfaceSocket(opts: SurfaceSocketOptions): SurfaceSocketHandle {
- const factory =
- opts.socketFactory ?? ((url: string) => new WebSocket(url) as unknown as WebSocketLike);
+ const factory =
+ opts.socketFactory ?? ((url: string) => new WebSocket(url) as unknown as WebSocketLike);
- let socket: WebSocketLike | null = null;
- let disposed = false;
- let reconnectAttempt = 0;
- let reconnectTimer: ReturnType<typeof setTimeout> | null = null;
- let isOpen = false;
- const queue: string[] = [];
+ let socket: WebSocketLike | null = null;
+ let disposed = false;
+ let reconnectAttempt = 0;
+ let reconnectTimer: ReturnType<typeof setTimeout> | null = null;
+ let isOpen = false;
+ const queue: string[] = [];
- function connect(isReconnect: boolean): void {
- socket = factory(opts.url);
- isOpen = false;
+ function connect(isReconnect: boolean): void {
+ socket = factory(opts.url);
+ isOpen = false;
- socket.onopen = () => {
- if (disposed) return;
- isOpen = true;
- reconnectAttempt = 0;
- for (const raw of queue.splice(0)) {
- socket?.send(raw);
- }
- if (isReconnect) {
- opts.onReopen?.();
- }
- };
+ socket.onopen = () => {
+ if (disposed) return;
+ isOpen = true;
+ reconnectAttempt = 0;
+ for (const raw of queue.splice(0)) {
+ socket?.send(raw);
+ }
+ if (isReconnect) {
+ opts.onReopen?.();
+ }
+ };
- socket.onmessage = (ev) => {
- if (disposed) return;
- const msg = parseServerMessage(ev.data);
- if (msg !== null) {
- if (msg.type === "chat.delta" || msg.type === "chat.error") {
- opts.onChat?.(msg as ChatDeltaMessage | ChatErrorMessage);
- } else {
- opts.onMessage(msg as SurfaceServerMessage);
- }
- }
- };
+ socket.onmessage = (ev) => {
+ if (disposed) return;
+ const msg = parseServerMessage(ev.data);
+ if (msg !== null) {
+ if (msg.type === "chat.delta" || msg.type === "chat.error") {
+ opts.onChat?.(msg as ChatDeltaMessage | ChatErrorMessage);
+ } else if (msg.type === "conversation.open") {
+ opts.onConversationOpen?.(msg as ConversationOpenMessage);
+ } else if (msg.type === "conversation.statusChanged") {
+ opts.onConversationStatusChanged?.(msg as ConversationStatusChangedMessage);
+ } else if (msg.type === "conversation.compacted") {
+ opts.onConversationCompacted?.(msg as ConversationCompactedMessage);
+ } else {
+ opts.onMessage(msg as SurfaceServerMessage);
+ }
+ }
+ };
- socket.onclose = () => {
- if (disposed) return;
- isOpen = false;
- scheduleReconnect();
- };
- }
+ socket.onclose = () => {
+ if (disposed) return;
+ isOpen = false;
+ scheduleReconnect();
+ };
+ }
- function scheduleReconnect(): void {
- const delay = nextBackoffMs(reconnectAttempt);
- reconnectAttempt++;
- reconnectTimer = setTimeout(() => {
- reconnectTimer = null;
- if (disposed) return;
- connect(true);
- }, delay);
- }
+ function scheduleReconnect(): void {
+ const delay = nextBackoffMs(reconnectAttempt);
+ reconnectAttempt++;
+ reconnectTimer = setTimeout(() => {
+ reconnectTimer = null;
+ if (disposed) return;
+ connect(true);
+ }, delay);
+ }
- connect(false);
+ connect(false);
- return {
- send(msg: WsClientMessage): void {
- if (disposed) return;
- const raw = serialize(msg);
- if (isOpen) {
- socket?.send(raw);
- } else {
- queue.push(raw);
- }
- },
- close(): void {
- disposed = true;
- if (reconnectTimer !== null) {
- clearTimeout(reconnectTimer);
- reconnectTimer = null;
- }
- socket?.close();
- socket = null;
- },
- };
+ return {
+ send(msg: WsClientMessage): void {
+ if (disposed) return;
+ const raw = serialize(msg);
+ if (isOpen) {
+ socket?.send(raw);
+ } else {
+ queue.push(raw);
+ }
+ },
+ close(): void {
+ disposed = true;
+ if (reconnectTimer !== null) {
+ clearTimeout(reconnectTimer);
+ reconnectTimer = null;
+ }
+ socket?.close();
+ socket = null;
+ },
+ };
}
diff --git a/src/adapters/ws/logic.test.ts b/src/adapters/ws/logic.test.ts
index 546afe1..dd2b773 100644
--- a/src/adapters/ws/logic.test.ts
+++ b/src/adapters/ws/logic.test.ts
@@ -2,253 +2,399 @@ import { describe, expect, it } from "vitest";
import { nextBackoffMs, parseServerMessage, serialize } from "./logic";
describe("serialize", () => {
- it("serializes a subscribe message", () => {
- const msg = { type: "subscribe" as const, surfaceId: "s1" };
- expect(JSON.parse(serialize(msg))).toEqual(msg);
- });
-
- it("serializes an unsubscribe message", () => {
- const msg = { type: "unsubscribe" as const, surfaceId: "s1" };
- expect(JSON.parse(serialize(msg))).toEqual(msg);
- });
-
- it("serializes an invoke message with payload", () => {
- const msg = { type: "invoke" as const, surfaceId: "s1", actionId: "toggle", payload: true };
- expect(JSON.parse(serialize(msg))).toEqual(msg);
- });
-
- it("serializes an invoke message without payload", () => {
- const msg = { type: "invoke" as const, surfaceId: "s1", actionId: "click" };
- expect(JSON.parse(serialize(msg))).toEqual(msg);
- });
-
- it("serializes a chat.send message", () => {
- const msg = { type: "chat.send" as const, message: "hello" };
- expect(JSON.parse(serialize(msg))).toEqual(msg);
- });
-
- it("serializes a chat.send message with all fields", () => {
- const msg = {
- type: "chat.send" as const,
- conversationId: "c1",
- message: "hello",
- model: "openai/gpt-4",
- cwd: "/tmp",
- };
- expect(JSON.parse(serialize(msg))).toEqual(msg);
- });
+ it("serializes a subscribe message", () => {
+ const msg = { type: "subscribe" as const, surfaceId: "s1" };
+ expect(JSON.parse(serialize(msg))).toEqual(msg);
+ });
+
+ it("serializes an unsubscribe message", () => {
+ const msg = { type: "unsubscribe" as const, surfaceId: "s1" };
+ expect(JSON.parse(serialize(msg))).toEqual(msg);
+ });
+
+ it("serializes an invoke message with payload", () => {
+ const msg = { type: "invoke" as const, surfaceId: "s1", actionId: "toggle", payload: true };
+ expect(JSON.parse(serialize(msg))).toEqual(msg);
+ });
+
+ it("serializes an invoke message without payload", () => {
+ const msg = { type: "invoke" as const, surfaceId: "s1", actionId: "click" };
+ expect(JSON.parse(serialize(msg))).toEqual(msg);
+ });
+
+ it("serializes a chat.send message", () => {
+ const msg = { type: "chat.send" as const, message: "hello" };
+ expect(JSON.parse(serialize(msg))).toEqual(msg);
+ });
+
+ it("serializes a chat.send message with all fields", () => {
+ const msg = {
+ type: "chat.send" as const,
+ conversationId: "c1",
+ message: "hello",
+ model: "openai/gpt-4",
+ cwd: "/tmp",
+ };
+ expect(JSON.parse(serialize(msg))).toEqual(msg);
+ });
});
describe("parseServerMessage", () => {
- it("parses a catalog message", () => {
- const data = JSON.stringify({
- type: "catalog",
- catalog: [{ id: "s1", region: "r", title: "S1" }],
- });
- const result = parseServerMessage(data);
- expect(result).toEqual({
- type: "catalog",
- catalog: [{ id: "s1", region: "r", title: "S1" }],
- });
- });
-
- it("parses a surface message", () => {
- const data = JSON.stringify({
- type: "surface",
- spec: { id: "s1", region: "r", title: "S1", fields: [] },
- });
- const result = parseServerMessage(data);
- expect(result).toEqual({
- type: "surface",
- spec: { id: "s1", region: "r", title: "S1", fields: [] },
- });
- });
-
- it("parses an update message", () => {
- const data = JSON.stringify({
- type: "update",
- update: {
- surfaceId: "s1",
- spec: { id: "s1", region: "r", title: "S1", fields: [] },
- },
- });
- const result = parseServerMessage(data);
- expect(result).toEqual({
- type: "update",
- update: {
- surfaceId: "s1",
- spec: { id: "s1", region: "r", title: "S1", fields: [] },
- },
- });
- });
-
- it("parses an error message with surfaceId", () => {
- const data = JSON.stringify({ type: "error", surfaceId: "s1", message: "boom" });
- const result = parseServerMessage(data);
- expect(result).toEqual({ type: "error", surfaceId: "s1", message: "boom" });
- });
-
- it("parses an error message without surfaceId", () => {
- const data = JSON.stringify({ type: "error", message: "global boom" });
- const result = parseServerMessage(data);
- expect(result).toEqual({ type: "error", message: "global boom" });
- });
-
- it("returns null for malformed JSON", () => {
- expect(parseServerMessage("not json")).toBeNull();
- expect(parseServerMessage("{broken")).toBeNull();
- expect(parseServerMessage("")).toBeNull();
- });
-
- it("returns null for non-object JSON", () => {
- expect(parseServerMessage("42")).toBeNull();
- expect(parseServerMessage('"hello"')).toBeNull();
- expect(parseServerMessage("null")).toBeNull();
- expect(parseServerMessage("true")).toBeNull();
- expect(parseServerMessage("[1,2,3]")).toBeNull();
- });
-
- it("returns null for unknown type", () => {
- expect(parseServerMessage(JSON.stringify({ type: "unknown" }))).toBeNull();
- });
-
- it("returns null when type is missing", () => {
- expect(parseServerMessage(JSON.stringify({ foo: "bar" }))).toBeNull();
- });
-
- it("returns null when type is not a string", () => {
- expect(parseServerMessage(JSON.stringify({ type: 42 }))).toBeNull();
- });
-
- it("returns null for catalog with non-array catalog field", () => {
- expect(parseServerMessage(JSON.stringify({ type: "catalog", catalog: "nope" }))).toBeNull();
- });
-
- it("returns null for surface with missing spec fields", () => {
- expect(parseServerMessage(JSON.stringify({ type: "surface", spec: { id: "s1" } }))).toBeNull();
- });
-
- it("returns null for surface with non-object spec", () => {
- expect(parseServerMessage(JSON.stringify({ type: "surface", spec: "nope" }))).toBeNull();
- });
-
- it("returns null for update with missing update field", () => {
- expect(parseServerMessage(JSON.stringify({ type: "update" }))).toBeNull();
- });
-
- it("returns null for update with invalid spec", () => {
- expect(
- parseServerMessage(JSON.stringify({ type: "update", update: { surfaceId: "s1", spec: {} } })),
- ).toBeNull();
- });
-
- it("returns null for error with non-string message", () => {
- expect(parseServerMessage(JSON.stringify({ type: "error", message: 42 }))).toBeNull();
- });
-
- it("returns null for error with invalid surfaceId type", () => {
- expect(
- parseServerMessage(JSON.stringify({ type: "error", surfaceId: 42, message: "boom" })),
- ).toBeNull();
- });
-
- it("parses a chat.delta message", () => {
- const event = { type: "text-delta", conversationId: "c1", turnId: "t1", delta: "hello" };
- const data = JSON.stringify({ type: "chat.delta", event });
- const result = parseServerMessage(data);
- expect(result).toEqual({ type: "chat.delta", event });
- });
-
- it("parses a chat.error message with conversationId", () => {
- const data = JSON.stringify({
- type: "chat.error",
- conversationId: "c1",
- message: "bad request",
- });
- const result = parseServerMessage(data);
- expect(result).toEqual({ type: "chat.error", conversationId: "c1", message: "bad request" });
- });
-
- it("parses a chat.error message without conversationId", () => {
- const data = JSON.stringify({ type: "chat.error", message: "no conversation" });
- const result = parseServerMessage(data);
- expect(result).toEqual({ type: "chat.error", message: "no conversation" });
- });
-
- it("returns null for chat.delta with non-object event", () => {
- expect(parseServerMessage(JSON.stringify({ type: "chat.delta", event: "nope" }))).toBeNull();
- });
-
- it("returns null for chat.delta with missing event.type", () => {
- expect(parseServerMessage(JSON.stringify({ type: "chat.delta", event: {} }))).toBeNull();
- });
-
- it("returns null for chat.error with non-string message", () => {
- expect(parseServerMessage(JSON.stringify({ type: "chat.error", message: 42 }))).toBeNull();
- });
-
- it("returns null for chat.error with invalid conversationId type", () => {
- expect(
- parseServerMessage(
- JSON.stringify({ type: "chat.error", conversationId: 42, message: "boom" }),
- ),
- ).toBeNull();
- });
+ it("parses a catalog message", () => {
+ const data = JSON.stringify({
+ type: "catalog",
+ catalog: [{ id: "s1", region: "r", title: "S1" }],
+ });
+ const result = parseServerMessage(data);
+ expect(result).toEqual({
+ type: "catalog",
+ catalog: [{ id: "s1", region: "r", title: "S1" }],
+ });
+ });
+
+ it("parses a surface message", () => {
+ const data = JSON.stringify({
+ type: "surface",
+ spec: { id: "s1", region: "r", title: "S1", fields: [] },
+ });
+ const result = parseServerMessage(data);
+ expect(result).toEqual({
+ type: "surface",
+ spec: { id: "s1", region: "r", title: "S1", fields: [] },
+ });
+ });
+
+ it("preserves the conversationId echo on a scoped surface message", () => {
+ const data = JSON.stringify({
+ type: "surface",
+ spec: { id: "s1", region: "r", title: "S1", fields: [] },
+ conversationId: "c1",
+ });
+ const result = parseServerMessage(data);
+ expect(result).toEqual({
+ type: "surface",
+ spec: { id: "s1", region: "r", title: "S1", fields: [] },
+ conversationId: "c1",
+ });
+ });
+
+ it("rejects a surface message with a non-string conversationId", () => {
+ const data = JSON.stringify({
+ type: "surface",
+ spec: { id: "s1", region: "r", title: "S1", fields: [] },
+ conversationId: 42,
+ });
+ expect(parseServerMessage(data)).toBeNull();
+ });
+
+ it("parses an update message", () => {
+ const data = JSON.stringify({
+ type: "update",
+ update: {
+ surfaceId: "s1",
+ spec: { id: "s1", region: "r", title: "S1", fields: [] },
+ },
+ });
+ const result = parseServerMessage(data);
+ expect(result).toEqual({
+ type: "update",
+ update: {
+ surfaceId: "s1",
+ spec: { id: "s1", region: "r", title: "S1", fields: [] },
+ },
+ });
+ });
+
+ it("parses an error message with surfaceId", () => {
+ const data = JSON.stringify({ type: "error", surfaceId: "s1", message: "boom" });
+ const result = parseServerMessage(data);
+ expect(result).toEqual({ type: "error", surfaceId: "s1", message: "boom" });
+ });
+
+ it("parses an error message without surfaceId", () => {
+ const data = JSON.stringify({ type: "error", message: "global boom" });
+ const result = parseServerMessage(data);
+ expect(result).toEqual({ type: "error", message: "global boom" });
+ });
+
+ it("returns null for malformed JSON", () => {
+ expect(parseServerMessage("not json")).toBeNull();
+ expect(parseServerMessage("{broken")).toBeNull();
+ expect(parseServerMessage("")).toBeNull();
+ });
+
+ it("returns null for non-object JSON", () => {
+ expect(parseServerMessage("42")).toBeNull();
+ expect(parseServerMessage('"hello"')).toBeNull();
+ expect(parseServerMessage("null")).toBeNull();
+ expect(parseServerMessage("true")).toBeNull();
+ expect(parseServerMessage("[1,2,3]")).toBeNull();
+ });
+
+ it("returns null for unknown type", () => {
+ expect(parseServerMessage(JSON.stringify({ type: "unknown" }))).toBeNull();
+ });
+
+ it("returns null when type is missing", () => {
+ expect(parseServerMessage(JSON.stringify({ foo: "bar" }))).toBeNull();
+ });
+
+ it("returns null when type is not a string", () => {
+ expect(parseServerMessage(JSON.stringify({ type: 42 }))).toBeNull();
+ });
+
+ it("returns null for catalog with non-array catalog field", () => {
+ expect(parseServerMessage(JSON.stringify({ type: "catalog", catalog: "nope" }))).toBeNull();
+ });
+
+ it("returns null for surface with missing spec fields", () => {
+ expect(parseServerMessage(JSON.stringify({ type: "surface", spec: { id: "s1" } }))).toBeNull();
+ });
+
+ it("returns null for surface with non-object spec", () => {
+ expect(parseServerMessage(JSON.stringify({ type: "surface", spec: "nope" }))).toBeNull();
+ });
+
+ it("returns null for update with missing update field", () => {
+ expect(parseServerMessage(JSON.stringify({ type: "update" }))).toBeNull();
+ });
+
+ it("returns null for update with invalid spec", () => {
+ expect(
+ parseServerMessage(JSON.stringify({ type: "update", update: { surfaceId: "s1", spec: {} } })),
+ ).toBeNull();
+ });
+
+ it("returns null for error with non-string message", () => {
+ expect(parseServerMessage(JSON.stringify({ type: "error", message: 42 }))).toBeNull();
+ });
+
+ it("returns null for error with invalid surfaceId type", () => {
+ expect(
+ parseServerMessage(JSON.stringify({ type: "error", surfaceId: 42, message: "boom" })),
+ ).toBeNull();
+ });
+
+ it("parses a chat.delta message", () => {
+ const event = { type: "text-delta", conversationId: "c1", turnId: "t1", delta: "hello" };
+ const data = JSON.stringify({ type: "chat.delta", event });
+ const result = parseServerMessage(data);
+ expect(result).toEqual({ type: "chat.delta", event });
+ });
+
+ it("parses a chat.error message with conversationId", () => {
+ const data = JSON.stringify({
+ type: "chat.error",
+ conversationId: "c1",
+ message: "bad request",
+ });
+ const result = parseServerMessage(data);
+ expect(result).toEqual({ type: "chat.error", conversationId: "c1", message: "bad request" });
+ });
+
+ it("parses a chat.error message without conversationId", () => {
+ const data = JSON.stringify({ type: "chat.error", message: "no conversation" });
+ const result = parseServerMessage(data);
+ expect(result).toEqual({ type: "chat.error", message: "no conversation" });
+ });
+
+ it("returns null for chat.delta with non-object event", () => {
+ expect(parseServerMessage(JSON.stringify({ type: "chat.delta", event: "nope" }))).toBeNull();
+ });
+
+ it("returns null for chat.delta with missing event.type", () => {
+ expect(parseServerMessage(JSON.stringify({ type: "chat.delta", event: {} }))).toBeNull();
+ });
+
+ it("returns null for chat.error with non-string message", () => {
+ expect(parseServerMessage(JSON.stringify({ type: "chat.error", message: 42 }))).toBeNull();
+ });
+
+ it("returns null for chat.error with invalid conversationId type", () => {
+ expect(
+ parseServerMessage(
+ JSON.stringify({ type: "chat.error", conversationId: 42, message: "boom" }),
+ ),
+ ).toBeNull();
+ });
+
+ it("parses a conversation.open message", () => {
+ const data = JSON.stringify({
+ type: "conversation.open",
+ conversationId: "c1",
+ workspaceId: "w1",
+ });
+ const result = parseServerMessage(data);
+ expect(result).toEqual({
+ type: "conversation.open",
+ conversationId: "c1",
+ workspaceId: "w1",
+ });
+ });
+
+ it("returns null for conversation.open with missing conversationId", () => {
+ expect(
+ parseServerMessage(JSON.stringify({ type: "conversation.open", workspaceId: "w1" })),
+ ).toBeNull();
+ });
+
+ it("returns null for conversation.open with non-string conversationId", () => {
+ expect(
+ parseServerMessage(
+ JSON.stringify({
+ type: "conversation.open",
+ conversationId: 42,
+ workspaceId: "w1",
+ }),
+ ),
+ ).toBeNull();
+ });
+
+ it("returns null for conversation.open with missing workspaceId", () => {
+ expect(
+ parseServerMessage(JSON.stringify({ type: "conversation.open", conversationId: "c1" })),
+ ).toBeNull();
+ });
+
+ it("returns null for conversation.open with non-string workspaceId", () => {
+ expect(
+ parseServerMessage(
+ JSON.stringify({
+ type: "conversation.open",
+ conversationId: "c1",
+ workspaceId: 42,
+ }),
+ ),
+ ).toBeNull();
+ });
+
+ it("parses a conversation.statusChanged message", () => {
+ const data = JSON.stringify({
+ type: "conversation.statusChanged",
+ conversationId: "c1",
+ status: "active",
+ workspaceId: "w1",
+ });
+ expect(parseServerMessage(data)).toEqual({
+ type: "conversation.statusChanged",
+ conversationId: "c1",
+ status: "active",
+ workspaceId: "w1",
+ });
+ });
+
+ it("accepts the `queued` status (CR-13 — waiting for a concurrency slot)", () => {
+ const data = JSON.stringify({
+ type: "conversation.statusChanged",
+ conversationId: "c1",
+ status: "queued",
+ workspaceId: "w1",
+ });
+ expect(parseServerMessage(data)).toEqual({
+ type: "conversation.statusChanged",
+ conversationId: "c1",
+ status: "queued",
+ workspaceId: "w1",
+ });
+ });
+
+ it("returns null for conversation.statusChanged with missing workspaceId", () => {
+ expect(
+ parseServerMessage(
+ JSON.stringify({
+ type: "conversation.statusChanged",
+ conversationId: "c1",
+ status: "active",
+ }),
+ ),
+ ).toBeNull();
+ });
+
+ it("returns null for conversation.statusChanged with non-string workspaceId", () => {
+ expect(
+ parseServerMessage(
+ JSON.stringify({
+ type: "conversation.statusChanged",
+ conversationId: "c1",
+ status: "active",
+ workspaceId: 42,
+ }),
+ ),
+ ).toBeNull();
+ });
+ it("returns null for conversation.statusChanged with invalid status", () => {
+ expect(
+ parseServerMessage(
+ JSON.stringify({
+ type: "conversation.statusChanged",
+ conversationId: "c1",
+ status: "done",
+ workspaceId: "w1",
+ }),
+ ),
+ ).toBeNull();
+ });
+
+ it("returns null for conversation.statusChanged with missing conversationId", () => {
+ expect(
+ parseServerMessage(JSON.stringify({ type: "conversation.statusChanged", status: "idle" })),
+ ).toBeNull();
+ });
});
describe("round-trip: parseServerMessage(serialize(...))", () => {
- it("round-trips a subscribe message through serialize only", () => {
- const msg = { type: "subscribe" as const, surfaceId: "s1" };
- const wire = serialize(msg);
- expect(JSON.parse(wire)).toEqual(msg);
- });
-
- it("round-trips an invoke message with payload", () => {
- const msg = { type: "invoke" as const, surfaceId: "s1", actionId: "toggle", payload: false };
- const wire = serialize(msg);
- expect(JSON.parse(wire)).toEqual(msg);
- });
+ it("round-trips a subscribe message through serialize only", () => {
+ const msg = { type: "subscribe" as const, surfaceId: "s1" };
+ const wire = serialize(msg);
+ expect(JSON.parse(wire)).toEqual(msg);
+ });
+
+ it("round-trips an invoke message with payload", () => {
+ const msg = { type: "invoke" as const, surfaceId: "s1", actionId: "toggle", payload: false };
+ const wire = serialize(msg);
+ expect(JSON.parse(wire)).toEqual(msg);
+ });
});
describe("nextBackoffMs", () => {
- it("returns a positive number", () => {
- expect(nextBackoffMs(0)).toBeGreaterThan(0);
- });
-
- it("is capped at 30s + jitter (at most ~36s)", () => {
- for (let i = 0; i < 100; i++) {
- expect(nextBackoffMs(100)).toBeLessThanOrEqual(36_000);
- }
- });
-
- it("starts around 500ms (±20% jitter)", () => {
- for (let i = 0; i < 100; i++) {
- const ms = nextBackoffMs(0);
- expect(ms).toBeGreaterThanOrEqual(400);
- expect(ms).toBeLessThanOrEqual(600);
- }
- });
-
- it("grows exponentially with attempt", () => {
- const averages = [0, 1, 2, 3].map((attempt) => {
- let sum = 0;
- for (let i = 0; i < 200; i++) {
- sum += nextBackoffMs(attempt);
- }
- return sum / 200;
- });
- for (let i = 1; i < averages.length; i++) {
- const prev = averages[i - 1];
- if (prev === undefined) throw new Error("unreachable");
- expect(averages[i]).toBeGreaterThan(prev);
- }
- });
-
- it("treats negative attempt as 0", () => {
- for (let i = 0; i < 50; i++) {
- const ms = nextBackoffMs(-5);
- expect(ms).toBeGreaterThanOrEqual(400);
- expect(ms).toBeLessThanOrEqual(600);
- }
- });
+ it("returns a positive number", () => {
+ expect(nextBackoffMs(0)).toBeGreaterThan(0);
+ });
+
+ it("is capped at 30s + jitter (at most ~36s)", () => {
+ for (let i = 0; i < 100; i++) {
+ expect(nextBackoffMs(100)).toBeLessThanOrEqual(36_000);
+ }
+ });
+
+ it("starts around 500ms (±20% jitter)", () => {
+ for (let i = 0; i < 100; i++) {
+ const ms = nextBackoffMs(0);
+ expect(ms).toBeGreaterThanOrEqual(400);
+ expect(ms).toBeLessThanOrEqual(600);
+ }
+ });
+
+ it("grows exponentially with attempt", () => {
+ const averages = [0, 1, 2, 3].map((attempt) => {
+ let sum = 0;
+ for (let i = 0; i < 200; i++) {
+ sum += nextBackoffMs(attempt);
+ }
+ return sum / 200;
+ });
+ for (let i = 1; i < averages.length; i++) {
+ const prev = averages[i - 1];
+ if (prev === undefined) throw new Error("unreachable");
+ expect(averages[i]).toBeGreaterThan(prev);
+ }
+ });
+
+ it("treats negative attempt as 0", () => {
+ for (let i = 0; i < 50; i++) {
+ const ms = nextBackoffMs(-5);
+ expect(ms).toBeGreaterThanOrEqual(400);
+ expect(ms).toBeLessThanOrEqual(600);
+ }
+ });
});
diff --git a/src/adapters/ws/logic.ts b/src/adapters/ws/logic.ts
index 6592f1b..03ef763 100644
--- a/src/adapters/ws/logic.ts
+++ b/src/adapters/ws/logic.ts
@@ -1,32 +1,38 @@
import type {
- ChatDeltaMessage,
- ChatErrorMessage,
- WsClientMessage,
- WsServerMessage,
+ ChatDeltaMessage,
+ ChatErrorMessage,
+ ConversationCompactedMessage,
+ ConversationOpenMessage,
+ ConversationStatusChangedMessage,
+ WsClientMessage,
+ WsServerMessage,
} from "@dispatch/transport-contract";
import type {
- CatalogMessage,
- SurfaceErrorMessage,
- SurfaceMessage,
- SurfaceUpdateMessage,
+ CatalogMessage,
+ SurfaceErrorMessage,
+ SurfaceMessage,
+ SurfaceUpdateMessage,
} from "@dispatch/ui-contract";
const VALID_SERVER_TYPES = new Set([
- "catalog",
- "surface",
- "update",
- "error",
- "chat.delta",
- "chat.error",
+ "catalog",
+ "surface",
+ "update",
+ "error",
+ "chat.delta",
+ "chat.error",
+ "conversation.open",
+ "conversation.statusChanged",
+ "conversation.compacted",
]);
/** Serialize a client message to a JSON string for the wire. */
export function serialize(msg: WsClientMessage): string {
- return JSON.stringify(msg);
+ return JSON.stringify(msg);
}
function isRecord(v: unknown): v is Record<string, unknown> {
- return v !== null && typeof v === "object" && !Array.isArray(v);
+ return v !== null && typeof v === "object" && !Array.isArray(v);
}
/**
@@ -34,74 +40,126 @@ function isRecord(v: unknown): v is Record<string, unknown> {
* Returns null for malformed JSON or shapes that don't match the protocol.
*/
export function parseServerMessage(data: string): WsServerMessage | null {
- let parsed: unknown;
- try {
- parsed = JSON.parse(data);
- } catch {
- return null;
- }
- if (!isRecord(parsed)) {
- return null;
- }
- const t = parsed.type;
- if (typeof t !== "string" || !VALID_SERVER_TYPES.has(t)) {
- return null;
- }
- switch (t) {
- case "catalog": {
- if (!Array.isArray(parsed.catalog)) return null;
- return { type: "catalog", catalog: parsed.catalog as CatalogMessage["catalog"] };
- }
- case "surface": {
- const spec = parsed.spec;
- if (!isRecord(spec)) return null;
- if (typeof spec.id !== "string") return null;
- if (typeof spec.region !== "string") return null;
- if (typeof spec.title !== "string") return null;
- if (!Array.isArray(spec.fields)) return null;
- return { type: "surface", spec: spec as unknown as SurfaceMessage["spec"] };
- }
- case "update": {
- const update = parsed.update;
- if (!isRecord(update)) return null;
- if (typeof update.surfaceId !== "string") return null;
- const spec = update.spec;
- if (!isRecord(spec)) return null;
- if (typeof spec.id !== "string") return null;
- if (typeof spec.region !== "string") return null;
- if (typeof spec.title !== "string") return null;
- if (!Array.isArray(spec.fields)) return null;
- return { type: "update", update: update as unknown as SurfaceUpdateMessage["update"] };
- }
- case "error": {
- if (typeof parsed.message !== "string") return null;
- const surfaceId = parsed.surfaceId;
- if (surfaceId !== undefined && typeof surfaceId !== "string") return null;
- const msg: SurfaceErrorMessage =
- surfaceId !== undefined
- ? { type: "error", surfaceId, message: parsed.message }
- : { type: "error", message: parsed.message };
- return msg;
- }
- case "chat.delta": {
- const event = parsed.event;
- if (!isRecord(event)) return null;
- if (typeof event.type !== "string") return null;
- return { type: "chat.delta", event: event as unknown as ChatDeltaMessage["event"] };
- }
- case "chat.error": {
- if (typeof parsed.message !== "string") return null;
- const conversationId = parsed.conversationId;
- if (conversationId !== undefined && typeof conversationId !== "string") return null;
- const msg: ChatErrorMessage =
- conversationId !== undefined
- ? { type: "chat.error", conversationId, message: parsed.message }
- : { type: "chat.error", message: parsed.message };
- return msg;
- }
- default:
- return null;
- }
+ let parsed: unknown;
+ try {
+ parsed = JSON.parse(data);
+ } catch {
+ return null;
+ }
+ if (!isRecord(parsed)) {
+ return null;
+ }
+ const t = parsed.type;
+ if (typeof t !== "string" || !VALID_SERVER_TYPES.has(t)) {
+ return null;
+ }
+ switch (t) {
+ case "catalog": {
+ if (!Array.isArray(parsed.catalog)) return null;
+ return { type: "catalog", catalog: parsed.catalog as CatalogMessage["catalog"] };
+ }
+ case "surface": {
+ const spec = parsed.spec;
+ if (!isRecord(spec)) return null;
+ if (typeof spec.id !== "string") return null;
+ if (typeof spec.region !== "string") return null;
+ if (typeof spec.title !== "string") return null;
+ if (!Array.isArray(spec.fields)) return null;
+ // Preserve the conversationId echo (a conversation-scoped surface's initial
+ // reply carries it) — dropping it would defeat the protocol reducer's
+ // stale-scope filtering on a fast conversation switch.
+ const conversationId = parsed.conversationId;
+ if (conversationId !== undefined && typeof conversationId !== "string") return null;
+ const surfaceSpec = spec as unknown as SurfaceMessage["spec"];
+ return conversationId !== undefined
+ ? { type: "surface", spec: surfaceSpec, conversationId }
+ : { type: "surface", spec: surfaceSpec };
+ }
+ case "update": {
+ const update = parsed.update;
+ if (!isRecord(update)) return null;
+ if (typeof update.surfaceId !== "string") return null;
+ const spec = update.spec;
+ if (!isRecord(spec)) return null;
+ if (typeof spec.id !== "string") return null;
+ if (typeof spec.region !== "string") return null;
+ if (typeof spec.title !== "string") return null;
+ if (!Array.isArray(spec.fields)) return null;
+ return { type: "update", update: update as unknown as SurfaceUpdateMessage["update"] };
+ }
+ case "error": {
+ if (typeof parsed.message !== "string") return null;
+ const surfaceId = parsed.surfaceId;
+ if (surfaceId !== undefined && typeof surfaceId !== "string") return null;
+ const msg: SurfaceErrorMessage =
+ surfaceId !== undefined
+ ? { type: "error", surfaceId, message: parsed.message }
+ : { type: "error", message: parsed.message };
+ return msg;
+ }
+ case "chat.delta": {
+ const event = parsed.event;
+ if (!isRecord(event)) return null;
+ if (typeof event.type !== "string") return null;
+ return { type: "chat.delta", event: event as unknown as ChatDeltaMessage["event"] };
+ }
+ case "chat.error": {
+ if (typeof parsed.message !== "string") return null;
+ const conversationId = parsed.conversationId;
+ if (conversationId !== undefined && typeof conversationId !== "string") return null;
+ const msg: ChatErrorMessage =
+ conversationId !== undefined
+ ? { type: "chat.error", conversationId, message: parsed.message }
+ : { type: "chat.error", message: parsed.message };
+ return msg;
+ }
+ case "conversation.open": {
+ if (typeof parsed.conversationId !== "string") return null;
+ if (typeof parsed.workspaceId !== "string") return null;
+ const msg: ConversationOpenMessage = {
+ type: "conversation.open",
+ conversationId: parsed.conversationId,
+ workspaceId: parsed.workspaceId,
+ };
+ return msg;
+ }
+ case "conversation.statusChanged": {
+ if (typeof parsed.conversationId !== "string") return null;
+ if (typeof parsed.status !== "string") return null;
+ if (
+ parsed.status !== "active" &&
+ parsed.status !== "queued" &&
+ parsed.status !== "idle" &&
+ parsed.status !== "closed"
+ ) {
+ return null;
+ }
+ if (typeof parsed.workspaceId !== "string") return null;
+ const msg: ConversationStatusChangedMessage = {
+ type: "conversation.statusChanged",
+ conversationId: parsed.conversationId,
+ status: parsed.status,
+ workspaceId: parsed.workspaceId,
+ };
+ return msg;
+ }
+ case "conversation.compacted": {
+ if (typeof parsed.conversationId !== "string") return null;
+ if (typeof parsed.newConversationId !== "string") return null;
+ if (typeof parsed.messagesSummarized !== "number") return null;
+ if (typeof parsed.messagesKept !== "number") return null;
+ const msg: ConversationCompactedMessage = {
+ type: "conversation.compacted",
+ conversationId: parsed.conversationId,
+ newConversationId: parsed.newConversationId,
+ messagesSummarized: parsed.messagesSummarized,
+ messagesKept: parsed.messagesKept,
+ };
+ return msg;
+ }
+ default:
+ return null;
+ }
}
/**
@@ -109,10 +167,10 @@ export function parseServerMessage(data: string): WsServerMessage | null {
* Base: 500ms, doubles each attempt, caps at 30s, adds ±20% jitter.
*/
export function nextBackoffMs(attempt: number): number {
- const base = 500;
- const max = 30_000;
- const exponential = base * 2 ** Math.max(0, attempt);
- const capped = Math.min(exponential, max);
- const jitter = 0.8 + Math.random() * 0.4;
- return Math.round(capped * jitter);
+ const base = 500;
+ const max = 30_000;
+ const exponential = base * 2 ** Math.max(0, attempt);
+ const capped = Math.min(exponential, max);
+ const jitter = 0.8 + Math.random() * 0.4;
+ return Math.round(capped * jitter);
}
diff --git a/src/app.css b/src/app.css
index 37131d3..f5b269c 100644
--- a/src/app.css
+++ b/src/app.css
@@ -1,8 +1,129 @@
@import "tailwindcss";
+/* Syntax-highlight theme for fenced code blocks in rendered Markdown. */
+@import "highlight.js/styles/atom-one-dark.min.css";
-/* DaisyUI v5 — enable the plugin AND bundle the dracula theme (set as default,
- applied via <html data-theme="dracula">). Themes not listed here are NOT
- bundled, so dracula must be named explicitly, not merely referenced. */
+/* Custom monokai theme — must be imported BEFORE the @plugin block. */
+@import "./themes/monokai.css";
+
+/* DaisyUI v5 — enable the plugin AND bundle the monokai theme (set as default,
+ applied via <html data-theme="monokai">). Themes not listed here are NOT
+ bundled, so monokai must be named explicitly, not merely referenced. */
@plugin "daisyui" {
- themes: dracula --default;
+ themes: monokai --default;
+}
+
+/* Rendered-Markdown (assistant messages) typography — scoped to .markdown-body
+ so it never leaks into the rest of the app. */
+.markdown-body {
+ & p {
+ margin-block: 0.5em;
+ &:first-child {
+ margin-block-start: 0;
+ }
+ &:last-child {
+ margin-block-end: 0;
+ }
+ }
+ & h1,
+ & h2,
+ & h3,
+ & h4,
+ & h5,
+ & h6 {
+ font-weight: 600;
+ line-height: 1.25;
+ margin-block: 0.75em 0.25em;
+ &:first-child {
+ margin-block-start: 0;
+ }
+ }
+ & h1 {
+ font-size: 1.4em;
+ }
+ & h2 {
+ font-size: 1.2em;
+ }
+ & h3 {
+ font-size: 1.1em;
+ }
+ & ul,
+ & ol {
+ padding-inline-start: 1.5em;
+ margin-block: 0.5em;
+ }
+ & ul {
+ list-style-type: disc;
+ }
+ & ol {
+ list-style-type: decimal;
+ }
+ & li {
+ margin-block: 0.15em;
+ }
+ & pre {
+ overflow-x: auto;
+ border-radius: var(--radius-box);
+ margin-block: 0.5em;
+ }
+ & pre code {
+ display: block;
+ padding: 0.75em 1em;
+ font-size: 0.8125em;
+ line-height: 1.5;
+ }
+ & :not(pre) > code {
+ font-size: 0.875em;
+ padding: 0.15em 0.4em;
+ border-radius: var(--radius-selector);
+ background-color: oklch(var(--color-base-content) / 0.1);
+ }
+ & blockquote {
+ border-inline-start: 3px solid oklch(var(--color-base-content) / 0.2);
+ padding-inline-start: 0.75em;
+ margin-block: 0.5em;
+ opacity: 0.8;
+ }
+ & a {
+ color: oklch(var(--color-primary));
+ text-decoration: underline;
+ &:hover {
+ opacity: 0.8;
+ }
+ }
+ & strong {
+ font-weight: 600;
+ }
+ & table {
+ width: 100%;
+ border-collapse: collapse;
+ margin-block: 0.5em;
+ font-size: 0.875em;
+ }
+ & th,
+ & td {
+ border: 1px solid oklch(var(--color-base-content) / 0.15);
+ padding: 0.4em 0.75em;
+ text-align: start;
+ }
+ & th {
+ font-weight: 600;
+ background-color: oklch(var(--color-base-200));
+ }
+ & hr {
+ border: none;
+ border-top: 1px solid oklch(var(--color-base-content) / 0.2);
+ margin-block: 0.75em;
+ }
+}
+
+/* App shell fills the viewport and never scrolls/overflows at the page level —
+ the inner regions (tab strip, chat transcript) own their own scrolling. */
+html,
+body,
+#app {
+ height: 100%;
+}
+
+body {
+ overflow: hidden;
}
diff --git a/src/app/App.svelte b/src/app/App.svelte
index cc9866e..7e5ac7d 100644
--- a/src/app/App.svelte
+++ b/src/app/App.svelte
@@ -1,94 +1,847 @@
<script lang="ts">
+ import type { ImageInput, ReasoningEffort } from "@dispatch/transport-contract";
import type { InvokeMessage } from "@dispatch/ui-contract";
- import { ChatView, Composer, ModelSelector } from "../features/chat";
- import { TabBar } from "../features/tabs";
- import { SurfaceView } from "../features/surface-host";
+ import { tick } from "svelte";
+ import Table from "../components/Table.svelte";
+ import {
+ CacheWarmingView,
+ manifest as cacheWarmingManifest,
+ type WarmFeedback,
+ } from "../features/cache-warming";
+ import {
+ ChatView,
+ CompactionView,
+ Composer,
+ manifest as chatManifest,
+ ModelSelector,
+ ReasoningEffortSelector,
+ type CompactNowResult,
+ type ComposerStatus,
+ type ReasoningEffortSaveResult,
+ type SaveCompactPercentResult,
+ } from "../features/chat";
+ import { manifest as conversationCacheManifest } from "../features/conversation-cache";
+ import { manifest as markdownManifest } from "../features/markdown";
+ import {
+ McpStatusView,
+ manifest as mcpManifest,
+ type McpStatusResult,
+ } from "../features/mcp";
+ import {
+ ChatLimitField,
+ manifest as settingsManifest,
+ type ChatLimitSaveResult,
+ } from "../features/settings";
+ import {
+ createSmartScrollController,
+ manifest as smartScrollManifest,
+ ScrollToBottom,
+ } from "../features/smart-scroll";
+ import { manifest as surfaceHostManifest, SurfaceView } from "../features/surface-host";
+ import { parseMessageQueuePayload } from "../features/surface-host/logic/message-queue";
+ import { parseTodoPayload } from "../features/surface-host/logic/todo";
+ import TodoList from "../features/surface-host/ui/TodoList.svelte";
+ import { manifest as tabsManifest, TabList } from "../features/tabs";
+ import { manifest as viewsManifest, ViewSidebar } from "../features/views";
+ import {
+ CwdField,
+ type CwdSaveResult,
+ LspStatusView,
+ type LspStatusResult,
+ manifest as cwdLspManifest,
+ } from "../features/cwd-lsp";
+ import {
+ ComputerField,
+ manifest as computerManifest,
+ type ComputerSaveResult,
+ type ComputerStatusResult,
+ type LoadComputerStatus,
+ type SaveComputer,
+ type TestComputer,
+ type TestComputerResult,
+ } from "../features/computer";
+ import {
+ HeartbeatView,
+ manifest as heartbeatManifest,
+ RunModal,
+ type HeartbeatConfigResult,
+ type HeartbeatNextRunResult,
+ type HeartbeatRunView,
+ type HeartbeatRunsResult,
+ type HeartbeatStopResult,
+ } from "../features/heartbeat";
+ import {
+ ConcurrencyView,
+ manifest as concurrencyManifest,
+ type DeleteConcurrencyLimit,
+ type LoadConcurrencyLimits,
+ type LoadConcurrencyStatus,
+ type SaveConcurrencyCooldown,
+ type SaveConcurrencyLimit,
+ } from "../features/concurrency";
+ import type { ChatStore } from "../features/chat";
+ import {
+ SystemPromptBuilder,
+ type LoadSystemPrompt as LoadSystemPromptAlias,
+ type LoadSystemPromptVariables as LoadSystemPromptVariablesAlias,
+ type SaveSystemPrompt as SaveSystemPromptAlias,
+ manifest as systemPromptManifest,
+ } from "../features/system-prompt";
+ import {
+ VisionSettingsView,
+ manifest as visionManifest,
+ type LoadVisionSettingsResult,
+ type SaveVisionSettingsResult,
+ type VisionSettingsPatch,
+ } from "../features/vision";
import type { AppStore } from "./store.svelte";
+ import ErrorModal from "./ErrorModal.svelte";
+ import { createLocalStore } from "../adapters/local-storage";
+ import { untrack } from "svelte";
- let { store }: { store: AppStore } = $props();
+ let { store, onNavigate }: { store: AppStore; onNavigate: (path: string) => void } = $props();
- function handleSelect(surfaceId: string) {
- store.select(surfaceId);
+ // The backend's conversation-scoped cache-warming surface. Referenced by id at
+ // the composition root (sanctioned discovery-by-id) to give it a dedicated view
+ // and keep it out of the generic Extensions surface list — SurfaceView itself
+ // stays fully generic (it never switches on a surface id).
+ const CACHE_WARMING_ID = "cache-warming";
+ // The message-queue extension's per-conversation surface (steering). Pulled
+ // out of the generic Extensions list and rendered as a compact panel above the
+ // composer — pending steering messages are tied to the chat, not the sidebar.
+ const MESSAGE_QUEUE_ID = "message-queue";
+ // The `todo` extension's per-conversation task list surface (model-maintained).
+ const TODO_ID = "todo";
+
+ // The view kinds offered in the sidebar's dropdown. Generic data — the
+ // `viewContent` snippet below maps each kind id to its renderer.
+ const viewKinds = [
+ { id: "tabs", label: "Tabs" },
+ { id: "model", label: "Model" },
+ { id: "lsp", label: "Language Servers" },
+ { id: "mcp", label: "MCP Servers" },
+ { id: "extensions", label: "Extensions" },
+ { id: "cache-warming", label: "Cache Warming" },
+ { id: "tasks", label: "Tasks" },
+ { id: "compaction", label: "Compaction" },
+ { id: "heartbeat", label: "Heartbeat" },
+ { id: "concurrency", label: "Concurrency" },
+ { id: "system-prompt", label: "System Prompt" },
+ { id: "settings", label: "Settings" },
+ ] as const;
+
+ // Default sidebar layout: the Tabs list (the moved-from-top tab bar) plus the
+ // Model view, so a fresh user sees their conversations + model controls.
+ const DEFAULT_VIEWS: readonly string[] = ["tabs", "model"];
+ const sidebarStore = createLocalStore<readonly string[]>("dispatch.sidebar.views", {
+ storage: untrack(() => store.storage),
+ });
+ const sidebarPanels = sidebarStore.load() ?? DEFAULT_VIEWS;
+
+ function handleSidebarChange(kinds: readonly (string | null)[]): void {
+ sidebarStore.save(kinds.filter((k): k is string => k !== null));
+ }
+
+ // Frontend module list for the "Loaded Modules" view, AGGREGATED from each
+ // feature's public `manifest` export so it can't drift from what's actually
+ // composed. (The backend's "Loaded Extensions" surface is a SEPARATE,
+ // backend-owned list.) FE features are internal units of this single repo, so
+ // there is no per-module version — they all share dispatch-web's version.
+ const MODULE_COLUMNS = ["Module", "Description"] as const;
+ const loadedModules: readonly (readonly [string, string])[] = [
+ chatManifest,
+ tabsManifest,
+ surfaceHostManifest,
+ viewsManifest,
+ conversationCacheManifest,
+ markdownManifest,
+ cacheWarmingManifest,
+ cwdLspManifest,
+ mcpManifest,
+ computerManifest,
+ smartScrollManifest,
+ settingsManifest,
+ systemPromptManifest,
+ heartbeatManifest,
+ concurrencyManifest,
+ visionManifest,
+ ].map((m) => [m.name, m.description] as const);
+
+ // Smart-scroll: keep the transcript pinned to the bottom while it streams,
+ // unless the reader has scrolled up (then show a "scroll to bottom" button).
+ // One controller owns the chat scroll region; effects below feed it the edges.
+ const smartScroll = createSmartScrollController();
+ let transcriptEl = $state<HTMLElement | undefined>();
+ let transcriptContentEl = $state<HTMLElement | undefined>();
+
+ // Chat-limit unload gate: old chunks may be unloaded only while the reader is
+ // stuck to the bottom. While stuck, a trim removes content far ABOVE the
+ // viewport and the controller re-pins to the bottom — no visible jump; while
+ // reading history, trimming is deferred instead of yanking the page (the old
+ // Dispatch bug). In an $effect so a swapped store prop would be re-wired.
+ $effect(() => {
+ store.attachUnloadGate(() => smartScroll.isAtBottom());
+ });
+
+ // "Show earlier messages": page older history back in, preserving the reader's
+ // viewport position — prepended content grows scrollHeight, so shift scrollTop
+ // by the growth (the manual analogue of CSS scroll anchoring, which not every
+ // engine applies here).
+ async function handleShowEarlier(): Promise<void> {
+ const el = transcriptEl;
+ const prevHeight = el?.scrollHeight ?? 0;
+ const prevTop = el?.scrollTop ?? 0;
+ await store.activeChat.showEarlier();
+ await tick();
+ if (el) {
+ const delta = el.scrollHeight - prevHeight;
+ if (delta > 0) el.scrollTop = prevTop + delta;
+ }
}
+ // Attach/detach the controller to the live scroll element + content (disposed on
+ // unmount). The content element is observed (ResizeObserver) so the view follows
+ // height changes that aren't a transcript append.
+ $effect(() => {
+ if (!transcriptEl) return;
+ return smartScroll.attach(transcriptEl, transcriptContentEl);
+ });
+
+ // New transcript content streamed in (or messages loaded) → follow the bottom
+ // while stuck. Reads `chunks.length` so the effect re-runs on every append.
+ $effect(() => {
+ void store.activeChat.chunks.length;
+ smartScroll.contentChanged();
+ });
+
+ // The message-queue surface spec + whether it currently has pending messages
+ // (steering). Rendered as a compact panel above the composer only when non-empty.
+ const messageQueueSpec = $derived(store.surface(MESSAGE_QUEUE_ID));
+ const hasQueuedMessages = $derived.by(() => {
+ const spec = messageQueueSpec;
+ if (spec === null) return false;
+ const field = spec.fields.find((f) => f.kind === "custom" && f.rendererId === MESSAGE_QUEUE_ID);
+ if (field === undefined || field.kind !== "custom") return false;
+ const data = parseMessageQueuePayload(field.payload);
+ return data !== null && data.messages.length > 0;
+ });
+
+ // The todo surface spec + its parsed task list (model-maintained, read-only).
+ const todoSpec = $derived(store.surface(TODO_ID));
+ const todoData = $derived.by(() => {
+ const spec = todoSpec;
+ if (spec === null) return null;
+ const field = spec.fields.find((f) => f.kind === "custom" && f.rendererId === TODO_ID);
+ if (field === undefined || field.kind !== "custom") return null;
+ return parseTodoPayload(field.payload);
+ });
+
+ // Top-bar title: the active tab's title, or "New Tab" when no tab is active
+ // (a fresh, unstarted draft — the conversation hasn't been sent yet, so no
+ // tab exists). Pure-derived from the (workspace-filtered) tab set + the
+ // active id; reflects whichever tab is selected in the sidebar's Tabs view.
+ const NEW_TAB_TITLE = "New Tab";
+ const topBarTitle = $derived.by(() => {
+ const id = store.activeConversationId;
+ if (id === null) return NEW_TAB_TITLE;
+ const tab = store.tabs.find((t) => t.conversationId === id);
+ return tab?.title ?? NEW_TAB_TITLE;
+ });
+
+ // The composer status-bar status. Priority: error > queued > running > idle.
+ // `queued` (the turn is in flight but waiting for a concurrency slot — CR-13)
+ // wins over `running` so the corner shows a ring, not dots, during the wait.
+ // `turn-start` fires before the slot is granted, so `generating` is already
+ // true while `conversationStatus === "queued"`; the explicit queued check is
+ // what distinguishes the two.
+ const composerStatus = $derived.by<ComposerStatus>(() => {
+ if (store.activeChat.error) return "error";
+ const id = store.activeConversationId;
+ if (id !== null && store.conversationStatus(id) === "queued") return "queued";
+ return store.activeChat.generating ? "running" : "idle";
+ });
+
+ // Conversation/tab switch → snap to the bottom of the new transcript.
+ $effect(() => {
+ void store.activeConversationId;
+ smartScroll.reset();
+ });
+
+ // Right sidebar: persisted open/closed state. Defaults to open on wide
+ // screens (first visit), then remembers the user's toggle thereafter.
+ const WIDE_BREAKPOINT = 1024; // Tailwind `lg`
+ const sidebarOpenStore = createLocalStore<boolean>("dispatch.sidebar.open", {
+ storage: untrack(() => store.storage),
+ });
+ const storedSidebarOpen = sidebarOpenStore.load();
+ let sidebarOpen = $state(storedSidebarOpen ?? (typeof window !== "undefined" ? window.innerWidth >= WIDE_BREAKPOINT : true));
+ let systemPromptModalOpen = $state(false);
+ // The heartbeat run currently open in the fullscreen run-chat modal (null =
+ // closed). Holds a snapshot run view; the modal re-mounts per run (keyed).
+ let heartbeatRun = $state<HeartbeatRunView | null>(null);
+
+ $effect(() => {
+ sidebarOpenStore.save(sidebarOpen);
+ });
+
function handleInvoke(msg: InvokeMessage) {
store.invoke(msg.surfaceId, msg.actionId, msg.payload);
}
- function handleSend(text: string) {
- store.send(text);
+ function handleSend(text: string, images?: readonly ImageInput[]): void {
+ store.send(text, images);
+ }
+
+ function handleQueue(text: string) {
+ store.queueMessage(text);
+ }
+
+ function handleStop() {
+ store.stopGeneration();
}
function handleSelectModel(model: string) {
store.selectModel(model);
}
-</script>
-<main class="flex h-screen flex-col">
- <div class="flex items-center justify-between border-b border-base-300 px-4 py-2">
- <h1 class="text-lg font-bold">Dispatch</h1>
- </div>
+ // Adapt the store's WarmResult to the cache-warming feature's WarmNow port.
+ async function warmNow(): Promise<WarmFeedback | null> {
+ const result = await store.warmNow();
+ if (result === null) return null;
+ return result.ok
+ ? {
+ ok: true,
+ cachePct: result.response.cachePct,
+ expectedCacheRate: result.response.expectedCacheRate,
+ }
+ : { ok: false, error: result.error };
+ }
- {#if store.lastError}
- <div role="alert" class="alert alert-error mx-4 mt-2">
- <strong>Error:</strong>
- {store.lastError.message}
- </div>
- {/if}
+ // Adapt the store's reasoning-effort result to the chat feature's port.
+ async function saveReasoningEffort(
+ level: ReasoningEffort,
+ ): Promise<ReasoningEffortSaveResult | null> {
+ const result = await store.setReasoningEffort(level);
+ if (result === null) return null;
+ return result.ok
+ ? { ok: true, reasoningEffort: result.reasoningEffort }
+ : { ok: false, error: result.error };
+ }
- {#if store.activeChat.error}
- <div role="alert" class="alert alert-warning mx-4 mt-2">
- <strong>Chat error:</strong>
- {store.activeChat.error}
- </div>
- {/if}
+ // Adapt the store's compact result to the compaction view's port.
+ async function compactNow(): Promise<CompactNowResult | null> {
+ const result = await store.compactNow();
+ if (result === null) return null;
+ return result.ok
+ ? {
+ ok: true,
+ messagesSummarized: result.response.messagesSummarized,
+ messagesKept: result.response.messagesKept,
+ }
+ : { ok: false, error: result.error };
+ }
- <TabBar
- tabs={store.tabs}
- activeConversationId={store.activeConversationId}
- onSelect={(id) => store.selectTab(id)}
- onClose={(id) => store.closeTab(id)}
- onNewDraft={() => store.newDraft()}
- />
+ async function saveCompactPercent(
+ percent: number,
+ ): Promise<SaveCompactPercentResult | null> {
+ const result = await store.setCompactPercent(percent);
+ if (result === null) return null;
+ return result.ok
+ ? { ok: true, percent: result.percent }
+ : { ok: false, error: result.error };
+ }
- <div class="flex flex-1 flex-col overflow-hidden">
- <div class="flex items-center gap-2 px-4 py-2">
- <ModelSelector
- models={store.models}
- selected={store.activeModel}
- onSelect={handleSelectModel}
- />
+ // Adapt the store's global vision-settings API to the vision feature's ports.
+ async function loadVisionSettings(): Promise<LoadVisionSettingsResult> {
+ // The store seeds `visionSettings` on boot; a refresh keeps it current.
+ await store.refreshVisionSettings();
+ const settings = store.visionSettings;
+ if (settings === null) {
+ return { ok: false, error: "Vision settings not available." };
+ }
+ return { ok: true, settings };
+ }
+
+ async function saveVisionSettings(
+ patch: VisionSettingsPatch,
+ ): Promise<SaveVisionSettingsResult> {
+ const result = await store.setVisionSettings(patch);
+ if (result === null) return { ok: false, error: "Vision settings not available." };
+ return result.ok
+ ? { ok: true, settings: result.settings }
+ : { ok: false, error: result.error };
+ }
+
+ // Adapt the store's chat-limit result to the settings feature's port. On a
+ // raise the active chat refills (prepends older history); preserve the
+ // reader's viewport over the prepend (the manual analogue of CSS scroll
+ // anchoring), exactly like `handleShowEarlier`.
+ async function saveChatLimit(value: number): Promise<ChatLimitSaveResult> {
+ const el = transcriptEl;
+ const prevHeight = el?.scrollHeight ?? 0;
+ const prevTop = el?.scrollTop ?? 0;
+ const result = await store.setChatLimit(value);
+ await tick();
+ if (el) {
+ const delta = el.scrollHeight - prevHeight;
+ if (delta > 0) el.scrollTop = prevTop + delta;
+ }
+ return result.ok
+ ? { ok: true, chatLimit: result.chatLimit }
+ : { ok: false, error: result.error };
+ }
+
+ // Adapt the store's cwd/LSP results to the cwd-lsp feature's ports.
+ async function saveCwd(cwd: string): Promise<CwdSaveResult | null> {
+ const result = await store.setCwd(cwd);
+ if (result === null) return null;
+ return result.ok ? { ok: true, cwd: result.cwd } : { ok: false, error: result.error };
+ }
+
+ async function loadLspStatus(): Promise<LspStatusResult | null> {
+ const result = await store.lspStatus();
+ if (result === null) return null;
+ return result.ok
+ ? { ok: true, cwd: result.response.cwd, servers: result.response.servers }
+ : { ok: false, error: result.error };
+ }
+
+ // Adapt the store's computer results to the computer feature's ports.
+ async function saveComputer(computerId: string | null): Promise<ComputerSaveResult | null> {
+ const result = await store.setComputer(computerId);
+ if (result === null) return null;
+ return result.ok ? { ok: true, computerId: result.computerId } : { ok: false, error: result.error };
+ }
+
+ const loadComputerStatus: LoadComputerStatus = async (
+ alias: string,
+ ): Promise<ComputerStatusResult | null> => {
+ const result = await store.computerStatus(alias);
+ if (result === null) return null;
+ return result.ok ? { ok: true, status: result.response } : { ok: false, error: result.error };
+ };
+
+ const testComputer: TestComputer = async (
+ alias: string,
+ ): Promise<TestComputerResult | null> => {
+ const result = await store.testComputer(alias);
+ if (result === null) return null;
+ return result.ok ? { ok: true, response: result.response } : { ok: false, error: result.error };
+ };
+
+ async function loadMcpStatus(): Promise<McpStatusResult | null> {
+ const result = await store.mcpStatus();
+ if (result === null) return null;
+ return result.ok
+ ? { ok: true, cwd: result.response.cwd, servers: result.response.servers }
+ : { ok: false, error: result.error };
+ }
+
+ // Adapt the store's system prompt results to the system-prompt feature's ports.
+ const loadSystemPromptPrompt: LoadSystemPromptAlias = () => store.loadSystemPrompt();
+
+ const loadSystemPromptVariablesPrompt: LoadSystemPromptVariablesAlias = () =>
+ store.loadSystemPromptVariables();
+
+ const saveSystemPromptPrompt: SaveSystemPromptAlias = (template) => store.setSystemPrompt(template);
+
+ // Adapt the store's heartbeat results to the heartbeat feature's ports. The
+ // store returns the feature's result types directly (the API is a plain REST
+ // surface, not a transport-contract type), so the adapter is a thin passthrough
+ // (kept for structural consistency with cwd-lsp/mcp/computer — see AGENTS.md
+ // "contracts are the cross-unit surface").
+ async function loadHeartbeatConfig(): Promise<HeartbeatConfigResult> {
+ return store.heartbeatConfig();
+ }
+
+ async function saveHeartbeatConfig(
+ patch: Parameters<typeof store.setHeartbeatConfig>[0],
+ ): Promise<HeartbeatConfigResult> {
+ return store.setHeartbeatConfig(patch);
+ }
+
+ async function loadHeartbeatRuns(): Promise<HeartbeatRunsResult> {
+ return store.heartbeatRuns();
+ }
+
+ async function stopHeartbeatRun(runId: string): Promise<HeartbeatStopResult> {
+ return store.stopHeartbeatRun(runId);
+ }
+
+ async function loadHeartbeatNextRun(): Promise<HeartbeatNextRunResult> {
+ return store.heartbeatNextRun();
+ }
+
+ // Run-chat modal: open a live watch on the run's conversation (the store owns
+ // the ChatStore + the `chat.subscribe` stream), and tear it down on close.
+ function openRunChat(conversationId: string): ChatStore {
+ return store.watchConversation(conversationId);
+ }
+ function closeRunChat(conversationId: string): void {
+ store.unwatchConversation(conversationId);
+ }
+
+ // Adapt the store's concurrency results to the feature's ports. The store
+ // returns the feature's result types directly (the API is a plain REST surface
+ // under /concurrency, not a workspace/conversation-scoped one), so the adapter
+ // is a thin passthrough (kept for structural consistency — AGENTS.md "contracts
+ // are the cross-unit surface").
+ const loadConcurrencyLimits: LoadConcurrencyLimits = () => store.concurrencyLimits();
+ const saveConcurrencyLimit: SaveConcurrencyLimit = (providerId, limit) =>
+ store.setConcurrencyLimit(providerId, limit);
+ const deleteConcurrencyLimit: DeleteConcurrencyLimit = (providerId) =>
+ store.deleteConcurrencyLimit(providerId);
+ const loadConcurrencyStatus: LoadConcurrencyStatus = () => store.concurrencyStatus();
+ const saveConcurrencyCooldown: SaveConcurrencyCooldown = (providerId, cooldownMs) =>
+ store.setConcurrencyCooldown(providerId, cooldownMs);
+</script>
+
+<main class="relative flex h-screen overflow-hidden">
+ <!-- LEFT: everything except the sidebar. The full-height sidebar is a sibling
+ (below), so opening it shrinks this ENTIRE column. -->
+ <div class="flex min-w-0 flex-1 flex-col overflow-hidden pt-[5px]">
+ <!-- Slim header: the tab bar moved into the sidebar (the "Tabs" view), so
+ the top row now shows the active tab's title on the left (or "New Tab"
+ for an unstarted draft), with the build version + sidebar toggle on
+ the right. -->
+ <div class="flex items-center justify-between gap-2 px-2 py-2">
+ <span
+ class="min-w-0 flex-1 shrink truncate pl-2 text-sm font-medium opacity-70"
+ data-testid="top-bar-title"
+ title={topBarTitle}
+ aria-label="Active conversation title"
+ >
+ {topBarTitle}
+ </span>
+ <a
+ href="/"
+ class="btn btn-ghost btn-sm shrink-0 px-2"
+ aria-label="Back to dashboard"
+ title="Back to dashboard"
+ onclick={(e) => {
+ e.preventDefault();
+ onNavigate("/");
+ }}
+ >
+ <svg
+ xmlns="http://www.w3.org/2000/svg"
+ fill="none"
+ viewBox="0 0 24 24"
+ stroke-width="2"
+ stroke="currentColor"
+ class="size-4"
+ aria-hidden="true"
+ >
+ <path
+ stroke-linecap="round"
+ stroke-linejoin="round"
+ d="m2.25 12 8.954-8.955c.44-.439 1.152-.439 1.591 0L21.75 12M4.5 9.75v10.5a.75.75 0 0 0 .75.75h4.5a.75.75 0 0 0 .75-.75V15a.75.75 0 0 1 .75-.75h3a.75.75 0 0 1 .75.75v5.25a.75.75 0 0 0 .75.75h4.5a.75.75 0 0 0 .75-.75V9.75M8.25 21h8.25"
+ />
+ </svg>
+ </a>
+ <span
+ class="shrink-0 select-none px-1 font-mono text-[10px] leading-none text-base-content/30"
+ title="Build version (git short hash)"
+ >
+ build: {__APP_VERSION__}
+ </span>
+ <button
+ class="btn btn-square btn-ghost btn-sm mx-1 shrink-0"
+ aria-label={sidebarOpen ? "Close sidebar" : "Open sidebar"}
+ aria-expanded={sidebarOpen}
+ onclick={() => (sidebarOpen = !sidebarOpen)}
+ >
+ <svg
+ xmlns="http://www.w3.org/2000/svg"
+ fill="none"
+ viewBox="0 0 24 24"
+ stroke-width="2"
+ stroke="currentColor"
+ class="size-5"
+ aria-hidden="true"
+ >
+ {#if sidebarOpen}
+ <!-- Sidebar open → chevrons point right -->
+ <path
+ stroke-linecap="round"
+ stroke-linejoin="round"
+ d="m11.25 4.5 7.5 7.5-7.5 7.5m-7.5-15 7.5 7.5-7.5 7.5"
+ />
+ {:else}
+ <!-- Sidebar closed → chevrons point left -->
+ <path
+ stroke-linecap="round"
+ stroke-linejoin="round"
+ d="M18.75 19.5l-7.5-7.5 7.5-7.5m-6 15L5.25 12l7.5-7.5"
+ />
+ {/if}
+ </svg>
+ </button>
</div>
- <div class="flex-1 overflow-y-auto">
- <ChatView chunks={store.activeChat.chunks} />
+ {#if store.lastError}
+ <div role="alert" class="alert alert-error mx-4 mt-2">
+ <strong>Error:</strong>
+ {store.lastError.message}
+ </div>
+ {/if}
+
+ {#if store.activeChat.error}
+ <div role="alert" class="alert alert-warning mx-4 mt-2">
+ <strong>Chat error:</strong>
+ {store.activeChat.error}
+ </div>
+ {/if}
+
+ <div class="relative min-h-0 min-w-0 flex-1 pr-4">
+ <div bind:this={transcriptEl} class="h-full overflow-y-auto">
+ <div bind:this={transcriptContentEl}>
+ {#key store.activeConversationId}
+ <ChatView
+ chunks={store.activeChat.chunks}
+ turnMetrics={store.activeChat.turnMetrics}
+ hasEarlier={store.activeChat.hasEarlier}
+ onShowEarlier={handleShowEarlier}
+ thinkingKeyBase={store.activeChat.thinkingKeyBase}
+ providerRetry={store.activeChat.providerRetry}
+ apiBaseUrl={store.httpBase}
+ />
+ {/key}
+ </div>
+ </div>
+ {#if store.activeChat.chunks.length === 0}
+ <div
+ class="pointer-events-none absolute inset-0 flex items-center justify-center"
+ aria-hidden="true"
+ >
+ <span class="select-none text-4xl font-bold opacity-10">Dispatch</span>
+ </div>
+ {/if}
+ <ScrollToBottom show={smartScroll.showButton} onResume={() => smartScroll.resume()} />
</div>
- <Composer onSend={handleSend} />
+ {#if hasQueuedMessages && messageQueueSpec !== null}
+ <!-- Pending steering messages (the message-queue surface). Rendered via
+ the generic SurfaceView (dispatches on rendererId, never surface id);
+ only shown when the queue is non-empty — an idle queue is hidden. -->
+ <div class="px-4 pt-2">
+ <SurfaceView spec={messageQueueSpec} onInvoke={handleInvoke} />
+ </div>
+ {/if}
+
+ <Composer
+ onSend={handleSend}
+ onQueue={handleQueue}
+ onStop={handleStop}
+ contextSize={store.activeChat.currentContextSize}
+ contextWindow={store.modelInfo[store.activeModel]?.contextWindow}
+ status={composerStatus}
+ />
</div>
- {#if store.catalog.length > 0}
- <section class="border-t border-base-300 p-4">
- <h2 class="mb-2 text-sm font-semibold">Surfaces</h2>
- <div class="flex flex-wrap gap-2">
- {#each store.catalog as entry (entry.id)}
- <button
- class="btn btn-sm"
- class:btn-active={entry.id === store.selectedId}
- aria-current={entry.id === store.selectedId ? "true" : undefined}
- onclick={() => handleSelect(entry.id)}
- >
- {entry.title}
- <span class="text-xs opacity-60">({entry.region})</span>
- </button>
- {/each}
- </div>
- </section>
+ <!-- Full-height right sidebar. On wide screens (`lg:relative`) it is in-flow, so
+ opening it shrinks the whole left column (push). Below `lg` it overlays
+ (`max-lg:absolute`, full height) with a backdrop. -->
+ <aside
+ class="flex shrink-0 flex-col overflow-x-hidden transition-[width] duration-300 ease-out max-lg:absolute max-lg:inset-y-0 max-lg:right-0 max-lg:z-30 lg:relative"
+ class:w-80={sidebarOpen}
+ class:w-0={!sidebarOpen}
+ >
+ <div
+ class="flex h-full w-80 flex-col gap-2 overflow-y-auto bg-base-100 pt-3 pr-3 pb-3 transition-transform duration-300 ease-out"
+ style="transform: translateX({sidebarOpen ? '0' : '100%'})"
+ >
+ <ViewSidebar kinds={viewKinds} initial={sidebarPanels} onChange={handleSidebarChange} content={viewContent} />
+ </div>
+ </aside>
+
+ <!-- Backdrop: only on narrow screens (overlay mode), click to close. -->
+ {#if sidebarOpen}
+ <!-- svelte-ignore a11y_no_static_element_interactions -->
+ <div
+ class="fixed inset-0 z-20 bg-black/30 lg:hidden"
+ role="button"
+ tabindex="0"
+ aria-label="Close sidebar"
+ onclick={() => (sidebarOpen = false)}
+ onkeydown={(e) => {
+ if (e.key === "Escape" || e.key === "Enter") sidebarOpen = false;
+ }}
+ ></div>
{/if}
+</main>
+
+{#if store.fatalError}
+ <ErrorModal error={store.fatalError} onDismiss={() => store.clearFatalError()} />
+{/if}
- {#if store.selectedSpec}
- <section class="border-t border-base-300 p-4">
- <SurfaceView spec={store.selectedSpec} onInvoke={handleInvoke} />
+{#if systemPromptModalOpen}
+ <SystemPromptBuilder
+ loadPrompt={loadSystemPromptPrompt}
+ savePrompt={saveSystemPromptPrompt}
+ loadVariables={loadSystemPromptVariablesPrompt}
+ onClose={() => (systemPromptModalOpen = false)}
+ />
+{/if}
+
+{#if heartbeatRun !== null}
+ <!-- Keyed per run so switching runs (or re-opening) re-mounts the modal — a
+ fresh watch store lifecycle per run. The modal owns the live watch
+ (openChat/closeChat) and the Stop button. -->
+ {#key heartbeatRun.id}
+ <RunModal
+ run={heartbeatRun}
+ openChat={openRunChat}
+ closeChat={closeRunChat}
+ stopRun={stopHeartbeatRun}
+ onClose={() => (heartbeatRun = null)}
+ apiBaseUrl={store.httpBase}
+ />
+ {/key}
+{/if}
+
+{#snippet viewContent(kind: string)}
+ {#if kind === "tabs"}
+ <!-- The conversation tab list (moved out of the top bar into the sidebar).
+ Re-mount per workspace so the filtered tab set + scroll reset cleanly
+ on a workspace switch. -->
+ {#key store.activeWorkspaceId}
+ <TabList
+ tabs={store.tabs}
+ activeConversationId={store.activeConversationId}
+ statusFor={(id) => store.conversationStatus(id)}
+ onSelect={(id) => store.selectTab(id)}
+ onClose={(id) => store.closeTab(id)}
+ onNewDraft={() => store.newDraft()}
+ onRename={(id, title) => store.renameTab(id, title)}
+ />
+ {/key}
+ {:else if kind === "model"}
+ <div class="flex flex-col gap-3">
+ <ModelSelector
+ models={store.models}
+ selected={store.activeModel}
+ onSelect={handleSelectModel}
+ modelInfo={store.modelInfo}
+ />
+ <!-- Keyed on the workspace conversation (active tab OR draft) so the inputs
+ re-mount per conversation — incl. switching between drafts — and can't
+ bleed across tabs. Editable for a draft too (cwd + effort apply from turn 1). -->
+ {#key store.currentConversationId}
+ <ReasoningEffortSelector persisted={store.reasoningEffort} save={saveReasoningEffort} />
+ <CwdField cwd={store.cwd} canEdit={true} save={saveCwd} />
+ <ComputerField
+ computerId={store.computerId}
+ canEdit={true}
+ computers={store.computers}
+ save={saveComputer}
+ loadStatus={loadComputerStatus}
+ test={testComputer}
+ />
+ {/key}
+ </div>
+ {:else if kind === "lsp"}
+ <!-- Re-mount per conversation (incl. draft) so the loaded server list is isolated. -->
+ {#key store.currentConversationId}
+ <LspStatusView cwd={store.cwd} canView={true} load={loadLspStatus} />
+ {/key}
+ {:else if kind === "mcp"}
+ <!-- Re-mount per conversation (incl. draft) so the loaded server list is isolated. -->
+ {#key store.currentConversationId}
+ <McpStatusView cwd={store.cwd} canView={true} load={loadMcpStatus} />
+ {/key}
+ {:else if kind === "extensions"}
+ <section>
+ <h3 class="mb-1 text-xs font-semibold uppercase opacity-60">Frontend modules</h3>
+ <Table columns={MODULE_COLUMNS} rows={loadedModules} />
+ </section>
+ <section class="mt-4 flex flex-col gap-3">
+ <h3 class="text-xs font-semibold uppercase opacity-60">Surfaces</h3>
+ {#each store.surfaces.filter((s) => s.id !== CACHE_WARMING_ID && s.id !== MESSAGE_QUEUE_ID && s.id !== TODO_ID) as spec (spec.id)}
+ <SurfaceView {spec} onInvoke={handleInvoke} />
+ {/each}
</section>
+ {:else if kind === "cache-warming"}
+ <!-- Re-mount per conversation (like ChatView) so the view's local warming
+ history / manual-warm feedback can't bleed across tabs. -->
+ {#key store.activeConversationId}
+ <CacheWarmingView
+ spec={store.surface(CACHE_WARMING_ID)}
+ canWarm={store.activeConversationId !== null}
+ onInvoke={handleInvoke}
+ {warmNow}
+ />
+ {/key}
+ {:else if kind === "tasks"}
+ <!-- Re-mount per conversation so the task list is isolated per conversation.
+ TodoList always reserves its fixed 60vh height (empty or full). -->
+ {#key store.activeConversationId}
+ <TodoList payload={todoData} />
+ {/key}
+ {:else if kind === "compaction"}
+ <!-- Message compaction is per-conversation (keyed so the percent + feedback
+ can't bleed across tabs). Vision (image-compaction) settings are GLOBAL,
+ so they stay mounted across conversation switches (no {#key}). -->
+ {#key store.currentConversationId}
+ <CompactionView
+ percent={store.compactPercent}
+ canCompact={store.activeConversationId !== null}
+ {compactNow}
+ savePercent={saveCompactPercent}
+ />
+ {/key}
+ <div class="divider my-1 text-xs text-base-content/40">Image compaction</div>
+ <VisionSettingsView
+ models={store.models}
+ modelInfo={store.modelInfo}
+ load={loadVisionSettings}
+ save={saveVisionSettings}
+ />
+ {:else if kind === "system-prompt"}
+ <!-- Global system prompt template. Opens a full-page modal editor (half
+ template / half variable palette). Not conversation-scoped (no {#key}). -->
+ <div class="flex flex-col gap-2">
+ <p class="text-xs opacity-60">
+ Edit the global system prompt template with variable placeholders. Opens a full-page editor.
+ </p>
+ <button
+ type="button"
+ class="btn btn-primary btn-sm"
+ onclick={() => (systemPromptModalOpen = true)}
+ >
+ Open builder
+ </button>
+ </div>
+ {:else if kind === "settings"}
+ <!-- FE-local settings. Not conversation-scoped (no {#key}: the chat limit is
+ global), so the field stays mounted across tab switches. -->
+ <div class="flex flex-col gap-3">
+ <ChatLimitField chatLimit={store.chatLimit} save={saveChatLimit} />
+ </div>
+ {:else if kind === "heartbeat"}
+ <!-- Workspace-scoped autonomous-agent heartbeat (config + run history).
+ Not conversation-scoped (no {#key}); the config + runs are per-workspace. -->
+ <HeartbeatView
+ models={store.models}
+ loadConfig={loadHeartbeatConfig}
+ saveConfig={saveHeartbeatConfig}
+ loadRuns={loadHeartbeatRuns}
+ stopRun={stopHeartbeatRun}
+ loadVariables={loadSystemPromptVariablesPrompt}
+ loadDefaultPrompt={loadSystemPromptPrompt}
+ loadNextRun={loadHeartbeatNextRun}
+ onOpenRun={(run) => (heartbeatRun = run)}
+ />
+ {:else if kind === "concurrency"}
+ <!-- Per-provider concurrency limits + live status. GLOBAL (not workspace- or
+ conversation-scoped), so the panel stays mounted across tab switches. -->
+ <ConcurrencyView
+ models={store.models}
+ loadLimits={loadConcurrencyLimits}
+ saveLimit={saveConcurrencyLimit}
+ deleteLimit={deleteConcurrencyLimit}
+ loadStatus={loadConcurrencyStatus}
+ saveCooldown={saveConcurrencyCooldown}
+ />
{/if}
-</main>
+{/snippet}
diff --git a/src/app/App.test.ts b/src/app/App.test.ts
index 8110d41..dcdcb9b 100644
--- a/src/app/App.test.ts
+++ b/src/app/App.test.ts
@@ -1,406 +1,586 @@
-import type { WsServerMessage } from "@dispatch/transport-contract";
+import type { SetCwdRequest, WsServerMessage } from "@dispatch/transport-contract";
import type { SurfaceServerMessage } from "@dispatch/ui-contract";
-import { render, screen, within } from "@testing-library/svelte";
+import { render, screen } from "@testing-library/svelte";
import userEvent from "@testing-library/user-event";
-import { describe, expect, it } from "vitest";
+import { describe, expect, it, vi } from "vitest";
import type { WebSocketLike } from "../adapters/ws";
import App from "./App.svelte";
import { createAppStore } from "./store.svelte";
interface FakeSocket extends WebSocketLike {
- sent: string[];
- resolveOpen(): void;
- feedServerMessage(data: WsServerMessage): void;
- feedSurfaceMessage(data: SurfaceServerMessage): void;
+ sent: string[];
+ resolveOpen(): void;
+ feedServerMessage(data: WsServerMessage): void;
+ feedSurfaceMessage(data: SurfaceServerMessage): void;
}
function fakeSocket(): FakeSocket {
- let onopen: (() => void) | null = null;
- let onmessage: ((ev: { data: string }) => void) | null = null;
- const sent: string[] = [];
-
- const ws: FakeSocket = {
- send(data: string) {
- sent.push(data);
- },
- close() {},
- get onopen() {
- return onopen;
- },
- set onopen(fn) {
- onopen = fn;
- },
- get onmessage() {
- return onmessage;
- },
- set onmessage(fn) {
- onmessage = fn;
- },
- get onclose() {
- return null;
- },
- set onclose(_fn) {},
- resolveOpen() {
- onopen?.();
- },
- feedServerMessage(msg: WsServerMessage) {
- onmessage?.({ data: JSON.stringify(msg) });
- },
- feedSurfaceMessage(msg: SurfaceServerMessage) {
- onmessage?.({ data: JSON.stringify(msg) });
- },
- sent,
- };
- return ws;
+ let onopen: (() => void) | null = null;
+ let onmessage: ((ev: { data: string }) => void) | null = null;
+ const sent: string[] = [];
+
+ const ws: FakeSocket = {
+ send(data: string) {
+ sent.push(data);
+ },
+ close() {},
+ get onopen() {
+ return onopen;
+ },
+ set onopen(fn) {
+ onopen = fn;
+ },
+ get onmessage() {
+ return onmessage;
+ },
+ set onmessage(fn) {
+ onmessage = fn;
+ },
+ get onclose() {
+ return null;
+ },
+ set onclose(_fn) {},
+ resolveOpen() {
+ onopen?.();
+ },
+ feedServerMessage(msg: WsServerMessage) {
+ onmessage?.({ data: JSON.stringify(msg) });
+ },
+ feedSurfaceMessage(msg: SurfaceServerMessage) {
+ onmessage?.({ data: JSON.stringify(msg) });
+ },
+ sent,
+ };
+ return ws;
}
function fakeFetchImpl(): typeof fetch {
- return async (input: string | URL | Request): Promise<Response> => {
- const url = typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
- if (url.endsWith("/models")) {
- return new Response(JSON.stringify({ models: ["opencode/deepseek-v4-flash"] }), {
- status: 200,
- });
- }
- return new Response(JSON.stringify({ chunks: [], latestSeq: 0 }), { status: 200 });
- };
+ return async (input: string | URL | Request): Promise<Response> => {
+ const url = typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ if (url.endsWith("/models")) {
+ return new Response(JSON.stringify({ models: ["opencode/deepseek-v4-flash"] }), {
+ status: 200,
+ });
+ }
+ if (url.includes("/conversations?status=")) {
+ return new Response(JSON.stringify({ conversations: [] }), { status: 200 });
+ }
+ if (url.endsWith("/cwd")) {
+ return new Response(JSON.stringify({ conversationId: "c", cwd: null }), { status: 200 });
+ }
+ if (url.endsWith("/lsp")) {
+ return new Response(JSON.stringify({ conversationId: "c", cwd: null, servers: [] }), {
+ status: 200,
+ });
+ }
+ return new Response(JSON.stringify({ chunks: [], latestSeq: 0 }), { status: 200 });
+ };
}
function createFakeStorage(): Storage {
- const map = new Map<string, string>();
- return {
- get length() {
- return map.size;
- },
- clear() {
- map.clear();
- },
- getItem(key: string): string | null {
- return map.get(key) ?? null;
- },
- key(_index: number): string | null {
- return null;
- },
- removeItem(key: string) {
- map.delete(key);
- },
- setItem(key: string, value: string) {
- map.set(key, value);
- },
- };
+ const map = new Map<string, string>();
+ return {
+ get length() {
+ return map.size;
+ },
+ clear() {
+ map.clear();
+ },
+ getItem(key: string): string | null {
+ return map.get(key) ?? null;
+ },
+ key(_index: number): string | null {
+ return null;
+ },
+ removeItem(key: string) {
+ map.delete(key);
+ },
+ setItem(key: string, value: string) {
+ map.set(key, value);
+ },
+ };
+}
+
+function createFakeStorageWithViews(views: readonly string[] = ["extensions"]): Storage {
+ const storage = createFakeStorage();
+ storage.setItem("dispatch.sidebar.views", JSON.stringify(views));
+ return storage;
}
function sentMessages(ws: FakeSocket) {
- return ws.sent.map((s) => JSON.parse(s));
+ return ws.sent.map((s) => JSON.parse(s));
}
function activeConversationId(store: ReturnType<typeof createAppStore>): string {
- const id = store.activeConversationId;
- expect(id).not.toBeNull();
- return id as string;
+ const id = store.activeConversationId;
+ expect(id).not.toBeNull();
+ return id as string;
}
describe("App component interaction tests", () => {
- it("renders the model selector and composer in draft mode", () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- render(App, { props: { store } });
-
- expect(screen.getByRole("textbox", { name: "Message input" })).toBeInTheDocument();
- expect(screen.getByRole("button", { name: "Send" })).toBeInTheDocument();
- expect(screen.getByRole("combobox", { name: "Model selector" })).toBeInTheDocument();
-
- store.dispose();
- });
-
- it("renders catalog buttons when surfaces are available", () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- ws.feedSurfaceMessage({
- type: "catalog",
- catalog: [
- { id: "s1", region: "sidebar", title: "Surface One" },
- { id: "s2", region: "panel", title: "Surface Two" },
- ],
- });
-
- render(App, { props: { store } });
-
- const surfacesSection = screen.getByRole("heading", { name: "Surfaces" }).closest("section");
- if (surfacesSection === null) throw new Error("Surfaces section not found");
- const buttons = within(surfacesSection).getAllByRole("button");
- expect(buttons).toHaveLength(2);
- expect(buttons[0]).toHaveTextContent("Surface One");
- expect(buttons[1]).toHaveTextContent("Surface Two");
-
- store.dispose();
- });
-
- it("clicking a catalog entry subscribes and renders its surface", async () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- ws.feedSurfaceMessage({
- type: "catalog",
- catalog: [{ id: "s1", region: "sidebar", title: "Surface One" }],
- });
-
- render(App, { props: { store } });
-
- const user = userEvent.setup();
- const button = screen.getByRole("button", { name: /Surface One/ });
- ws.sent.length = 0;
- await user.click(button);
-
- const msgs = sentMessages(ws);
- const subscribe = msgs.find(
- (m: { type: string; surfaceId: string }) => m.type === "subscribe" && m.surfaceId === "s1",
- );
- expect(subscribe).toBeTruthy();
-
- ws.feedSurfaceMessage({
- type: "surface",
- spec: {
- id: "s1",
- region: "sidebar",
- title: "Surface One",
- fields: [{ kind: "stat", label: "Tokens", value: "1,234" }],
- },
- });
-
- expect(await screen.findByRole("heading", { name: "Surface One" })).toBeInTheDocument();
- expect(await screen.findByText("Tokens")).toBeInTheDocument();
- expect(await screen.findByText("1,234")).toBeInTheDocument();
-
- store.dispose();
- });
-
- it("clicking a different entry unsubscribes the previous then subscribes the new", async () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- ws.feedSurfaceMessage({
- type: "catalog",
- catalog: [
- { id: "s1", region: "sidebar", title: "Surface One" },
- { id: "s2", region: "panel", title: "Surface Two" },
- ],
- });
-
- render(App, { props: { store } });
-
- const user = userEvent.setup();
- await user.click(screen.getByRole("button", { name: /Surface One/ }));
- ws.sent.length = 0;
-
- await user.click(screen.getByRole("button", { name: /Surface Two/ }));
-
- const msgs = sentMessages(ws) as Array<{ type: string; surfaceId: string }>;
- const unsubIdx = msgs.findIndex((m) => m.type === "unsubscribe" && m.surfaceId === "s1");
- const subIdx = msgs.findIndex((m) => m.type === "subscribe" && m.surfaceId === "s2");
- expect(unsubIdx).toBeGreaterThanOrEqual(0);
- expect(subIdx).toBeGreaterThanOrEqual(0);
- expect(unsubIdx).toBeLessThan(subIdx);
-
- store.dispose();
- });
-
- it("selected catalog button reflects aria-current", async () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- ws.feedSurfaceMessage({
- type: "catalog",
- catalog: [
- { id: "s1", region: "sidebar", title: "Surface One" },
- { id: "s2", region: "panel", title: "Surface Two" },
- ],
- });
-
- render(App, { props: { store } });
-
- const user = userEvent.setup();
- const btn1 = screen.getByRole("button", { name: /Surface One/ });
- const btn2 = screen.getByRole("button", { name: /Surface Two/ });
-
- await user.click(btn1);
- expect(btn1).toHaveAttribute("aria-current", "true");
- expect(btn2).not.toHaveAttribute("aria-current");
-
- await user.click(btn2);
- expect(btn2).toHaveAttribute("aria-current", "true");
- expect(btn1).not.toHaveAttribute("aria-current");
-
- store.dispose();
- });
-
- it("an error message renders the alert banner", () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- ws.feedSurfaceMessage({
- type: "error",
- message: "Something went wrong",
- });
-
- render(App, { props: { store } });
-
- const alert = screen.getByRole("alert");
- expect(alert).toHaveTextContent("Something went wrong");
-
- store.dispose();
- });
-
- it("invoking a field action sends an invoke", async () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- ws.feedSurfaceMessage({
- type: "catalog",
- catalog: [{ id: "s1", region: "sidebar", title: "Surface One" }],
- });
-
- render(App, { props: { store } });
-
- const user = userEvent.setup();
- await user.click(screen.getByRole("button", { name: /Surface One/ }));
-
- ws.feedSurfaceMessage({
- type: "surface",
- spec: {
- id: "s1",
- region: "sidebar",
- title: "Surface One",
- fields: [
- {
- kind: "toggle",
- label: "Dark Mode",
- value: false,
- action: { actionId: "toggle-dark" },
- },
- ],
- },
- });
-
- ws.sent.length = 0;
- const checkbox = await screen.findByRole("checkbox", { name: "Dark Mode" });
- await user.click(checkbox);
-
- const msgs = sentMessages(ws);
- const invoke = msgs.find(
- (m: { type: string; surfaceId: string; actionId: string; payload: unknown }) =>
- m.type === "invoke" &&
- m.surfaceId === "s1" &&
- m.actionId === "toggle-dark" &&
- m.payload === true,
- );
- expect(invoke).toBeTruthy();
-
- store.dispose();
- });
-
- it("typing and sending a message posts chat.send on the socket", async () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- render(App, { props: { store } });
-
- const user = userEvent.setup();
- const textarea = screen.getByRole("textbox", { name: "Message input" });
- await user.type(textarea, "hello from UI");
-
- ws.sent.length = 0;
- const sendBtn = screen.getByRole("button", { name: "Send" });
- await user.click(sendBtn);
-
- const msgs = sentMessages(ws);
- const chatSend = msgs.find((m: { type: string }) => m.type === "chat.send") as
- | { type: string; conversationId: string; message: string }
- | undefined;
- expect(chatSend).toBeTruthy();
- expect(chatSend?.message).toBe("hello from UI");
-
- store.dispose();
- });
-
- it("incoming chat.delta renders text in the chat transcript", async () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- // Promote draft to tab
- store.send("test");
- const convId = activeConversationId(store);
-
- render(App, { props: { store } });
-
- ws.feedServerMessage({
- type: "chat.delta",
- event: {
- type: "turn-start",
- conversationId: convId,
- turnId: "turn-1",
- },
- });
-
- ws.feedServerMessage({
- type: "chat.delta",
- event: {
- type: "text-delta",
- conversationId: convId,
- turnId: "turn-1",
- delta: "Hi there!",
- },
- });
-
- expect(await screen.findByText("Hi there!")).toBeInTheDocument();
-
- store.dispose();
- });
+ it("renders the model selector and composer in draft mode", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ render(App, { props: { store, onNavigate: vi.fn() } });
+
+ expect(screen.getByRole("textbox", { name: "Message input" })).toBeInTheDocument();
+ expect(screen.getByRole("button", { name: "Send" })).toBeInTheDocument();
+ expect(screen.getByRole("combobox", { name: "Model selector" })).toBeInTheDocument();
+
+ store.dispose();
+ });
+
+ it("shows 'New Tab' in the top bar for an unstarted draft (no active tab)", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ render(App, { props: { store, onNavigate: vi.fn() } });
+
+ expect(store.activeConversationId).toBeNull();
+ expect(screen.getByTestId("top-bar-title")).toHaveTextContent("New Tab");
+
+ store.dispose();
+ });
+
+ it("shows the active tab's title in the top bar once a tab is started", async () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ render(App, { props: { store, onNavigate: vi.fn() } });
+
+ // Promote draft → tab: the tab's title is derived from the first message.
+ store.send("Refactor the auth module");
+ expect(store.activeConversationId).not.toBeNull();
+
+ // The top-bar title updates reactively; findByTestId awaits the flush.
+ expect(await screen.findByTestId("top-bar-title")).toHaveTextContent(
+ "Refactor the auth module",
+ );
+
+ store.dispose();
+ });
+
+ it("the dashboard home button navigates to '/' (back to the workspaces home)", async () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ const onNavigate = vi.fn();
+ render(App, { props: { store, onNavigate } });
+
+ const homeBtn = screen.getByRole("link", { name: "Back to dashboard" });
+ expect(homeBtn).toHaveAttribute("href", "/");
+ await userEvent.setup().click(homeBtn);
+
+ expect(onNavigate).toHaveBeenCalledTimes(1);
+ expect(onNavigate).toHaveBeenCalledWith("/");
+
+ store.dispose();
+ });
+
+ it("auto-subscribes to every catalog entry on render (no buttons to click)", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ ws.sent.length = 0;
+ ws.feedSurfaceMessage({
+ type: "catalog",
+ catalog: [
+ { id: "s1", region: "sidebar", title: "Surface One" },
+ { id: "s2", region: "panel", title: "Surface Two" },
+ ],
+ });
+
+ render(App, { props: { store, onNavigate: vi.fn() } });
+
+ const subscribed = sentMessages(ws)
+ .filter((m: { type: string }) => m.type === "subscribe")
+ .map((m: { surfaceId: string }) => m.surfaceId);
+ expect(subscribed).toContain("s1");
+ expect(subscribed).toContain("s2");
+
+ store.dispose();
+ });
+
+ it("renders every surface expanded once their specs arrive", async () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorageWithViews(),
+ });
+ ws.resolveOpen();
+
+ ws.feedSurfaceMessage({
+ type: "catalog",
+ catalog: [
+ { id: "s1", region: "sidebar", title: "Surface One" },
+ { id: "s2", region: "panel", title: "Surface Two" },
+ ],
+ });
+
+ render(App, { props: { store, onNavigate: vi.fn() } });
+
+ // No interaction: specs arrive and both surfaces render expanded.
+ ws.feedSurfaceMessage({
+ type: "surface",
+ spec: {
+ id: "s1",
+ region: "sidebar",
+ title: "Surface One",
+ fields: [{ kind: "stat", label: "Tokens", value: "1,234" }],
+ },
+ });
+ ws.feedSurfaceMessage({
+ type: "surface",
+ spec: { id: "s2", region: "panel", title: "Surface Two", fields: [] },
+ });
+
+ expect(await screen.findByRole("heading", { name: "Surface One" })).toBeInTheDocument();
+ expect(await screen.findByRole("heading", { name: "Surface Two" })).toBeInTheDocument();
+ expect(await screen.findByText("Tokens")).toBeInTheDocument();
+ expect(await screen.findByText("1,234")).toBeInTheDocument();
+
+ store.dispose();
+ });
+
+ it("an error message renders the alert banner", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ ws.feedSurfaceMessage({
+ type: "error",
+ message: "Something went wrong",
+ });
+
+ render(App, { props: { store, onNavigate: vi.fn() } });
+
+ const alert = screen.getByRole("alert");
+ expect(alert).toHaveTextContent("Something went wrong");
+
+ store.dispose();
+ });
+
+ it("invoking a field action sends an invoke", async () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorageWithViews(),
+ });
+ ws.resolveOpen();
+
+ ws.feedSurfaceMessage({
+ type: "catalog",
+ catalog: [{ id: "s1", region: "sidebar", title: "Surface One" }],
+ });
+
+ render(App, { props: { store, onNavigate: vi.fn() } });
+
+ const user = userEvent.setup();
+ // Surface is auto-subscribed; its spec arrives and renders expanded.
+ ws.feedSurfaceMessage({
+ type: "surface",
+ spec: {
+ id: "s1",
+ region: "sidebar",
+ title: "Surface One",
+ fields: [
+ {
+ kind: "toggle",
+ label: "Dark Mode",
+ value: false,
+ action: { actionId: "toggle-dark" },
+ },
+ ],
+ },
+ });
+
+ ws.sent.length = 0;
+ const checkbox = await screen.findByRole("checkbox", { name: "Dark Mode" });
+ await user.click(checkbox);
+
+ const msgs = sentMessages(ws);
+ const invoke = msgs.find(
+ (m: { type: string; surfaceId: string; actionId: string; payload: unknown }) =>
+ m.type === "invoke" &&
+ m.surfaceId === "s1" &&
+ m.actionId === "toggle-dark" &&
+ m.payload === true,
+ );
+ expect(invoke).toBeTruthy();
+
+ store.dispose();
+ });
+
+ it("typing and sending a message posts chat.send on the socket", async () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ render(App, { props: { store, onNavigate: vi.fn() } });
+
+ const user = userEvent.setup();
+ const textarea = screen.getByRole("textbox", { name: "Message input" });
+ await user.type(textarea, "hello from UI");
+
+ ws.sent.length = 0;
+ const sendBtn = screen.getByRole("button", { name: "Send" });
+ await user.click(sendBtn);
+
+ const msgs = sentMessages(ws);
+ const chatSend = msgs.find((m: { type: string }) => m.type === "chat.send") as
+ | { type: string; conversationId: string; message: string }
+ | undefined;
+ expect(chatSend).toBeTruthy();
+ expect(chatSend?.message).toBe("hello from UI");
+
+ store.dispose();
+ });
+
+ it("incoming chat.delta renders text in the chat transcript", async () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ // Promote draft to tab
+ store.send("test");
+ const convId = activeConversationId(store);
+
+ render(App, { props: { store, onNavigate: vi.fn() } });
+
+ ws.feedServerMessage({
+ type: "chat.delta",
+ event: {
+ type: "turn-start",
+ conversationId: convId,
+ turnId: "turn-1",
+ },
+ });
+
+ ws.feedServerMessage({
+ type: "chat.delta",
+ event: {
+ type: "text-delta",
+ conversationId: convId,
+ turnId: "turn-1",
+ delta: "Hi there!",
+ },
+ });
+
+ expect(await screen.findByText("Hi there!")).toBeInTheDocument();
+
+ store.dispose();
+ });
+
+ it("renders a custom 'table' field of a surface as a table", async () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorageWithViews(),
+ });
+ ws.resolveOpen();
+
+ ws.feedSurfaceMessage({
+ type: "catalog",
+ catalog: [{ id: "s1", region: "sidebar", title: "Surface One" }],
+ });
+
+ render(App, { props: { store, onNavigate: vi.fn() } });
+
+ // Auto-subscribed; the custom-table spec arrives and renders expanded.
+ ws.feedSurfaceMessage({
+ type: "surface",
+ spec: {
+ id: "s1",
+ region: "sidebar",
+ title: "Surface One",
+ fields: [
+ {
+ kind: "custom",
+ rendererId: "table",
+ payload: {
+ columns: ["Name", "Scope"],
+ rows: [["cache-warm", "backend"]],
+ },
+ },
+ ],
+ },
+ });
+
+ expect(await screen.findByRole("columnheader", { name: "Name" })).toBeInTheDocument();
+ expect(await screen.findByText("cache-warm")).toBeInTheDocument();
+ expect(await screen.findByText("backend")).toBeInTheDocument();
+
+ store.dispose();
+ });
+
+ it("the Extensions view lists frontend modules aggregated from feature manifests", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorageWithViews(),
+ });
+ ws.resolveOpen();
+
+ render(App, { props: { store, onNavigate: vi.fn() } });
+
+ // Extensions view is pre-populated in the fake storage, so the modules table renders immediately.
+ expect(screen.getByRole("columnheader", { name: "Module" })).toBeInTheDocument();
+ for (const name of [
+ "chat",
+ "tabs",
+ "surface-host",
+ "views",
+ "conversation-cache",
+ "markdown",
+ ]) {
+ expect(screen.getByRole("cell", { name })).toBeInTheDocument();
+ }
+
+ store.dispose();
+ });
+
+ it("shows a full-screen error modal when fetchOpenConversations fails", async () => {
+ // A fetch that throws for the conversations list endpoint (simulating a
+ // network failure / unreachable backend on a new device).
+ const failingFetch = async (input: string | URL | Request): Promise<Response> => {
+ const url = typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ if (url.endsWith("/models")) {
+ return new Response(JSON.stringify({ models: ["opencode/deepseek-v4-flash"] }), {
+ status: 200,
+ });
+ }
+ if (url.includes("/conversations?status=")) {
+ throw new TypeError("Failed to fetch: network error");
+ }
+ if (url.endsWith("/cwd")) {
+ return new Response(JSON.stringify({ conversationId: "c", cwd: null }), { status: 200 });
+ }
+ if (url.endsWith("/lsp")) {
+ return new Response(JSON.stringify({ conversationId: "c", cwd: null, servers: [] }), {
+ status: 200,
+ });
+ }
+ return new Response(JSON.stringify({ chunks: [], latestSeq: 0 }), { status: 200 });
+ };
+
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: failingFetch,
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ render(App, { props: { store, onNavigate: vi.fn() } });
+
+ // The modal should appear with the error text
+ const dialog = await screen.findByRole("dialog", { name: "Error" }, { timeout: 3000 });
+ expect(dialog).toBeInTheDocument();
+ expect(dialog).toHaveTextContent("Failed to load conversations");
+ expect(dialog).toHaveTextContent("TypeError");
+ expect(dialog).toHaveTextContent("network error");
+
+ // Dismiss button clears the modal
+ const dismissBtn = screen.getByRole("button", { name: "Dismiss error" });
+ await userEvent.setup().click(dismissBtn);
+ expect(store.fatalError).toBeNull();
+
+ store.dispose();
+ });
+
+ it("does not show the error modal when fetchOpenConversations succeeds", async () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(), // returns valid empty conversations list
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ render(App, { props: { store, onNavigate: vi.fn() } });
+
+ // Wait a tick for boot async to settle
+ await new Promise((resolve) => setTimeout(resolve, 200));
+
+ expect(store.fatalError).toBeNull();
+
+ store.dispose();
+ });
+
+ it("sends workspaceId when setting cwd", async () => {
+ let capturedBody: SetCwdRequest | undefined;
+ const fetchWithCapture = async (
+ input: string | URL | Request,
+ init?: RequestInit,
+ ): Promise<Response> => {
+ const url = typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ if (url.endsWith("/cwd") && init?.method === "PUT") {
+ capturedBody = JSON.parse(init.body as string) as SetCwdRequest;
+ return new Response(JSON.stringify({ conversationId: "c", cwd: capturedBody.cwd }), {
+ status: 200,
+ });
+ }
+ return fakeFetchImpl()(input);
+ };
+
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fetchWithCapture,
+ localStorage: createFakeStorage(),
+ workspaceId: "my-team",
+ });
+ ws.resolveOpen();
+
+ // Let async boot settle before mutating cwd.
+ await new Promise((resolve) => setTimeout(resolve, 50));
+
+ const result = await store.setCwd("arch-rewrite");
+ expect(result).toMatchObject({ ok: true, cwd: "arch-rewrite" });
+ expect(capturedBody).toEqual({ cwd: "arch-rewrite", workspaceId: "my-team" });
+
+ store.dispose();
+ });
});
diff --git a/src/app/ErrorModal.svelte b/src/app/ErrorModal.svelte
new file mode 100644
index 0000000..0415827
--- /dev/null
+++ b/src/app/ErrorModal.svelte
@@ -0,0 +1,150 @@
+<script lang="ts">
+ /**
+ * Full-screen error modal — surfaces critical errors that would otherwise be
+ * silently swallowed (e.g. the cross-device tab-restore fetch failing). Shows
+ * the full error text + stack trace in a scrollable `<pre>`, a Copy button
+ * (clipboard), and an X to dismiss. Pure presentation: the error string and
+ * dismiss callback are injected as props.
+ */
+ let {
+ error,
+ onDismiss,
+ }: {
+ error: string;
+ onDismiss: () => void;
+ } = $props();
+
+ let copied = $state(false);
+ let copyTimer: ReturnType<typeof setTimeout> | undefined;
+
+ async function handleCopy(): Promise<void> {
+ try {
+ await navigator.clipboard.writeText(error);
+ copied = true;
+ clearTimeout(copyTimer);
+ copyTimer = setTimeout(() => {
+ copied = false;
+ }, 2000);
+ } catch {
+ // Clipboard API may be unavailable (non-secure context). Fallback:
+ // select the text so the user can Ctrl+C manually.
+ const pre = document.getElementById("error-modal-text");
+ if (pre !== null) {
+ const range = document.createRange();
+ range.selectNodeContents(pre);
+ const selection = window.getSelection();
+ selection?.removeAllRanges();
+ selection?.addRange(range);
+ }
+ }
+ }
+
+ function handleKeydown(event: KeyboardEvent): void {
+ if (event.key === "Escape") {
+ event.preventDefault();
+ onDismiss();
+ }
+ }
+</script>
+
+<svelte:window onkeydown={handleKeydown} />
+
+<!-- Full-screen overlay: fixed, high z-index, semi-transparent backdrop. -->
+<!-- svelte-ignore a11y_no_static_element_interactions -->
+<div
+ class="fixed inset-0 z-50 flex items-center justify-center bg-black/60 p-4"
+ role="dialog"
+ aria-modal="true"
+ aria-label="Error"
+>
+ <div class="flex max-h-[80vh] w-full max-w-2xl flex-col rounded-lg bg-base-100 shadow-xl">
+ <!-- Header -->
+ <div class="flex items-center justify-between border-b border-base-300 px-4 py-3">
+ <div class="flex items-center gap-2">
+ <svg
+ xmlns="http://www.w3.org/2000/svg"
+ fill="none"
+ viewBox="0 0 24 24"
+ stroke-width="2"
+ stroke="currentColor"
+ class="size-5 text-error"
+ aria-hidden="true"
+ >
+ <path
+ stroke-linecap="round"
+ stroke-linejoin="round"
+ d="M12 9v3.75m-9.303 3.376c-.866 1.5.217 3.374 1.948 3.374h14.71c1.73 0 2.813-1.874 1.948-3.374L13.949 3.378c-.866-1.5-3.032-1.5-3.898 0L2.697 16.126ZM12 15.75h.007v.008H12v-.008Z"
+ />
+ </svg>
+ <h2 class="text-lg font-semibold text-error">Something went wrong</h2>
+ </div>
+ <button
+ type="button"
+ class="btn btn-ghost btn-sm btn-square"
+ aria-label="Dismiss error"
+ onclick={onDismiss}
+ >
+ <svg
+ xmlns="http://www.w3.org/2000/svg"
+ fill="none"
+ viewBox="0 0 24 24"
+ stroke-width="2"
+ stroke="currentColor"
+ class="size-5"
+ aria-hidden="true"
+ >
+ <path stroke-linecap="round" stroke-linejoin="round" d="M6 18 18 6M6 6l12 12" />
+ </svg>
+ </button>
+ </div>
+
+ <!-- Body: scrollable error text -->
+ <div class="overflow-auto p-4">
+ <pre
+ id="error-modal-text"
+ class="whitespace-pre-wrap break-words font-mono text-xs leading-relaxed opacity-80">{error}</pre>
+ </div>
+
+ <!-- Footer: copy button -->
+ <div class="flex items-center justify-between gap-2 border-t border-base-300 px-4 py-3">
+ <span class="text-xs opacity-50">Press Esc to dismiss</span>
+ <button
+ type="button"
+ class="btn btn-sm {copied ? 'btn-success' : 'btn-outline'}"
+ onclick={handleCopy}
+ >
+ {#if copied}
+ <svg
+ xmlns="http://www.w3.org/2000/svg"
+ fill="none"
+ viewBox="0 0 24 24"
+ stroke-width="2"
+ stroke="currentColor"
+ class="size-4"
+ aria-hidden="true"
+ >
+ <path stroke-linecap="round" stroke-linejoin="round" d="m4.5 12.75 6 6 9-13.5" />
+ </svg>
+ Copied
+ {:else}
+ <svg
+ xmlns="http://www.w3.org/2000/svg"
+ fill="none"
+ viewBox="0 0 24 24"
+ stroke-width="2"
+ stroke="currentColor"
+ class="size-4"
+ aria-hidden="true"
+ >
+ <path
+ stroke-linecap="round"
+ stroke-linejoin="round"
+ d="M15.75 17.25v3.375c0 .621-.504 1.125-1.125 1.125h-9.75a1.125 1.125 0 0 1-1.125-1.125V7.875c0-.621.504-1.125 1.125-1.125H6.75a9.06 9.06 0 0 1 1.5.124m7.5 10.376h3.375c.621 0 1.125-.504 1.125-1.125V11.25c0-4.46-3.243-8.161-7.5-8.876a9.06 9.06 0 0 0-1.5-.124H9.375c-.621 0-1.125.504-1.125 1.125v3.5m7.5 10.375H9.375a1.125 1.125 0 0 1-1.125-1.125v-9.25m18 3.75h-3.75m3.75 0-2.25 2.25m2.25-2.25 2.25 2.25M4.5 6.75 6.75 4.5"
+ />
+ </svg>
+ Copy
+ {/if}
+ </button>
+ </div>
+ </div>
+</div>
diff --git a/src/app/resolve-http-url.test.ts b/src/app/resolve-http-url.test.ts
index 90edcbb..0da2591 100644
--- a/src/app/resolve-http-url.test.ts
+++ b/src/app/resolve-http-url.test.ts
@@ -2,55 +2,55 @@ import { describe, expect, it } from "vitest";
import { resolveHttpUrl } from "./resolve-http-url";
describe("resolveHttpUrl", () => {
- it("explicit url wins over everything", () => {
- const result = resolveHttpUrl(
- { VITE_HTTP_URL: "https://env.example.com:9999" },
- { protocol: "https:", hostname: "page.example.com" },
- );
- expect(result).toBe("https://env.example.com:9999");
- });
-
- it("VITE_HTTP_URL wins over derivation", () => {
- const result = resolveHttpUrl(
- { VITE_HTTP_URL: "https://env.example.com:8888" },
- { protocol: "http:", hostname: "page.example.com" },
- );
- expect(result).toBe("https://env.example.com:8888");
- });
-
- it("derives http://<hostname>:24203 from http location", () => {
- const result = resolveHttpUrl({}, { protocol: "http:", hostname: "100.126.75.103" });
- expect(result).toBe("http://100.126.75.103:24203");
- });
-
- it("derives https://<hostname>:24203 from https location", () => {
- const result = resolveHttpUrl({}, { protocol: "https:", hostname: "arch-razer" });
- expect(result).toBe("https://arch-razer:24203");
- });
-
- it("uses VITE_HTTP_PORT when set", () => {
- const result = resolveHttpUrl(
- { VITE_HTTP_PORT: "3000" },
- { protocol: "http:", hostname: "localhost" },
- );
- expect(result).toBe("http://localhost:3000");
- });
-
- it("falls back to http://localhost:24203 when location is missing", () => {
- const result = resolveHttpUrl({});
- expect(result).toBe("http://localhost:24203");
- });
-
- it("VITE_HTTP_URL empty string treated as unset", () => {
- const result = resolveHttpUrl({ VITE_HTTP_URL: "" }, { protocol: "http:", hostname: "myhost" });
- expect(result).toBe("http://myhost:24203");
- });
-
- it("VITE_HTTP_PORT empty string falls back to default", () => {
- const result = resolveHttpUrl(
- { VITE_HTTP_PORT: "" },
- { protocol: "http:", hostname: "localhost" },
- );
- expect(result).toBe("http://localhost:24203");
- });
+ it("explicit url wins over everything", () => {
+ const result = resolveHttpUrl(
+ { VITE_HTTP_URL: "https://env.example.com:9999" },
+ { protocol: "https:", hostname: "page.example.com" },
+ );
+ expect(result).toBe("https://env.example.com:9999");
+ });
+
+ it("VITE_HTTP_URL wins over derivation", () => {
+ const result = resolveHttpUrl(
+ { VITE_HTTP_URL: "https://env.example.com:8888" },
+ { protocol: "http:", hostname: "page.example.com" },
+ );
+ expect(result).toBe("https://env.example.com:8888");
+ });
+
+ it("derives http://<hostname>:24203 from http location", () => {
+ const result = resolveHttpUrl({}, { protocol: "http:", hostname: "100.126.75.103" });
+ expect(result).toBe("http://100.126.75.103:24203");
+ });
+
+ it("derives https://<hostname>:24203 from https location", () => {
+ const result = resolveHttpUrl({}, { protocol: "https:", hostname: "arch-razer" });
+ expect(result).toBe("https://arch-razer:24203");
+ });
+
+ it("uses VITE_HTTP_PORT when set", () => {
+ const result = resolveHttpUrl(
+ { VITE_HTTP_PORT: "3000" },
+ { protocol: "http:", hostname: "localhost" },
+ );
+ expect(result).toBe("http://localhost:3000");
+ });
+
+ it("falls back to http://localhost:24203 when location is missing", () => {
+ const result = resolveHttpUrl({});
+ expect(result).toBe("http://localhost:24203");
+ });
+
+ it("VITE_HTTP_URL empty string treated as unset", () => {
+ const result = resolveHttpUrl({ VITE_HTTP_URL: "" }, { protocol: "http:", hostname: "myhost" });
+ expect(result).toBe("http://myhost:24203");
+ });
+
+ it("VITE_HTTP_PORT empty string falls back to default", () => {
+ const result = resolveHttpUrl(
+ { VITE_HTTP_PORT: "" },
+ { protocol: "http:", hostname: "localhost" },
+ );
+ expect(result).toBe("http://localhost:24203");
+ });
});
diff --git a/src/app/resolve-http-url.ts b/src/app/resolve-http-url.ts
index 357d2fc..1e20eb2 100644
--- a/src/app/resolve-http-url.ts
+++ b/src/app/resolve-http-url.ts
@@ -1,28 +1,28 @@
export interface HttpUrlEnv {
- readonly VITE_HTTP_URL?: string;
- readonly VITE_HTTP_PORT?: string;
+ readonly VITE_HTTP_URL?: string;
+ readonly VITE_HTTP_PORT?: string;
}
export interface HttpUrlLocation {
- readonly protocol: string;
- readonly hostname: string;
+ readonly protocol: string;
+ readonly hostname: string;
}
const DEFAULT_PORT = "24203";
const DEFAULT_FALLBACK = "http://localhost:24203";
export function resolveHttpUrl(env: HttpUrlEnv, location?: HttpUrlLocation): string {
- if (env.VITE_HTTP_URL !== undefined && env.VITE_HTTP_URL !== "") {
- return env.VITE_HTTP_URL;
- }
+ if (env.VITE_HTTP_URL !== undefined && env.VITE_HTTP_URL !== "") {
+ return env.VITE_HTTP_URL;
+ }
- if (location === undefined) {
- return DEFAULT_FALLBACK;
- }
+ if (location === undefined) {
+ return DEFAULT_FALLBACK;
+ }
- const port =
- env.VITE_HTTP_PORT !== undefined && env.VITE_HTTP_PORT !== ""
- ? env.VITE_HTTP_PORT
- : DEFAULT_PORT;
- return `${location.protocol}//${location.hostname}:${port}`;
+ const port =
+ env.VITE_HTTP_PORT !== undefined && env.VITE_HTTP_PORT !== ""
+ ? env.VITE_HTTP_PORT
+ : DEFAULT_PORT;
+ return `${location.protocol}//${location.hostname}:${port}`;
}
diff --git a/src/app/resolve-ws-url.test.ts b/src/app/resolve-ws-url.test.ts
index 24c2f24..b5ba6c3 100644
--- a/src/app/resolve-ws-url.test.ts
+++ b/src/app/resolve-ws-url.test.ts
@@ -2,52 +2,52 @@ import { describe, expect, it } from "vitest";
import { resolveWsUrl } from "./resolve-ws-url";
describe("resolveWsUrl", () => {
- it("explicit url wins over everything", () => {
- const result = resolveWsUrl(
- { VITE_WS_URL: "wss://env.example.com:9999" },
- { protocol: "https:", hostname: "page.example.com" },
- );
- expect(result).toBe("wss://env.example.com:9999");
- });
-
- it("VITE_WS_URL wins over derivation", () => {
- const result = resolveWsUrl(
- { VITE_WS_URL: "wss://env.example.com:9999" },
- { protocol: "https:", hostname: "page.example.com" },
- );
- expect(result).toBe("wss://env.example.com:9999");
- });
-
- it("derives ws://<hostname>:24205 from http location", () => {
- const result = resolveWsUrl({}, { protocol: "http:", hostname: "100.126.75.103" });
- expect(result).toBe("ws://100.126.75.103:24205");
- });
-
- it("derives wss://<hostname>:24205 from https location", () => {
- const result = resolveWsUrl({}, { protocol: "https:", hostname: "arch-razer" });
- expect(result).toBe("wss://arch-razer:24205");
- });
-
- it("uses VITE_WS_PORT when set", () => {
- const result = resolveWsUrl(
- { VITE_WS_PORT: "3000" },
- { protocol: "http:", hostname: "localhost" },
- );
- expect(result).toBe("ws://localhost:3000");
- });
-
- it("falls back to ws://localhost:24205 when location is missing", () => {
- const result = resolveWsUrl({});
- expect(result).toBe("ws://localhost:24205");
- });
-
- it("VITE_WS_URL empty string treated as unset", () => {
- const result = resolveWsUrl({ VITE_WS_URL: "" }, { protocol: "http:", hostname: "myhost" });
- expect(result).toBe("ws://myhost:24205");
- });
-
- it("VITE_WS_PORT empty string falls back to default", () => {
- const result = resolveWsUrl({ VITE_WS_PORT: "" }, { protocol: "http:", hostname: "localhost" });
- expect(result).toBe("ws://localhost:24205");
- });
+ it("explicit url wins over everything", () => {
+ const result = resolveWsUrl(
+ { VITE_WS_URL: "wss://env.example.com:9999" },
+ { protocol: "https:", hostname: "page.example.com" },
+ );
+ expect(result).toBe("wss://env.example.com:9999");
+ });
+
+ it("VITE_WS_URL wins over derivation", () => {
+ const result = resolveWsUrl(
+ { VITE_WS_URL: "wss://env.example.com:9999" },
+ { protocol: "https:", hostname: "page.example.com" },
+ );
+ expect(result).toBe("wss://env.example.com:9999");
+ });
+
+ it("derives ws://<hostname>:24205 from http location", () => {
+ const result = resolveWsUrl({}, { protocol: "http:", hostname: "100.126.75.103" });
+ expect(result).toBe("ws://100.126.75.103:24205");
+ });
+
+ it("derives wss://<hostname>:24205 from https location", () => {
+ const result = resolveWsUrl({}, { protocol: "https:", hostname: "arch-razer" });
+ expect(result).toBe("wss://arch-razer:24205");
+ });
+
+ it("uses VITE_WS_PORT when set", () => {
+ const result = resolveWsUrl(
+ { VITE_WS_PORT: "3000" },
+ { protocol: "http:", hostname: "localhost" },
+ );
+ expect(result).toBe("ws://localhost:3000");
+ });
+
+ it("falls back to ws://localhost:24205 when location is missing", () => {
+ const result = resolveWsUrl({});
+ expect(result).toBe("ws://localhost:24205");
+ });
+
+ it("VITE_WS_URL empty string treated as unset", () => {
+ const result = resolveWsUrl({ VITE_WS_URL: "" }, { protocol: "http:", hostname: "myhost" });
+ expect(result).toBe("ws://myhost:24205");
+ });
+
+ it("VITE_WS_PORT empty string falls back to default", () => {
+ const result = resolveWsUrl({ VITE_WS_PORT: "" }, { protocol: "http:", hostname: "localhost" });
+ expect(result).toBe("ws://localhost:24205");
+ });
});
diff --git a/src/app/resolve-ws-url.ts b/src/app/resolve-ws-url.ts
index a264606..1c6e259 100644
--- a/src/app/resolve-ws-url.ts
+++ b/src/app/resolve-ws-url.ts
@@ -1,27 +1,27 @@
export interface WsUrlEnv {
- readonly VITE_WS_URL?: string;
- readonly VITE_WS_PORT?: string;
+ readonly VITE_WS_URL?: string;
+ readonly VITE_WS_PORT?: string;
}
export interface WsUrlLocation {
- readonly protocol: string;
- readonly hostname: string;
+ readonly protocol: string;
+ readonly hostname: string;
}
const DEFAULT_PORT = "24205";
const DEFAULT_FALLBACK = "ws://localhost:24205";
export function resolveWsUrl(env: WsUrlEnv, location?: WsUrlLocation): string {
- if (env.VITE_WS_URL !== undefined && env.VITE_WS_URL !== "") {
- return env.VITE_WS_URL;
- }
+ if (env.VITE_WS_URL !== undefined && env.VITE_WS_URL !== "") {
+ return env.VITE_WS_URL;
+ }
- if (location === undefined) {
- return DEFAULT_FALLBACK;
- }
+ if (location === undefined) {
+ return DEFAULT_FALLBACK;
+ }
- const wsProtocol = location.protocol === "https:" ? "wss" : "ws";
- const port =
- env.VITE_WS_PORT !== undefined && env.VITE_WS_PORT !== "" ? env.VITE_WS_PORT : DEFAULT_PORT;
- return `${wsProtocol}://${location.hostname}:${port}`;
+ const wsProtocol = location.protocol === "https:" ? "wss" : "ws";
+ const port =
+ env.VITE_WS_PORT !== undefined && env.VITE_WS_PORT !== "" ? env.VITE_WS_PORT : DEFAULT_PORT;
+ return `${wsProtocol}://${location.hostname}:${port}`;
}
diff --git a/src/app/store.svelte.ts b/src/app/store.svelte.ts
index 760c390..22b0a25 100644
--- a/src/app/store.svelte.ts
+++ b/src/app/store.svelte.ts
@@ -1,364 +1,2160 @@
import type {
- ChatDeltaMessage,
- ChatErrorMessage,
- ConversationHistoryResponse,
- ModelsResponse,
+ ChatDeltaMessage,
+ ChatErrorMessage,
+ CompactPercentResponse,
+ CompactResponse,
+ ComputerListResponse,
+ ComputerStatusResponse,
+ ConversationCompactedMessage,
+ ConversationComputerResponse,
+ ConversationHistoryResponse,
+ ConversationListResponse,
+ ConversationMetricsResponse,
+ ConversationOpenMessage,
+ ConversationStatusChangedMessage,
+ CwdResponse,
+ LspStatusResponse,
+ McpStatusResponse,
+ ModelMetadata,
+ ModelResponse,
+ ModelsResponse,
+ ReasoningEffort,
+ ReasoningEffortResponse,
+ SetCompactPercentRequest,
+ SetConversationComputerRequest,
+ SetCwdRequest,
+ SetModelRequest,
+ SetReasoningEffortRequest,
+ SetSystemPromptTemplateRequest,
+ SetTitleRequest,
+ SetVisionSettingsRequest,
+ SystemPromptTemplateResponse,
+ SystemPromptVariable,
+ SystemPromptVariablesResponse,
+ TestComputerResponse,
+ WarmRequest,
+ WarmResponse,
} from "@dispatch/transport-contract";
-import type { SurfaceServerMessage, SurfaceSpec } from "@dispatch/ui-contract";
+import type { SubscribeMessage, SurfaceServerMessage, SurfaceSpec } from "@dispatch/ui-contract";
+import type { ComputerEntry, ConversationStatus, ImageInput } from "@dispatch/wire";
+import { untrack } from "svelte";
import { createIdbChunkStore } from "../adapters/idb";
import { createLocalStore } from "../adapters/local-storage";
import type { WebSocketLike } from "../adapters/ws";
import { createSurfaceSocket, type SurfaceSocketOptions } from "../adapters/ws";
+import { normalizeChatLimit } from "../core/chunks";
import {
- applyServerMessage,
- type ProtocolState,
- initialState as protocolInitialState,
- invoke as protocolInvoke,
- subscribe as protocolSubscribe,
- unsubscribe as protocolUnsubscribe,
+ applyServerMessage,
+ getSurfaceSpec,
+ type ProtocolState,
+ initialState as protocolInitialState,
+ invoke as protocolInvoke,
+ subscribe as protocolSubscribe,
+ unsubscribe as protocolUnsubscribe,
} from "../core/protocol";
-import type { ChatStore } from "../features/chat";
+import type { ChatStore, HistorySync, MetricsSync } from "../features/chat";
import { createChatStore } from "../features/chat";
+import type {
+ ConcurrencyCooldownResult,
+ ConcurrencyDeleteResult,
+ ConcurrencyLimitResult,
+ ConcurrencyLimitsResult,
+ ConcurrencyStatusResult,
+} from "../features/concurrency";
+import {
+ normalizeConcurrencyCooldown,
+ normalizeConcurrencyLimit,
+ normalizeConcurrencyLimits,
+ normalizeConcurrencyStatus,
+} from "../features/concurrency";
import type { ConversationCache } from "../features/conversation-cache";
import { createConversationCache } from "../features/conversation-cache";
+import type {
+ HeartbeatConfig,
+ HeartbeatConfigPatch,
+ HeartbeatConfigResult,
+ HeartbeatNextRunResult,
+ HeartbeatRun,
+ HeartbeatRunsResult,
+ HeartbeatStopResult,
+} from "../features/heartbeat";
+import { normalizeHeartbeatConfig, normalizeHeartbeatRuns } from "../features/heartbeat";
import type { Tab, TabsState } from "../features/tabs";
import { createTabsStore, deriveTitle, type TabsStore } from "../features/tabs";
+import {
+ normalizeVisionSettings,
+ type VisionSettings,
+ type VisionSettingsPatch,
+} from "../features/vision";
import { resolveHttpUrl } from "./resolve-http-url";
import { resolveWsUrl } from "./resolve-ws-url";
import { randomId } from "./uuid";
const DEFAULT_MODEL = "opencode/deepseek-v4-flash";
+/** Outcome of a manual `POST /chat/warm` (the "warm now" affordance). */
+export type WarmResult =
+ | { readonly ok: true; readonly response: WarmResponse }
+ | { readonly ok: false; readonly error: string };
+
+/** Outcome of `PUT /conversations/:id/cwd`. */
+export type CwdResult =
+ | { readonly ok: true; readonly cwd: string | null }
+ | { readonly ok: false; readonly error: string };
+
+/** Outcome of `PUT /conversations/:id/computer` (set/clear the per-conversation computer). */
+export type ComputerResult =
+ | { readonly ok: true; readonly computerId: string | null }
+ | { readonly ok: false; readonly error: string };
+
+/** Outcome of `GET /computers/:alias/status` (the live connection state). */
+export type ComputerStatusResult =
+ | { readonly ok: true; readonly response: ComputerStatusResponse }
+ | { readonly ok: false; readonly error: string };
+
+/** Outcome of `POST /computers/:alias/test` (one-shot connectivity probe). */
+export type TestComputerResult =
+ | { readonly ok: true; readonly response: TestComputerResponse }
+ | { readonly ok: false; readonly error: string };
+
+/** Outcome of `GET /conversations/:id/lsp`. */
+export type LspResult =
+ | { readonly ok: true; readonly response: LspStatusResponse }
+ | { readonly ok: false; readonly error: string };
+
+/** Outcome of `GET /conversations/:id/mcp`. */
+export type McpResult =
+ | { readonly ok: true; readonly response: McpStatusResponse }
+ | { readonly ok: false; readonly error: string };
+
+/** Outcome of `PUT /conversations/:id/reasoning-effort`. */
+export type ReasoningEffortResult =
+ | { readonly ok: true; readonly reasoningEffort: ReasoningEffort }
+ | { readonly ok: false; readonly error: string };
+
+/** Outcome of `POST /conversations/:id/compact` (manual compaction). */
+export type CompactResult =
+ | { readonly ok: true; readonly response: CompactResponse }
+ | { readonly ok: false; readonly error: string };
+
+/** Outcome of `PUT /conversations/:id/compact-percent`. */
+export type CompactPercentResult =
+ | { readonly ok: true; readonly percent: number }
+ | { readonly ok: false; readonly error: string };
+
+/** Outcome of `PUT /settings/vision` (global vision-settings save). */
+export type VisionSettingsResult =
+ | { readonly ok: true; readonly settings: VisionSettings }
+ | { readonly ok: false; readonly error: string };
+
+/** Outcome of `GET /system-prompt` (global template load). */
+export type SystemPromptLoadResult =
+ | { readonly ok: true; readonly template: string }
+ | { readonly ok: false; readonly error: string };
+
+/** Outcome of `PUT /system-prompt` (global template save). */
+export type SystemPromptSaveResult = SystemPromptLoadResult;
+
+/** Outcome of `GET /system-prompt/variables` (variable catalog). */
+export type SystemPromptVariablesResult =
+ | { readonly ok: true; readonly variables: readonly SystemPromptVariable[] }
+ | { readonly ok: false; readonly error: string };
+
+/** Outcome of persisting a chat-limit setting (localStorage; FE-local). */
+export type ChatLimitResult =
+ | { readonly ok: true; readonly chatLimit: number }
+ | { readonly ok: false; readonly error: string };
+
export interface AppStore {
- readonly tabs: readonly Tab[];
- readonly activeConversationId: string | null;
- readonly activeChat: ChatStore;
- readonly models: readonly string[];
- readonly activeModel: string;
- readonly catalog: ProtocolState["catalog"];
- readonly selectedId: string | null;
- readonly selectedSpec: SurfaceSpec | null;
- readonly lastError: ProtocolState["lastError"];
- send(text: string): void;
- selectModel(model: string): void;
- newDraft(): void;
- selectTab(conversationId: string): void;
- closeTab(conversationId: string): void;
- select(surfaceId: string): void;
- invoke(surfaceId: string, actionId: string, payload?: unknown): void;
- dispose(): void;
+ readonly tabs: readonly Tab[];
+ readonly activeConversationId: string | null;
+ /** The workspace currently in view (URL slug); tabs are filtered to it. */
+ readonly activeWorkspaceId: string;
+ /**
+ * The resolved HTTP API base URL (e.g. `http://localhost:24203`). Used to
+ * resolve relative image URLs served by the backend (`/images/…`) into
+ * absolute URLs for `<img src>`.
+ */
+ readonly httpBase: string;
+ readonly activeChat: ChatStore;
+ readonly models: readonly string[];
+ /** Per-model metadata (contextWindow, etc.) from `GET /models`. */
+ readonly modelInfo: Readonly<Record<string, ModelMetadata>>;
+ readonly activeModel: string;
+ readonly catalog: ProtocolState["catalog"];
+ /** Every received surface spec, in catalog order — all auto-subscribed + expanded. */
+ readonly surfaces: readonly SurfaceSpec[];
+ readonly lastError: ProtocolState["lastError"];
+ /** The localStorage instance the store uses for persistence (tabs, chatLimit).
+ * Exposed so the shell can persist sidebar layout via the same adapter. */
+ readonly storage: Storage | undefined;
+ /** The current spec for one surface by id (discovery-by-id), or null if absent. */
+ surface(surfaceId: string): SurfaceSpec | null;
+ /**
+ * Send a user message (start a turn). Forwards any staged `images`
+ * (`ImageInput[]` — base64 data URLs / https URLs) on the `chat.send` op;
+ * the server passes them to a vision-capable model natively or transcribes
+ * them via vision handoff for a non-vision model. Omitted on the wire when
+ * none are staged. On a draft, promotes to a tab first.
+ */
+ send(text: string, images?: readonly ImageInput[]): void;
+ /**
+ * Enqueue a steering message onto the focused conversation's queue
+ * (`chat.queue` WS op). While a turn is generating, the message is delivered
+ * mid-turn at the next tool-result boundary; when idle, the server
+ * auto-starts a turn (equivalent to `send`). Safe to offer whenever the user
+ * wants to add input — the server owns the idle-vs-generating decision.
+ */
+ queueMessage(text: string): void;
+ selectModel(model: string): void;
+ newDraft(): void;
+ /** Switch the active workspace (on route change) + reset to a fresh draft in it. */
+ setActiveWorkspace(workspaceId: string): void;
+ selectTab(conversationId: string): void;
+ closeTab(conversationId: string): void;
+ renameTab(conversationId: string, title: string): void;
+ invoke(surfaceId: string, actionId: string, payload?: unknown): void;
+ /**
+ * Manually warm the focused conversation's prompt cache (`POST /chat/warm`).
+ * Returns null when no conversation is focused (a draft has nothing to warm).
+ */
+ warmNow(): Promise<WarmResult | null>;
+ /** The workspace conversation's persisted working directory, or null when unset. */
+ readonly cwd: string | null;
+ /** The conversation workspace settings target: the active tab, or the pending draft's id. */
+ readonly currentConversationId: string;
+ /**
+ * Set the workspace conversation's working directory (`PUT /conversations/:id/cwd`).
+ * Works for a draft too (its id survives promotion), so the first turn runs in it.
+ */
+ setCwd(cwd: string): Promise<CwdResult | null>;
+ /**
+ * The workspace conversation's persisted computer (an SSH `Host` alias), or
+ * null when never set / local. Seeded from the backend on focus change.
+ */
+ readonly computerId: string | null;
+ /**
+ * Persist the workspace conversation's computer (`PUT /conversations/:id/computer`).
+ * Pass null to clear → the conversation inherits the workspace default → local.
+ * Works for a draft too (its id survives promotion). Not seen by the agent — a
+ * user-facing tool-execution target only.
+ */
+ setComputer(computerId: string | null): Promise<ComputerResult | null>;
+ /**
+ * Every remote computer discovered from the user's `~/.ssh/config`
+ * (`GET /computers`), fetched on boot. Read-only — there is no Computer CRUD
+ * (the user edits their ssh config to add one). Empty until the `ssh`
+ * extension lands.
+ */
+ readonly computers: readonly ComputerEntry[];
+ /**
+ * The live connection state of a computer (`GET /computers/:alias/status`):
+ * whether Dispatch currently holds an open SSH session to it. Returns null
+ * only if no alias is given (the focused conversation is local). Polled by the
+ * `ComputerField` while a computer is selected.
+ */
+ computerStatus(alias: string): Promise<ComputerStatusResult | null>;
+ /**
+ * One-shot connectivity probe (`POST /computers/:alias/test`): Dispatch opens
+ * an SSH connection to the alias, runs a trivial command, then closes. `ok` is
+ * true on success; `error` carries the failure reason otherwise.
+ */
+ testComputer(alias: string): Promise<TestComputerResult | null>;
+ /**
+ * The workspace conversation's persisted reasoning effort, or null when never
+ * set (the server then resolves turns at the default, `"high"`).
+ */
+ readonly reasoningEffort: ReasoningEffort | null;
+ /**
+ * Persist the workspace conversation's reasoning effort
+ * (`PUT /conversations/:id/reasoning-effort`). Works for a draft too (its id
+ * survives promotion), so the first turn already runs at the chosen level.
+ * Takes effect from the NEXT turn; resolution stays server-owned.
+ */
+ setReasoningEffort(level: ReasoningEffort): Promise<ReasoningEffortResult | null>;
+ /**
+ * Manually trigger conversation compaction (`POST /conversations/:id/compact`).
+ * Summarizes old messages + retains the most recent N. Returns null when no
+ * conversation is focused (a draft has nothing to compact).
+ */
+ compactNow(keepLastN?: number): Promise<CompactResult | null>;
+ /**
+ * Stop an in-flight generation (`POST /conversations/:id/stop`). Aborts the
+ * turn without closing the conversation — partial messages are persisted, the
+ * turn seals with `reason: "aborted"`, and the conversation goes `active → idle`.
+ * Returns null when no conversation is focused.
+ */
+ stopGeneration(): void;
+ /**
+ * The workspace conversation's auto-compact percent (0-100). `0` = disabled
+ * (manual only); a positive number = auto-compact triggers when the last
+ * turn's input tokens exceed it. Seeded from the backend on focus change.
+ */
+ readonly compactPercent: number | null;
+ /**
+ * Persist the workspace conversation's auto-compact percent
+ * (`PUT /conversations/:id/compact-percent`). `0` disables; 1-100 sets the
+ * trigger percentage of the model's context window. Default (null) is 85.
+ * number enables. Works for a draft too (its id survives promotion).
+ */
+ setCompactPercent(percent: number): Promise<CompactPercentResult | null>;
+ /**
+ * The GLOBAL vision settings (`GET /settings/vision`): `imageLimit` (max
+ * native images per turn before compaction; 0 = disabled) + `compactionModel`
+ * (which vision model transcribes old images; null = auto). Shared across all
+ * conversations. Seeded on boot; `null` = not yet fetched.
+ */
+ readonly visionSettings: VisionSettings | null;
+ /**
+ * Refetch the global vision settings (`GET /settings/vision`). Called by the
+ * vision-settings view on mount; also seeded on boot.
+ */
+ refreshVisionSettings(): Promise<void>;
+ /**
+ * Save a PARTIAL vision-settings update (`PUT /settings/vision`). Either
+ * field may be omitted. Returns the merged settings on success.
+ */
+ setVisionSettings(patch: VisionSettingsPatch): Promise<VisionSettingsResult | null>;
+ /**
+ * Fetch the workspace conversation's language-server status (`GET /conversations/:id/lsp`).
+ * The backend lazily spawns servers, so this may take a moment on the first call for a cwd.
+ */
+ lspStatus(): Promise<LspResult | null>;
+ /**
+ * Fetch the workspace conversation's MCP server status (`GET /conversations/:id/mcp`).
+ * Mirrors the LSP status endpoint: returns `{cwd, servers}` with empty `servers`
+ * when no cwd is set; the backend lazily connects servers, so this may take a
+ * moment on the first call for a cwd.
+ */
+ mcpStatus(): Promise<McpResult | null>;
+ /**
+ * Load the global system prompt template (`GET /system-prompt`). The template is
+ * conversation-agnostic; it is resolved once per conversation on first turn and
+ * persisted for prompt-cache safety.
+ */
+ loadSystemPrompt(): Promise<SystemPromptLoadResult>;
+ /**
+ * Persist the global system prompt template (`PUT /system-prompt`). Changes apply
+ * to new conversations on their first turn; existing conversations keep their
+ * resolved system prompt until compaction.
+ */
+ setSystemPrompt(template: string): Promise<SystemPromptSaveResult>;
+ /**
+ * Load the static catalog of available system prompt variables (`GET /system-prompt/variables`).
+ * Used by the builder to render the variable selector buttons.
+ */
+ loadSystemPromptVariables(): Promise<SystemPromptVariablesResult>;
+ /** The persisted chat limit (max loaded chunks per conversation). */
+ readonly chatLimit: number;
+ /**
+ * A conversation's backend lifecycle status (`active`/`idle`/`closed`), or
+ * `undefined` when unknown. Drives the tab-bar generating indicator
+ * (cross-device: a tab spinning because another device's turn is running).
+ */
+ conversationStatus(conversationId: string): ConversationStatus | undefined;
+ /**
+ * Whether at least one conversation in the given workspace is currently
+ * active or queued (generating / waiting for a concurrency slot) — drives
+ * the loading-dots indicator on workspace cards. Backed by a once-derived
+ * `activeWorkspaces` set (the open-tab set × the backend lifecycle statuses)
+ * so this is an O(1) lookup, not a per-card scan of the full tab list.
+ * Reactive: the set is a `$derived`, so a Svelte template expression calling
+ * this re-runs when the tab set or status map changes.
+ */
+ workspaceHasActiveConversations(workspaceId: string): boolean;
+ /**
+ * Persist + live-apply a new chat limit: writes `dispatch.chatLimit` to
+ * localStorage and propagates to every live chat store (trim if lower,
+ * deferred via the unload gate while a reader is scrolled up; no-op if
+ * higher — page unloaded history back in via "Show earlier"). Stores created
+ * afterwards pick the new limit up at creation. Always succeeds (FE-local).
+ */
+ setChatLimit(limit: number): Promise<ChatLimitResult>;
+ /**
+ * Wire the chat-limit unload gate (composition-root injection, called once by
+ * the shell after it owns the scroll region): unloading old chunks is allowed
+ * only while the gate returns true — i.e. the reader is stuck to the bottom —
+ * so a trim never yanks content out from under someone reading history.
+ * Before attachment unloading is allowed (the initial view starts at the
+ * bottom).
+ */
+ attachUnloadGate(gate: () => boolean): void;
+ /**
+ * Load the active workspace's heartbeat config
+ * (`GET /workspaces/:id/heartbeat`). Workspace-scoped (NOT per-conversation):
+ * the backend runs an autonomous agent loop on a configured interval, writing
+ * each run into a dedicated conversation. The config covers the system/task
+ * prompts, model, reasoning effort, interval, and an enabled flag.
+ */
+ heartbeatConfig(): Promise<HeartbeatConfigResult>;
+ /**
+ * Persist a partial heartbeat config patch
+ * (`PUT /workspaces/:id/heartbeat`). The backend merges the patch onto the
+ * stored config; returns the full updated config.
+ */
+ setHeartbeatConfig(patch: HeartbeatConfigPatch): Promise<HeartbeatConfigResult>;
+ /**
+ * Load the active workspace's heartbeat run history
+ * (`GET /workspaces/:id/heartbeat/runs`). Each run references the conversation
+ * it wrote to — open one via {@link watchConversation} to see its chat live.
+ */
+ heartbeatRuns(): Promise<HeartbeatRunsResult>;
+ /**
+ * Stop a running heartbeat run (`POST /workspaces/:id/heartbeat/runs/:runId/stop`).
+ * The run's in-flight turn seals (its conversation keeps streaming until it
+ * ends); the run's status flips to `stopped` (visible on the next runs poll).
+ */
+ stopHeartbeatRun(runId: string): Promise<HeartbeatStopResult>;
+ /**
+ * Fetch the server-authoritative next-run timestamp
+ * (`GET /workspaces/:id/heartbeat/next-run`) — when the next heartbeat run
+ * will fire (ISO 8601), or null when disabled / no run scheduled. The FE shows
+ * a live countdown from this. When the endpoint is absent (404 — backend
+ * hasn't shipped CR-HB-3 yet) it returns `ok: false` so the FE falls back to
+ * an approximation from the runs + config.
+ */
+ heartbeatNextRun(): Promise<HeartbeatNextRunResult>;
+ /**
+ * Open a "watch" on a conversation for a modal viewer (the heartbeat run-chat
+ * modal): ensures a live {@link ChatStore} for the conversation, subscribing
+ * to its turn stream (`chat.subscribe`) + loading history. Reuses the open
+ * tab's store if the conversation is already a tab; otherwise creates an
+ * EPHEMERAL watch store (separate from tabs — never opens a tab). Deltas are
+ * routed to it automatically. Pair every open with {@link unwatchConversation}
+ * on close to unsubscribe + dispose the ephemeral store.
+ */
+ watchConversation(conversationId: string): ChatStore;
+ /** Dispose + unsubscribe a watch opened by {@link watchConversation}. */
+ unwatchConversation(conversationId: string): void;
+ /**
+ * Load all configured per-provider concurrency limits
+ * (`GET /concurrency/limits`). Global (not workspace-scoped). Returns an empty
+ * list when the concurrency extension isn't loaded (`{ limits: [] }`).
+ */
+ concurrencyLimits(): Promise<ConcurrencyLimitsResult>;
+ /**
+ * Fetch the configured limit for one provider
+ * (`GET /concurrency/limits/:providerId`). `404` (no limit configured) and
+ * `503` (extension not loaded) both surface as `ok: false`.
+ */
+ getConcurrencyLimit(providerId: string): Promise<ConcurrencyLimitResult>;
+ /**
+ * Set or update a provider's concurrency limit
+ * (`PUT /concurrency/limits/:providerId`, body `{ limit }`). `limit` must be a
+ * positive integer (a non-positive body is `400`). At the cap, further requests
+ * queue oldest-agent-first rather than being sent immediately.
+ */
+ setConcurrencyLimit(providerId: string, limit: number): Promise<ConcurrencyLimitResult>;
+ /**
+ * Remove a provider's concurrency limit (`DELETE /concurrency/limits/:providerId`),
+ * making it unlimited. `404` (not configured) and `503` (extension not loaded)
+ * both surface as `ok: false`.
+ */
+ deleteConcurrencyLimit(providerId: string): Promise<ConcurrencyDeleteResult>;
+ /**
+ * Fetch live concurrency status for every provider with a configured limit
+ * (`GET /concurrency/status`): in-flight slots held, agents queued, and a paused
+ * state with a `pausedUntil` epoch-ms when a 429 backoff is in effect. Each
+ * entry also carries the per-slot release `cooldownMs` + an `autoReduced` flag
+ * (true when a 429 auto-reduced the limit by 1; the FE renders a banner). Returns
+ * an empty list when the extension isn't loaded (`{ providers: [] }`).
+ */
+ concurrencyStatus(): Promise<ConcurrencyStatusResult>;
+ /**
+ * Fetch the per-slot release cooldown (ms) for one provider
+ * (`GET /concurrency/cooldown/:providerId`). `404` (no concurrency config at
+ * all) and `503` (extension not loaded) both surface as `ok: false`.
+ */
+ getConcurrencyCooldown(providerId: string): Promise<ConcurrencyCooldownResult>;
+ /**
+ * Set the per-slot release cooldown (ms) for one provider
+ * (`PUT /concurrency/cooldown/:providerId`, body `{ cooldownMs }`). `cooldownMs`
+ * must be a non-negative integer (0 = no cooldown / instant re-admission); an
+ * invalid body is `400`. Persists + applies to subsequently recycled slots.
+ */
+ setConcurrencyCooldown(
+ providerId: string,
+ cooldownMs: number,
+ ): Promise<ConcurrencyCooldownResult>;
+ /**
+ * A critical error that blocks normal operation (e.g. the cross-device tab
+ * restore fetch failed). When non-null, a full-screen modal is shown with the
+ * error details. Cleared by `clearFatalError` (the modal's dismiss button).
+ */
+ readonly fatalError: string | null;
+ /** Dismiss the fatal error (called by the error modal's X button). */
+ clearFatalError(): void;
+ dispose(): void;
}
export interface CreateAppStoreOptions {
- url?: string;
- httpUrl?: string;
- socketFactory?: (url: string) => WebSocketLike;
- fetchImpl?: typeof fetch;
- indexedDB?: IDBFactory;
- conversationId?: string;
- localStorage?: Storage;
+ url?: string;
+ httpUrl?: string;
+ socketFactory?: (url: string) => WebSocketLike;
+ fetchImpl?: typeof fetch;
+ indexedDB?: IDBFactory;
+ conversationId?: string;
+ localStorage?: Storage;
+ /** The workspace to scope to at boot (its URL slug); "default" if absent. */
+ workspaceId?: string;
+}
+
+function createHistorySync(httpBase: string, fetchImpl: typeof fetch): HistorySync {
+ return async (conversationId, sinceSeq, window) => {
+ let url = `${httpBase}/conversations/${encodeURIComponent(conversationId)}?sinceSeq=${sinceSeq}`;
+ // CR-5 windowing ([email protected]): both must be positive
+ // integers when present (the server 400s otherwise; callers guarantee it).
+ if (window?.limit !== undefined) url += `&limit=${window.limit}`;
+ if (window?.beforeSeq !== undefined) url += `&beforeSeq=${window.beforeSeq}`;
+ const res = await fetchImpl(url);
+ if (!res.ok) {
+ throw new Error(`History sync failed: ${res.status}`);
+ }
+ return (await res.json()) as ConversationHistoryResponse;
+ };
}
-function createHistorySync(
- httpBase: string,
- fetchImpl: typeof fetch,
-): (conversationId: string, sinceSeq: number) => Promise<ConversationHistoryResponse> {
- return async (conversationId: string, sinceSeq: number) => {
- const url = `${httpBase}/conversations/${encodeURIComponent(conversationId)}?sinceSeq=${sinceSeq}`;
- const res = await fetchImpl(url);
- if (!res.ok) {
- throw new Error(`History sync failed: ${res.status}`);
- }
- return (await res.json()) as ConversationHistoryResponse;
- };
+function createMetricsSync(httpBase: string, fetchImpl: typeof fetch): MetricsSync {
+ return async (conversationId: string) => {
+ const url = `${httpBase}/conversations/${encodeURIComponent(conversationId)}/metrics`;
+ const res = await fetchImpl(url);
+ if (!res.ok) return { turns: [] };
+ return (await res.json()) as ConversationMetricsResponse;
+ };
}
export function createAppStore(opts?: CreateAppStoreOptions): AppStore {
- let protocol = $state<ProtocolState>(protocolInitialState());
- let selectedId = $state<string | null>(null);
- let models = $state<readonly string[]>([]);
- let activeModel = $state(DEFAULT_MODEL);
-
- const wsLocation = typeof location !== "undefined" ? location : undefined;
- const wsUrl =
- opts?.url ??
- resolveWsUrl(
- { VITE_WS_URL: import.meta.env.VITE_WS_URL, VITE_WS_PORT: import.meta.env.VITE_WS_PORT },
- wsLocation,
- );
-
- const httpLocation = typeof location !== "undefined" ? location : undefined;
- const httpBase =
- opts?.httpUrl ??
- resolveHttpUrl(
- {
- VITE_HTTP_URL: import.meta.env.VITE_HTTP_URL,
- VITE_HTTP_PORT: import.meta.env.VITE_HTTP_PORT,
- },
- httpLocation,
- );
-
- const fetchImpl = opts?.fetchImpl ?? globalThis.fetch.bind(globalThis);
- const indexedDBFactory = opts?.indexedDB ?? globalThis.indexedDB;
- const localStorageOpt = opts?.localStorage ?? globalThis.localStorage;
-
- const storageAdapter = createLocalStore<TabsState>("dispatch.tabs", {
- storage: localStorageOpt,
- });
- const tabsStore: TabsStore = createTabsStore(storageAdapter);
-
- const cache: ConversationCache = createConversationCache(
- createIdbChunkStore({ indexedDB: indexedDBFactory }),
- );
-
- const historySync = createHistorySync(httpBase, fetchImpl);
-
- const chatStores = new Map<string, ChatStore>();
-
- function createChatFor(conversationId: string, model: string): ChatStore {
- return createChatStore({
- conversationId,
- model,
- transport: {
- send(msg) {
- socket?.send(msg);
- },
- },
- historySync,
- cache,
- });
- }
-
- const initialDraftId = randomId();
- let draftStore: ChatStore = createChatFor(initialDraftId, activeModel);
- let draftConversationId: string = initialDraftId;
-
- let activeChat = $state<ChatStore>(draftStore as ChatStore);
-
- function getActiveChat(): ChatStore {
- const activeId = tabsStore.activeConversationId;
- if (activeId === null) {
- return draftStore;
- }
- return chatStores.get(activeId) ?? draftStore;
- }
-
- function refreshActiveChat(): void {
- activeChat = getActiveChat();
- }
-
- function handleChatMessage(msg: ChatDeltaMessage | ChatErrorMessage): void {
- let targetId: string | undefined;
- if (msg.type === "chat.delta") {
- targetId = msg.event.conversationId;
- } else {
- targetId = msg.conversationId;
- }
-
- if (targetId !== undefined) {
- const store = chatStores.get(targetId);
- if (store !== undefined) {
- store.handleDelta(msg);
- return;
- }
- }
-
- // fallback: try all stores (chat.error without conversationId)
- for (const store of chatStores.values()) {
- store.handleDelta(msg);
- }
- }
-
- function handleServerMessage(msg: SurfaceServerMessage): void {
- protocol = applyServerMessage(protocol, msg);
- }
-
- let socket: ReturnType<typeof createSurfaceSocket> | null = null;
-
- const socketOpts: SurfaceSocketOptions = {
- url: wsUrl,
- onMessage: handleServerMessage,
- onChat: handleChatMessage,
- onReopen() {
- if (selectedId !== null) {
- const result = protocolSubscribe(protocol, selectedId);
- protocol = result.state;
- for (const msg of result.outgoing) {
- socket?.send(msg);
- }
- }
- },
- };
- if (opts?.socketFactory !== undefined) {
- socketOpts.socketFactory = opts.socketFactory;
- }
- socket = createSurfaceSocket(socketOpts);
-
- // Fetch model catalog
- void fetchImpl(`${httpBase}/models`)
- .then((res) => {
- if (!res.ok) return;
- return res.json() as Promise<ModelsResponse>;
- })
- .then((data) => {
- if (data === undefined) return;
- models = data.models;
- if (data.models.length > 0 && !data.models.includes(activeModel)) {
- const first = data.models[0];
- if (first !== undefined) {
- activeModel = first;
- }
- }
- })
- .catch(() => {
- // Model fetch failure is non-fatal; use defaults.
- });
-
- // Restore persisted tabs
- const persistedState = storageAdapter.load();
- if (persistedState !== null && persistedState.tabs.length > 0) {
- for (const tab of persistedState.tabs) {
- const store = createChatFor(tab.conversationId, tab.model);
- chatStores.set(tab.conversationId, store);
- void store.load();
- }
- if (persistedState.activeConversationId !== null) {
- const activeTab = persistedState.tabs.find(
- (t) => t.conversationId === persistedState.activeConversationId,
- );
- if (activeTab !== undefined) {
- activeModel = activeTab.model;
- }
- }
- }
-
- refreshActiveChat();
-
- return {
- get tabs(): readonly Tab[] {
- return tabsStore.tabs;
- },
- get activeConversationId(): string | null {
- return tabsStore.activeConversationId;
- },
- get activeChat(): ChatStore {
- return activeChat;
- },
- get models(): readonly string[] {
- return models;
- },
- get activeModel(): string {
- return activeModel;
- },
- get catalog() {
- return protocol.catalog;
- },
- get selectedId() {
- return selectedId;
- },
- get selectedSpec() {
- if (selectedId === null) return null;
- return protocol.subscriptions.get(selectedId) ?? null;
- },
- get lastError() {
- return protocol.lastError;
- },
-
- send(text: string): void {
- if (tabsStore.activeConversationId === null) {
- // Draft: promote to tab on first send
- const conversationId = draftConversationId;
- const model = activeModel;
- tabsStore.createTab({
- conversationId,
- model,
- title: deriveTitle(text),
- });
- chatStores.set(conversationId, draftStore);
- void draftStore.load();
-
- // Prepare next draft
- const nextDraftId = randomId();
- draftStore = createChatFor(nextDraftId, activeModel);
- draftConversationId = nextDraftId;
-
- refreshActiveChat();
- // Now send on the promoted store
- chatStores.get(conversationId)?.send(text);
- } else {
- activeChat.send(text);
- }
- },
-
- selectModel(model: string): void {
- activeModel = model;
- const activeId = tabsStore.activeConversationId;
- if (activeId !== null) {
- tabsStore.setModel(activeId, model);
- chatStores.get(activeId)?.setModel(model);
- } else {
- draftStore.setModel(model);
- }
- },
-
- newDraft(): void {
- tabsStore.newDraft();
- const nextDraftId = randomId();
- draftStore = createChatFor(nextDraftId, activeModel);
- draftConversationId = nextDraftId;
- refreshActiveChat();
- },
-
- selectTab(conversationId: string): void {
- tabsStore.selectTab(conversationId);
- const tab = tabsStore.tabs.find((t) => t.conversationId === conversationId);
- if (tab !== undefined) {
- activeModel = tab.model;
- }
- refreshActiveChat();
- },
-
- closeTab(conversationId: string): void {
- tabsStore.closeTab(conversationId);
- const store = chatStores.get(conversationId);
- if (store !== undefined) {
- store.dispose();
- chatStores.delete(conversationId);
- }
- void cache.delete(conversationId);
- refreshActiveChat();
- },
-
- select(surfaceId: string): void {
- if (selectedId !== null && selectedId !== surfaceId) {
- const unsub = protocolUnsubscribe(protocol, selectedId);
- protocol = unsub.state;
- for (const msg of unsub.outgoing) {
- socket?.send(msg);
- }
- }
- selectedId = surfaceId;
- const sub = protocolSubscribe(protocol, surfaceId);
- protocol = sub.state;
- for (const msg of sub.outgoing) {
- socket?.send(msg);
- }
- },
- invoke(surfaceId: string, actionId: string, payload?: unknown): void {
- const result = protocolInvoke(protocol, surfaceId, actionId, payload);
- protocol = result.state;
- for (const msg of result.outgoing) {
- socket?.send(msg);
- }
- },
- dispose(): void {
- for (const store of chatStores.values()) {
- store.dispose();
- }
- chatStores.clear();
- draftStore.dispose();
- socket?.close();
- socket = null;
- },
- };
+ let protocol = $state<ProtocolState>(protocolInitialState());
+ let models = $state<readonly string[]>([]);
+ let modelInfo = $state<Readonly<Record<string, ModelMetadata>>>({});
+ // Discovered SSH computers (`GET /computers`). Global (like `models`); empty
+ // until the `ssh` extension lands. Read-only — no CRUD (the user edits their
+ // `~/.ssh/config`).
+ let computers = $state<readonly ComputerEntry[]>([]);
+ let activeModel = $state(DEFAULT_MODEL);
+ let fatalError = $state<string | null>(null);
+
+ // The workspace currently in view (its URL slug); "default" until routing
+ // sets it. Tabs are filtered to this workspace; a new conversation is stamped
+ // with it on `chat.send`.
+ let activeWorkspaceId = $state<string>(opts?.workspaceId ?? "default");
+
+ const wsLocation = typeof location !== "undefined" ? location : undefined;
+ const wsUrl =
+ opts?.url ??
+ resolveWsUrl(
+ { VITE_WS_URL: import.meta.env.VITE_WS_URL, VITE_WS_PORT: import.meta.env.VITE_WS_PORT },
+ wsLocation,
+ );
+
+ const httpLocation = typeof location !== "undefined" ? location : undefined;
+ const httpBase =
+ opts?.httpUrl ??
+ resolveHttpUrl(
+ {
+ VITE_HTTP_URL: import.meta.env.VITE_HTTP_URL,
+ VITE_HTTP_PORT: import.meta.env.VITE_HTTP_PORT,
+ },
+ httpLocation,
+ );
+
+ const fetchImpl = opts?.fetchImpl ?? globalThis.fetch.bind(globalThis);
+ const indexedDBFactory = opts?.indexedDB ?? globalThis.indexedDB;
+ const localStorageOpt = opts?.localStorage ?? globalThis.localStorage;
+
+ const storageAdapter = createLocalStore<TabsState>("dispatch.tabs", {
+ storage: localStorageOpt,
+ });
+ const tabsStore: TabsStore = createTabsStore(storageAdapter);
+
+ // The chat limit (max loaded chunks per conversation) — a persisted local
+ // setting surfaced in the sidebar's Settings view. Reactive so the field +
+ // any live-apply re-trim update together. The default is written back on
+ // first run so the knob is discoverable in localStorage too.
+ const chatLimitStore = createLocalStore<number>("dispatch.chatLimit", {
+ storage: localStorageOpt,
+ });
+ const storedChatLimit = chatLimitStore.load();
+ const normalizedChatLimit = normalizeChatLimit(storedChatLimit);
+ let chatLimit = $state(normalizedChatLimit);
+ if (storedChatLimit === null) {
+ chatLimitStore.save(normalizedChatLimit);
+ }
+
+ // Unload gate — attached by the shell once it owns the scroll region (see
+ // `AppStore.attachUnloadGate`). Until then, unloading is allowed.
+ let unloadGate: (() => boolean) | null = null;
+
+ const cache: ConversationCache = createConversationCache(
+ createIdbChunkStore({ indexedDB: indexedDBFactory }),
+ );
+
+ const historySync = createHistorySync(httpBase, fetchImpl);
+ const metricsSync = createMetricsSync(httpBase, fetchImpl);
+
+ const chatStores = new Map<string, ChatStore>();
+
+ // Ephemeral chat stores for MODAL viewers (the heartbeat run-chat modal): a
+ // watch on a conversation's live turn stream WITHOUT opening a tab. Separate
+ // from `chatStores` (tabs) so closing a modal never disturbs the tab strip,
+ // and a tab's conversation reuses its own store (see `watchConversation`).
+ // Deltas are routed here in addition to `chatStores`.
+ const watchStores = new Map<string, ChatStore>();
+
+ function createChatFor(conversationId: string, model: string, workspaceId: string): ChatStore {
+ return createChatStore({
+ conversationId,
+ model,
+ workspaceId,
+ transport: {
+ send(msg) {
+ socket?.send(msg);
+ },
+ },
+ historySync,
+ metricsSync,
+ cache,
+ // Read from the persisted store (kept in sync with the reactive `chatLimit`
+ // by `setChatLimit` + boot) so this snapshot doesn't reference the `$state`
+ // — each store captures its limit at creation; live updates go through
+ // `setChatLimit`.
+ chatLimit: normalizeChatLimit(chatLimitStore.load()),
+ canUnload: () => (unloadGate === null ? true : unloadGate()),
+ onError: (context, err) => {
+ reportError(`${context} (conversation: ${conversationId})`, err);
+ },
+ });
+ }
+
+ const initialDraftId = randomId();
+ // Read `activeWorkspaceId` with untrack to suppress Svelte's
+ // `state_referenced_locally` warning — this intentionally captures the
+ // INITIAL workspace for the boot draft. When the workspace changes later,
+ // `setActiveWorkspace` creates a fresh draft store with the new id.
+ let draftStore: ChatStore = createChatFor(
+ initialDraftId,
+ DEFAULT_MODEL,
+ untrack(() => activeWorkspaceId),
+ );
+ let draftConversationId: string = initialDraftId;
+
+ let activeChat = $state<ChatStore>(draftStore as ChatStore);
+
+ // The active conversation's persisted working directory (per-tab). Seeded from
+ // the backend on focus change; null for a draft / when unset.
+ let cwd = $state<string | null>(null);
+
+ /** Refetch the workspace conversation's cwd into reactive state (works for a draft too). */
+ async function refreshCwd(): Promise<void> {
+ const id = workspaceConversationId();
+ try {
+ const res = await fetchImpl(`${httpBase}/conversations/${encodeURIComponent(id)}/cwd`);
+ if (!res.ok) return;
+ const data = (await res.json()) as CwdResponse;
+ // Guard a slow response losing a race with a conversation switch.
+ if (workspaceConversationId() === id) cwd = data.cwd ?? null;
+ } catch (err) {
+ reportError("Failed to load working directory", err);
+ }
+ }
+
+ // The active conversation's persisted computer (SSH Host alias). Seeded on
+ // focus change; null = local / never set (inherits the workspace default).
+ let computerId = $state<string | null>(null);
+
+ /**
+ * Refetch the workspace conversation's persisted computer into reactive state
+ * (works for a draft too). A draft's id 404s until promoted; `res.ok` is false
+ * so it is a silent no-op (mirrors `refreshCwd` for a draft).
+ */
+ async function refreshComputer(): Promise<void> {
+ const id = workspaceConversationId();
+ // Clear immediately so a switch never shows the PREVIOUS conversation's
+ // computer while the fetch is in flight (null renders as "Local").
+ computerId = null;
+ try {
+ const res = await fetchImpl(`${httpBase}/conversations/${encodeURIComponent(id)}/computer`);
+ if (!res.ok) return;
+ const data = (await res.json()) as ConversationComputerResponse;
+ // Guard a slow response losing a race with a conversation switch.
+ if (workspaceConversationId() === id) computerId = data.computerId ?? null;
+ } catch (err) {
+ reportError("Failed to load computer", err);
+ }
+ }
+
+ /** Refetch the workspace conversation's persisted model (works for a draft too). */
+ async function refreshModel(): Promise<void> {
+ const id = workspaceConversationId();
+ try {
+ const res = await fetchImpl(`${httpBase}/conversations/${encodeURIComponent(id)}/model`);
+ if (!res.ok) return;
+ const data = (await res.json()) as ModelResponse;
+ if (workspaceConversationId() !== id) return;
+ if (typeof data.model === "string" && data.model.length > 0) {
+ activeModel = data.model;
+ const activeId = tabsStore.activeConversationId;
+ if (activeId !== null) {
+ tabsStore.setModel(activeId, data.model);
+ chatStores.get(activeId)?.setModel(data.model);
+ } else {
+ draftStore.setModel(data.model);
+ }
+ }
+ } catch (err) {
+ reportError("Failed to load model", err);
+ }
+ }
+
+ // The workspace conversation's persisted reasoning effort. Seeded from the
+ // backend on focus change; null = never set (the server default applies).
+ let reasoningEffort = $state<ReasoningEffort | null>(null);
+
+ /** Refetch the workspace conversation's reasoning effort (works for a draft too). */
+ async function refreshReasoningEffort(): Promise<void> {
+ const id = workspaceConversationId();
+ // Clear immediately so a switch never shows the PREVIOUS conversation's level
+ // while the fetch is in flight (null renders as the server default).
+ reasoningEffort = null;
+ try {
+ const res = await fetchImpl(
+ `${httpBase}/conversations/${encodeURIComponent(id)}/reasoning-effort`,
+ );
+ if (!res.ok) return;
+ const data = (await res.json()) as ReasoningEffortResponse;
+ // Guard a slow response losing a race with a conversation switch.
+ if (workspaceConversationId() === id) reasoningEffort = data.reasoningEffort ?? null;
+ } catch (err) {
+ reportError("Failed to load reasoning effort", err);
+ }
+ }
+
+ // The workspace conversation's auto-compact percent. Seeded from the
+ // backend on focus change; null = not yet fetched. 0 = disabled.
+ let compactPercent = $state<number | null>(null);
+
+ // The GLOBAL vision settings (shared across all conversations). Seeded on
+ // boot; null = not yet fetched.
+ let visionSettings = $state<VisionSettings | null>(null);
+
+ /** Refetch the global vision settings (`GET /settings/vision`). */
+ async function refreshVisionSettings(): Promise<void> {
+ try {
+ const res = await fetchImpl(`${httpBase}/settings/vision`);
+ if (!res.ok) return;
+ const data = normalizeVisionSettings(await res.json());
+ visionSettings = data;
+ } catch (err) {
+ reportError("Failed to load vision settings", err);
+ }
+ }
+
+ /** Refetch the workspace conversation's compact percent (works for a draft too). */
+ async function refreshCompactPercent(): Promise<void> {
+ const id = workspaceConversationId();
+ compactPercent = null;
+ try {
+ const res = await fetchImpl(
+ `${httpBase}/conversations/${encodeURIComponent(id)}/compact-percent`,
+ );
+ if (!res.ok) return;
+ const data = (await res.json()) as CompactPercentResponse;
+ if (workspaceConversationId() === id) compactPercent = data.threshold;
+ } catch (err) {
+ reportError("Failed to load compact percent", err);
+ }
+ }
+
+ function getActiveChat(): ChatStore {
+ const activeId = tabsStore.activeConversationId;
+ if (activeId === null) {
+ return draftStore;
+ }
+ return chatStores.get(activeId) ?? draftStore;
+ }
+
+ function refreshActiveChat(): void {
+ activeChat = getActiveChat();
+ }
+
+ function handleChatMessage(msg: ChatDeltaMessage | ChatErrorMessage): void {
+ let targetId: string | undefined;
+ if (msg.type === "chat.delta") {
+ targetId = msg.event.conversationId;
+ } else {
+ targetId = msg.conversationId;
+ }
+
+ if (targetId !== undefined) {
+ const store = chatStores.get(targetId) ?? watchStores.get(targetId);
+ if (store !== undefined) {
+ store.handleDelta(msg);
+ return;
+ }
+ }
+
+ // fallback: try all stores (chat.error without conversationId)
+ for (const store of chatStores.values()) {
+ store.handleDelta(msg);
+ }
+ for (const store of watchStores.values()) {
+ store.handleDelta(msg);
+ }
+ }
+
+ /**
+ * Start watching a conversation's live turn events (`chat.subscribe`). Sent for
+ * EVERY open conversation — not just the active one — so a backgrounded tab keeps
+ * streaming a running turn, and a reloaded/second client re-attaches to an
+ * in-flight turn (the server replays it from `turn-start`). Idempotent server-side;
+ * the socket queues it until the connection is open. NOT needed right after
+ * `chat.send` (that auto-subscribes the sending connection).
+ */
+ function subscribeChat(conversationId: string): void {
+ socket?.send({ type: "chat.subscribe", conversationId });
+ }
+
+ /** Stop watching a conversation's turn events (`chat.unsubscribe`). Never stops the turn. */
+ function unsubscribeChat(conversationId: string): void {
+ socket?.send({ type: "chat.unsubscribe", conversationId });
+ }
+
+ /**
+ * Open a "watch" on a conversation for a modal viewer (the heartbeat run-chat
+ * modal). Returns a live {@link ChatStore} for the conversation's turn stream.
+ * If the conversation is already an open TAB, reuses its store (it is already
+ * subscribed + streaming); otherwise creates an EPHEMERAL watch store in
+ * `watchStores` (separate from tabs — never opens a tab), subscribes to its
+ * live turn stream, and loads history. Deltas route to it via `handleChatMessage`.
+ * Pair with {@link unwatchConversation} on close.
+ */
+ function watchConversation(conversationId: string): ChatStore {
+ // An open tab already has a live store + subscription — reuse it.
+ const tabStore = chatStores.get(conversationId);
+ if (tabStore !== undefined) return tabStore;
+ const existing = watchStores.get(conversationId);
+ if (existing !== undefined) return existing;
+ const store = createChatFor(conversationId, activeModel, activeWorkspaceId);
+ watchStores.set(conversationId, store);
+ void store.load();
+ subscribeChat(conversationId);
+ return store;
+ }
+
+ /**
+ * Dispose + unsubscribe a watch opened by {@link watchConversation}. A no-op if
+ * the conversation was (or became) an open TAB — the tab owns its store +
+ * subscription, so nothing is torn down (closing the modal must not disturb the
+ * tab strip). Only the ephemeral watch store is disposed + unsubscribed.
+ */
+ function unwatchConversation(conversationId: string): void {
+ // A tab reuses its own store — leave it (and its subscription) intact.
+ if (chatStores.has(conversationId)) return;
+ const store = watchStores.get(conversationId);
+ if (store === undefined) return;
+ store.dispose();
+ watchStores.delete(conversationId);
+ unsubscribeChat(conversationId);
+ }
+
+ /**
+ * Tell the backend the user EXPLICITLY closed this conversation's tab
+ * (`POST /conversations/:id/close`): aborts any in-flight turn (it seals with
+ * `reason: "aborted"`) and stops + DISABLES its cache-warming (persisted OFF).
+ * Distinct from a disconnect / `chat.unsubscribe`, which deliberately leave
+ * both running. Fire-and-forget: a failure is non-fatal (worst case the
+ * warming keeps running until a later close/toggle), and the endpoint is
+ * idempotent server-side.
+ */
+ function closeConversation(conversationId: string): void {
+ void fetchImpl(`${httpBase}/conversations/${encodeURIComponent(conversationId)}/close`, {
+ method: "POST",
+ }).catch((err) => {
+ reportError("Failed to close conversation", err);
+ });
+ }
+
+ /** The conversation the surfaces should scope to (undefined for a draft). */
+ function focusedConversationId(): string | undefined {
+ return tabsStore.activeConversationId ?? undefined;
+ }
+
+ /**
+ * The conversation id workspace settings (cwd / LSP) target: the active tab, or
+ * the pending draft's id when in draft mode. Unlike `focusedConversationId`, this
+ * is NEVER undefined — the draft has a stable client-minted id that survives
+ * promotion (first send), so a cwd set on a draft carries into the real turn.
+ */
+ function workspaceConversationId(): string {
+ return tabsStore.activeConversationId ?? draftConversationId;
+ }
+
+ function handleServerMessage(msg: SurfaceServerMessage): void {
+ protocol = applyServerMessage(protocol, msg);
+ // Surfaces are auto-expanded: whenever the catalog changes, subscribe to
+ // every entry (and drop subscriptions for entries that vanished).
+ if (msg.type === "catalog") {
+ syncSubscriptions();
+ }
+ }
+
+ /**
+ * Subscribe to every catalog entry, scoped to the focused conversation, and
+ * unsubscribe stragglers. Re-run on conversation switch: a conversation-scoped
+ * surface (e.g. cache-warming) re-scopes to the new id (`protocolSubscribe`
+ * emits unsubscribe-old + subscribe-new); a global surface ignores the id.
+ */
+ function syncSubscriptions(): void {
+ const cid = focusedConversationId();
+ for (const entry of protocol.catalog) {
+ // A GLOBAL surface ignores conversation scope — subscribe it WITHOUT an id
+ // so a conversation switch doesn't churn a redundant unsubscribe+subscribe
+ // round trip ([email protected] catalog `scope`; ABSENT = assume
+ // conversation-scoped, the conservative pre-0.2.0 policy).
+ const scoped = entry.scope === "global" ? undefined : cid;
+ const result = protocolSubscribe(protocol, entry.id, scoped);
+ protocol = result.state;
+ for (const msg of result.outgoing) {
+ socket?.send(msg);
+ }
+ }
+ const catalogIds = new Set(protocol.catalog.map((e) => e.id));
+ for (const id of [...protocol.subscriptions.keys()]) {
+ if (!catalogIds.has(id)) {
+ const result = protocolUnsubscribe(protocol, id);
+ protocol = result.state;
+ for (const msg of result.outgoing) {
+ socket?.send(msg);
+ }
+ }
+ }
+ }
+
+ let socket: ReturnType<typeof createSurfaceSocket> | null = null;
+
+ /**
+ * Open a conversation tab — used by the `conversation.open` WS broadcast
+ * (CLI `--open` flag) and by `conversation.statusChanged` when a new active
+ * conversation is discovered. If the conversation is already open, this is a
+ * no-op; otherwise create a chat store, load its history, subscribe to its live
+ * turns, and add the tab WITHOUT switching the active conversation (the user
+ * stays on their current tab; the new tab appears in the strip). The tab is
+ * stamped with the conversation's actual `workspaceId`, NOT the viewer's
+ * currently active workspace.
+ */
+ function openConversation(conversationId: string, workspaceId: string): void {
+ if (chatStores.has(conversationId)) return;
+ const store = createChatFor(conversationId, activeModel, workspaceId);
+ chatStores.set(conversationId, store);
+ void store.load();
+ subscribeChat(conversationId);
+ tabsStore.openTab({
+ conversationId,
+ model: activeModel,
+ title: "Conversation",
+ workspaceId,
+ });
+ }
+
+ /**
+ * Remove a tab + its chat store locally (NO `POST /close` — used when the
+ * backend already marked the conversation `closed` via `conversation.statusChanged`).
+ */
+ function removeTabLocally(conversationId: string): void {
+ unsubscribeChat(conversationId);
+ const store = chatStores.get(conversationId);
+ if (store !== undefined) {
+ store.dispose();
+ chatStores.delete(conversationId);
+ }
+ void cache.delete(conversationId);
+ tabsStore.closeTab(conversationId);
+ conversationStatuses.delete(conversationId);
+ refreshActiveChat();
+ syncSubscriptions();
+ void refreshCwd();
+ void refreshComputer();
+ void refreshReasoningEffort();
+ void refreshCompactPercent();
+ }
+
+ /**
+ * Surface a swallowed error to the user via the full-screen error modal
+ * (`fatalError` → `ErrorModal`). Logs to `console.error` too so the stack is
+ * in devtools. Called from catch blocks that previously swallowed errors silently.
+ */
+ function reportError(context: string, err: unknown): void {
+ console.error(`[reportError] ${context}`, err);
+ const detail =
+ err instanceof Error
+ ? `${err.name}: ${err.message}\n\n${err.stack ?? "(no stack trace available)"}`
+ : String(err);
+ fatalError = `${context}\n\n${detail}`;
+ }
+
+ // Conversation lifecycle status (backend-owned, pushed via WS +
+ // fetched on connect). Keyed by conversationId.
+ let conversationStatuses = $state<Map<string, ConversationStatus>>(new Map());
+
+ // The set of workspaces with ≥1 active/queued conversation, derived ONCE
+ // (not recomputed per card). Every active/queued conversation has an open
+ // tab stamped with its workspace, so the tabs are the conversation→workspace
+ // map; cross-reference with the lifecycle statuses. `$derived` recomputes
+ // lazily when the tab set or status map changes, so each
+ // `workspaceHasActiveConversations` call is an O(1) lookup instead of a scan
+ // of the full tab list per card.
+ const activeWorkspaces = $derived.by(() => {
+ const out = new Set<string>();
+ for (const tab of tabsStore.tabs) {
+ const status = conversationStatuses.get(tab.conversationId);
+ if (status === "active" || status === "queued") out.add(tab.workspaceId);
+ }
+ return out;
+ });
+
+ /**
+ * Fetch `GET /conversations?status=active,idle` on connect to restore the
+ * tab bar across devices. Merges: opens tabs for conversations not already
+ * open, removes tabs for conversations that are no longer active/idle
+ * (closed on another device), and subscribes to `active` conversations'
+ * live streams.
+ */
+ async function fetchOpenConversations(): Promise<void> {
+ try {
+ const res = await fetchImpl(`${httpBase}/conversations?status=active,idle`);
+ if (!res.ok) return;
+ const data = (await res.json()) as ConversationListResponse;
+
+ // Update the status map from the authoritative backend list.
+ const newStatuses = new Map<string, ConversationStatus>();
+ for (const conv of data.conversations) {
+ newStatuses.set(conv.id, conv.status);
+ }
+ conversationStatuses = newStatuses;
+
+ // Open tabs for conversations not already open.
+ const existingIds = new Set(chatStores.keys());
+ for (const conv of data.conversations) {
+ if (!existingIds.has(conv.id)) {
+ const store = createChatFor(conv.id, activeModel, conv.workspaceId);
+ chatStores.set(conv.id, store);
+ void store.load();
+ subscribeChat(conv.id);
+ tabsStore.openTab({
+ conversationId: conv.id,
+ model: activeModel,
+ title: conv.title,
+ workspaceId: conv.workspaceId,
+ });
+ } else {
+ // Already open — update the title from the backend if it differs.
+ tabsStore.setTitle(conv.id, conv.title);
+ }
+ }
+
+ // Remove tabs for conversations no longer active/idle (closed elsewhere).
+ const backendIds = new Set(data.conversations.map((c) => c.id));
+ for (const tab of tabsStore.tabs) {
+ if (!backendIds.has(tab.conversationId)) {
+ removeTabLocally(tab.conversationId);
+ }
+ }
+ } catch (err) {
+ reportError(
+ `Failed to load conversations from the backend.\n\nURL: ${httpBase}/conversations?status=active,idle`,
+ err,
+ );
+ }
+ }
+
+ const socketOpts: SurfaceSocketOptions = {
+ url: wsUrl,
+ onMessage: handleServerMessage,
+ onChat: handleChatMessage,
+ onConversationOpen(msg: ConversationOpenMessage): void {
+ openConversation(msg.conversationId, msg.workspaceId);
+ },
+ onConversationStatusChanged(msg: ConversationStatusChangedMessage): void {
+ const { conversationId, status, workspaceId } = msg;
+ if (status === "closed") {
+ // Closed on another device (or the backend) — remove the tab locally.
+ if (chatStores.has(conversationId)) {
+ removeTabLocally(conversationId);
+ }
+ return;
+ }
+ // active / queued / idle — update the status map (drives the tab spinner).
+ // `queued` = the turn is in flight but waiting for a concurrency slot
+ // (broadcast-only, never persisted — CR-13); the tab shows a ring.
+ conversationStatuses = new Map(conversationStatuses).set(conversationId, status);
+ // If this is a new active OR queued conversation we don't have a tab for,
+ // open one — so a cross-device turn (incl. one waiting in the concurrency
+ // queue) is visible. `idle` never opens a tab.
+ if ((status === "active" || status === "queued") && !chatStores.has(conversationId)) {
+ openConversation(conversationId, workspaceId);
+ }
+ },
+ onConversationCompacted(msg: ConversationCompactedMessage): void {
+ // Compaction keeps the conversation ID — the old full history is forked
+ // to an archive (newConversationId). Just reload the same conversation's
+ // history (dispose stale store + cache + re-fetch).
+ const cid = msg.conversationId;
+ const wasActive = tabsStore.activeConversationId === cid;
+ const store = chatStores.get(cid);
+ if (store !== undefined) {
+ store.dispose();
+ }
+ void cache.delete(cid);
+ const fresh = createChatFor(cid, activeModel, activeWorkspaceId);
+ chatStores.set(cid, fresh);
+ void fresh.load();
+ if (wasActive) {
+ refreshActiveChat();
+ }
+ },
+ onReopen() {
+ // The server forgot our subscriptions on reconnect; re-send each with the
+ // conversation it was subscribed under (protocolSubscribe would no-op since
+ // they're still in our local map, so emit the wire messages directly).
+ for (const [surfaceId, sub] of protocol.subscriptions) {
+ const msg: SubscribeMessage =
+ sub.conversationId === undefined
+ ? { type: "subscribe", surfaceId }
+ : { type: "subscribe", surfaceId, conversationId: sub.conversationId };
+ socket?.send(msg);
+ }
+ // Re-attach to every open conversation's turn stream. A turn that kept
+ // running while we were disconnected resumes streaming (server replays it
+ // from `turn-start`); one that sealed while we were gone is committed from
+ // history by `resync()` (which also clears a now-stale "generating").
+ for (const tab of tabsStore.tabs) {
+ subscribeChat(tab.conversationId);
+ chatStores.get(tab.conversationId)?.resync();
+ }
+ // Re-attach to every MODAL watch too (a run-chat modal open across a
+ // reconnect keeps streaming). Watch stores are separate from tabs.
+ for (const [watchId, watchStore] of watchStores) {
+ subscribeChat(watchId);
+ watchStore.resync();
+ }
+ },
+ };
+ if (opts?.socketFactory !== undefined) {
+ socketOpts.socketFactory = opts.socketFactory;
+ }
+ socket = createSurfaceSocket(socketOpts);
+
+ // Fetch model catalog
+ void fetchImpl(`${httpBase}/models`)
+ .then((res) => {
+ if (!res.ok) return;
+ return res.json() as Promise<ModelsResponse>;
+ })
+ .then((data) => {
+ if (data === undefined) return;
+ models = data.models;
+ modelInfo = data.modelInfo ?? {};
+ if (data.models.length > 0 && !data.models.includes(activeModel)) {
+ const first = data.models[0];
+ if (first !== undefined) {
+ activeModel = first;
+ draftStore.setModel(first);
+ }
+ }
+ })
+ .catch((err) => {
+ reportError("Failed to load model list", err);
+ });
+
+ // Fetch the discovered-computer catalog (global, like models). Empty until
+ // the `ssh` extension lands — a safe no-op until then (the selector shows
+ // "Local (none)" only). Non-fatal: a failure leaves an empty list.
+ void fetchImpl(`${httpBase}/computers`)
+ .then((res) => {
+ if (!res.ok) return { computers: [] } as ComputerListResponse;
+ return res.json() as Promise<ComputerListResponse>;
+ })
+ .then((data) => {
+ computers = data?.computers ?? [];
+ })
+ .catch((err) => {
+ reportError("Failed to load computer list", err);
+ });
+
+ // Restore persisted tabs
+ const persistedState = storageAdapter.load();
+ if (persistedState !== null && persistedState.tabs.length > 0) {
+ for (const tab of persistedState.tabs) {
+ const store = createChatFor(tab.conversationId, tab.model, tab.workspaceId);
+ chatStores.set(tab.conversationId, store);
+ void store.load();
+ // Watch each restored conversation's live turns: after a reload mid-turn the
+ // server replays the in-flight turn so we keep rendering it. Queued until the
+ // socket opens.
+ subscribeChat(tab.conversationId);
+ }
+ if (persistedState.activeConversationId !== null) {
+ const activeTab = persistedState.tabs.find(
+ (t) => t.conversationId === persistedState.activeConversationId,
+ );
+ if (activeTab !== undefined) {
+ activeModel = activeTab.model;
+ }
+ }
+ }
+
+ refreshActiveChat();
+ void refreshCwd();
+ void refreshComputer();
+ void refreshModel();
+ void refreshReasoningEffort();
+ void refreshCompactPercent();
+ void refreshVisionSettings();
+
+ // Fetch the authoritative open-conversation list from the backend (cross-
+ // device tab sync). Merges with the localStorage-restored tabs: opens new
+ // ones, removes closed ones, updates titles + statuses.
+ void fetchOpenConversations();
+
+ return {
+ get tabs(): readonly Tab[] {
+ return tabsStore.tabs.filter((t) => t.workspaceId === activeWorkspaceId);
+ },
+ get activeConversationId(): string | null {
+ return tabsStore.activeConversationId;
+ },
+ get activeWorkspaceId(): string {
+ return activeWorkspaceId;
+ },
+ get httpBase(): string {
+ return httpBase;
+ },
+ setActiveWorkspace(workspaceId: string): void {
+ activeWorkspaceId = workspaceId;
+ // Reset to a fresh draft scoped to the new workspace so a new chat is
+ // stamped with the right `workspaceId` on `chat.send`.
+ const nextDraftId = randomId();
+ draftStore = createChatFor(nextDraftId, activeModel, workspaceId);
+ draftConversationId = nextDraftId;
+ tabsStore.newDraft();
+ refreshActiveChat();
+ syncSubscriptions();
+ void refreshCwd();
+ void refreshComputer();
+ void refreshModel();
+ void refreshReasoningEffort();
+ void refreshCompactPercent();
+ },
+ get activeChat(): ChatStore {
+ return activeChat;
+ },
+ get models(): readonly string[] {
+ return models;
+ },
+ get modelInfo(): Readonly<Record<string, ModelMetadata>> {
+ return modelInfo;
+ },
+ get activeModel(): string {
+ return activeModel;
+ },
+ get catalog() {
+ return protocol.catalog;
+ },
+ get surfaces(): readonly SurfaceSpec[] {
+ const out: SurfaceSpec[] = [];
+ for (const entry of protocol.catalog) {
+ const spec = getSurfaceSpec(protocol, entry.id);
+ if (spec) out.push(spec);
+ }
+ return out;
+ },
+ get lastError() {
+ return protocol.lastError;
+ },
+ get storage() {
+ return localStorageOpt;
+ },
+ get cwd(): string | null {
+ return cwd;
+ },
+ get computerId(): string | null {
+ return computerId;
+ },
+ get computers(): readonly ComputerEntry[] {
+ return computers;
+ },
+ get reasoningEffort(): ReasoningEffort | null {
+ return reasoningEffort;
+ },
+ get compactPercent(): number | null {
+ return compactPercent;
+ },
+ get visionSettings(): VisionSettings | null {
+ return visionSettings;
+ },
+ async refreshVisionSettings(): Promise<void> {
+ await refreshVisionSettings();
+ },
+ get chatLimit(): number {
+ return chatLimit;
+ },
+ conversationStatus(conversationId: string): ConversationStatus | undefined {
+ return conversationStatuses.get(conversationId);
+ },
+ workspaceHasActiveConversations(workspaceId: string): boolean {
+ // O(1) lookup into the once-derived `activeWorkspaces` set; false when the
+ // workspace has no active/queued conversation (or none at all).
+ return activeWorkspaces.has(workspaceId);
+ },
+ get currentConversationId(): string {
+ return workspaceConversationId();
+ },
+
+ surface(surfaceId: string): SurfaceSpec | null {
+ return getSurfaceSpec(protocol, surfaceId);
+ },
+
+ send(text: string, images?: readonly ImageInput[]): void {
+ if (tabsStore.activeConversationId === null) {
+ // Draft: promote to tab on first send
+ const conversationId = draftConversationId;
+ const model = activeModel;
+ tabsStore.createTab({
+ conversationId,
+ model,
+ title: deriveTitle(text),
+ workspaceId: activeWorkspaceId,
+ });
+ chatStores.set(conversationId, draftStore);
+ void draftStore.load();
+
+ // Prepare next draft
+ const nextDraftId = randomId();
+ draftStore = createChatFor(nextDraftId, activeModel, activeWorkspaceId);
+ draftConversationId = nextDraftId;
+
+ refreshActiveChat();
+ // The draft became a real conversation: re-scope conversation-scoped
+ // surfaces (e.g. cache-warming) to its id.
+ syncSubscriptions();
+ void refreshCwd();
+ void refreshComputer();
+ void refreshReasoningEffort();
+ void refreshCompactPercent();
+ // Now send on the promoted store
+ chatStores.get(conversationId)?.send(text, images);
+ } else {
+ activeChat.send(text, images);
+ }
+ },
+
+ queueMessage(text: string): void {
+ // Only offered while generating (Composer switches to `chat.queue`
+ // when `status === "running"`), so a draft (never generating) never
+ // reaches here. `chat.queue` auto-starts a turn if idle, so even a race
+ // (turn sealed between the status read and the send) is safe — the
+ // server starts a fresh turn with the message as its opening prompt.
+ activeChat.queueMessage(text);
+ },
+
+ selectModel(model: string): void {
+ activeModel = model;
+ const activeId = tabsStore.activeConversationId;
+ if (activeId !== null) {
+ tabsStore.setModel(activeId, model);
+ chatStores.get(activeId)?.setModel(model);
+ void fetchImpl(`${httpBase}/conversations/${encodeURIComponent(activeId)}/model`, {
+ method: "PUT",
+ headers: { "Content-Type": "application/json" },
+ body: JSON.stringify({ model } satisfies SetModelRequest),
+ }).catch((err) => {
+ reportError("Failed to persist model", err);
+ });
+ } else {
+ draftStore.setModel(model);
+ }
+ },
+
+ newDraft(): void {
+ tabsStore.newDraft();
+ const nextDraftId = randomId();
+ draftStore = createChatFor(nextDraftId, activeModel, activeWorkspaceId);
+ draftConversationId = nextDraftId;
+ refreshActiveChat();
+ syncSubscriptions();
+ void refreshCwd();
+ void refreshComputer();
+ void refreshModel();
+ void refreshReasoningEffort();
+ void refreshCompactPercent();
+ },
+
+ selectTab(conversationId: string): void {
+ tabsStore.selectTab(conversationId);
+ const tab = tabsStore.tabs.find((t) => t.conversationId === conversationId);
+ if (tab !== undefined) {
+ activeModel = tab.model;
+ }
+ refreshActiveChat();
+ syncSubscriptions();
+ void refreshCwd();
+ void refreshComputer();
+ void refreshModel();
+ void refreshReasoningEffort();
+ void refreshCompactPercent();
+ },
+
+ closeTab(conversationId: string): void {
+ // The user is DONE with this chat: abort any in-flight turn + stop/disable
+ // its cache-warming, server-side (POST /close sets status → "closed").
+ closeConversation(conversationId);
+ removeTabLocally(conversationId);
+ },
+
+ renameTab(conversationId: string, title: string): void {
+ tabsStore.setTitle(conversationId, title);
+ void fetchImpl(`${httpBase}/conversations/${encodeURIComponent(conversationId)}/title`, {
+ method: "PUT",
+ headers: { "Content-Type": "application/json" },
+ body: JSON.stringify({ title } satisfies SetTitleRequest),
+ }).catch((err) => {
+ reportError("Failed to rename conversation", err);
+ });
+ },
+
+ invoke(surfaceId: string, actionId: string, payload?: unknown): void {
+ const result = protocolInvoke(
+ protocol,
+ surfaceId,
+ actionId,
+ payload,
+ focusedConversationId(),
+ );
+ protocol = result.state;
+ for (const msg of result.outgoing) {
+ socket?.send(msg);
+ }
+ },
+
+ async warmNow(): Promise<WarmResult | null> {
+ const conversationId = tabsStore.activeConversationId;
+ if (conversationId === null) return null;
+ const body: WarmRequest = { conversationId, model: activeModel };
+ try {
+ const res = await fetchImpl(`${httpBase}/chat/warm`, {
+ method: "POST",
+ headers: { "content-type": "application/json" },
+ body: JSON.stringify(body),
+ });
+ if (!res.ok) {
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return { ok: false, error: errBody?.error ?? `Warm failed (HTTP ${res.status})` };
+ }
+ return { ok: true, response: (await res.json()) as WarmResponse };
+ } catch (err) {
+ return { ok: false, error: err instanceof Error ? err.message : "Warm request failed" };
+ }
+ },
+
+ async setCwd(value: string): Promise<CwdResult | null> {
+ const id = workspaceConversationId();
+ const body: SetCwdRequest = {
+ cwd: value,
+ workspaceId: untrack(() => activeWorkspaceId),
+ };
+ try {
+ const res = await fetchImpl(`${httpBase}/conversations/${encodeURIComponent(id)}/cwd`, {
+ method: "PUT",
+ headers: { "content-type": "application/json" },
+ body: JSON.stringify(body),
+ });
+ if (!res.ok) {
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return { ok: false, error: errBody?.error ?? `Set cwd failed (HTTP ${res.status})` };
+ }
+ const data = (await res.json()) as CwdResponse;
+ const next = data.cwd ?? null;
+ if (workspaceConversationId() === id) cwd = next;
+ return { ok: true, cwd: next };
+ } catch (err) {
+ return { ok: false, error: err instanceof Error ? err.message : "Set cwd request failed" };
+ }
+ },
+
+ async setComputer(computerIdValue: string | null): Promise<ComputerResult | null> {
+ const id = workspaceConversationId();
+ const body: SetConversationComputerRequest = { computerId: computerIdValue };
+ try {
+ const res = await fetchImpl(
+ `${httpBase}/conversations/${encodeURIComponent(id)}/computer`,
+ {
+ method: "PUT",
+ headers: { "content-type": "application/json" },
+ body: JSON.stringify(body),
+ },
+ );
+ if (!res.ok) {
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return {
+ ok: false,
+ error: errBody?.error ?? `Set computer failed (HTTP ${res.status})`,
+ };
+ }
+ const data = (await res.json()) as ConversationComputerResponse;
+ const next = data.computerId ?? null;
+ if (workspaceConversationId() === id) computerId = next;
+ return { ok: true, computerId: next };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "Set computer request failed",
+ };
+ }
+ },
+
+ async computerStatus(alias: string): Promise<ComputerStatusResult | null> {
+ if (alias === "") return null;
+ try {
+ const res = await fetchImpl(`${httpBase}/computers/${encodeURIComponent(alias)}/status`);
+ if (!res.ok) {
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return {
+ ok: false,
+ error: errBody?.error ?? `Computer status failed (HTTP ${res.status})`,
+ };
+ }
+ const status = (await res.json()) as ComputerStatusResponse;
+ return { ok: true, response: status };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "Computer status request failed",
+ };
+ }
+ },
+
+ async testComputer(alias: string): Promise<TestComputerResult | null> {
+ if (alias === "") return null;
+ try {
+ const res = await fetchImpl(`${httpBase}/computers/${encodeURIComponent(alias)}/test`, {
+ method: "POST",
+ });
+ if (!res.ok) {
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return {
+ ok: false,
+ error: errBody?.error ?? `Test computer failed (HTTP ${res.status})`,
+ };
+ }
+ const response = (await res.json()) as TestComputerResponse;
+ return { ok: true, response };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "Test computer request failed",
+ };
+ }
+ },
+
+ async setReasoningEffort(level: ReasoningEffort): Promise<ReasoningEffortResult | null> {
+ const id = workspaceConversationId();
+ const body: SetReasoningEffortRequest = { reasoningEffort: level };
+ try {
+ const res = await fetchImpl(
+ `${httpBase}/conversations/${encodeURIComponent(id)}/reasoning-effort`,
+ {
+ method: "PUT",
+ headers: { "content-type": "application/json" },
+ body: JSON.stringify(body),
+ },
+ );
+ if (!res.ok) {
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return {
+ ok: false,
+ error: errBody?.error ?? `Set reasoning effort failed (HTTP ${res.status})`,
+ };
+ }
+ const data = (await res.json()) as ReasoningEffortResponse;
+ const next = data.reasoningEffort ?? level;
+ if (workspaceConversationId() === id) reasoningEffort = next;
+ return { ok: true, reasoningEffort: next };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "Set reasoning effort request failed",
+ };
+ }
+ },
+
+ stopGeneration(): void {
+ const conversationId = tabsStore.activeConversationId;
+ if (conversationId === null) return;
+ void fetchImpl(`${httpBase}/conversations/${encodeURIComponent(conversationId)}/stop`, {
+ method: "POST",
+ }).catch((err) => {
+ reportError("Failed to stop generation", err);
+ });
+ },
+
+ async compactNow(keepLastN?: number): Promise<CompactResult | null> {
+ const conversationId = tabsStore.activeConversationId;
+ if (conversationId === null) return null;
+ const body: Record<string, unknown> = {};
+ if (keepLastN !== undefined) body.keepLastN = keepLastN;
+ try {
+ const res = await fetchImpl(
+ `${httpBase}/conversations/${encodeURIComponent(conversationId)}/compact`,
+ {
+ method: "POST",
+ headers: { "content-type": "application/json" },
+ body: JSON.stringify(body),
+ },
+ );
+ if (!res.ok) {
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return {
+ ok: false,
+ error: errBody?.error ?? `Compact failed (HTTP ${res.status})`,
+ };
+ }
+ const data = (await res.json()) as CompactResponse;
+ return { ok: true, response: data };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "Compact request failed",
+ };
+ }
+ },
+
+ async setCompactPercent(percent: number): Promise<CompactPercentResult | null> {
+ const id = workspaceConversationId();
+ const body: SetCompactPercentRequest = { threshold: percent };
+ try {
+ const res = await fetchImpl(
+ `${httpBase}/conversations/${encodeURIComponent(id)}/compact-percent`,
+ {
+ method: "PUT",
+ headers: { "content-type": "application/json" },
+ body: JSON.stringify(body),
+ },
+ );
+ if (!res.ok) {
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return {
+ ok: false,
+ error: errBody?.error ?? `Set compact percent failed (HTTP ${res.status})`,
+ };
+ }
+ const data = (await res.json()) as CompactPercentResponse;
+ if (workspaceConversationId() === id) compactPercent = data.threshold;
+ return { ok: true, percent: data.threshold };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "Set compact percent request failed",
+ };
+ }
+ },
+
+ async setVisionSettings(patch: VisionSettingsPatch): Promise<VisionSettingsResult | null> {
+ const body: SetVisionSettingsRequest = patch;
+ try {
+ const res = await fetchImpl(`${httpBase}/settings/vision`, {
+ method: "PUT",
+ headers: { "content-type": "application/json" },
+ body: JSON.stringify(body),
+ });
+ if (!res.ok) {
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return {
+ ok: false,
+ error: errBody?.error ?? `Set vision settings failed (HTTP ${res.status})`,
+ };
+ }
+ const data = normalizeVisionSettings(await res.json());
+ visionSettings = data;
+ return { ok: true, settings: data };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "Set vision settings request failed",
+ };
+ }
+ },
+
+ async setChatLimit(limit: number): Promise<ChatLimitResult> {
+ const next = normalizeChatLimit(limit);
+ chatLimitStore.save(next);
+ chatLimit = next;
+ // Propagate to every live chat store. The ACTIVE one is awaited so its
+ // refill (on a raise) lands before the caller returns — letting the
+ // shell preserve scroll over the prepended older chunks. Background
+ // stores refill fire-and-forget. Future stores pick the new limit up at
+ // creation (via the persisted store).
+ const active = getActiveChat();
+ await active.setChatLimit(next);
+ for (const s of chatStores.values()) {
+ if (s !== active) void s.setChatLimit(next);
+ }
+ if (draftStore !== active) void draftStore.setChatLimit(next);
+ return { ok: true, chatLimit: next };
+ },
+
+ async lspStatus(): Promise<LspResult | null> {
+ const id = workspaceConversationId();
+ try {
+ const res = await fetchImpl(`${httpBase}/conversations/${encodeURIComponent(id)}/lsp`);
+ if (!res.ok) {
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return { ok: false, error: errBody?.error ?? `LSP status failed (HTTP ${res.status})` };
+ }
+ // Normalize the untyped body at this network seam so a malformed/partial
+ // response can never crash the renderer (servers is guaranteed an array).
+ const data = (await res.json()) as Partial<LspStatusResponse>;
+ const response: LspStatusResponse = {
+ conversationId: data.conversationId ?? id,
+ cwd: data.cwd ?? null,
+ servers: Array.isArray(data.servers) ? data.servers : [],
+ };
+ return { ok: true, response };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "LSP status request failed",
+ };
+ }
+ },
+
+ async mcpStatus(): Promise<McpResult | null> {
+ const id = workspaceConversationId();
+ try {
+ const res = await fetchImpl(`${httpBase}/conversations/${encodeURIComponent(id)}/mcp`);
+ if (!res.ok) {
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return { ok: false, error: errBody?.error ?? `MCP status failed (HTTP ${res.status})` };
+ }
+ // Normalize the untyped body at this network seam so a malformed/partial
+ // response can never crash the renderer (servers is guaranteed an array).
+ const data = (await res.json()) as Partial<McpStatusResponse>;
+ const response: McpStatusResponse = {
+ conversationId: data.conversationId ?? id,
+ cwd: data.cwd ?? null,
+ servers: Array.isArray(data.servers) ? data.servers : [],
+ };
+ return { ok: true, response };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "MCP status request failed",
+ };
+ }
+ },
+
+ async heartbeatConfig(): Promise<HeartbeatConfigResult> {
+ // Workspace-scoped (NOT per-conversation): use the active workspace id.
+ const wsId = untrack(() => activeWorkspaceId);
+ try {
+ const res = await fetchImpl(`${httpBase}/workspaces/${encodeURIComponent(wsId)}/heartbeat`);
+ if (!res.ok) {
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return {
+ ok: false,
+ error: errBody?.error ?? `Heartbeat config failed (HTTP ${res.status})`,
+ };
+ }
+ // Normalize the untyped JSON at the network seam (pure helper) so a
+ // malformed/partial response can never crash the renderer.
+ const config: HeartbeatConfig = normalizeHeartbeatConfig(await res.json());
+ return { ok: true, config };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "Heartbeat config request failed",
+ };
+ }
+ },
+
+ async setHeartbeatConfig(patch: HeartbeatConfigPatch): Promise<HeartbeatConfigResult> {
+ const wsId = untrack(() => activeWorkspaceId);
+ try {
+ const res = await fetchImpl(
+ `${httpBase}/workspaces/${encodeURIComponent(wsId)}/heartbeat`,
+ {
+ method: "PUT",
+ headers: { "content-type": "application/json" },
+ body: JSON.stringify(patch),
+ },
+ );
+ if (!res.ok) {
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return {
+ ok: false,
+ error: errBody?.error ?? `Set heartbeat config failed (HTTP ${res.status})`,
+ };
+ }
+ const config: HeartbeatConfig = normalizeHeartbeatConfig(await res.json());
+ return { ok: true, config };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "Set heartbeat config request failed",
+ };
+ }
+ },
+
+ async heartbeatRuns(): Promise<HeartbeatRunsResult> {
+ const wsId = untrack(() => activeWorkspaceId);
+ try {
+ const res = await fetchImpl(
+ `${httpBase}/workspaces/${encodeURIComponent(wsId)}/heartbeat/runs`,
+ );
+ if (!res.ok) {
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return {
+ ok: false,
+ error: errBody?.error ?? `Heartbeat runs failed (HTTP ${res.status})`,
+ };
+ }
+ const runs: readonly HeartbeatRun[] = normalizeHeartbeatRuns(await res.json());
+ return { ok: true, runs };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "Heartbeat runs request failed",
+ };
+ }
+ },
+
+ async stopHeartbeatRun(runId: string): Promise<HeartbeatStopResult> {
+ const wsId = untrack(() => activeWorkspaceId);
+ try {
+ const res = await fetchImpl(
+ `${httpBase}/workspaces/${encodeURIComponent(wsId)}/heartbeat/runs/${encodeURIComponent(runId)}/stop`,
+ { method: "POST" },
+ );
+ if (!res.ok) {
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return {
+ ok: false,
+ error: errBody?.error ?? `Stop heartbeat run failed (HTTP ${res.status})`,
+ };
+ }
+ return { ok: true };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "Stop heartbeat run request failed",
+ };
+ }
+ },
+
+ async heartbeatNextRun(): Promise<HeartbeatNextRunResult> {
+ const wsId = untrack(() => activeWorkspaceId);
+ try {
+ const res = await fetchImpl(
+ `${httpBase}/workspaces/${encodeURIComponent(wsId)}/heartbeat/next-run`,
+ );
+ if (!res.ok) {
+ // 404 = the backend hasn't shipped CR-HB-3 yet → the FE falls back to
+ // an approximation. Surface as ok:false (non-fatal).
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return {
+ ok: false,
+ error: errBody?.error ?? `Heartbeat next-run failed (HTTP ${res.status})`,
+ };
+ }
+ const data = (await res.json().catch(() => null)) as { nextRunAt?: string | null } | null;
+ // `null` (disabled / no run scheduled) passes through; anything non-string
+ // also becomes null so a malformed body can't crash the countdown.
+ const raw = data?.nextRunAt;
+ const nextRunAt = typeof raw === "string" ? raw : null;
+ return { ok: true, nextRunAt };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "Heartbeat next-run request failed",
+ };
+ }
+ },
+
+ watchConversation(conversationId: string): ChatStore {
+ return watchConversation(conversationId);
+ },
+
+ unwatchConversation(conversationId: string): void {
+ unwatchConversation(conversationId);
+ },
+
+ // ── Concurrency (per-provider limits + live status; GLOBAL, not workspace-scoped)
+
+ async concurrencyLimits(): Promise<ConcurrencyLimitsResult> {
+ try {
+ const res = await fetchImpl(`${httpBase}/concurrency/limits`);
+ if (!res.ok) {
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return {
+ ok: false,
+ error: errBody?.error ?? `Concurrency limits failed (HTTP ${res.status})`,
+ };
+ }
+ // Normalize the untyped JSON at the network seam (pure helper) so a
+ // malformed/partial response (e.g. the extension returning `{}`) can
+ // never crash the renderer.
+ const limits = normalizeConcurrencyLimits(await res.json());
+ return { ok: true, limits };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "Concurrency limits request failed",
+ };
+ }
+ },
+
+ async getConcurrencyLimit(providerId: string): Promise<ConcurrencyLimitResult> {
+ try {
+ const res = await fetchImpl(
+ `${httpBase}/concurrency/limits/${encodeURIComponent(providerId)}`,
+ );
+ if (!res.ok) {
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return {
+ ok: false,
+ error: errBody?.error ?? `Concurrency limit failed (HTTP ${res.status})`,
+ };
+ }
+ const limit = normalizeConcurrencyLimit(await res.json());
+ if (limit === null) {
+ return { ok: false, error: "Malformed concurrency limit response" };
+ }
+ return { ok: true, providerId: limit.providerId, limit: limit.limit };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "Concurrency limit request failed",
+ };
+ }
+ },
+
+ async setConcurrencyLimit(providerId: string, limit: number): Promise<ConcurrencyLimitResult> {
+ try {
+ const res = await fetchImpl(
+ `${httpBase}/concurrency/limits/${encodeURIComponent(providerId)}`,
+ {
+ method: "PUT",
+ headers: { "content-type": "application/json" },
+ body: JSON.stringify({ limit }),
+ },
+ );
+ if (!res.ok) {
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return {
+ ok: false,
+ error: errBody?.error ?? `Set concurrency limit failed (HTTP ${res.status})`,
+ };
+ }
+ const echoed = normalizeConcurrencyLimit(await res.json());
+ if (echoed === null) {
+ return { ok: false, error: "Malformed concurrency limit response" };
+ }
+ return { ok: true, providerId: echoed.providerId, limit: echoed.limit };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "Set concurrency limit request failed",
+ };
+ }
+ },
+
+ async deleteConcurrencyLimit(providerId: string): Promise<ConcurrencyDeleteResult> {
+ try {
+ const res = await fetchImpl(
+ `${httpBase}/concurrency/limits/${encodeURIComponent(providerId)}`,
+ { method: "DELETE" },
+ );
+ if (!res.ok) {
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return {
+ ok: false,
+ error: errBody?.error ?? `Delete concurrency limit failed (HTTP ${res.status})`,
+ };
+ }
+ return { ok: true, providerId };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "Delete concurrency limit request failed",
+ };
+ }
+ },
+
+ async concurrencyStatus(): Promise<ConcurrencyStatusResult> {
+ try {
+ const res = await fetchImpl(`${httpBase}/concurrency/status`);
+ if (!res.ok) {
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return {
+ ok: false,
+ error: errBody?.error ?? `Concurrency status failed (HTTP ${res.status})`,
+ };
+ }
+ const providers = normalizeConcurrencyStatus(await res.json());
+ return { ok: true, providers };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "Concurrency status request failed",
+ };
+ }
+ },
+
+ async getConcurrencyCooldown(providerId: string): Promise<ConcurrencyCooldownResult> {
+ try {
+ const res = await fetchImpl(
+ `${httpBase}/concurrency/cooldown/${encodeURIComponent(providerId)}`,
+ );
+ if (!res.ok) {
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return {
+ ok: false,
+ error: errBody?.error ?? `Get concurrency cooldown failed (HTTP ${res.status})`,
+ };
+ }
+ const data = normalizeConcurrencyCooldown(await res.json());
+ if (data === null) {
+ return { ok: false, error: "Malformed concurrency cooldown response" };
+ }
+ return { ok: true, providerId: data.providerId, cooldownMs: data.cooldownMs };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "Get concurrency cooldown request failed",
+ };
+ }
+ },
+
+ async setConcurrencyCooldown(
+ providerId: string,
+ cooldownMs: number,
+ ): Promise<ConcurrencyCooldownResult> {
+ try {
+ const res = await fetchImpl(
+ `${httpBase}/concurrency/cooldown/${encodeURIComponent(providerId)}`,
+ {
+ method: "PUT",
+ headers: { "content-type": "application/json" },
+ body: JSON.stringify({ cooldownMs }),
+ },
+ );
+ if (!res.ok) {
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return {
+ ok: false,
+ error: errBody?.error ?? `Set concurrency cooldown failed (HTTP ${res.status})`,
+ };
+ }
+ const data = normalizeConcurrencyCooldown(await res.json());
+ if (data === null) {
+ return { ok: false, error: "Malformed concurrency cooldown response" };
+ }
+ return { ok: true, providerId: data.providerId, cooldownMs: data.cooldownMs };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "Set concurrency cooldown request failed",
+ };
+ }
+ },
+
+ async loadSystemPrompt(): Promise<SystemPromptLoadResult> {
+ try {
+ const res = await fetchImpl(`${httpBase}/system-prompt`);
+ if (!res.ok) {
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return {
+ ok: false,
+ error: errBody?.error ?? `Load system prompt failed (HTTP ${res.status})`,
+ };
+ }
+ const data = (await res.json()) as SystemPromptTemplateResponse;
+ return { ok: true, template: data.template ?? "" };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "Load system prompt request failed",
+ };
+ }
+ },
+
+ async setSystemPrompt(template: string): Promise<SystemPromptSaveResult> {
+ try {
+ const body: SetSystemPromptTemplateRequest = { template };
+ const res = await fetchImpl(`${httpBase}/system-prompt`, {
+ method: "PUT",
+ headers: { "content-type": "application/json" },
+ body: JSON.stringify(body),
+ });
+ if (!res.ok) {
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return {
+ ok: false,
+ error: errBody?.error ?? `Set system prompt failed (HTTP ${res.status})`,
+ };
+ }
+ const data = (await res.json()) as SystemPromptTemplateResponse;
+ return { ok: true, template: data.template };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "Set system prompt request failed",
+ };
+ }
+ },
+
+ async loadSystemPromptVariables(): Promise<SystemPromptVariablesResult> {
+ try {
+ const res = await fetchImpl(`${httpBase}/system-prompt/variables`);
+ if (!res.ok) {
+ const errBody = (await res.json().catch(() => null)) as { error?: string } | null;
+ return {
+ ok: false,
+ error: errBody?.error ?? `Load system prompt variables failed (HTTP ${res.status})`,
+ };
+ }
+ const data = (await res.json()) as Partial<SystemPromptVariablesResponse>;
+ return { ok: true, variables: Array.isArray(data.variables) ? data.variables : [] };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "Load system prompt variables request failed",
+ };
+ }
+ },
+
+ attachUnloadGate(gate: () => boolean): void {
+ unloadGate = gate;
+ },
+
+ get fatalError(): string | null {
+ return fatalError;
+ },
+ clearFatalError(): void {
+ fatalError = null;
+ },
+
+ dispose(): void {
+ for (const store of chatStores.values()) {
+ store.dispose();
+ }
+ chatStores.clear();
+ for (const store of watchStores.values()) {
+ store.dispose();
+ }
+ watchStores.clear();
+ draftStore.dispose();
+ socket?.close();
+ socket = null;
+ },
+ };
}
diff --git a/src/app/store.test.ts b/src/app/store.test.ts
index 86a21d6..a945ea7 100644
--- a/src/app/store.test.ts
+++ b/src/app/store.test.ts
@@ -1,751 +1,2089 @@
import type { ConversationHistoryResponse, WsServerMessage } from "@dispatch/transport-contract";
import type { SurfaceServerMessage } from "@dispatch/ui-contract";
-import { describe, expect, it } from "vitest";
+import { describe, expect, it, vi } from "vitest";
import type { WebSocketLike } from "../adapters/ws";
import { createAppStore } from "./store.svelte";
interface FakeSocket extends WebSocketLike {
- sent: string[];
- resolveOpen(): void;
- feedServerMessage(data: WsServerMessage): void;
- feedSurfaceMessage(data: SurfaceServerMessage): void;
+ sent: string[];
+ resolveOpen(): void;
+ feedServerMessage(data: WsServerMessage): void;
+ feedSurfaceMessage(data: SurfaceServerMessage): void;
}
function fakeSocket(): FakeSocket {
- let onopen: (() => void) | null = null;
- let onmessage: ((ev: { data: string }) => void) | null = null;
- const sent: string[] = [];
-
- const ws: FakeSocket = {
- send(data: string) {
- sent.push(data);
- },
- close() {},
- get onopen() {
- return onopen;
- },
- set onopen(fn) {
- onopen = fn;
- },
- get onmessage() {
- return onmessage;
- },
- set onmessage(fn) {
- onmessage = fn;
- },
- get onclose() {
- return null;
- },
- set onclose(_fn) {},
- resolveOpen() {
- onopen?.();
- },
- feedServerMessage(msg: WsServerMessage) {
- onmessage?.({ data: JSON.stringify(msg) });
- },
- feedSurfaceMessage(msg: SurfaceServerMessage) {
- onmessage?.({ data: JSON.stringify(msg) });
- },
- sent,
- };
- return ws;
+ let onopen: (() => void) | null = null;
+ let onmessage: ((ev: { data: string }) => void) | null = null;
+ const sent: string[] = [];
+
+ const ws: FakeSocket = {
+ send(data: string) {
+ sent.push(data);
+ },
+ close() {},
+ get onopen() {
+ return onopen;
+ },
+ set onopen(fn) {
+ onopen = fn;
+ },
+ get onmessage() {
+ return onmessage;
+ },
+ set onmessage(fn) {
+ onmessage = fn;
+ },
+ get onclose() {
+ return null;
+ },
+ set onclose(_fn) {},
+ resolveOpen() {
+ onopen?.();
+ },
+ feedServerMessage(msg: WsServerMessage) {
+ onmessage?.({ data: JSON.stringify(msg) });
+ },
+ feedSurfaceMessage(msg: SurfaceServerMessage) {
+ onmessage?.({ data: JSON.stringify(msg) });
+ },
+ sent,
+ };
+ return ws;
+}
+
+/**
+ * A fake socket that supports the close→reconnect cycle (the base `fakeSocket`
+ * swallows `onclose`). The factory returns the SAME instance on every connect, so
+ * `sent` accumulates and `open()` can be driven again after `closeRemote()`.
+ */
+interface ReconnectableSocket extends WebSocketLike {
+ sent: string[];
+ open(): void;
+ closeRemote(): void;
+}
+
+function reconnectableSocket(): ReconnectableSocket {
+ let onopen: (() => void) | null = null;
+ let onmessage: ((ev: { data: string }) => void) | null = null;
+ let onclose: ((ev: { code: number; reason: string }) => void) | null = null;
+ const sent: string[] = [];
+ return {
+ send(data: string) {
+ sent.push(data);
+ },
+ close() {},
+ get onopen() {
+ return onopen;
+ },
+ set onopen(fn) {
+ onopen = fn;
+ },
+ get onmessage() {
+ return onmessage;
+ },
+ set onmessage(fn) {
+ onmessage = fn;
+ },
+ get onclose() {
+ return onclose;
+ },
+ set onclose(fn) {
+ onclose = fn;
+ },
+ sent,
+ open() {
+ onopen?.();
+ },
+ closeRemote() {
+ onclose?.({ code: 1006, reason: "" });
+ },
+ };
}
interface FakeFetchOptions {
- models?: readonly string[];
- history?: Record<string, ConversationHistoryResponse>;
+ models?: readonly string[];
+ history?: Record<string, ConversationHistoryResponse>;
+ model?: string | null;
}
function fakeFetchImpl(opts?: FakeFetchOptions): typeof fetch {
- const models = opts?.models ?? ["opencode/deepseek-v4-flash", "openai/gpt-4o"];
- const history = opts?.history ?? {};
- return async (input: string | URL | Request): Promise<Response> => {
- const url = typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
- if (url.endsWith("/models")) {
- return new Response(JSON.stringify({ models }), { status: 200 });
- }
- const body =
- history[url] ?? ({ chunks: [], latestSeq: 0 } satisfies ConversationHistoryResponse);
- return new Response(JSON.stringify(body), { status: 200 });
- };
+ const models = opts?.models ?? ["opencode/deepseek-v4-flash", "openai/gpt-4o"];
+ const history = opts?.history ?? {};
+ return async (input: string | URL | Request): Promise<Response> => {
+ const url = typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ if (url.endsWith("/models")) {
+ return new Response(JSON.stringify({ models }), { status: 200 });
+ }
+ if (url.endsWith("/model")) {
+ return new Response(
+ JSON.stringify({
+ conversationId: "ignored",
+ model: opts?.model ?? null,
+ }),
+ { status: 200 },
+ );
+ }
+ const body =
+ history[url] ?? ({ chunks: [], latestSeq: 0 } satisfies ConversationHistoryResponse);
+ return new Response(JSON.stringify(body), { status: 200 });
+ };
}
-function parseSent(ws: FakeSocket): unknown[] {
- return ws.sent.map((s) => JSON.parse(s));
+function parseSent(ws: { sent: string[] }): unknown[] {
+ return ws.sent.map((s) => JSON.parse(s));
}
function createFakeStorage(): Storage {
- const map = new Map<string, string>();
- return {
- get length() {
- return map.size;
- },
- clear() {
- map.clear();
- },
- getItem(key: string): string | null {
- return map.get(key) ?? null;
- },
- key(_index: number): string | null {
- return null;
- },
- removeItem(key: string) {
- map.delete(key);
- },
- setItem(key: string, value: string) {
- map.set(key, value);
- },
- };
+ const map = new Map<string, string>();
+ return {
+ get length() {
+ return map.size;
+ },
+ clear() {
+ map.clear();
+ },
+ getItem(key: string): string | null {
+ return map.get(key) ?? null;
+ },
+ key(_index: number): string | null {
+ return null;
+ },
+ removeItem(key: string) {
+ map.delete(key);
+ },
+ setItem(key: string, value: string) {
+ map.set(key, value);
+ },
+ };
}
function activeConversationId(store: ReturnType<typeof createAppStore>): string {
- const id = store.activeConversationId;
- expect(id).not.toBeNull();
- return id as string;
+ const id = store.activeConversationId;
+ expect(id).not.toBeNull();
+ return id as string;
}
describe("createAppStore", () => {
- it("starts with empty catalog and no selection", () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- conversationId: "test-conv",
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- expect(store.catalog).toEqual([]);
- expect(store.selectedId).toBeNull();
- expect(store.selectedSpec).toBeNull();
- expect(store.lastError).toBeNull();
-
- store.dispose();
- });
-
- it("updates catalog when catalog message arrives", () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- conversationId: "test-conv",
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- ws.feedSurfaceMessage({
- type: "catalog",
- catalog: [
- { id: "s1", region: "sidebar", title: "Surface One" },
- { id: "s2", region: "panel", title: "Surface Two" },
- ],
- });
-
- expect(store.catalog).toHaveLength(2);
- expect(store.catalog[0]?.id).toBe("s1");
- expect(store.catalog[1]?.id).toBe("s2");
-
- store.dispose();
- });
-
- it("select sends subscribe and sets selectedId", () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- conversationId: "test-conv",
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- ws.feedSurfaceMessage({
- type: "catalog",
- catalog: [{ id: "s1", region: "sidebar", title: "Surface One" }],
- });
-
- ws.sent.length = 0;
- store.select("s1");
-
- expect(store.selectedId).toBe("s1");
- const subscribeMsg = ws.sent.find((s) => {
- const parsed = JSON.parse(s);
- return parsed.type === "subscribe" && parsed.surfaceId === "s1";
- });
- expect(subscribeMsg).toBeTruthy();
-
- store.dispose();
- });
-
- it("selecting a different surface unsubscribes from previous", () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- conversationId: "test-conv",
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- ws.feedSurfaceMessage({
- type: "catalog",
- catalog: [
- { id: "s1", region: "sidebar", title: "Surface One" },
- { id: "s2", region: "panel", title: "Surface Two" },
- ],
- });
-
- ws.sent.length = 0;
- store.select("s1");
- store.select("s2");
-
- const unsubscribeMsg = ws.sent.find((s) => {
- const parsed = JSON.parse(s);
- return parsed.type === "unsubscribe" && parsed.surfaceId === "s1";
- });
- expect(unsubscribeMsg).toBeTruthy();
-
- const subscribeMsg = ws.sent.find((s) => {
- const parsed = JSON.parse(s);
- return parsed.type === "subscribe" && parsed.surfaceId === "s2";
- });
- expect(subscribeMsg).toBeTruthy();
-
- store.dispose();
- });
-
- it("surface message updates selectedSpec", () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- conversationId: "test-conv",
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- ws.feedSurfaceMessage({
- type: "catalog",
- catalog: [{ id: "s1", region: "sidebar", title: "Surface One" }],
- });
-
- store.select("s1");
-
- ws.feedSurfaceMessage({
- type: "surface",
- spec: {
- id: "s1",
- region: "sidebar",
- title: "Surface One",
- fields: [{ kind: "stat", label: "Tokens", value: "1,234" }],
- },
- });
-
- expect(store.selectedSpec).not.toBeNull();
- expect(store.selectedSpec?.id).toBe("s1");
- expect(store.selectedSpec?.fields).toHaveLength(1);
-
- store.dispose();
- });
-
- it("invoke sends an invoke message", () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- conversationId: "test-conv",
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- ws.sent.length = 0;
- store.invoke("s1", "toggle-dark", true);
-
- const invokeMsg = ws.sent.find((s) => {
- const parsed = JSON.parse(s);
- return (
- parsed.type === "invoke" &&
- parsed.surfaceId === "s1" &&
- parsed.actionId === "toggle-dark" &&
- parsed.payload === true
- );
- });
- expect(invokeMsg).toBeTruthy();
-
- store.dispose();
- });
-
- it("error message updates lastError", () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- conversationId: "test-conv",
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- ws.feedSurfaceMessage({
- type: "error",
- message: "Something went wrong",
- });
-
- expect(store.lastError).not.toBeNull();
- expect(store.lastError?.message).toBe("Something went wrong");
-
- store.dispose();
- });
-
- it("dispose closes the socket", () => {
- const ws = fakeSocket();
- const closeSpy = { called: false };
- const origClose = ws.close.bind(ws);
- ws.close = () => {
- closeSpy.called = true;
- origClose();
- };
-
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- conversationId: "test-conv",
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- store.dispose();
- expect(closeSpy.called).toBe(true);
- });
-
- it("exposes activeChat with empty initial messages", () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- expect(store.activeChat).toBeDefined();
- expect(store.activeChat.messages).toEqual([]);
- expect(store.activeChat.chunks).toEqual([]);
- expect(store.activeChat.error).toBeNull();
-
- store.dispose();
- });
-
- it("sending a message from draft creates a tab and posts chat.send", () => {
- const ws = fakeSocket();
- const storage = createFakeStorage();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- localStorage: storage,
- });
- ws.resolveOpen();
-
- ws.sent.length = 0;
- store.send("hello world");
-
- expect(store.tabs).toHaveLength(1);
- expect(store.tabs[0]?.title).toBe("hello world");
- expect(store.activeConversationId).not.toBeNull();
-
- const msgs = parseSent(ws);
- const chatSend = msgs.find((m) => (m as { type: string }).type === "chat.send") as
- | { type: string; conversationId: string; message: string }
- | undefined;
- expect(chatSend).toBeTruthy();
- expect(chatSend?.message).toBe("hello world");
-
- store.dispose();
- });
-
- it("an incoming chat.delta renders in the transcript", () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- store.send("test");
- const convId = activeConversationId(store);
-
- ws.feedServerMessage({
- type: "chat.delta",
- event: { type: "turn-start", conversationId: convId, turnId: "turn-1" },
- });
-
- ws.feedServerMessage({
- type: "chat.delta",
- event: { type: "text-delta", conversationId: convId, turnId: "turn-1", delta: "Hello " },
- });
-
- ws.feedServerMessage({
- type: "chat.delta",
- event: { type: "text-delta", conversationId: convId, turnId: "turn-1", delta: "world" },
- });
-
- expect(store.activeChat.chunks.length).toBeGreaterThan(0);
- const assistantChunks = store.activeChat.chunks.filter(
- (c) => c.role === "assistant" && c.chunk.type === "text",
- );
- expect(assistantChunks).toHaveLength(1);
- expect((assistantChunks[0]?.chunk as { type: "text"; text: string }).text).toBe("Hello world");
-
- store.dispose();
- });
-
- it("chat.error sets the chat error", () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- store.send("test");
- const convId = activeConversationId(store);
-
- ws.feedServerMessage({
- type: "chat.error",
- conversationId: convId,
- message: "bad request",
- });
-
- expect(store.activeChat.error).toBe("bad request");
-
- store.dispose();
- });
-
- it("turn-sealed triggers a history fetch and synced chunks render", async () => {
- const fetchedUrls: string[] = [];
- const historyResponse: ConversationHistoryResponse = {
- chunks: [
- { seq: 1, role: "user", chunk: { type: "text", text: "hi" } },
- { seq: 2, role: "assistant", chunk: { type: "text", text: "hello!" } },
- ],
- latestSeq: 2,
- };
- const fetchImpl: typeof fetch = async (input: string | URL | Request): Promise<Response> => {
- const url = typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
- fetchedUrls.push(url);
- if (url.endsWith("/models")) {
- return new Response(JSON.stringify({ models: ["opencode/deepseek-v4-flash"] }), {
- status: 200,
- });
- }
- return new Response(JSON.stringify(historyResponse), { status: 200 });
- };
-
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl,
- httpUrl: "http://localhost:24203",
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- store.send("hi");
- const convId = activeConversationId(store);
-
- ws.feedServerMessage({
- type: "chat.delta",
- event: { type: "turn-start", conversationId: convId, turnId: "turn-1" },
- });
-
- ws.feedServerMessage({
- type: "chat.delta",
- event: { type: "turn-sealed", conversationId: convId, turnId: "turn-1" },
- });
-
- await new Promise((r) => setTimeout(r, 50));
-
- expect(fetchedUrls.some((u) => u.includes(`/conversations/${convId}?sinceSeq=`))).toBe(true);
-
- await new Promise((r) => setTimeout(r, 50));
-
- expect(store.activeChat.chunks.length).toBeGreaterThan(0);
-
- store.dispose();
- });
-
- it("fetches and exposes the model catalog", async () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl({
- models: ["opencode/deepseek-v4-flash", "openai/gpt-4o", "anthropic/claude-3"],
- }),
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- await new Promise((r) => setTimeout(r, 50));
-
- expect(store.models).toEqual([
- "opencode/deepseek-v4-flash",
- "openai/gpt-4o",
- "anthropic/claude-3",
- ]);
-
- store.dispose();
- });
-
- it("default model is flash", () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- expect(store.activeModel).toBe("opencode/deepseek-v4-flash");
-
- store.dispose();
- });
-
- it("draft: sending the first message creates a tab titled from the message", () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- expect(store.tabs).toHaveLength(0);
- expect(store.activeConversationId).toBeNull();
-
- store.send("What is the meaning of life?");
-
- expect(store.tabs).toHaveLength(1);
- expect(store.tabs[0]?.title).toBe("What is the meaning of life?");
- expect(store.activeConversationId).toBe(store.tabs[0]?.conversationId);
-
- store.dispose();
- });
-
- it("selecting a model updates the active tab", () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- store.send("hello");
-
- store.selectModel("openai/gpt-4o");
-
- expect(store.activeModel).toBe("openai/gpt-4o");
- expect(store.tabs[0]?.model).toBe("openai/gpt-4o");
-
- store.dispose();
- });
-
- it("chat.delta routes to the matching tab only", () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- store.send("first message");
- const convId1 = activeConversationId(store);
-
- store.newDraft();
- store.send("second message");
- const convId2 = activeConversationId(store);
-
- expect(convId1).not.toBe(convId2);
-
- ws.feedServerMessage({
- type: "chat.delta",
- event: { type: "turn-start", conversationId: convId1, turnId: "turn-1" },
- });
- ws.feedServerMessage({
- type: "chat.delta",
- event: {
- type: "text-delta",
- conversationId: convId1,
- turnId: "turn-1",
- delta: "response to first",
- },
- });
-
- store.selectTab(convId1);
- const assistantChunks1 = store.activeChat.chunks.filter(
- (c) => c.role === "assistant" && c.chunk.type === "text",
- );
- expect(assistantChunks1).toHaveLength(1);
- expect((assistantChunks1[0]?.chunk as { type: "text"; text: string }).text).toBe(
- "response to first",
- );
-
- store.selectTab(convId2);
- const assistantChunks2 = store.activeChat.chunks.filter(
- (c) => c.role === "assistant" && c.chunk.type === "text",
- );
- expect(assistantChunks2).toEqual([]);
-
- store.dispose();
- });
-
- it("closing a tab evicts its cache and drops the tab", () => {
- const ws = fakeSocket();
- const storage = createFakeStorage();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- localStorage: storage,
- });
- ws.resolveOpen();
-
- store.send("first");
- const convId = activeConversationId(store);
- expect(store.tabs).toHaveLength(1);
-
- store.closeTab(convId);
-
- expect(store.tabs).toHaveLength(0);
- expect(store.activeConversationId).toBeNull();
-
- store.dispose();
- });
-
- it("tabs persist to the injected storage and restore on a new store", () => {
- const ws = fakeSocket();
- const storage = createFakeStorage();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- localStorage: storage,
- });
- ws.resolveOpen();
-
- store.send("persist me");
- const convId = store.tabs[0]?.conversationId;
- const title = store.tabs[0]?.title;
- expect(convId).toBeDefined();
- expect(title).toBeDefined();
-
- const raw = storage.getItem("dispatch.tabs");
- expect(raw).not.toBeNull();
- const parsed = JSON.parse(raw as string);
- expect(parsed.tabs).toHaveLength(1);
- expect(parsed.tabs[0].conversationId).toBe(convId);
- expect(parsed.tabs[0].title).toBe(title);
-
- const ws2 = fakeSocket();
- const store2 = createAppStore({
- socketFactory: () => ws2,
- fetchImpl: fakeFetchImpl(),
- localStorage: storage,
- });
- ws2.resolveOpen();
-
- expect(store2.tabs).toHaveLength(1);
- expect(store2.tabs[0]?.conversationId).toBe(convId);
- expect(store2.tabs[0]?.title).toBe(title);
- expect(store2.activeConversationId).toBe(convId);
-
- store.dispose();
- store2.dispose();
- });
-
- it("tabs persist to globalThis.localStorage when no storage is injected", () => {
- const realLs = globalThis.localStorage;
- const memLs = createFakeStorage();
- globalThis.localStorage = memLs;
- try {
- const ws1 = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws1,
- fetchImpl: fakeFetchImpl(),
- });
- ws1.resolveOpen();
-
- store.send("persist via default");
- const convId = store.tabs[0]?.conversationId;
- const title = store.tabs[0]?.title;
- expect(convId).toBeDefined();
- expect(title).toBeDefined();
-
- const raw = globalThis.localStorage.getItem("dispatch.tabs");
- expect(raw).not.toBeNull();
- const parsed = JSON.parse(raw as string);
- expect(parsed.tabs).toHaveLength(1);
- expect(parsed.tabs[0].conversationId).toBe(convId);
- expect(parsed.tabs[0].title).toBe(title);
-
- store.dispose();
-
- const ws2 = fakeSocket();
- const store2 = createAppStore({
- socketFactory: () => ws2,
- fetchImpl: fakeFetchImpl(),
- });
- ws2.resolveOpen();
-
- expect(store2.tabs).toHaveLength(1);
- expect(store2.tabs[0]?.conversationId).toBe(convId);
- expect(store2.tabs[0]?.title).toBe(title);
- expect(store2.activeConversationId).toBe(convId);
-
- store2.dispose();
- } finally {
- globalThis.localStorage = realLs;
- }
- });
-
- it("newDraft resets to draft mode", () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- store.send("first");
- expect(store.tabs).toHaveLength(1);
-
- store.newDraft();
- expect(store.activeConversationId).toBeNull();
-
- store.dispose();
- });
-
- it("selectTab switches active tab", () => {
- const ws = fakeSocket();
- const store = createAppStore({
- socketFactory: () => ws,
- fetchImpl: fakeFetchImpl(),
- localStorage: createFakeStorage(),
- });
- ws.resolveOpen();
-
- store.send("first");
- const convId1 = activeConversationId(store);
-
- store.newDraft();
- store.send("second");
- const convId2 = activeConversationId(store);
-
- store.selectTab(convId1);
- expect(store.activeConversationId).toBe(convId1);
-
- store.selectTab(convId2);
- expect(store.activeConversationId).toBe(convId2);
-
- store.dispose();
- });
+ it("starts with empty catalog and no surfaces", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ conversationId: "test-conv",
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ expect(store.catalog).toEqual([]);
+ expect(store.surfaces).toEqual([]);
+ expect(store.lastError).toBeNull();
+
+ store.dispose();
+ });
+
+ it("updates catalog when catalog message arrives", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ conversationId: "test-conv",
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ ws.feedSurfaceMessage({
+ type: "catalog",
+ catalog: [
+ { id: "s1", region: "sidebar", title: "Surface One" },
+ { id: "s2", region: "panel", title: "Surface Two" },
+ ],
+ });
+
+ expect(store.catalog).toHaveLength(2);
+ expect(store.catalog[0]?.id).toBe("s1");
+ expect(store.catalog[1]?.id).toBe("s2");
+
+ store.dispose();
+ });
+
+ it("auto-subscribes to every catalog entry when the catalog arrives", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ conversationId: "test-conv",
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ ws.sent.length = 0;
+ ws.feedSurfaceMessage({
+ type: "catalog",
+ catalog: [
+ { id: "s1", region: "sidebar", title: "Surface One" },
+ { id: "s2", region: "panel", title: "Surface Two" },
+ ],
+ });
+
+ const subscribed = ws.sent
+ .map((s) => JSON.parse(s))
+ .filter((p) => p.type === "subscribe")
+ .map((p) => p.surfaceId);
+ expect(subscribed).toContain("s1");
+ expect(subscribed).toContain("s2");
+
+ store.dispose();
+ });
+
+ it("unsubscribes from entries that vanish from a new catalog", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ conversationId: "test-conv",
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ ws.feedSurfaceMessage({
+ type: "catalog",
+ catalog: [
+ { id: "s1", region: "sidebar", title: "Surface One" },
+ { id: "s2", region: "panel", title: "Surface Two" },
+ ],
+ });
+
+ ws.sent.length = 0;
+ ws.feedSurfaceMessage({
+ type: "catalog",
+ catalog: [{ id: "s1", region: "sidebar", title: "Surface One" }],
+ });
+
+ const unsubscribed = ws.sent
+ .map((s) => JSON.parse(s))
+ .filter((p) => p.type === "unsubscribe")
+ .map((p) => p.surfaceId);
+ expect(unsubscribed).toContain("s2");
+ expect(unsubscribed).not.toContain("s1");
+
+ store.dispose();
+ });
+
+ it("exposes received surface specs via `surfaces`, in catalog order", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ conversationId: "test-conv",
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ ws.feedSurfaceMessage({
+ type: "catalog",
+ catalog: [
+ { id: "s1", region: "sidebar", title: "Surface One" },
+ { id: "s2", region: "panel", title: "Surface Two" },
+ ],
+ });
+
+ // Only s1's spec has arrived: surfaces reflects what's actually received.
+ ws.feedSurfaceMessage({
+ type: "surface",
+ spec: {
+ id: "s1",
+ region: "sidebar",
+ title: "Surface One",
+ fields: [{ kind: "stat", label: "Tokens", value: "1,234" }],
+ },
+ });
+ expect(store.surfaces.map((s) => s.id)).toEqual(["s1"]);
+
+ ws.feedSurfaceMessage({
+ type: "surface",
+ spec: { id: "s2", region: "panel", title: "Surface Two", fields: [] },
+ });
+ // Catalog order preserved (s1 before s2).
+ expect(store.surfaces.map((s) => s.id)).toEqual(["s1", "s2"]);
+ expect(store.surfaces[0]?.fields).toHaveLength(1);
+
+ store.dispose();
+ });
+
+ it("invoke sends an invoke message", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ conversationId: "test-conv",
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ ws.sent.length = 0;
+ store.invoke("s1", "toggle-dark", true);
+
+ const invokeMsg = ws.sent.find((s) => {
+ const parsed = JSON.parse(s);
+ return (
+ parsed.type === "invoke" &&
+ parsed.surfaceId === "s1" &&
+ parsed.actionId === "toggle-dark" &&
+ parsed.payload === true
+ );
+ });
+ expect(invokeMsg).toBeTruthy();
+
+ store.dispose();
+ });
+
+ it("error message updates lastError", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ conversationId: "test-conv",
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ ws.feedSurfaceMessage({
+ type: "error",
+ message: "Something went wrong",
+ });
+
+ expect(store.lastError).not.toBeNull();
+ expect(store.lastError?.message).toBe("Something went wrong");
+
+ store.dispose();
+ });
+
+ it("dispose closes the socket", () => {
+ const ws = fakeSocket();
+ const closeSpy = { called: false };
+ const origClose = ws.close.bind(ws);
+ ws.close = () => {
+ closeSpy.called = true;
+ origClose();
+ };
+
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ conversationId: "test-conv",
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ store.dispose();
+ expect(closeSpy.called).toBe(true);
+ });
+
+ it("exposes activeChat with empty initial messages", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ expect(store.activeChat).toBeDefined();
+ expect(store.activeChat.messages).toEqual([]);
+ expect(store.activeChat.chunks).toEqual([]);
+ expect(store.activeChat.error).toBeNull();
+
+ store.dispose();
+ });
+
+ it("sending a message from draft creates a tab and posts chat.send", () => {
+ const ws = fakeSocket();
+ const storage = createFakeStorage();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: storage,
+ });
+ ws.resolveOpen();
+
+ ws.sent.length = 0;
+ store.send("hello world");
+
+ expect(store.tabs).toHaveLength(1);
+ expect(store.tabs[0]?.title).toBe("hello world");
+ expect(store.activeConversationId).not.toBeNull();
+
+ const msgs = parseSent(ws);
+ const chatSend = msgs.find((m) => (m as { type: string }).type === "chat.send") as
+ | { type: string; conversationId: string; message: string }
+ | undefined;
+ expect(chatSend).toBeTruthy();
+ expect(chatSend?.message).toBe("hello world");
+
+ store.dispose();
+ });
+
+ it("sending from draft forwards staged images on chat.send", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+ ws.sent.length = 0;
+
+ const images = [
+ { url: "data:image/png;base64,AAAA", mimeType: "image/png" },
+ { url: "https://example.com/x.jpg" },
+ ];
+ store.send("describe these", images);
+
+ const msgs = parseSent(ws);
+ const chatSend = msgs.find((m) => (m as { type: string }).type === "chat.send") as
+ | { type: string; message: string; images?: { url: string }[] }
+ | undefined;
+ expect(chatSend).toBeTruthy();
+ expect(chatSend?.images).toEqual(images);
+ // The optimistic echo includes the image chunks.
+ expect(store.activeChat.chunks.some((c) => c.chunk.type === "image")).toBe(true);
+
+ store.dispose();
+ });
+
+ it("an incoming chat.delta renders in the transcript", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ store.send("test");
+ const convId = activeConversationId(store);
+
+ ws.feedServerMessage({
+ type: "chat.delta",
+ event: { type: "turn-start", conversationId: convId, turnId: "turn-1" },
+ });
+
+ ws.feedServerMessage({
+ type: "chat.delta",
+ event: { type: "text-delta", conversationId: convId, turnId: "turn-1", delta: "Hello " },
+ });
+
+ ws.feedServerMessage({
+ type: "chat.delta",
+ event: { type: "text-delta", conversationId: convId, turnId: "turn-1", delta: "world" },
+ });
+
+ expect(store.activeChat.chunks.length).toBeGreaterThan(0);
+ const assistantChunks = store.activeChat.chunks.filter(
+ (c) => c.role === "assistant" && c.chunk.type === "text",
+ );
+ expect(assistantChunks).toHaveLength(1);
+ expect((assistantChunks[0]?.chunk as { type: "text"; text: string }).text).toBe("Hello world");
+
+ store.dispose();
+ });
+
+ it("chat.error sets the chat error", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ store.send("test");
+ const convId = activeConversationId(store);
+
+ ws.feedServerMessage({
+ type: "chat.error",
+ conversationId: convId,
+ message: "bad request",
+ });
+
+ expect(store.activeChat.error).toBe("bad request");
+
+ store.dispose();
+ });
+
+ it("turn-sealed triggers a history fetch and synced chunks render", async () => {
+ const fetchedUrls: string[] = [];
+ const historyResponse: ConversationHistoryResponse = {
+ chunks: [
+ { seq: 1, role: "user", chunk: { type: "text", text: "hi" } },
+ { seq: 2, role: "assistant", chunk: { type: "text", text: "hello!" } },
+ ],
+ latestSeq: 2,
+ };
+ const fetchImpl: typeof fetch = async (input: string | URL | Request): Promise<Response> => {
+ const url = typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ fetchedUrls.push(url);
+ if (url.endsWith("/models")) {
+ return new Response(JSON.stringify({ models: ["opencode/deepseek-v4-flash"] }), {
+ status: 200,
+ });
+ }
+ return new Response(JSON.stringify(historyResponse), { status: 200 });
+ };
+
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl,
+ httpUrl: "http://localhost:24203",
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ store.send("hi");
+ const convId = activeConversationId(store);
+
+ ws.feedServerMessage({
+ type: "chat.delta",
+ event: { type: "turn-start", conversationId: convId, turnId: "turn-1" },
+ });
+
+ ws.feedServerMessage({
+ type: "chat.delta",
+ event: { type: "turn-sealed", conversationId: convId, turnId: "turn-1" },
+ });
+
+ // `turn-sealed` triggers an async `syncTail` (cache.sinceSeq → historySync
+ // → cache.commit → applyHistory). Poll for the side-effect rather than
+ // guessing a fixed delay — under suite load a fixed `setTimeout` raced the
+ // fetch chain and flaked here.
+ await vi.waitFor(() => {
+ expect(fetchedUrls.some((u) => u.includes(`/conversations/${convId}?sinceSeq=`))).toBe(true);
+ });
+
+ await vi.waitFor(() => {
+ expect(store.activeChat.chunks.length).toBeGreaterThan(0);
+ });
+
+ store.dispose();
+ });
+
+ it("fetches and exposes the model catalog", async () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl({
+ models: ["opencode/deepseek-v4-flash", "openai/gpt-4o", "anthropic/claude-3"],
+ }),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ await new Promise((r) => setTimeout(r, 50));
+
+ expect(store.models).toEqual([
+ "opencode/deepseek-v4-flash",
+ "openai/gpt-4o",
+ "anthropic/claude-3",
+ ]);
+
+ store.dispose();
+ });
+
+ it("default model is flash", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ expect(store.activeModel).toBe("opencode/deepseek-v4-flash");
+
+ store.dispose();
+ });
+
+ it("draft: sending the first message creates a tab titled from the message", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ expect(store.tabs).toHaveLength(0);
+ expect(store.activeConversationId).toBeNull();
+
+ store.send("What is the meaning of life?");
+
+ expect(store.tabs).toHaveLength(1);
+ expect(store.tabs[0]?.title).toBe("What is the meaning of life?");
+ expect(store.activeConversationId).toBe(store.tabs[0]?.conversationId);
+
+ store.dispose();
+ });
+
+ it("selecting a model persists it to the backend", () => {
+ const ws = fakeSocket();
+ const fetchImpl = fakeFetchImpl();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl,
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ store.send("hello");
+ store.selectModel("openai/gpt-4o");
+
+ const put = vi.fn().mockResolvedValue(
+ new Response(JSON.stringify({ conversationId: "ignored", model: "openai/gpt-4o" }), {
+ status: 200,
+ }),
+ );
+ const capturingStore = createAppStore({
+ socketFactory: () => fakeSocket(),
+ fetchImpl: async (input, init) => {
+ const url =
+ typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ if (init?.method === "PUT" && url.endsWith("/model")) {
+ put(url, init);
+ }
+ return fetchImpl(input, init);
+ },
+ localStorage: createFakeStorage(),
+ });
+ capturingStore.send("hello");
+ capturingStore.selectModel("openai/gpt-4o");
+
+ expect(put).toHaveBeenCalledOnce();
+ const [callUrl, callInit] = put.mock.calls[0] as [string, RequestInit];
+ expect(callUrl.endsWith("/model")).toBe(true);
+ expect(JSON.parse(callInit.body as string)).toEqual({ model: "openai/gpt-4o" });
+
+ store.dispose();
+ capturingStore.dispose();
+ });
+
+ it("focuses a conversation with a persisted model", async () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl({ model: "openai/gpt-4o" }),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ store.send("first message");
+
+ // New tab opens with the default model until the persisted-model fetch resolves.
+ expect(store.activeModel).toBe("opencode/deepseek-v4-flash");
+
+ // Wait for the persisted model fetch to resolve.
+ await vi.waitFor(() => expect(store.activeModel).toBe("openai/gpt-4o"));
+ expect(store.tabs[0]?.model).toBe("openai/gpt-4o");
+
+ store.dispose();
+ });
+
+ it("chat.delta routes to the matching tab only", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ store.send("first message");
+ const convId1 = activeConversationId(store);
+
+ store.newDraft();
+ store.send("second message");
+ const convId2 = activeConversationId(store);
+
+ expect(convId1).not.toBe(convId2);
+
+ ws.feedServerMessage({
+ type: "chat.delta",
+ event: { type: "turn-start", conversationId: convId1, turnId: "turn-1" },
+ });
+ ws.feedServerMessage({
+ type: "chat.delta",
+ event: {
+ type: "text-delta",
+ conversationId: convId1,
+ turnId: "turn-1",
+ delta: "response to first",
+ },
+ });
+
+ store.selectTab(convId1);
+ const assistantChunks1 = store.activeChat.chunks.filter(
+ (c) => c.role === "assistant" && c.chunk.type === "text",
+ );
+ expect(assistantChunks1).toHaveLength(1);
+ expect((assistantChunks1[0]?.chunk as { type: "text"; text: string }).text).toBe(
+ "response to first",
+ );
+
+ store.selectTab(convId2);
+ const assistantChunks2 = store.activeChat.chunks.filter(
+ (c) => c.role === "assistant" && c.chunk.type === "text",
+ );
+ expect(assistantChunks2).toEqual([]);
+
+ store.dispose();
+ });
+
+ it("closing a tab evicts its cache and drops the tab", () => {
+ const ws = fakeSocket();
+ const storage = createFakeStorage();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: storage,
+ });
+ ws.resolveOpen();
+
+ store.send("first");
+ const convId = activeConversationId(store);
+ expect(store.tabs).toHaveLength(1);
+
+ store.closeTab(convId);
+
+ expect(store.tabs).toHaveLength(0);
+ expect(store.activeConversationId).toBeNull();
+
+ store.dispose();
+ });
+
+ it("closing a tab POSTs /conversations/:id/close (abort turn + stop warming)", async () => {
+ const calls: { url: string; method: string }[] = [];
+ const base = fakeFetchImpl();
+ const fetchImpl: typeof fetch = async (input, init) => {
+ const url = typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ calls.push({ url, method: init?.method ?? "GET" });
+ if (url.endsWith("/close")) {
+ return new Response(
+ JSON.stringify({ conversationId: url.split("/").at(-2), abortedTurn: false }),
+ { status: 200 },
+ );
+ }
+ return base(input, init);
+ };
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl,
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ store.send("first");
+ const convId = activeConversationId(store);
+ store.closeTab(convId);
+ await Promise.resolve(); // flush the fire-and-forget fetch
+
+ const close = calls.find((c) => c.url.endsWith(`/conversations/${convId}/close`));
+ expect(close).toBeDefined();
+ expect(close?.method).toBe("POST");
+
+ store.dispose();
+ });
+
+ it("seeds reasoningEffort from GET /conversations/:id/reasoning-effort (null = never set)", async () => {
+ const base = fakeFetchImpl();
+ const fetchImpl: typeof fetch = async (input, init) => {
+ const url = typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ if (url.endsWith("/reasoning-effort")) {
+ return new Response(JSON.stringify({ conversationId: "x", reasoningEffort: "xhigh" }), {
+ status: 200,
+ });
+ }
+ return base(input, init);
+ };
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl,
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ await vi.waitFor(() => {
+ expect(store.reasoningEffort).toBe("xhigh");
+ });
+
+ store.dispose();
+ });
+
+ it("setReasoningEffort PUTs the level and updates local state from the echo", async () => {
+ const calls: { url: string; method: string; body: string | undefined }[] = [];
+ const base = fakeFetchImpl();
+ const fetchImpl: typeof fetch = async (input, init) => {
+ const url = typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ calls.push({ url, method: init?.method ?? "GET", body: init?.body as string | undefined });
+ if (url.endsWith("/reasoning-effort") && init?.method === "PUT") {
+ const sent = JSON.parse(init.body as string) as { reasoningEffort: string };
+ return new Response(
+ JSON.stringify({ conversationId: "x", reasoningEffort: sent.reasoningEffort }),
+ { status: 200 },
+ );
+ }
+ if (url.endsWith("/reasoning-effort")) {
+ return new Response(JSON.stringify({ conversationId: "x", reasoningEffort: null }), {
+ status: 200,
+ });
+ }
+ return base(input, init);
+ };
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl,
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ const result = await store.setReasoningEffort("max");
+ expect(result).toEqual({ ok: true, reasoningEffort: "max" });
+ expect(store.reasoningEffort).toBe("max");
+
+ const put = calls.find((c) => c.method === "PUT" && c.url.endsWith("/reasoning-effort"));
+ expect(put).toBeDefined();
+ // The PUT targets the workspace conversation (draft id works too) and
+ // carries exactly the SetReasoningEffortRequest body.
+ expect(put?.url).toContain(`/conversations/${store.currentConversationId}/`);
+ expect(JSON.parse(put?.body ?? "{}")).toEqual({ reasoningEffort: "max" });
+
+ store.dispose();
+ });
+
+ it("setReasoningEffort surfaces a 400 error and leaves state unchanged", async () => {
+ const base = fakeFetchImpl();
+ const fetchImpl: typeof fetch = async (input, init) => {
+ const url = typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ if (url.endsWith("/reasoning-effort") && init?.method === "PUT") {
+ return new Response(JSON.stringify({ error: "bad level" }), { status: 400 });
+ }
+ if (url.endsWith("/reasoning-effort")) {
+ return new Response(JSON.stringify({ conversationId: "x", reasoningEffort: null }), {
+ status: 200,
+ });
+ }
+ return base(input, init);
+ };
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl,
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ const result = await store.setReasoningEffort("max");
+ expect(result).toEqual({ ok: false, error: "bad level" });
+ expect(store.reasoningEffort).toBeNull();
+
+ store.dispose();
+ });
+
+ it("does NOT re-scope a scope:'global' surface on conversation switch (no churn)", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ ws.feedSurfaceMessage({
+ type: "catalog",
+ catalog: [
+ { id: "s-global", region: "side", title: "Global", scope: "global" },
+ { id: "s-conv", region: "side", title: "Scoped", scope: "conversation" },
+ ],
+ });
+
+ ws.sent.length = 0;
+ store.send("promote the draft"); // draft → real conversation: surfaces re-scope
+ const convId = activeConversationId(store);
+
+ const surfaceMsgs = parseSent(ws).filter(
+ (p): p is { type: string; surfaceId: string; conversationId?: string } =>
+ (p as { type: string }).type === "subscribe" ||
+ (p as { type: string }).type === "unsubscribe",
+ );
+ // The conversation-scoped surface re-scopes: unsubscribe old + subscribe new id.
+ expect(
+ surfaceMsgs.some(
+ (m) => m.type === "subscribe" && m.surfaceId === "s-conv" && m.conversationId === convId,
+ ),
+ ).toBe(true);
+ // The global surface is untouched — no redundant unsubscribe+subscribe round trip.
+ expect(surfaceMsgs.some((m) => m.surfaceId === "s-global")).toBe(false);
+
+ store.dispose();
+ });
+
+ it("tabs persist to the injected storage and restore on a new store", () => {
+ const ws = fakeSocket();
+ const storage = createFakeStorage();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: storage,
+ });
+ ws.resolveOpen();
+
+ store.send("persist me");
+ const convId = store.tabs[0]?.conversationId;
+ const title = store.tabs[0]?.title;
+ expect(convId).toBeDefined();
+ expect(title).toBeDefined();
+
+ const raw = storage.getItem("dispatch.tabs");
+ expect(raw).not.toBeNull();
+ const parsed = JSON.parse(raw as string);
+ expect(parsed.tabs).toHaveLength(1);
+ expect(parsed.tabs[0].conversationId).toBe(convId);
+ expect(parsed.tabs[0].title).toBe(title);
+
+ const ws2 = fakeSocket();
+ const store2 = createAppStore({
+ socketFactory: () => ws2,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: storage,
+ });
+ ws2.resolveOpen();
+
+ expect(store2.tabs).toHaveLength(1);
+ expect(store2.tabs[0]?.conversationId).toBe(convId);
+ expect(store2.tabs[0]?.title).toBe(title);
+ expect(store2.activeConversationId).toBe(convId);
+
+ store.dispose();
+ store2.dispose();
+ });
+
+ it("tabs persist to globalThis.localStorage when no storage is injected", () => {
+ const realLs = globalThis.localStorage;
+ const memLs = createFakeStorage();
+ globalThis.localStorage = memLs;
+ try {
+ const ws1 = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws1,
+ fetchImpl: fakeFetchImpl(),
+ });
+ ws1.resolveOpen();
+
+ store.send("persist via default");
+ const convId = store.tabs[0]?.conversationId;
+ const title = store.tabs[0]?.title;
+ expect(convId).toBeDefined();
+ expect(title).toBeDefined();
+
+ const raw = globalThis.localStorage.getItem("dispatch.tabs");
+ expect(raw).not.toBeNull();
+ const parsed = JSON.parse(raw as string);
+ expect(parsed.tabs).toHaveLength(1);
+ expect(parsed.tabs[0].conversationId).toBe(convId);
+ expect(parsed.tabs[0].title).toBe(title);
+
+ store.dispose();
+
+ const ws2 = fakeSocket();
+ const store2 = createAppStore({
+ socketFactory: () => ws2,
+ fetchImpl: fakeFetchImpl(),
+ });
+ ws2.resolveOpen();
+
+ expect(store2.tabs).toHaveLength(1);
+ expect(store2.tabs[0]?.conversationId).toBe(convId);
+ expect(store2.tabs[0]?.title).toBe(title);
+ expect(store2.activeConversationId).toBe(convId);
+
+ store2.dispose();
+ } finally {
+ globalThis.localStorage = realLs;
+ }
+ });
+
+ it("newDraft resets to draft mode", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ store.send("first");
+ expect(store.tabs).toHaveLength(1);
+
+ store.newDraft();
+ expect(store.activeConversationId).toBeNull();
+
+ store.dispose();
+ });
+
+ it("selectTab switches active tab", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ store.send("first");
+ const convId1 = activeConversationId(store);
+
+ store.newDraft();
+ store.send("second");
+ const convId2 = activeConversationId(store);
+
+ store.selectTab(convId1);
+ expect(store.activeConversationId).toBe(convId1);
+
+ store.selectTab(convId2);
+ expect(store.activeConversationId).toBe(convId2);
+
+ store.dispose();
+ });
+
+ it("subscribes to chat for each restored tab on page load", () => {
+ const storage = createFakeStorage();
+ // First session: create a tab, then dispose.
+ const ws1 = fakeSocket();
+ const store1 = createAppStore({
+ socketFactory: () => ws1,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: storage,
+ });
+ ws1.resolveOpen();
+ store1.send("persist me");
+ const convId = store1.tabs[0]?.conversationId as string;
+ expect(convId).toBeDefined();
+ store1.dispose();
+
+ // Second session: the restored tab must be re-subscribed for live turns.
+ const ws2 = fakeSocket();
+ const store2 = createAppStore({
+ socketFactory: () => ws2,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: storage,
+ });
+ ws2.resolveOpen(); // flush the queued chat.subscribe
+
+ const subscribed = parseSent(ws2)
+ .filter((p) => (p as { type: string }).type === "chat.subscribe")
+ .map((p) => (p as { conversationId: string }).conversationId);
+ expect(subscribed).toContain(convId);
+
+ store2.dispose();
+ });
+
+ it("unsubscribes from chat when a tab is closed", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ store.send("first");
+ const convId = activeConversationId(store);
+
+ ws.sent.length = 0;
+ store.closeTab(convId);
+
+ const unsubscribed = parseSent(ws)
+ .filter((p) => (p as { type: string }).type === "chat.unsubscribe")
+ .map((p) => (p as { conversationId: string }).conversationId);
+ expect(unsubscribed).toContain(convId);
+
+ store.dispose();
+ });
+
+ it("re-subscribes chat (and resyncs) for every open conversation on reconnect", async () => {
+ const fetchedUrls: string[] = [];
+ const fetchImpl: typeof fetch = async (input: string | URL | Request): Promise<Response> => {
+ const url = typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ fetchedUrls.push(url);
+ if (url.endsWith("/models")) {
+ return new Response(JSON.stringify({ models: ["opencode/deepseek-v4-flash"] }), {
+ status: 200,
+ });
+ }
+ return new Response(JSON.stringify({ chunks: [], latestSeq: 0 }), { status: 200 });
+ };
+
+ const ws = reconnectableSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl,
+ httpUrl: "http://localhost:24203",
+ localStorage: createFakeStorage(),
+ });
+ ws.open();
+
+ store.send("hi");
+ const convId = activeConversationId(store);
+
+ // Drop the connection, wait past the reconnect backoff, then re-open.
+ ws.sent.length = 0;
+ fetchedUrls.length = 0;
+ ws.closeRemote();
+ await new Promise((r) => setTimeout(r, 800));
+ ws.open(); // reconnect → onReopen
+
+ const subscribed = parseSent(ws)
+ .filter((p) => (p as { type: string }).type === "chat.subscribe")
+ .map((p) => (p as { conversationId: string }).conversationId);
+ expect(subscribed).toContain(convId);
+
+ // resync() pulled the tail from history for the reconnected conversation.
+ await vi.waitFor(() => {
+ expect(fetchedUrls.some((u) => u.includes(`/conversations/${convId}?sinceSeq=`))).toBe(true);
+ });
+
+ store.dispose();
+ });
+
+ // ── Heartbeat (workspace-scoped config + runs + watch) ───────────────────────
+ //
+ // The heartbeat API is a plain REST surface (not a transport-contract type),
+ // so these tests fake the four endpoints + verify the store coerces the
+ // untyped JSON and routes live deltas to a watch store (the run-chat modal).
+
+ function heartbeatFetchImpl(opts?: {
+ config?: Record<string, unknown>;
+ runs?: Record<string, unknown>;
+ }): typeof fetch {
+ const base = fakeFetchImpl();
+ const config = opts?.config ?? {
+ enabled: true,
+ systemPrompt: "sys",
+ taskPrompt: "task",
+ intervalMinutes: 15,
+ model: "openai/gpt-4o",
+ reasoningEffort: "medium",
+ };
+ const runs = opts?.runs ?? {
+ runs: [
+ {
+ id: "run-1",
+ conversationId: "hb-conv-1",
+ triggeredAt: "2026-06-25T10:00:00Z",
+ status: "running",
+ },
+ ],
+ };
+ return async (input, init) => {
+ const url = typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ const method = init?.method ?? "GET";
+ if (url.includes("/heartbeat/runs") && method === "GET") {
+ return new Response(JSON.stringify(runs), { status: 200 });
+ }
+ if (url.includes("/heartbeat/runs/") && method === "POST") {
+ return new Response(JSON.stringify({ ok: true }), { status: 200 });
+ }
+ if (url.endsWith("/heartbeat") && method === "GET") {
+ return new Response(JSON.stringify(config), { status: 200 });
+ }
+ if (url.endsWith("/heartbeat") && method === "PUT") {
+ // Echo the patch merged onto the stored config so the round-trip is observable.
+ const patch = init?.body ? JSON.parse(init.body as string) : {};
+ return new Response(JSON.stringify({ ...config, ...patch }), {
+ status: 200,
+ });
+ }
+ if (url.includes("/heartbeat")) {
+ return new Response(JSON.stringify(config), { status: 200 });
+ }
+ return base(input, init);
+ };
+ }
+
+ it("heartbeatConfig loads + coerces the workspace config", async () => {
+ const store = createAppStore({
+ socketFactory: () => fakeSocket(),
+ fetchImpl: heartbeatFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ const result = await store.heartbeatConfig();
+ expect(result.ok).toBe(true);
+ if (!result.ok) throw new Error("unreachable");
+ expect(result.config).toEqual({
+ enabled: true,
+ systemPrompt: "sys",
+ taskPrompt: "task",
+ intervalMinutes: 15,
+ model: "openai/gpt-4o",
+ reasoningEffort: "medium",
+ });
+ store.dispose();
+ });
+
+ it("heartbeatConfig surfaces an HTTP error", async () => {
+ const store = createAppStore({
+ socketFactory: () => fakeSocket(),
+ fetchImpl: async (input) => {
+ const url =
+ typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ if (url.endsWith("/heartbeat"))
+ return new Response(JSON.stringify({ error: "nope" }), { status: 500 });
+ return fakeFetchImpl()(input);
+ },
+ localStorage: createFakeStorage(),
+ });
+ const result = await store.heartbeatConfig();
+ expect(result.ok).toBe(false);
+ if (result.ok) throw new Error("unreachable");
+ expect(result.error).toContain("nope");
+ store.dispose();
+ });
+
+ it("setHeartbeatConfig PUTs a patch and returns the merged config", async () => {
+ const calls: { url: string; method: string; body: unknown }[] = [];
+ const store = createAppStore({
+ socketFactory: () => fakeSocket(),
+ fetchImpl: async (input, init) => {
+ const url =
+ typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ const method = init?.method ?? "GET";
+ if (url.endsWith("/heartbeat") && method === "PUT") {
+ calls.push({ url, method, body: JSON.parse(init?.body as string) });
+ }
+ return heartbeatFetchImpl()(input, init);
+ },
+ localStorage: createFakeStorage(),
+ });
+ const result = await store.setHeartbeatConfig({ enabled: false, intervalMinutes: 9999 });
+ expect(result.ok).toBe(true);
+ expect(calls).toHaveLength(1);
+ expect(calls[0]?.body).toEqual({ enabled: false, intervalMinutes: 9999 });
+ // The store normalizes the echoed response (interval clamped to the 1–1440 range).
+ if (!result.ok) throw new Error("unreachable");
+ expect(result.config.intervalMinutes).toBe(1440);
+ store.dispose();
+ });
+
+ it("heartbeatRuns loads + coerces the run list", async () => {
+ const store = createAppStore({
+ socketFactory: () => fakeSocket(),
+ fetchImpl: heartbeatFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ const result = await store.heartbeatRuns();
+ expect(result.ok).toBe(true);
+ if (!result.ok) throw new Error("unreachable");
+ expect(result.runs).toHaveLength(1);
+ expect(result.runs[0]).toMatchObject({
+ id: "run-1",
+ conversationId: "hb-conv-1",
+ status: "running",
+ });
+ store.dispose();
+ });
+
+ it("stopHeartbeatRun POSTs the stop endpoint", async () => {
+ const calls: { url: string; method: string }[] = [];
+ const store = createAppStore({
+ socketFactory: () => fakeSocket(),
+ fetchImpl: async (input, init) => {
+ const url =
+ typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ const method = init?.method ?? "GET";
+ if (url.includes("/heartbeat/runs/") && method === "POST") {
+ calls.push({ url, method });
+ }
+ return heartbeatFetchImpl()(input, init);
+ },
+ localStorage: createFakeStorage(),
+ });
+ const result = await store.stopHeartbeatRun("run-1");
+ expect(result.ok).toBe(true);
+ expect(calls).toHaveLength(1);
+ expect(calls[0]?.url).toContain("/heartbeat/runs/run-1/stop");
+ expect(calls[0]?.method).toBe("POST");
+ store.dispose();
+ });
+
+ it("watchConversation subscribes + routes live deltas to the watch store", async () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ // A heartbeat run's conversation that is NOT an open tab — watch it.
+ const watch = store.watchConversation("hb-conv-watch");
+ // A chat.subscribe was sent for the watched conversation.
+ const subscribed = parseSent(ws).some(
+ (p) =>
+ (p as { type: string; conversationId?: string }).type === "chat.subscribe" &&
+ (p as { conversationId?: string }).conversationId === "hb-conv-watch",
+ );
+ expect(subscribed).toBe(true);
+
+ // Feed a live delta for the watched conversation → the watch store folds it.
+ ws.feedServerMessage({
+ type: "chat.delta",
+ event: { type: "turn-start", conversationId: "hb-conv-watch", turnId: "t1" },
+ });
+ ws.feedServerMessage({
+ type: "chat.delta",
+ event: {
+ type: "text-delta",
+ conversationId: "hb-conv-watch",
+ turnId: "t1",
+ delta: "hello from heartbeat",
+ },
+ });
+
+ await vi.waitFor(() => {
+ const text = watch.chunks.find((c) => c.role === "assistant" && c.chunk.type === "text");
+ expect((text?.chunk as { type: "text"; text: string } | undefined)?.text).toBe(
+ "hello from heartbeat",
+ );
+ });
+ expect(watch.generating).toBe(true);
+
+ // Unwatch → unsubscribes (a chat.unsubscribe for this conversation is sent).
+ ws.sent.length = 0;
+ store.unwatchConversation("hb-conv-watch");
+ const unsubscribed = parseSent(ws).some(
+ (p) =>
+ (p as { type: string; conversationId?: string }).type === "chat.unsubscribe" &&
+ (p as { conversationId?: string }).conversationId === "hb-conv-watch",
+ );
+ expect(unsubscribed).toBe(true);
+
+ store.dispose();
+ });
+
+ it("watchConversation reuses an open tab's store; unwatch is a no-op for it", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ store.send("first");
+ const convId = activeConversationId(store);
+ // The conversation is an open tab (already subscribed on send). Watching it
+ // must REUSE the tab's store + subscription — so no NEW chat.subscribe is
+ // sent (the watch path only subscribes when it creates an ephemeral store).
+ // (Note: `store.activeChat` is a Svelte `$state` PROXY of the tab store, so a
+ // reference-equality check is meaningless here — we assert behavior instead.)
+ ws.sent.length = 0;
+ store.watchConversation(convId);
+ const subscribed = parseSent(ws).some(
+ (p) =>
+ (p as { type: string; conversationId?: string }).type === "chat.subscribe" &&
+ (p as { conversationId?: string }).conversationId === convId,
+ );
+ expect(subscribed).toBe(false);
+
+ // Unwatching a tab conversation does NOT unsubscribe (the tab keeps its stream).
+ ws.sent.length = 0;
+ store.unwatchConversation(convId);
+ const unsubscribed = parseSent(ws).some(
+ (p) => (p as { type: string }).type === "chat.unsubscribe",
+ );
+ expect(unsubscribed).toBe(false);
+
+ store.dispose();
+ });
+
+ // ── Concurrency (per-provider limits + live status; GLOBAL REST surface) ─────
+ //
+ // The concurrency API is a plain REST surface under /concurrency (provided by
+ // the `concurrency` extension). These tests fake all five endpoints + verify
+ // the store coerces the untyped JSON and routes the right method/URL.
+
+ function concurrencyFetchImpl(opts?: {
+ limits?: Record<string, unknown>;
+ limit?: Record<string, unknown>;
+ status?: Record<string, unknown>;
+ }): typeof fetch {
+ const base = fakeFetchImpl();
+ const limits = opts?.limits ?? {
+ limits: [
+ { providerId: "umans", limit: 4 },
+ { providerId: "openai-compat", limit: 5 },
+ ],
+ };
+ const limit = opts?.limit ?? { providerId: "umans", limit: 4 };
+ const status = opts?.status ?? {
+ providers: [
+ { providerId: "umans", limit: 4, inFlight: 2, queued: 1, paused: false },
+ {
+ providerId: "openai-compat",
+ limit: 5,
+ inFlight: 5,
+ queued: 3,
+ paused: true,
+ pausedUntil: 1_719_408_000_000,
+ },
+ ],
+ };
+ return async (input, init) => {
+ const url = typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ const method = init?.method ?? "GET";
+ if (url.endsWith("/concurrency/status") && method === "GET") {
+ return new Response(JSON.stringify(status), { status: 200 });
+ }
+ if (url.endsWith("/concurrency/limits") && method === "GET") {
+ return new Response(JSON.stringify(limits), { status: 200 });
+ }
+ if (url.includes("/concurrency/limits/") && method === "GET") {
+ return new Response(JSON.stringify(limit), { status: 200 });
+ }
+ if (url.includes("/concurrency/limits/") && method === "PUT") {
+ const seg = url.slice(
+ url.lastIndexOf("/concurrency/limits/") + "/concurrency/limits/".length,
+ );
+ const body = init?.body ? JSON.parse(init.body as string) : {};
+ return new Response(JSON.stringify({ providerId: seg, ...body }), { status: 200 });
+ }
+ if (url.includes("/concurrency/limits/") && method === "DELETE") {
+ return new Response(JSON.stringify({ ok: true, providerId: "umans" }), { status: 200 });
+ }
+ if (url.includes("/concurrency/cooldown/") && method === "GET") {
+ return new Response(JSON.stringify({ providerId: "umans", cooldownMs: 350 }), {
+ status: 200,
+ });
+ }
+ if (url.includes("/concurrency/cooldown/") && method === "PUT") {
+ const seg = url.slice(
+ url.lastIndexOf("/concurrency/cooldown/") + "/concurrency/cooldown/".length,
+ );
+ const body = init?.body ? JSON.parse(init.body as string) : {};
+ return new Response(JSON.stringify({ providerId: seg, cooldownMs: body.cooldownMs ?? 0 }), {
+ status: 200,
+ });
+ }
+ return base(input, init);
+ };
+ }
+
+ it("concurrencyLimits loads + coerces the limits list", async () => {
+ const store = createAppStore({
+ socketFactory: () => fakeSocket(),
+ fetchImpl: concurrencyFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ const result = await store.concurrencyLimits();
+ expect(result.ok).toBe(true);
+ if (!result.ok) throw new Error("unreachable");
+ expect(result.limits).toEqual([
+ { providerId: "umans", limit: 4 },
+ { providerId: "openai-compat", limit: 5 },
+ ]);
+ store.dispose();
+ });
+
+ it("concurrencyLimits tolerates a malformed/empty body (extension not loaded)", async () => {
+ const store = createAppStore({
+ socketFactory: () => fakeSocket(),
+ fetchImpl: concurrencyFetchImpl({ limits: {} }),
+ localStorage: createFakeStorage(),
+ });
+ const result = await store.concurrencyLimits();
+ expect(result.ok).toBe(true);
+ if (!result.ok) throw new Error("unreachable");
+ expect(result.limits).toEqual([]);
+ store.dispose();
+ });
+
+ it("concurrencyLimits surfaces an HTTP error", async () => {
+ const store = createAppStore({
+ socketFactory: () => fakeSocket(),
+ fetchImpl: async (input) => {
+ const url =
+ typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ if (url.endsWith("/concurrency/limits"))
+ return new Response(JSON.stringify({ error: "Concurrency service not available" }), {
+ status: 503,
+ });
+ return fakeFetchImpl()(input);
+ },
+ localStorage: createFakeStorage(),
+ });
+ const result = await store.concurrencyLimits();
+ expect(result.ok).toBe(false);
+ if (result.ok) throw new Error("unreachable");
+ expect(result.error).toContain("Concurrency service not available");
+ store.dispose();
+ });
+
+ it("getConcurrencyLimit loads one provider's limit", async () => {
+ const store = createAppStore({
+ socketFactory: () => fakeSocket(),
+ fetchImpl: concurrencyFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ const result = await store.getConcurrencyLimit("umans");
+ expect(result.ok).toBe(true);
+ if (!result.ok) throw new Error("unreachable");
+ expect(result.providerId).toBe("umans");
+ expect(result.limit).toBe(4);
+ store.dispose();
+ });
+
+ it("getConcurrencyLimit surfaces a 404 (not configured)", async () => {
+ const store = createAppStore({
+ socketFactory: () => fakeSocket(),
+ fetchImpl: async (input, init) => {
+ const url =
+ typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ const method = init?.method ?? "GET";
+ if (url.includes("/concurrency/limits/") && method === "GET")
+ return new Response(
+ JSON.stringify({ error: "No concurrency limit configured for this provider" }),
+ { status: 404 },
+ );
+ return fakeFetchImpl()(input);
+ },
+ localStorage: createFakeStorage(),
+ });
+ const result = await store.getConcurrencyLimit("anthropic");
+ expect(result.ok).toBe(false);
+ if (result.ok) throw new Error("unreachable");
+ expect(result.error).toContain("No concurrency limit configured");
+ store.dispose();
+ });
+
+ it("setConcurrencyLimit PUTs { limit } to the provider URL and returns the echoed limit", async () => {
+ const calls: { url: string; method: string; body: unknown }[] = [];
+ const store = createAppStore({
+ socketFactory: () => fakeSocket(),
+ fetchImpl: async (input, init) => {
+ const url =
+ typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ const method = init?.method ?? "GET";
+ if (url.includes("/concurrency/limits/") && method === "PUT") {
+ calls.push({ url, method, body: JSON.parse(init?.body as string) });
+ }
+ return concurrencyFetchImpl()(input, init);
+ },
+ localStorage: createFakeStorage(),
+ });
+ const result = await store.setConcurrencyLimit("anthropic", 8);
+ expect(result.ok).toBe(true);
+ expect(calls).toHaveLength(1);
+ expect(calls[0]?.method).toBe("PUT");
+ expect(calls[0]?.url).toContain("/concurrency/limits/anthropic");
+ expect(calls[0]?.body).toEqual({ limit: 8 });
+ if (!result.ok) throw new Error("unreachable");
+ expect(result.providerId).toBe("anthropic"); // echoed by the fake
+ expect(result.limit).toBe(8);
+ store.dispose();
+ });
+
+ it("setConcurrencyLimit surfaces a 400 (non-positive body)", async () => {
+ const store = createAppStore({
+ socketFactory: () => fakeSocket(),
+ fetchImpl: async (input, init) => {
+ const url =
+ typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ if (url.includes("/concurrency/limits/") && init?.method === "PUT")
+ return new Response(
+ JSON.stringify({ error: "Body must be { limit: <positive integer> }" }),
+ {
+ status: 400,
+ },
+ );
+ return fakeFetchImpl()(input);
+ },
+ localStorage: createFakeStorage(),
+ });
+ const result = await store.setConcurrencyLimit("umans", 0);
+ expect(result.ok).toBe(false);
+ if (result.ok) throw new Error("unreachable");
+ expect(result.error).toContain("Body must be");
+ store.dispose();
+ });
+
+ it("deleteConcurrencyLimit DELETEs the provider URL and returns ok", async () => {
+ const calls: { url: string; method: string }[] = [];
+ const store = createAppStore({
+ socketFactory: () => fakeSocket(),
+ fetchImpl: async (input, init) => {
+ const url =
+ typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ const method = init?.method ?? "GET";
+ if (url.includes("/concurrency/limits/") && method === "DELETE") {
+ calls.push({ url, method });
+ }
+ return concurrencyFetchImpl()(input, init);
+ },
+ localStorage: createFakeStorage(),
+ });
+ const result = await store.deleteConcurrencyLimit("umans");
+ expect(result.ok).toBe(true);
+ expect(calls).toHaveLength(1);
+ expect(calls[0]?.method).toBe("DELETE");
+ expect(calls[0]?.url).toContain("/concurrency/limits/umans");
+ if (!result.ok) throw new Error("unreachable");
+ expect(result.providerId).toBe("umans");
+ store.dispose();
+ });
+
+ it("concurrencyStatus loads + coerces the status list (incl. pausedUntil)", async () => {
+ const store = createAppStore({
+ socketFactory: () => fakeSocket(),
+ fetchImpl: concurrencyFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ const result = await store.concurrencyStatus();
+ expect(result.ok).toBe(true);
+ if (!result.ok) throw new Error("unreachable");
+ expect(result.providers).toHaveLength(2);
+ expect(result.providers[0]).toEqual({
+ providerId: "umans",
+ limit: 4,
+ inFlight: 2,
+ queued: 1,
+ paused: false,
+ cooldownMs: 350,
+ autoReduced: false,
+ });
+ expect(result.providers[1]).toMatchObject({
+ providerId: "openai-compat",
+ paused: true,
+ pausedUntil: 1_719_408_000_000,
+ cooldownMs: 350,
+ autoReduced: false,
+ });
+ store.dispose();
+ });
+
+ it("concurrencyStatus tolerates a malformed body (extension not loaded)", async () => {
+ const store = createAppStore({
+ socketFactory: () => fakeSocket(),
+ fetchImpl: concurrencyFetchImpl({ status: {} }),
+ localStorage: createFakeStorage(),
+ });
+ const result = await store.concurrencyStatus();
+ expect(result.ok).toBe(true);
+ if (!result.ok) throw new Error("unreachable");
+ expect(result.providers).toEqual([]);
+ store.dispose();
+ });
+
+ it("getConcurrencyCooldown loads + coerces the cooldown", async () => {
+ const store = createAppStore({
+ socketFactory: () => fakeSocket(),
+ fetchImpl: concurrencyFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ const result = await store.getConcurrencyCooldown("umans");
+ expect(result.ok).toBe(true);
+ if (!result.ok) throw new Error("unreachable");
+ expect(result.providerId).toBe("umans");
+ expect(result.cooldownMs).toBe(350);
+ store.dispose();
+ });
+
+ it("getConcurrencyCooldown surfaces a 404 (no concurrency config) as ok:false", async () => {
+ const store = createAppStore({
+ socketFactory: () => fakeSocket(),
+ fetchImpl: async (input) => {
+ const url =
+ typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ if (url.includes("/concurrency/cooldown/")) {
+ return new Response(
+ JSON.stringify({ error: "No concurrency configuration for this provider" }),
+ {
+ status: 404,
+ },
+ );
+ }
+ return fakeFetchImpl()(input);
+ },
+ localStorage: createFakeStorage(),
+ });
+ const result = await store.getConcurrencyCooldown("ghost");
+ expect(result.ok).toBe(false);
+ if (result.ok) throw new Error("unreachable");
+ expect(result.error).toContain("No concurrency configuration");
+ store.dispose();
+ });
+
+ it("setConcurrencyCooldown PUTs { cooldownMs } + returns the echoed value", async () => {
+ const calls: { url: string; method: string; body: unknown }[] = [];
+ const store = createAppStore({
+ socketFactory: () => fakeSocket(),
+ fetchImpl: async (input, init) => {
+ const url =
+ typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ const method = init?.method ?? "GET";
+ calls.push({ url, method, body: init?.body ? JSON.parse(init.body as string) : null });
+ if (url.includes("/concurrency/cooldown/") && method === "PUT") {
+ const body = init?.body ? JSON.parse(init.body as string) : {};
+ return new Response(
+ JSON.stringify({ providerId: "umans", cooldownMs: body.cooldownMs }),
+ { status: 200 },
+ );
+ }
+ return fakeFetchImpl()(input, init);
+ },
+ localStorage: createFakeStorage(),
+ });
+ const result = await store.setConcurrencyCooldown("umans", 500);
+ expect(result.ok).toBe(true);
+ if (!result.ok) throw new Error("unreachable");
+ expect(result.cooldownMs).toBe(500);
+ const cooldownCall = calls.find(
+ (c) => c.url.includes("/concurrency/cooldown/") && c.method === "PUT",
+ );
+ expect(cooldownCall?.url).toContain("/concurrency/cooldown/umans");
+ expect(cooldownCall?.body).toEqual({ cooldownMs: 500 });
+ store.dispose();
+ });
+
+ it("setConcurrencyCooldown surfaces a 400 (invalid body) as ok:false", async () => {
+ const store = createAppStore({
+ socketFactory: () => fakeSocket(),
+ fetchImpl: async (input, init) => {
+ const url =
+ typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ if (url.includes("/concurrency/cooldown/") && init?.method === "PUT") {
+ return new Response(
+ JSON.stringify({ error: "Body must be { cooldownMs: <non-negative integer> }" }),
+ { status: 400 },
+ );
+ }
+ return fakeFetchImpl()(input, init);
+ },
+ localStorage: createFakeStorage(),
+ });
+ const result = await store.setConcurrencyCooldown("umans", -1);
+ expect(result.ok).toBe(false);
+ if (result.ok) throw new Error("unreachable");
+ expect(result.error).toContain("non-negative integer");
+ store.dispose();
+ });
+
+ // ── Conversation status: `queued` (CR-13 — waiting for a concurrency slot) ────
+
+ it("conversation.statusChanged 'queued' sets the status (tab spinner) without opening a duplicate tab", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+ store.send("hello");
+ const convId = activeConversationId(store);
+ const tabsBefore = store.tabs.length;
+
+ // The backend broadcasts "queued" while the turn waits for a slot.
+ ws.feedServerMessage({
+ type: "conversation.statusChanged",
+ conversationId: convId,
+ status: "queued",
+ workspaceId: "default",
+ });
+
+ expect(store.conversationStatus(convId)).toBe("queued");
+ // The tab already exists (opened on send) — no duplicate tab is opened.
+ expect(store.tabs.length).toBe(tabsBefore);
+
+ // Granted → "active" (dots), then idle on turn seal.
+ ws.feedServerMessage({
+ type: "conversation.statusChanged",
+ conversationId: convId,
+ status: "active",
+ workspaceId: "default",
+ });
+ expect(store.conversationStatus(convId)).toBe("active");
+ ws.feedServerMessage({
+ type: "conversation.statusChanged",
+ conversationId: convId,
+ status: "idle",
+ workspaceId: "default",
+ });
+ expect(store.conversationStatus(convId)).toBe("idle");
+ store.dispose();
+ });
+
+ it("conversation.statusChanged 'queued' opens a tab for a new cross-device conversation", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+ expect(store.tabs.length).toBe(0);
+
+ // Another device's turn is waiting for a slot — broadcast "queued".
+ ws.feedServerMessage({
+ type: "conversation.statusChanged",
+ conversationId: "other-device-conv",
+ status: "queued",
+ workspaceId: "default",
+ });
+
+ expect(store.conversationStatus("other-device-conv")).toBe("queued");
+ // A queued conversation we had no tab for opens one (like `active`).
+ expect(store.tabs.some((t) => t.conversationId === "other-device-conv")).toBe(true);
+ store.dispose();
+ });
+
+ // ── workspaceHasActiveConversations (workspace-card active indicator) ─────
+
+ it("workspaceHasActiveConversations is false when no conversation is active", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+ store.send("hello");
+ const convId = activeConversationId(store);
+
+ // The conversation is freshly created — the backend hasn't reported it as
+ // active yet, so the workspace has no active conversation.
+ expect(store.conversationStatus(convId)).toBeUndefined();
+ expect(store.workspaceHasActiveConversations("default")).toBe(false);
+ store.dispose();
+ });
+
+ it("workspaceHasActiveConversations is true when a conversation in the workspace is active", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+ store.send("hello");
+ const convId = activeConversationId(store);
+
+ ws.feedServerMessage({
+ type: "conversation.statusChanged",
+ conversationId: convId,
+ status: "active",
+ workspaceId: "default",
+ });
+
+ expect(store.workspaceHasActiveConversations("default")).toBe(true);
+ store.dispose();
+ });
+
+ it("workspaceHasActiveConversations is true when a conversation is queued (waiting for a slot)", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+ store.send("hello");
+ const convId = activeConversationId(store);
+
+ ws.feedServerMessage({
+ type: "conversation.statusChanged",
+ conversationId: convId,
+ status: "queued",
+ workspaceId: "default",
+ });
+
+ expect(store.workspaceHasActiveConversations("default")).toBe(true);
+ store.dispose();
+ });
+
+ it("workspaceHasActiveConversations goes back to false when the conversation goes idle", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+ store.send("hello");
+ const convId = activeConversationId(store);
+
+ ws.feedServerMessage({
+ type: "conversation.statusChanged",
+ conversationId: convId,
+ status: "active",
+ workspaceId: "default",
+ });
+ expect(store.workspaceHasActiveConversations("default")).toBe(true);
+
+ ws.feedServerMessage({
+ type: "conversation.statusChanged",
+ conversationId: convId,
+ status: "idle",
+ workspaceId: "default",
+ });
+ expect(store.workspaceHasActiveConversations("default")).toBe(false);
+ store.dispose();
+ });
+
+ it("workspaceHasActiveConversations scopes to the given workspace (ignores other workspaces)", () => {
+ const ws = fakeSocket();
+ const store = createAppStore({
+ socketFactory: () => ws,
+ fetchImpl: fakeFetchImpl(),
+ localStorage: createFakeStorage(),
+ });
+ ws.resolveOpen();
+
+ // A cross-device active conversation in workspace "proj-a".
+ ws.feedServerMessage({
+ type: "conversation.statusChanged",
+ conversationId: "proj-a-conv",
+ status: "active",
+ workspaceId: "proj-a",
+ });
+
+ // proj-a is active; proj-b is not (no active conversation there).
+ expect(store.workspaceHasActiveConversations("proj-a")).toBe(true);
+ expect(store.workspaceHasActiveConversations("proj-b")).toBe(false);
+ store.dispose();
+ });
+});
+
+describe("createAppStore — vision settings (global)", () => {
+ function visionFetch(initial: { imageLimit: number; compactionModel: string | null }): {
+ fetchImpl: typeof fetch;
+ puts: { imageLimit?: number; compactionModel?: string | null }[];
+ } {
+ let current = initial;
+ const puts: { imageLimit?: number; compactionModel?: string | null }[] = [];
+ return {
+ puts,
+ fetchImpl: async (input: string | URL | Request, init?: RequestInit): Promise<Response> => {
+ const url =
+ typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ if (url.endsWith("/models")) {
+ return new Response(
+ JSON.stringify({
+ models: ["kimi/k2", "umans/glm-5.2"],
+ modelInfo: { "kimi/k2": { vision: true } },
+ }),
+ { status: 200 },
+ );
+ }
+ if (url.endsWith("/settings/vision")) {
+ if (init?.method === "PUT") {
+ const text = typeof init.body === "string" ? init.body : "";
+ const body = text ? (JSON.parse(text) as object) : {};
+ puts.push(body as { imageLimit?: number; compactionModel?: string | null });
+ current = { ...current, ...(body as object) } as {
+ imageLimit: number;
+ compactionModel: string | null;
+ };
+ }
+ return new Response(JSON.stringify(current), { status: 200 });
+ }
+ // Default: empty history + no cwd for the other endpoints.
+ return new Response(JSON.stringify({ chunks: [], latestSeq: 0 }), { status: 200 });
+ },
+ };
+ }
+
+ it("loads vision settings on boot (GET /settings/vision)", async () => {
+ const { fetchImpl } = visionFetch({ imageLimit: 7, compactionModel: "kimi/k2" });
+ const store = createAppStore({
+ socketFactory: () => fakeSocket(),
+ fetchImpl,
+ localStorage: createFakeStorage(),
+ });
+ fakeSocket().resolveOpen(); // not strictly needed for HTTP
+
+ await vi.waitFor(() => {
+ expect(store.visionSettings).toEqual({ imageLimit: 7, compactionModel: "kimi/k2" });
+ });
+ store.dispose();
+ });
+
+ it("setVisionSettings PUTs a partial update and reflects the merged settings", async () => {
+ const ctx = visionFetch({ imageLimit: 10, compactionModel: null });
+ const store = createAppStore({
+ socketFactory: () => fakeSocket(),
+ fetchImpl: ctx.fetchImpl,
+ localStorage: createFakeStorage(),
+ });
+
+ await vi.waitFor(() => {
+ expect(store.visionSettings?.imageLimit).toBe(10);
+ });
+
+ const result = await store.setVisionSettings({ imageLimit: 3 });
+ expect(result?.ok).toBe(true);
+ if (result?.ok) {
+ expect(result.settings.imageLimit).toBe(3);
+ expect(result.settings.compactionModel).toBeNull();
+ }
+ expect(ctx.puts).toEqual([{ imageLimit: 3 }]);
+ expect(store.visionSettings?.imageLimit).toBe(3);
+
+ // A second save updates compactionModel only.
+ const result2 = await store.setVisionSettings({ compactionModel: "kimi/k2" });
+ expect(result2?.ok).toBe(true);
+ expect(ctx.puts).toEqual([{ imageLimit: 3 }, { compactionModel: "kimi/k2" }]);
+ expect(store.visionSettings?.compactionModel).toBe("kimi/k2");
+ store.dispose();
+ });
+
+ it("refreshVisionSettings refetches (load adapter)", async () => {
+ const { fetchImpl } = visionFetch({ imageLimit: 5, compactionModel: null });
+ const store = createAppStore({
+ socketFactory: () => fakeSocket(),
+ fetchImpl,
+ localStorage: createFakeStorage(),
+ });
+
+ await store.refreshVisionSettings();
+ expect(store.visionSettings).toEqual({ imageLimit: 5, compactionModel: null });
+ store.dispose();
+ });
+
+ it("surfaces a PUT error", async () => {
+ const fetchImpl: typeof fetch = async (input, init) => {
+ const url = typeof input === "string" ? input : input instanceof URL ? input.href : input.url;
+ if (url.endsWith("/settings/vision")) {
+ if (init?.method === "PUT") {
+ return new Response(JSON.stringify({ error: "invalid imageLimit" }), { status: 400 });
+ }
+ return new Response(JSON.stringify({ imageLimit: 10, compactionModel: null }), {
+ status: 200,
+ });
+ }
+ return new Response(JSON.stringify({ models: [] }), { status: 200 });
+ };
+ const store = createAppStore({
+ socketFactory: () => fakeSocket(),
+ fetchImpl,
+ localStorage: createFakeStorage(),
+ });
+
+ const result = await store.setVisionSettings({ imageLimit: -1 });
+ expect(result?.ok).toBe(false);
+ if (result !== null && !result.ok) {
+ expect(result.error).toContain("invalid imageLimit");
+ }
+ store.dispose();
+ });
});
diff --git a/src/app/uuid.test.ts b/src/app/uuid.test.ts
index bd8e306..7673db1 100644
--- a/src/app/uuid.test.ts
+++ b/src/app/uuid.test.ts
@@ -4,28 +4,28 @@ import { randomId } from "./uuid";
const V4_RE = /^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
describe("randomId", () => {
- it("returns a v4-shaped uuid", () => {
- const id = randomId();
- expect(id).toMatch(V4_RE);
- });
+ it("returns a v4-shaped uuid", () => {
+ const id = randomId();
+ expect(id).toMatch(V4_RE);
+ });
- it("returns distinct values across calls", () => {
- const ids = new Set<string>();
- for (let i = 0; i < 200; i++) {
- ids.add(randomId());
- }
- expect(ids.size).toBe(200);
- });
+ it("returns distinct values across calls", () => {
+ const ids = new Set<string>();
+ for (let i = 0; i < 200; i++) {
+ ids.add(randomId());
+ }
+ expect(ids.size).toBe(200);
+ });
- it("works without crypto.randomUUID (getRandomValues branch)", () => {
- const origRandomUUID = crypto.randomUUID;
- try {
- // Remove randomUUID so the getRandomValues branch is taken
- delete (crypto as { randomUUID?: () => string }).randomUUID;
- const id = randomId();
- expect(id).toMatch(V4_RE);
- } finally {
- crypto.randomUUID = origRandomUUID;
- }
- });
+ it("works without crypto.randomUUID (getRandomValues branch)", () => {
+ const origRandomUUID = crypto.randomUUID;
+ try {
+ // Remove randomUUID so the getRandomValues branch is taken
+ delete (crypto as { randomUUID?: () => string }).randomUUID;
+ const id = randomId();
+ expect(id).toMatch(V4_RE);
+ } finally {
+ crypto.randomUUID = origRandomUUID;
+ }
+ });
});
diff --git a/src/app/uuid.ts b/src/app/uuid.ts
index ae39d4d..bdceefe 100644
--- a/src/app/uuid.ts
+++ b/src/app/uuid.ts
@@ -1,65 +1,65 @@
const HEX = "0123456789abcdef";
function hexChar(n: number): string {
- return HEX.charAt(n & 0xf);
+ return HEX.charAt(n & 0xf);
}
function hexFromBytes(bytes: Uint8Array): string {
- let out = "";
- for (let i = 0; i < bytes.length; i++) {
- const b = bytes[i] as number;
- out += hexChar(b >> 4);
- out += hexChar(b);
- }
- return out;
+ let out = "";
+ for (let i = 0; i < bytes.length; i++) {
+ const b = bytes[i] as number;
+ out += hexChar(b >> 4);
+ out += hexChar(b);
+ }
+ return out;
}
function formatV4(rand: Uint8Array): string {
- const h = hexFromBytes(rand);
- return (
- h.slice(0, 8) +
- "-" +
- h.slice(8, 12) +
- "-4" +
- h.slice(13, 16) +
- "-" +
- ((parseInt(h.slice(16, 18), 16) & 0x3f) | 0x80).toString(16).padStart(2, "0") +
- h.slice(18, 20) +
- "-" +
- h.slice(20, 32)
- );
+ const h = hexFromBytes(rand);
+ return (
+ h.slice(0, 8) +
+ "-" +
+ h.slice(8, 12) +
+ "-4" +
+ h.slice(13, 16) +
+ "-" +
+ ((parseInt(h.slice(16, 18), 16) & 0x3f) | 0x80).toString(16).padStart(2, "0") +
+ h.slice(18, 20) +
+ "-" +
+ h.slice(20, 32)
+ );
}
function uuidFromGetRandomValues(): string {
- const buf = new Uint8Array(16);
- crypto.getRandomValues(buf);
- buf[6] = ((buf[6] as number) & 0x0f) | 0x40;
- buf[8] = ((buf[8] as number) & 0x3f) | 0x80;
- return formatV4(buf);
+ const buf = new Uint8Array(16);
+ crypto.getRandomValues(buf);
+ buf[6] = ((buf[6] as number) & 0x0f) | 0x40;
+ buf[8] = ((buf[8] as number) & 0x3f) | 0x80;
+ return formatV4(buf);
}
function uuidFromMathRandom(): string {
- let s = "";
- for (let i = 0; i < 36; i++) {
- if (i === 8 || i === 13 || i === 18 || i === 23) {
- s += "-";
- } else if (i === 14) {
- s += "4";
- } else if (i === 19) {
- s += hexChar(Math.floor(Math.random() * 4) + 8);
- } else {
- s += hexChar(Math.floor(Math.random() * 16));
- }
- }
- return s;
+ let s = "";
+ for (let i = 0; i < 36; i++) {
+ if (i === 8 || i === 13 || i === 18 || i === 23) {
+ s += "-";
+ } else if (i === 14) {
+ s += "4";
+ } else if (i === 19) {
+ s += hexChar(Math.floor(Math.random() * 4) + 8);
+ } else {
+ s += hexChar(Math.floor(Math.random() * 16));
+ }
+ }
+ return s;
}
export function randomId(): string {
- if (typeof crypto !== "undefined" && typeof crypto.randomUUID === "function") {
- return crypto.randomUUID();
- }
- if (typeof crypto !== "undefined" && typeof crypto.getRandomValues === "function") {
- return uuidFromGetRandomValues();
- }
- return uuidFromMathRandom();
+ if (typeof crypto !== "undefined" && typeof crypto.randomUUID === "function") {
+ return crypto.randomUUID();
+ }
+ if (typeof crypto !== "undefined" && typeof crypto.getRandomValues === "function") {
+ return uuidFromGetRandomValues();
+ }
+ return uuidFromMathRandom();
}
diff --git a/src/components/Table.svelte b/src/components/Table.svelte
new file mode 100644
index 0000000..b6f5c5a
--- /dev/null
+++ b/src/components/Table.svelte
@@ -0,0 +1,42 @@
+<script lang="ts">
+ // Generic, purely presentational table. Props in → markup out; zero logic,
+ // zero data-fetching. Shared by the surface custom-field "table" renderer and
+ // the frontend "Loaded Modules" view, so neither feature depends on the other.
+ let {
+ columns,
+ rows,
+ empty = "No data",
+ }: {
+ readonly columns: readonly string[];
+ readonly rows: readonly (readonly string[])[];
+ /** Text shown when there are no rows. */
+ readonly empty?: string;
+ } = $props();
+</script>
+
+<div class="overflow-x-auto">
+ <table class="table table-sm">
+ <thead>
+ <tr>
+ {#each columns as col, i (i)}
+ <th>{col}</th>
+ {/each}
+ </tr>
+ </thead>
+ <tbody>
+ {#if rows.length === 0}
+ <tr>
+ <td colspan={Math.max(columns.length, 1)} class="opacity-60">{empty}</td>
+ </tr>
+ {:else}
+ {#each rows as row, r (r)}
+ <tr>
+ {#each row as cell, c (c)}
+ <td>{cell}</td>
+ {/each}
+ </tr>
+ {/each}
+ {/if}
+ </tbody>
+ </table>
+</div>
diff --git a/src/components/Table.test.ts b/src/components/Table.test.ts
new file mode 100644
index 0000000..f43a981
--- /dev/null
+++ b/src/components/Table.test.ts
@@ -0,0 +1,35 @@
+import { render, screen, within } from "@testing-library/svelte";
+import { describe, expect, it } from "vitest";
+import Table from "./Table.svelte";
+
+describe("Table", () => {
+ it("renders a header cell per column", () => {
+ render(Table, { props: { columns: ["Name", "Version"], rows: [] } });
+ const headers = screen.getAllByRole("columnheader");
+ expect(headers.map((h) => h.textContent)).toEqual(["Name", "Version"]);
+ });
+
+ it("renders one row per data row with aligned cells", () => {
+ render(Table, {
+ props: {
+ columns: ["Name", "Version"],
+ rows: [
+ ["alpha", "1.0"],
+ ["beta", "2.3"],
+ ],
+ },
+ });
+ const body = screen.getAllByRole("rowgroup")[1];
+ if (body === undefined) throw new Error("expected a tbody rowgroup");
+ const rows = within(body).getAllByRole("row");
+ expect(rows).toHaveLength(2);
+ expect(within(rows[0] as HTMLElement).getByText("alpha")).toBeInTheDocument();
+ expect(within(rows[0] as HTMLElement).getByText("1.0")).toBeInTheDocument();
+ expect(within(rows[1] as HTMLElement).getByText("beta")).toBeInTheDocument();
+ });
+
+ it("shows the empty message when there are no rows", () => {
+ render(Table, { props: { columns: ["A"], rows: [], empty: "Nothing loaded" } });
+ expect(screen.getByText("Nothing loaded")).toBeInTheDocument();
+ });
+});
diff --git a/src/core/chunks/groups.test.ts b/src/core/chunks/groups.test.ts
new file mode 100644
index 0000000..c8b0fa2
--- /dev/null
+++ b/src/core/chunks/groups.test.ts
@@ -0,0 +1,125 @@
+import type { Role, StepId } from "@dispatch/wire";
+import { describe, expect, it } from "vitest";
+import { groupRenderedChunks } from "./groups";
+import type { RenderedChunk } from "./types";
+
+const text = (seq: number, role: Role, t: string, provisional = false): RenderedChunk => ({
+ seq,
+ role,
+ chunk: { type: "text", text: t },
+ provisional,
+});
+
+const call = (seq: number, id: string, stepId?: string, provisional = false): RenderedChunk => ({
+ seq,
+ role: "assistant",
+ chunk: {
+ type: "tool-call",
+ toolCallId: id,
+ toolName: `tool-${id}`,
+ input: { id },
+ ...(stepId !== undefined ? { stepId: stepId as StepId } : {}),
+ },
+ provisional,
+});
+
+const result = (seq: number, id: string, stepId?: string, provisional = false): RenderedChunk => ({
+ seq,
+ role: "tool",
+ chunk: {
+ type: "tool-result",
+ toolCallId: id,
+ toolName: `tool-${id}`,
+ content: `result-${id}`,
+ isError: false,
+ ...(stepId !== undefined ? { stepId: stepId as StepId } : {}),
+ },
+ provisional,
+});
+
+describe("groupRenderedChunks", () => {
+ it("returns no groups for an empty stream", () => {
+ expect(groupRenderedChunks([])).toEqual([]);
+ });
+
+ it("passes non-tool chunks through as single groups, in order", () => {
+ const groups = groupRenderedChunks([text(1, "user", "hi"), text(2, "assistant", "hello")]);
+ expect(groups).toHaveLength(2);
+ expect(groups.every((g) => g.kind === "single")).toBe(true);
+ });
+
+ it("does NOT batch a single tool call (one per step) — call+result stay separate singles", () => {
+ const groups = groupRenderedChunks([call(1, "a", "s1"), result(2, "a", "s1")]);
+ expect(groups).toHaveLength(2);
+ expect(groups.map((g) => g.kind)).toEqual(["single", "single"]);
+ });
+
+ it("does NOT batch tool calls that have no stepId (pre-0.2.0 replay)", () => {
+ const groups = groupRenderedChunks([
+ call(1, "a"),
+ call(2, "b"),
+ result(3, "a"),
+ result(4, "b"),
+ ]);
+ expect(groups).toHaveLength(4);
+ expect(groups.every((g) => g.kind === "single")).toBe(true);
+ });
+
+ it("batches 2+ calls sharing a stepId into one group, pairing each with its result", () => {
+ const groups = groupRenderedChunks([
+ call(1, "a", "s1"),
+ call(2, "b", "s1"),
+ result(3, "a", "s1"),
+ result(4, "b", "s1"),
+ ]);
+ expect(groups).toHaveLength(1);
+ const g = groups[0];
+ if (g?.kind !== "tool-batch") throw new Error("expected a tool-batch group");
+ expect(g.stepId).toBe("s1");
+ expect(g.entries).toHaveLength(2);
+ expect(g.entries[0]?.call.toolCallId).toBe("a");
+ expect(g.entries[0]?.result?.content).toBe("result-a");
+ expect(g.entries[1]?.call.toolCallId).toBe("b");
+ expect(g.entries[1]?.result?.content).toBe("result-b");
+ });
+
+ it("positions the batch at the first call and keeps surrounding chunks in order", () => {
+ const groups = groupRenderedChunks([
+ text(1, "assistant", "before"),
+ call(2, "a", "s1"),
+ call(3, "b", "s1"),
+ result(4, "a", "s1"),
+ result(5, "b", "s1"),
+ text(6, "assistant", "after"),
+ ]);
+ expect(groups.map((g) => g.kind)).toEqual(["single", "tool-batch", "single"]);
+ });
+
+ it("marks the batch provisional when any of its calls/results is provisional", () => {
+ const groups = groupRenderedChunks([call(1, "a", "s1"), call(2, "b", "s1", true)]);
+ const g = groups[0];
+ if (g?.kind !== "tool-batch") throw new Error("expected a tool-batch group");
+ expect(g.provisional).toBe(true);
+ expect(g.entries).toHaveLength(2);
+ expect(g.entries[1]?.result).toBeNull(); // dangling call (no result yet)
+ });
+
+ it("batches one step while leaving a different single-call step ungrouped", () => {
+ const groups = groupRenderedChunks([
+ call(1, "a", "s1"),
+ call(2, "b", "s1"),
+ call(3, "c", "s2"),
+ result(4, "a", "s1"),
+ result(5, "b", "s1"),
+ result(6, "c", "s2"),
+ ]);
+ expect(groups.map((g) => g.kind)).toEqual(["tool-batch", "single", "single"]);
+ const batch = groups[0];
+ if (batch?.kind !== "tool-batch") throw new Error("expected a tool-batch group");
+ expect(batch.entries).toHaveLength(2);
+ // the s2 single call + its result remain as separate single groups
+ const singles = groups.slice(1);
+ expect(singles[0]?.kind === "single" && singles[0].chunk.chunk.type).toBe("tool-call");
+ expect(singles[1]?.kind === "single" && singles[1].chunk.chunk.type).toBe("tool-result");
+ });
+});
diff --git a/src/core/chunks/groups.ts b/src/core/chunks/groups.ts
new file mode 100644
index 0000000..53a2873
--- /dev/null
+++ b/src/core/chunks/groups.ts
@@ -0,0 +1,95 @@
+import type { ToolCallChunk, ToolResultChunk } from "@dispatch/wire";
+import type { RenderedChunk } from "./types";
+
+/**
+ * One tool call within a batch, paired with its result (matched by `toolCallId`).
+ * `result` is null while the call is still pending (no result chunk yet).
+ */
+export interface ToolBatchEntry {
+ readonly call: ToolCallChunk;
+ readonly result: ToolResultChunk | null;
+}
+
+/**
+ * A render group: either a single rendered chunk (rendered as today) or a batch
+ * of tool calls the model emitted together in one step (shared `stepId`), to be
+ * rendered as one grouped unit.
+ */
+export type RenderGroup =
+ | { readonly kind: "single"; readonly chunk: RenderedChunk }
+ | {
+ readonly kind: "tool-batch";
+ readonly stepId: string;
+ readonly entries: readonly ToolBatchEntry[];
+ readonly provisional: boolean;
+ };
+
+/**
+ * Group a flat rendered-chunk stream for display. Tool calls sharing a `stepId`
+ * (the backend's authoritative batch key) where the step has 2+ calls become one
+ * `tool-batch` group, positioned at the first call and pairing each call with its
+ * `tool-result` (by `toolCallId`); the absorbed result chunks are not emitted on
+ * their own. Single tool calls (one per step, or no `stepId` — e.g. pre-0.2.0
+ * replay rows) and every non-tool chunk render as `single` groups, in order.
+ *
+ * Pure: input → output, no DOM, no Svelte.
+ */
+export function groupRenderedChunks(rendered: readonly RenderedChunk[]): readonly RenderGroup[] {
+ // 1. Steps that batched 2+ tool calls.
+ const callsPerStep = new Map<string, number>();
+ for (const rc of rendered) {
+ if (rc.chunk.type === "tool-call" && rc.chunk.stepId !== undefined) {
+ callsPerStep.set(rc.chunk.stepId, (callsPerStep.get(rc.chunk.stepId) ?? 0) + 1);
+ }
+ }
+ const batchSteps = new Set<string>();
+ for (const [stepId, count] of callsPerStep) {
+ if (count >= 2) batchSteps.add(stepId);
+ }
+
+ // 2. toolCallIds belonging to a batch (so their results are absorbed), and a
+ // lookup of result chunks by toolCallId for pairing.
+ const batchCallIds = new Set<string>();
+ const resultByCallId = new Map<string, ToolResultChunk>();
+ for (const rc of rendered) {
+ const chunk = rc.chunk;
+ if (chunk.type === "tool-call" && chunk.stepId !== undefined && batchSteps.has(chunk.stepId)) {
+ batchCallIds.add(chunk.toolCallId);
+ } else if (chunk.type === "tool-result" && !resultByCallId.has(chunk.toolCallId)) {
+ resultByCallId.set(chunk.toolCallId, chunk);
+ }
+ }
+
+ // 3. Emit groups in stream order; each batch lands at its first call.
+ const groups: RenderGroup[] = [];
+ const emittedSteps = new Set<string>();
+ for (const rc of rendered) {
+ const chunk = rc.chunk;
+
+ if (chunk.type === "tool-call" && chunk.stepId !== undefined && batchSteps.has(chunk.stepId)) {
+ const stepId = chunk.stepId;
+ if (emittedSteps.has(stepId)) continue;
+ emittedSteps.add(stepId);
+
+ const entries: ToolBatchEntry[] = [];
+ let provisional = false;
+ for (const inner of rendered) {
+ if (inner.chunk.type === "tool-call" && inner.chunk.stepId === stepId) {
+ const result = resultByCallId.get(inner.chunk.toolCallId) ?? null;
+ entries.push({ call: inner.chunk, result });
+ if (inner.provisional) provisional = true;
+ }
+ }
+ groups.push({ kind: "tool-batch", stepId, entries, provisional });
+ continue;
+ }
+
+ if (chunk.type === "tool-result" && batchCallIds.has(chunk.toolCallId)) {
+ continue; // absorbed into its batch
+ }
+
+ groups.push({ kind: "single", chunk: rc });
+ }
+
+ return groups;
+}
diff --git a/src/core/chunks/image-url.test.ts b/src/core/chunks/image-url.test.ts
new file mode 100644
index 0000000..8a79c09
--- /dev/null
+++ b/src/core/chunks/image-url.test.ts
@@ -0,0 +1,46 @@
+import { describe, expect, it } from "vitest";
+import { resolveImageUrl } from "./image-url";
+
+const BASE = "http://localhost:24203";
+
+describe("resolveImageUrl", () => {
+ it("returns a data URL as-is (the optimistic echo / a pasted image)", () => {
+ const dataUrl = "data:image/png;base64,iVBORw0KGgo=";
+ expect(resolveImageUrl(dataUrl, BASE)).toBe(dataUrl);
+ });
+
+ it("returns an absolute http URL as-is", () => {
+ const abs = "https://example.com/img.png";
+ expect(resolveImageUrl(abs, BASE)).toBe(abs);
+ });
+
+ it("prepends the api base to a relative /images/ path", () => {
+ expect(resolveImageUrl("/images/conv-123/abc-456.png", BASE)).toBe(
+ "http://localhost:24203/images/conv-123/abc-456.png",
+ );
+ });
+
+ it("does not double the slash when the base has a trailing slash", () => {
+ expect(resolveImageUrl("/images/c/x.png", "http://localhost:24203/")).toBe(
+ "http://localhost:24203/images/c/x.png",
+ );
+ });
+
+ it("adds a leading slash to a path-relative url without one", () => {
+ expect(resolveImageUrl("images/c/x.png", BASE)).toBe("http://localhost:24203/images/c/x.png");
+ });
+
+ it("returns the relative path as-is when apiBase is empty (root-relative)", () => {
+ // A browser resolves a root-relative `/images/…` against the document origin.
+ expect(resolveImageUrl("/images/c/x.png", "")).toBe("/images/c/x.png");
+ });
+
+ it("handles a relative path with an empty apiBase (path-relative without slash)", () => {
+ expect(resolveImageUrl("images/c/x.png", "")).toBe("/images/c/x.png");
+ });
+
+ it("returns a data URL as-is even with an empty apiBase", () => {
+ const dataUrl = "data:image/jpeg;base64,AAAA";
+ expect(resolveImageUrl(dataUrl, "")).toBe(dataUrl);
+ });
+});
diff --git a/src/core/chunks/image-url.ts b/src/core/chunks/image-url.ts
new file mode 100644
index 0000000..e5ec756
--- /dev/null
+++ b/src/core/chunks/image-url.ts
@@ -0,0 +1,35 @@
+/**
+ * Resolve an `ImageChunk.url` into a renderable `<img src>` value.
+ *
+ * Persisted image chunks now carry a COMPACT HTTP path
+ * (`/images/<conversationId>/<uuid>.png`) served by the backend — NOT a base64
+ * data URL (images are stored on disk under tmp, not in the conversation store,
+ * to keep SQLite payloads small). The optimistic echo (what the FE just sent in
+ * `ChatRequest.images`) still carries a data URL, and a chunk could also carry
+ * an absolute `http(s)://` URL, so the resolution is format-aware:
+ *
+ * - `data:` URL → returned as-is (the optimistic echo / a pasted data URL).
+ * - `http(s)://` → returned as-is (an absolute URL already).
+ * - anything else (a relative path like `/images/…`) → `apiBase` is prepended
+ * (with no double slash). An empty `apiBase` leaves a root-relative path,
+ * which a browser resolves against the document origin.
+ *
+ * Pure: input → output, zero DOM, zero Svelte.
+ *
+ * @param url The chunk's `url` (data URL, absolute, or relative path).
+ * @param apiBase The HTTP API base URL (e.g. `http://localhost:24203`).
+ */
+export function resolveImageUrl(url: string, apiBase: string): string {
+ if (url.startsWith("data:") || url.startsWith("http://") || url.startsWith("https://")) {
+ return url;
+ }
+ // A relative path (e.g. `/images/…`) — normalize to a leading slash and
+ // prepend the api base. With an empty base this yields a root-relative path
+ // (a browser resolves `/images/…` against the document origin).
+ const path = url.startsWith("/") ? url : `/${url}`;
+ if (apiBase.length === 0) return path;
+ // Join without a double slash: strip a trailing slash from the base, then
+ // append the (leading-slash) path verbatim.
+ const base = apiBase.endsWith("/") ? apiBase.slice(0, -1) : apiBase;
+ return `${base}${path}`;
+}
diff --git a/src/core/chunks/index.ts b/src/core/chunks/index.ts
index 67739bc..bdd6ce4 100644
--- a/src/core/chunks/index.ts
+++ b/src/core/chunks/index.ts
@@ -1,8 +1,31 @@
-export { appendUserMessage, applyHistory, foldEvent, initialState } from "./reducer";
-export { selectChunks, selectMessages } from "./selectors";
+export type { RenderGroup, ToolBatchEntry } from "./groups";
+export { groupRenderedChunks } from "./groups";
+export { resolveImageUrl } from "./image-url";
+export {
+ appendUserMessage,
+ applyHistory,
+ clearGenerating,
+ foldEvent,
+ initialState,
+} from "./reducer";
+export type { ProviderRetryView } from "./retry-banner";
+export { formatRetryDelay, viewProviderRetry } from "./retry-banner";
+export { selectChunks, selectGenerating, selectMessages, selectProviderRetry } from "./selectors";
+export {
+ DEFAULT_CHAT_LIMIT,
+ initialWindowSize,
+ MAX_CHAT_LIMIT,
+ MIN_CHAT_LIMIT,
+ normalizeChatLimit,
+ restoreEarlier,
+ selectHasEarlier,
+ trimTranscript,
+ unloadCount,
+ windowTranscript,
+} from "./trim";
export type {
- AccumulatingChunk,
- ProvisionalChunk,
- RenderedChunk,
- TranscriptState,
+ AccumulatingChunk,
+ ProvisionalChunk,
+ RenderedChunk,
+ TranscriptState,
} from "./types";
diff --git a/src/core/chunks/reducer.test.ts b/src/core/chunks/reducer.test.ts
index b7165e4..058552e 100644
--- a/src/core/chunks/reducer.test.ts
+++ b/src/core/chunks/reducer.test.ts
@@ -1,467 +1,1024 @@
import type {
- StoredChunk,
- TurnDoneEvent,
- TurnErrorEvent,
- TurnReasoningDeltaEvent,
- TurnSealedEvent,
- TurnStartEvent,
- TurnTextDeltaEvent,
- TurnToolCallEvent,
- TurnToolResultEvent,
- TurnUsageEvent,
+ ImageInput,
+ StepId,
+ StoredChunk,
+ TurnDoneEvent,
+ TurnErrorEvent,
+ TurnInputEvent,
+ TurnProviderRetryEvent,
+ TurnReasoningDeltaEvent,
+ TurnSealedEvent,
+ TurnStartEvent,
+ TurnSteeringEvent,
+ TurnTextDeltaEvent,
+ TurnToolCallEvent,
+ TurnToolResultEvent,
+ TurnUsageEvent,
} from "@dispatch/wire";
import { describe, expect, it } from "vitest";
-import { appendUserMessage, applyHistory, foldEvent, initialState } from "./reducer";
-import { selectChunks, selectMessages } from "./selectors";
+import {
+ appendUserMessage,
+ applyHistory,
+ clearGenerating,
+ foldEvent,
+ initialState,
+} from "./reducer";
+import { selectChunks, selectGenerating, selectMessages, selectProviderRetry } from "./selectors";
const turnStart = (turnId: string): TurnStartEvent => ({
- type: "turn-start",
- conversationId: "c1",
- turnId,
+ type: "turn-start",
+ conversationId: "c1",
+ turnId,
});
const textDelta = (turnId: string, delta: string): TurnTextDeltaEvent => ({
- type: "text-delta",
- conversationId: "c1",
- turnId,
- delta,
+ type: "text-delta",
+ conversationId: "c1",
+ turnId,
+ delta,
});
const reasoningDelta = (turnId: string, delta: string): TurnReasoningDeltaEvent => ({
- type: "reasoning-delta",
- conversationId: "c1",
- turnId,
- delta,
+ type: "reasoning-delta",
+ conversationId: "c1",
+ turnId,
+ delta,
});
const toolCall = (
- turnId: string,
- toolCallId: string,
- toolName: string,
- input: unknown,
+ turnId: string,
+ toolCallId: string,
+ toolName: string,
+ input: unknown,
+ stepId = "s0",
): TurnToolCallEvent => ({
- type: "tool-call",
- conversationId: "c1",
- turnId,
- toolCallId,
- toolName,
- input,
+ type: "tool-call",
+ conversationId: "c1",
+ turnId,
+ toolCallId,
+ toolName,
+ input,
+ stepId: stepId as StepId,
});
const toolResult = (
- turnId: string,
- toolCallId: string,
- toolName: string,
- content: string,
+ turnId: string,
+ toolCallId: string,
+ toolName: string,
+ content: string,
+ stepId = "s0",
): TurnToolResultEvent => ({
- type: "tool-result",
- conversationId: "c1",
- turnId,
- toolCallId,
- toolName,
- content,
- isError: false,
+ type: "tool-result",
+ conversationId: "c1",
+ turnId,
+ toolCallId,
+ toolName,
+ content,
+ isError: false,
+ stepId: stepId as StepId,
});
const usageEvent = (turnId: string, inputTokens: number, outputTokens: number): TurnUsageEvent => ({
- type: "usage",
- conversationId: "c1",
- turnId,
- usage: { inputTokens, outputTokens },
+ type: "usage",
+ conversationId: "c1",
+ turnId,
+ usage: { inputTokens, outputTokens },
});
const errorEvent = (turnId: string, message: string, code?: string): TurnErrorEvent =>
- code !== undefined
- ? { type: "error", conversationId: "c1", turnId, message, code }
- : { type: "error", conversationId: "c1", turnId, message };
+ code !== undefined
+ ? { type: "error", conversationId: "c1", turnId, message, code }
+ : { type: "error", conversationId: "c1", turnId, message };
const doneEvent = (turnId: string): TurnDoneEvent => ({
- type: "done",
- conversationId: "c1",
- turnId,
- reason: "stop",
+ type: "done",
+ conversationId: "c1",
+ turnId,
+ reason: "stop",
});
const turnSealed = (turnId: string): TurnSealedEvent => ({
- type: "turn-sealed",
- conversationId: "c1",
- turnId,
+ type: "turn-sealed",
+ conversationId: "c1",
+ turnId,
});
+const providerRetry = (
+ turnId: string,
+ attempt: number,
+ delayMs: number,
+ message = "HTTP 429: overloaded",
+ code?: string,
+): TurnProviderRetryEvent =>
+ code !== undefined
+ ? { type: "provider-retry", conversationId: "c1", turnId, attempt, delayMs, message, code }
+ : { type: "provider-retry", conversationId: "c1", turnId, attempt, delayMs, message };
+
const storedChunk = (
- seq: number,
- role: "user" | "assistant" | "tool" | "system",
- chunk: StoredChunk["chunk"],
+ seq: number,
+ role: "user" | "assistant" | "tool" | "system",
+ chunk: StoredChunk["chunk"],
): StoredChunk => ({
- seq,
- role,
- chunk,
+ seq,
+ role,
+ chunk,
});
describe("initialState", () => {
- it("initial state is empty", () => {
- const s = initialState();
- expect(s.committed).toEqual([]);
- expect(s.provisional).toEqual([]);
- expect(s.accumulating).toBeNull();
- expect(s.currentTurnId).toBeNull();
- expect(s.latestUsage).toBeNull();
- expect(s.sealedTurnId).toBeNull();
- });
+ it("initial state is empty", () => {
+ const s = initialState();
+ expect(s.committed).toEqual([]);
+ expect(s.provisional).toEqual([]);
+ expect(s.accumulating).toBeNull();
+ expect(s.currentTurnId).toBeNull();
+ expect(s.latestUsage).toBeNull();
+ expect(s.sealedTurnId).toBeNull();
+ expect(s.generating).toBe(false);
+ });
+});
+
+describe("foldEvent — generating (turn-running state)", () => {
+ it("turn-start sets generating true", () => {
+ let s = initialState();
+ expect(selectGenerating(s)).toBe(false);
+ s = foldEvent(s, turnStart("t1"));
+ expect(s.generating).toBe(true);
+ expect(selectGenerating(s)).toBe(true);
+ });
+
+ it("a content delta sets generating true (e.g. a late-joiner replay missing turn-start)", () => {
+ let s = initialState();
+ s = foldEvent(s, textDelta("t1", "hi"));
+ expect(s.generating).toBe(true);
+ s = initialState();
+ s = foldEvent(s, reasoningDelta("t1", "hmm"));
+ expect(s.generating).toBe(true);
+ s = initialState();
+ s = foldEvent(s, toolCall("t1", "tc1", "bash", {}));
+ expect(s.generating).toBe(true);
+ });
+
+ it("stays generating across the turn's deltas", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, textDelta("t1", "wor"));
+ s = foldEvent(s, textDelta("t1", "king"));
+ expect(s.generating).toBe(true);
+ });
+
+ it("done clears generating", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, textDelta("t1", "answer"));
+ s = foldEvent(s, doneEvent("t1"));
+ expect(s.generating).toBe(false);
+ });
+
+ it("turn-sealed clears generating", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, turnSealed("t1"));
+ expect(s.generating).toBe(false);
+ });
+
+ it("error clears generating", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, errorEvent("t1", "boom"));
+ expect(s.generating).toBe(false);
+ });
+
+ it("a new turn re-asserts generating after the previous one finished", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, doneEvent("t1"));
+ s = foldEvent(s, turnSealed("t1"));
+ expect(s.generating).toBe(false);
+ s = foldEvent(s, turnStart("t2"));
+ expect(s.generating).toBe(true);
+ });
+
+ it("status does not change generating (free-form string, not inferred)", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ const next = foldEvent(s, { type: "status", conversationId: "c1", status: "idle" });
+ expect(next.generating).toBe(true);
+ });
+});
+
+describe("clearGenerating", () => {
+ it("clears a set generating flag", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ expect(s.generating).toBe(true);
+ const cleared = clearGenerating(s);
+ expect(cleared.generating).toBe(false);
+ });
+
+ it("returns the same object when already not generating (no-op)", () => {
+ const s = initialState();
+ expect(clearGenerating(s)).toBe(s);
+ });
+
+ it("preserves transcript content while clearing generating", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, textDelta("t1", "partial"));
+ const cleared = clearGenerating(s);
+ expect(cleared.generating).toBe(false);
+ expect(cleared.accumulating).toEqual({ kind: "text", text: "partial" });
+ expect(cleared.currentTurnId).toBe("t1");
+ });
});
describe("foldEvent — text-delta", () => {
- it("text-delta accumulates into one TextChunk", () => {
- let s = initialState();
- s = foldEvent(s, turnStart("t1"));
- s = foldEvent(s, textDelta("t1", "hello"));
- expect(s.accumulating).toEqual({ kind: "text", text: "hello" });
- expect(s.provisional).toEqual([]);
- });
-
- it("successive text-deltas extend the same provisional chunk", () => {
- let s = initialState();
- s = foldEvent(s, turnStart("t1"));
- s = foldEvent(s, textDelta("t1", "hello "));
- s = foldEvent(s, textDelta("t1", "world"));
- expect(s.accumulating).toEqual({ kind: "text", text: "hello world" });
- expect(s.provisional).toEqual([]);
- });
-
- it("text-delta after reasoning-delta flushes thinking and starts text", () => {
- let s = initialState();
- s = foldEvent(s, turnStart("t1"));
- s = foldEvent(s, reasoningDelta("t1", "thinking..."));
- s = foldEvent(s, textDelta("t1", "answer"));
- expect(s.accumulating).toEqual({ kind: "text", text: "answer" });
- expect(s.provisional).toHaveLength(1);
- expect(s.provisional[0]?.chunk).toEqual({ type: "thinking", text: "thinking..." });
- expect(s.provisional[0]?.role).toBe("assistant");
- });
+ it("text-delta accumulates into one TextChunk", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, textDelta("t1", "hello"));
+ expect(s.accumulating).toEqual({ kind: "text", text: "hello" });
+ expect(s.provisional).toEqual([]);
+ });
+
+ it("successive text-deltas extend the same provisional chunk", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, textDelta("t1", "hello "));
+ s = foldEvent(s, textDelta("t1", "world"));
+ expect(s.accumulating).toEqual({ kind: "text", text: "hello world" });
+ expect(s.provisional).toEqual([]);
+ });
+
+ it("text-delta after reasoning-delta flushes thinking and starts text", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, reasoningDelta("t1", "thinking..."));
+ s = foldEvent(s, textDelta("t1", "answer"));
+ expect(s.accumulating).toEqual({ kind: "text", text: "answer" });
+ expect(s.provisional).toHaveLength(1);
+ expect(s.provisional[0]?.chunk).toEqual({ type: "thinking", text: "thinking..." });
+ expect(s.provisional[0]?.role).toBe("assistant");
+ });
});
describe("foldEvent — reasoning-delta", () => {
- it("reasoning-delta yields a thinking chunk", () => {
- let s = initialState();
- s = foldEvent(s, turnStart("t1"));
- s = foldEvent(s, reasoningDelta("t1", "hmm"));
- expect(s.accumulating).toEqual({ kind: "thinking", text: "hmm" });
- });
-
- it("successive reasoning-deltas extend the same chunk", () => {
- let s = initialState();
- s = foldEvent(s, turnStart("t1"));
- s = foldEvent(s, reasoningDelta("t1", "hmm "));
- s = foldEvent(s, reasoningDelta("t1", "ok"));
- expect(s.accumulating).toEqual({ kind: "thinking", text: "hmm ok" });
- });
+ it("reasoning-delta yields a thinking chunk", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, reasoningDelta("t1", "hmm"));
+ expect(s.accumulating).toEqual({ kind: "thinking", text: "hmm" });
+ });
+
+ it("successive reasoning-deltas extend the same chunk", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, reasoningDelta("t1", "hmm "));
+ s = foldEvent(s, reasoningDelta("t1", "ok"));
+ expect(s.accumulating).toEqual({ kind: "thinking", text: "hmm ok" });
+ });
});
describe("foldEvent — tool-call then tool-result", () => {
- it("tool-call then tool-result render in order", () => {
- let s = initialState();
- s = foldEvent(s, turnStart("t1"));
- s = foldEvent(s, toolCall("t1", "tc1", "bash", { cmd: "ls" }));
- s = foldEvent(s, toolResult("t1", "tc1", "bash", "file.txt"));
- expect(s.provisional).toHaveLength(2);
- expect(s.provisional[0]?.role).toBe("assistant");
- expect(s.provisional[0]?.chunk).toEqual({
- type: "tool-call",
- toolCallId: "tc1",
- toolName: "bash",
- input: { cmd: "ls" },
- });
- expect(s.provisional[1]?.role).toBe("tool");
- expect(s.provisional[1]?.chunk).toEqual({
- type: "tool-result",
- toolCallId: "tc1",
- toolName: "bash",
- content: "file.txt",
- isError: false,
- });
- });
-
- it("tool-call flushes accumulating text", () => {
- let s = initialState();
- s = foldEvent(s, turnStart("t1"));
- s = foldEvent(s, textDelta("t1", "let me check"));
- s = foldEvent(s, toolCall("t1", "tc1", "bash", {}));
- expect(s.provisional).toHaveLength(2);
- expect(s.provisional[0]?.chunk).toEqual({ type: "text", text: "let me check" });
- expect(s.provisional[1]?.chunk).toMatchObject({ type: "tool-call", toolCallId: "tc1" });
- expect(s.accumulating).toBeNull();
- });
+ it("tool-call then tool-result render in order", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, toolCall("t1", "tc1", "bash", { cmd: "ls" }, "t1#0"));
+ s = foldEvent(s, toolResult("t1", "tc1", "bash", "file.txt", "t1#0"));
+ expect(s.provisional).toHaveLength(2);
+ expect(s.provisional[0]?.role).toBe("assistant");
+ // foldEvent copies the event's stepId onto the chunk (grouping key).
+ expect(s.provisional[0]?.chunk).toEqual({
+ type: "tool-call",
+ toolCallId: "tc1",
+ toolName: "bash",
+ input: { cmd: "ls" },
+ stepId: "t1#0",
+ });
+ expect(s.provisional[1]?.role).toBe("tool");
+ expect(s.provisional[1]?.chunk).toEqual({
+ type: "tool-result",
+ toolCallId: "tc1",
+ toolName: "bash",
+ content: "file.txt",
+ isError: false,
+ stepId: "t1#0",
+ });
+ });
+
+ it("tool-call flushes accumulating text", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, textDelta("t1", "let me check"));
+ s = foldEvent(s, toolCall("t1", "tc1", "bash", {}));
+ expect(s.provisional).toHaveLength(2);
+ expect(s.provisional[0]?.chunk).toEqual({ type: "text", text: "let me check" });
+ expect(s.provisional[1]?.chunk).toMatchObject({ type: "tool-call", toolCallId: "tc1" });
+ expect(s.accumulating).toBeNull();
+ });
});
describe("foldEvent — turn-sealed", () => {
- it("turn-sealed sets sealedTurnId", () => {
- let s = initialState();
- s = foldEvent(s, turnStart("t1"));
- s = foldEvent(s, textDelta("t1", "hi"));
- s = foldEvent(s, turnSealed("t1"));
- expect(s.sealedTurnId).toBe("t1");
- expect(s.accumulating).toBeNull();
- expect(s.provisional).toHaveLength(1);
- expect(s.provisional[0]?.chunk).toEqual({ type: "text", text: "hi" });
- });
+ it("turn-sealed sets sealedTurnId", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, textDelta("t1", "hi"));
+ s = foldEvent(s, turnSealed("t1"));
+ expect(s.sealedTurnId).toBe("t1");
+ expect(s.accumulating).toBeNull();
+ expect(s.provisional).toHaveLength(1);
+ expect(s.provisional[0]?.chunk).toEqual({ type: "text", text: "hi" });
+ });
});
describe("foldEvent — usage", () => {
- it("stores latest usage", () => {
- let s = initialState();
- s = foldEvent(s, usageEvent("t1", 100, 50));
- expect(s.latestUsage).toEqual({ inputTokens: 100, outputTokens: 50 });
- });
-
- it("overwrites previous usage", () => {
- let s = initialState();
- s = foldEvent(s, usageEvent("t1", 100, 50));
- s = foldEvent(s, usageEvent("t1", 200, 80));
- expect(s.latestUsage).toEqual({ inputTokens: 200, outputTokens: 80 });
- });
+ it("stores latest usage", () => {
+ let s = initialState();
+ s = foldEvent(s, usageEvent("t1", 100, 50));
+ expect(s.latestUsage).toEqual({ inputTokens: 100, outputTokens: 50 });
+ });
+
+ it("overwrites previous usage", () => {
+ let s = initialState();
+ s = foldEvent(s, usageEvent("t1", 100, 50));
+ s = foldEvent(s, usageEvent("t1", 200, 80));
+ expect(s.latestUsage).toEqual({ inputTokens: 200, outputTokens: 80 });
+ });
});
describe("foldEvent — error", () => {
- it("creates error chunk with code", () => {
- let s = initialState();
- s = foldEvent(s, turnStart("t1"));
- s = foldEvent(s, errorEvent("t1", "bad", "E001"));
- expect(s.provisional).toHaveLength(1);
- expect(s.provisional[0]?.chunk).toEqual({ type: "error", message: "bad", code: "E001" });
- expect(s.provisional[0]?.role).toBe("assistant");
- });
-
- it("creates error chunk without code", () => {
- let s = initialState();
- s = foldEvent(s, turnStart("t1"));
- s = foldEvent(s, errorEvent("t1", "bad"));
- expect(s.provisional).toHaveLength(1);
- expect(s.provisional[0]?.chunk).toEqual({ type: "error", message: "bad" });
- });
+ it("creates error chunk with code", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, errorEvent("t1", "bad", "E001"));
+ expect(s.provisional).toHaveLength(1);
+ expect(s.provisional[0]?.chunk).toEqual({ type: "error", message: "bad", code: "E001" });
+ expect(s.provisional[0]?.role).toBe("assistant");
+ });
+
+ it("creates error chunk without code", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, errorEvent("t1", "bad"));
+ expect(s.provisional).toHaveLength(1);
+ expect(s.provisional[0]?.chunk).toEqual({ type: "error", message: "bad" });
+ });
});
describe("foldEvent — done", () => {
- it("flushes accumulating chunk on done", () => {
- let s = initialState();
- s = foldEvent(s, turnStart("t1"));
- s = foldEvent(s, textDelta("t1", "hello"));
- s = foldEvent(s, doneEvent("t1"));
- expect(s.accumulating).toBeNull();
- expect(s.provisional).toHaveLength(1);
- expect(s.provisional[0]?.chunk).toEqual({ type: "text", text: "hello" });
- });
+ it("flushes accumulating chunk on done", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, textDelta("t1", "hello"));
+ s = foldEvent(s, doneEvent("t1"));
+ expect(s.accumulating).toBeNull();
+ expect(s.provisional).toHaveLength(1);
+ expect(s.provisional[0]?.chunk).toEqual({ type: "text", text: "hello" });
+ });
});
describe("foldEvent — status and tool-output", () => {
- it("status is a no-op", () => {
- const s = initialState();
- const next = foldEvent(s, { type: "status", conversationId: "c1", status: "running" });
- expect(next).toBe(s);
- });
-
- it("tool-output is a no-op", () => {
- const s = initialState();
- const next = foldEvent(s, {
- type: "tool-output",
- conversationId: "c1",
- turnId: "t1",
- toolCallId: "tc1",
- data: "output",
- stream: "stdout",
- });
- expect(next).toBe(s);
- });
+ it("status is a no-op", () => {
+ const s = initialState();
+ const next = foldEvent(s, { type: "status", conversationId: "c1", status: "running" });
+ expect(next).toBe(s);
+ });
+
+ it("tool-output is a no-op", () => {
+ const s = initialState();
+ const next = foldEvent(s, {
+ type: "tool-output",
+ conversationId: "c1",
+ turnId: "t1",
+ toolCallId: "tc1",
+ data: "output",
+ stream: "stdout",
+ });
+ expect(next).toBe(s);
+ });
+});
+
+describe("foldEvent — provider-retry (transient retry banner)", () => {
+ it("sets the provider-retry banner on a provider-retry event", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, providerRetry("t1", 0, 5000, "HTTP 429: overloaded", "429"));
+ const retry = selectProviderRetry(s);
+ expect(retry).not.toBeNull();
+ expect(retry?.attempt).toBe(0);
+ expect(retry?.delayMs).toBe(5000);
+ expect(retry?.code).toBe("429");
+ });
+
+ it("does NOT add a chunk (never persisted — never pollutes the prompt)", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, providerRetry("t1", 0, 5000));
+ expect(selectChunks(s)).toHaveLength(0);
+ expect(s.provisional).toHaveLength(0);
+ expect(s.accumulating).toBeNull();
+ });
+
+ it("coalesces: the latest attempt + delay replaces the previous", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, providerRetry("t1", 0, 5000, "first", "429"));
+ s = foldEvent(s, providerRetry("t1", 1, 10000, "second", "429"));
+ const retry = selectProviderRetry(s);
+ expect(retry?.attempt).toBe(1);
+ expect(retry?.delayMs).toBe(10000);
+ expect(retry?.message).toBe("second");
+ });
+
+ it("keeps generating true (the turn is still in flight, just retrying)", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, providerRetry("t1", 0, 5000));
+ expect(s.generating).toBe(true);
+ });
+
+ it("clears when content resumes (text-delta)", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, providerRetry("t1", 0, 5000));
+ expect(selectProviderRetry(s)).not.toBeNull();
+ s = foldEvent(s, textDelta("t1", "here is the reply"));
+ expect(selectProviderRetry(s)).toBeNull();
+ });
+
+ it("clears when content resumes (reasoning-delta / tool-call / tool-result)", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, providerRetry("t1", 0, 5000));
+ s = foldEvent(s, reasoningDelta("t1", "thinking"));
+ expect(selectProviderRetry(s)).toBeNull();
+
+ s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, providerRetry("t1", 0, 5000));
+ s = foldEvent(s, toolCall("t1", "tc1", "bash", {}));
+ expect(selectProviderRetry(s)).toBeNull();
+ });
+
+ it("clears when the turn ends (done / turn-sealed / error)", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, providerRetry("t1", 0, 5000));
+ s = foldEvent(s, errorEvent("t1", "exhausted"));
+ expect(selectProviderRetry(s)).toBeNull();
+
+ s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, providerRetry("t1", 0, 5000));
+ s = foldEvent(s, doneEvent("t1"));
+ expect(selectProviderRetry(s)).toBeNull();
+
+ s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, providerRetry("t1", 0, 5000));
+ s = foldEvent(s, turnSealed("t1"));
+ expect(selectProviderRetry(s)).toBeNull();
+ });
+
+ it("clears on a new turn (turn-start)", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, providerRetry("t1", 0, 5000));
+ expect(selectProviderRetry(s)).not.toBeNull();
+ s = foldEvent(s, turnStart("t2"));
+ expect(selectProviderRetry(s)).toBeNull();
+ });
+
+ it("leaves the banner untouched across metadata events (usage / step-complete / status)", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, providerRetry("t1", 0, 5000));
+ s = foldEvent(s, usageEvent("t1", 10, 20));
+ expect(selectProviderRetry(s)).not.toBeNull();
+ s = foldEvent(s, {
+ type: "step-complete",
+ conversationId: "c1",
+ turnId: "t1",
+ stepId: "t1#0" as StepId,
+ ttftMs: 100,
+ decodeMs: 200,
+ genTotalMs: 300,
+ });
+ expect(selectProviderRetry(s)).not.toBeNull();
+ s = foldEvent(s, { type: "status", conversationId: "c1", status: "running" });
+ expect(selectProviderRetry(s)).not.toBeNull();
+ });
+
+ it("is null in the initial state", () => {
+ expect(selectProviderRetry(initialState())).toBeNull();
+ });
+});
+
+describe("clearGenerating also clears a stale provider-retry banner (reconnect)", () => {
+ it("clears the retry banner alongside generating on reconnect", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, providerRetry("t1", 0, 5000));
+ expect(s.generating).toBe(true);
+ expect(selectProviderRetry(s)).not.toBeNull();
+ const cleared = clearGenerating(s);
+ expect(cleared.generating).toBe(false);
+ expect(selectProviderRetry(cleared)).toBeNull();
+ });
+
+ it("preserves transcript content while clearing the banner", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, textDelta("t1", "partial"));
+ s = foldEvent(s, providerRetry("t1", 0, 5000));
+ const cleared = clearGenerating(s);
+ expect(cleared.accumulating).toEqual({ kind: "text", text: "partial" });
+ expect(selectProviderRetry(cleared)).toBeNull();
+ });
+});
+
+describe("foldEvent — user-message (the turn's user prompt; backend CR-3)", () => {
+ const userMessage = (text: string): TurnInputEvent => ({
+ type: "user-message",
+ conversationId: "c1",
+ turnId: "t1",
+ text,
+ });
+
+ it("a watcher renders the prompt: appends a provisional user chunk + marks generating", () => {
+ let s = initialState();
+ s = foldEvent(s, userMessage("what is 2+2?"));
+ const chunks = selectChunks(s);
+ expect(chunks).toHaveLength(1);
+ expect(chunks[0]?.role).toBe("user");
+ expect(chunks[0]?.chunk).toEqual({ type: "text", text: "what is 2+2?" });
+ expect(chunks[0]?.provisional).toBe(true);
+ expect(s.generating).toBe(true);
+ });
+
+ it("dedups the SENDER's optimistic echo (no duplicate user bubble)", () => {
+ let s = initialState();
+ s = appendUserMessage(s, "hi"); // optimistic echo from the sender's send()
+ s = foldEvent(s, userMessage("hi")); // server echo for the same turn
+ const users = selectChunks(s).filter((c) => c.role === "user");
+ expect(users).toHaveLength(1);
+ });
+
+ it("appends when the trailing provisional differs (no false dedup)", () => {
+ let s = initialState();
+ s = appendUserMessage(s, "first");
+ s = foldEvent(s, userMessage("second"));
+ const users = selectChunks(s).filter((c) => c.role === "user");
+ expect(users).toHaveLength(2);
+ });
+
+ it("ignores an empty user-message", () => {
+ let s = initialState();
+ s = foldEvent(s, userMessage(""));
+ expect(selectChunks(s)).toHaveLength(0);
+ expect(s.generating).toBe(false);
+ });
+
+ it("flushes an accumulating chunk before appending the prompt", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, textDelta("t1", "partial"));
+ s = foldEvent(s, userMessage("new prompt"));
+ // the partial assistant text was flushed to provisional, then the user prompt appended
+ expect(s.accumulating).toBeNull();
+ const roles = selectChunks(s).map((c) => c.role);
+ expect(roles).toEqual(["assistant", "user"]);
+ });
+});
+
+describe("foldEvent — steering (mid-turn steering injection)", () => {
+ const steering = (text: string): TurnSteeringEvent => ({
+ type: "steering",
+ conversationId: "c1",
+ turnId: "t1",
+ text,
+ });
+
+ it("appends a provisional user bubble + keeps generating", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, toolResult("t1", "tc1", "read", "output"));
+ s = foldEvent(s, steering("actually, use a different file"));
+ const chunks = selectChunks(s);
+ const last = chunks[chunks.length - 1];
+ expect(last?.role).toBe("user");
+ expect(last?.chunk).toEqual({ type: "text", text: "actually, use a different file" });
+ expect(last?.provisional).toBe(true);
+ expect(s.generating).toBe(true);
+ });
+
+ it("does NOT dedup against the sender's queue (unlike user-message)", () => {
+ // The sender enqueued the message via `chat.queue` — the queue SURFACE
+ // showed it. The `steering` event places it in the transcript; the surface
+ // separately clears on drain. No de-dup here (the transcript never showed
+ // the queued message).
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, steering("steer once"));
+ s = foldEvent(s, steering("steer again"));
+ const users = selectChunks(s).filter((c) => c.role === "user");
+ expect(users).toHaveLength(2);
+ });
+
+ it("ignores an empty steering event", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, steering(""));
+ expect(selectChunks(s)).toHaveLength(0);
+ expect(s.generating).toBe(true); // turn-start already set it
+ });
+
+ it("flushes an accumulating chunk before appending the steering bubble", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, textDelta("t1", "partial response"));
+ s = foldEvent(s, steering("mid-turn correction"));
+ expect(s.accumulating).toBeNull();
+ const roles = selectChunks(s).map((c) => c.role);
+ expect(roles).toEqual(["assistant", "user"]);
+ });
});
describe("applyHistory", () => {
- it("orders committed chunks by seq", () => {
- const s = initialState();
- const chunks = [
- storedChunk(3, "assistant", { type: "text", text: "c" }),
- storedChunk(1, "user", { type: "text", text: "a" }),
- storedChunk(2, "assistant", { type: "text", text: "b" }),
- ];
- const next = applyHistory(s, chunks);
- expect(next.committed.map((c) => c.seq)).toEqual([1, 2, 3]);
- });
-
- it("is idempotent on duplicate seqs", () => {
- let s = initialState();
- const batch1 = [
- storedChunk(1, "user", { type: "text", text: "a" }),
- storedChunk(2, "assistant", { type: "text", text: "b" }),
- ];
- s = applyHistory(s, batch1);
- const batch2 = [
- storedChunk(2, "assistant", { type: "text", text: "b" }),
- storedChunk(3, "assistant", { type: "text", text: "c" }),
- ];
- s = applyHistory(s, batch2);
- expect(s.committed.map((c) => c.seq)).toEqual([1, 2, 3]);
- expect(s.committed).toHaveLength(3);
- });
-
- it("supersedes & clears provisional once committed", () => {
- let s = initialState();
- s = foldEvent(s, turnStart("t1"));
- s = foldEvent(s, textDelta("t1", "hello"));
- s = foldEvent(s, turnSealed("t1"));
- expect(s.provisional).toHaveLength(1);
- expect(s.sealedTurnId).toBe("t1");
-
- s = applyHistory(s, [storedChunk(1, "assistant", { type: "text", text: "hello" })]);
- expect(s.provisional).toEqual([]);
- expect(s.accumulating).toBeNull();
- expect(s.sealedTurnId).toBeNull();
- expect(s.committed).toHaveLength(1);
- });
-
- it("keeps provisional and accumulating when sealedTurnId is null", () => {
- let s = initialState();
- s = foldEvent(s, turnStart("t1"));
- s = foldEvent(s, textDelta("t1", "wip"));
- s = foldEvent(s, doneEvent("t1"));
- s = applyHistory(s, [storedChunk(1, "user", { type: "text", text: "q" })]);
- expect(s.provisional).toHaveLength(1);
- expect(s.committed).toHaveLength(1);
- });
-
- it("merges new history into existing committed", () => {
- let s = initialState();
- s = applyHistory(s, [storedChunk(1, "user", { type: "text", text: "a" })]);
- s = applyHistory(s, [storedChunk(2, "assistant", { type: "text", text: "b" })]);
- expect(s.committed).toHaveLength(2);
- expect(s.committed.map((c) => c.seq)).toEqual([1, 2]);
- });
+ it("orders committed chunks by seq", () => {
+ const s = initialState();
+ const chunks = [
+ storedChunk(3, "assistant", { type: "text", text: "c" }),
+ storedChunk(1, "user", { type: "text", text: "a" }),
+ storedChunk(2, "assistant", { type: "text", text: "b" }),
+ ];
+ const next = applyHistory(s, chunks);
+ expect(next.committed.map((c) => c.seq)).toEqual([1, 2, 3]);
+ });
+
+ it("is idempotent on duplicate seqs", () => {
+ let s = initialState();
+ const batch1 = [
+ storedChunk(1, "user", { type: "text", text: "a" }),
+ storedChunk(2, "assistant", { type: "text", text: "b" }),
+ ];
+ s = applyHistory(s, batch1);
+ const batch2 = [
+ storedChunk(2, "assistant", { type: "text", text: "b" }),
+ storedChunk(3, "assistant", { type: "text", text: "c" }),
+ ];
+ s = applyHistory(s, batch2);
+ expect(s.committed.map((c) => c.seq)).toEqual([1, 2, 3]);
+ expect(s.committed).toHaveLength(3);
+ });
+
+ it("supersedes & clears provisional once committed", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, textDelta("t1", "hello"));
+ s = foldEvent(s, turnSealed("t1"));
+ expect(s.provisional).toHaveLength(1);
+ expect(s.sealedTurnId).toBe("t1");
+
+ s = applyHistory(s, [storedChunk(1, "assistant", { type: "text", text: "hello" })]);
+ expect(s.provisional).toEqual([]);
+ expect(s.accumulating).toBeNull();
+ expect(s.sealedTurnId).toBeNull();
+ expect(s.committed).toHaveLength(1);
+ });
+
+ it("keeps provisional and accumulating when sealedTurnId is null", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, textDelta("t1", "wip"));
+ s = foldEvent(s, doneEvent("t1"));
+ s = applyHistory(s, [storedChunk(1, "user", { type: "text", text: "q" })]);
+ expect(s.provisional).toHaveLength(1);
+ expect(s.committed).toHaveLength(1);
+ });
+
+ it("merges new history into existing committed", () => {
+ let s = initialState();
+ s = applyHistory(s, [storedChunk(1, "user", { type: "text", text: "a" })]);
+ s = applyHistory(s, [storedChunk(2, "assistant", { type: "text", text: "b" })]);
+ expect(s.committed).toHaveLength(2);
+ expect(s.committed.map((c) => c.seq)).toEqual([1, 2]);
+ });
+
+ it("removes provisional duplicate when committed user message arrives during generation", () => {
+ // Simulate: send() appends provisional user message, then syncTail
+ // fetches the same message as committed (CR-6: persisted at turn start).
+ let s = initialState();
+ s = appendUserMessage(s, "hello");
+ s = foldEvent(s, turnStart("t1"));
+ expect(s.provisional).toHaveLength(1);
+ expect(s.provisional[0]?.role).toBe("user");
+ expect(s.generating).toBe(true);
+
+ // syncTail fetches the persisted user message as committed
+ s = applyHistory(s, [storedChunk(1, "user", { type: "text", text: "hello" })]);
+
+ // The provisional duplicate is removed — no double render
+ expect(s.provisional).toEqual([]);
+ expect(s.committed).toHaveLength(1);
+ expect(s.committed[0]?.role).toBe("user");
+ expect(s.committed[0]?.chunk).toEqual({ type: "text", text: "hello" });
+ });
});
describe("selectChunks", () => {
- it("selectChunks marks provisional with seq null", () => {
- let s = initialState();
- s = applyHistory(s, [storedChunk(1, "user", { type: "text", text: "q" })]);
- s = foldEvent(s, turnStart("t1"));
- s = foldEvent(s, textDelta("t1", "wip"));
- const chunks = selectChunks(s);
- expect(chunks).toHaveLength(2);
- expect(chunks[0]?.seq).toBe(1);
- expect(chunks[0]?.provisional).toBe(false);
- expect(chunks[1]?.seq).toBeNull();
- expect(chunks[1]?.provisional).toBe(true);
- });
-
- it("returns empty for empty state", () => {
- expect(selectChunks(initialState())).toEqual([]);
- });
-
- it("includes accumulating chunk as provisional", () => {
- let s = initialState();
- s = foldEvent(s, turnStart("t1"));
- s = foldEvent(s, textDelta("t1", "building..."));
- const chunks = selectChunks(s);
- expect(chunks).toHaveLength(1);
- expect(chunks[0]?.seq).toBeNull();
- expect(chunks[0]?.provisional).toBe(true);
- expect(chunks[0]?.chunk).toEqual({ type: "text", text: "building..." });
- });
+ it("selectChunks marks provisional with seq null", () => {
+ let s = initialState();
+ s = applyHistory(s, [storedChunk(1, "user", { type: "text", text: "q" })]);
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, textDelta("t1", "wip"));
+ const chunks = selectChunks(s);
+ expect(chunks).toHaveLength(2);
+ expect(chunks[0]?.seq).toBe(1);
+ expect(chunks[0]?.provisional).toBe(false);
+ expect(chunks[1]?.seq).toBeNull();
+ expect(chunks[1]?.provisional).toBe(true);
+ });
+
+ it("returns empty for empty state", () => {
+ expect(selectChunks(initialState())).toEqual([]);
+ });
+
+ it("includes accumulating chunk as provisional", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, textDelta("t1", "building..."));
+ const chunks = selectChunks(s);
+ expect(chunks).toHaveLength(1);
+ expect(chunks[0]?.seq).toBeNull();
+ expect(chunks[0]?.provisional).toBe(true);
+ expect(chunks[0]?.chunk).toEqual({ type: "text", text: "building..." });
+ });
+
+ it("marks ONLY the actively-accumulating chunk as streaming", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ // A flushed-but-still-provisional thinking chunk, then a live accumulating one.
+ s = foldEvent(s, reasoningDelta("t1", "first thought"));
+ s = foldEvent(s, toolCall("t1", "tc1", "bash", {})); // flushes the thinking
+ s = foldEvent(s, textDelta("t1", "now writing"));
+ const chunks = selectChunks(s);
+ const thinking = chunks.find((c) => c.chunk.type === "thinking");
+ const accumulating = chunks.find((c) => c.streaming === true);
+ expect(thinking?.streaming).toBeFalsy(); // flushed → not streaming
+ expect(accumulating?.chunk).toEqual({ type: "text", text: "now writing" });
+ expect(chunks.filter((c) => c.streaming === true)).toHaveLength(1);
+ });
});
describe("selectMessages", () => {
- it("selectMessages groups consecutive same-role chunks", () => {
- let s = initialState();
- s = applyHistory(s, [
- storedChunk(1, "user", { type: "text", text: "q1" }),
- storedChunk(2, "user", { type: "text", text: "q2" }),
- storedChunk(3, "assistant", { type: "text", text: "a1" }),
- storedChunk(4, "assistant", { type: "text", text: "a2" }),
- storedChunk(5, "user", { type: "text", text: "q3" }),
- ]);
- const msgs = selectMessages(s);
- expect(msgs).toHaveLength(3);
- expect(msgs[0]?.role).toBe("user");
- expect(msgs[0]?.chunks).toHaveLength(2);
- expect(msgs[1]?.role).toBe("assistant");
- expect(msgs[1]?.chunks).toHaveLength(2);
- expect(msgs[2]?.role).toBe("user");
- expect(msgs[2]?.chunks).toHaveLength(1);
- });
-
- it("returns empty for empty state", () => {
- expect(selectMessages(initialState())).toEqual([]);
- });
-
- it("mixes committed and provisional in messages", () => {
- let s = initialState();
- s = applyHistory(s, [storedChunk(1, "user", { type: "text", text: "q" })]);
- s = foldEvent(s, turnStart("t1"));
- s = foldEvent(s, textDelta("t1", "a1"));
- s = foldEvent(s, textDelta("t1", "a2"));
- const msgs = selectMessages(s);
- expect(msgs).toHaveLength(2);
- expect(msgs[0]?.role).toBe("user");
- expect(msgs[0]?.chunks).toHaveLength(1);
- expect(msgs[1]?.role).toBe("assistant");
- expect(msgs[1]?.chunks).toHaveLength(1);
- expect(msgs[1]?.chunks[0]).toEqual({ type: "text", text: "a1a2" });
- });
+ it("selectMessages groups consecutive same-role chunks", () => {
+ let s = initialState();
+ s = applyHistory(s, [
+ storedChunk(1, "user", { type: "text", text: "q1" }),
+ storedChunk(2, "user", { type: "text", text: "q2" }),
+ storedChunk(3, "assistant", { type: "text", text: "a1" }),
+ storedChunk(4, "assistant", { type: "text", text: "a2" }),
+ storedChunk(5, "user", { type: "text", text: "q3" }),
+ ]);
+ const msgs = selectMessages(s);
+ expect(msgs).toHaveLength(3);
+ expect(msgs[0]?.role).toBe("user");
+ expect(msgs[0]?.chunks).toHaveLength(2);
+ expect(msgs[1]?.role).toBe("assistant");
+ expect(msgs[1]?.chunks).toHaveLength(2);
+ expect(msgs[2]?.role).toBe("user");
+ expect(msgs[2]?.chunks).toHaveLength(1);
+ });
+
+ it("returns empty for empty state", () => {
+ expect(selectMessages(initialState())).toEqual([]);
+ });
+
+ it("mixes committed and provisional in messages", () => {
+ let s = initialState();
+ s = applyHistory(s, [storedChunk(1, "user", { type: "text", text: "q" })]);
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, textDelta("t1", "a1"));
+ s = foldEvent(s, textDelta("t1", "a2"));
+ const msgs = selectMessages(s);
+ expect(msgs).toHaveLength(2);
+ expect(msgs[0]?.role).toBe("user");
+ expect(msgs[0]?.chunks).toHaveLength(1);
+ expect(msgs[1]?.role).toBe("assistant");
+ expect(msgs[1]?.chunks).toHaveLength(1);
+ expect(msgs[1]?.chunks[0]).toEqual({ type: "text", text: "a1a2" });
+ });
});
describe("appendUserMessage", () => {
- it("adds a provisional user text chunk", () => {
- let s = initialState();
- s = appendUserMessage(s, "hello from user");
- const chunks = selectChunks(s);
- expect(chunks).toHaveLength(1);
- expect(chunks[0]?.seq).toBeNull();
- expect(chunks[0]?.role).toBe("user");
- expect(chunks[0]?.chunk).toEqual({ type: "text", text: "hello from user" });
- expect(chunks[0]?.provisional).toBe(true);
- });
-
- it("selectMessages includes the optimistic user message", () => {
- let s = initialState();
- s = appendUserMessage(s, "what is 2+2?");
- const msgs = selectMessages(s);
- expect(msgs).toHaveLength(1);
- expect(msgs[0]?.role).toBe("user");
- expect(msgs[0]?.chunks).toHaveLength(1);
- expect(msgs[0]?.chunks[0]).toEqual({ type: "text", text: "what is 2+2?" });
- });
-
- it("user echo then turn-sealed + applyHistory supersedes the provisional user chunk", () => {
- let s = initialState();
- s = appendUserMessage(s, "hi");
- expect(selectChunks(s)).toHaveLength(1);
-
- s = foldEvent(s, turnStart("t1"));
- s = foldEvent(s, textDelta("t1", "hello back"));
- s = foldEvent(s, turnSealed("t1"));
- s = applyHistory(s, [
- storedChunk(1, "user", { type: "text", text: "hi" }),
- storedChunk(2, "assistant", { type: "text", text: "hello back" }),
- ]);
- const chunks = selectChunks(s);
- expect(chunks).toHaveLength(2);
- expect(chunks[0]?.seq).toBe(1);
- expect(chunks[0]?.role).toBe("user");
- expect(chunks[0]?.chunk).toEqual({ type: "text", text: "hi" });
- expect(chunks[0]?.provisional).toBe(false);
- expect(chunks[1]?.seq).toBe(2);
- expect(chunks[1]?.role).toBe("assistant");
- expect(chunks[1]?.provisional).toBe(false);
- });
-
- it("flushes accumulating chunk before appending user message", () => {
- let s = initialState();
- s = foldEvent(s, turnStart("t1"));
- s = foldEvent(s, textDelta("t1", "partial"));
- expect(s.accumulating).toEqual({ kind: "text", text: "partial" });
-
- s = appendUserMessage(s, "user msg");
- expect(s.accumulating).toBeNull();
- expect(s.provisional).toHaveLength(2);
- expect(s.provisional[0]?.role).toBe("assistant");
- expect(s.provisional[0]?.chunk).toEqual({ type: "text", text: "partial" });
- expect(s.provisional[1]?.role).toBe("user");
- expect(s.provisional[1]?.chunk).toEqual({ type: "text", text: "user msg" });
- });
+ it("adds a provisional user text chunk", () => {
+ let s = initialState();
+ s = appendUserMessage(s, "hello from user");
+ const chunks = selectChunks(s);
+ expect(chunks).toHaveLength(1);
+ expect(chunks[0]?.seq).toBeNull();
+ expect(chunks[0]?.role).toBe("user");
+ expect(chunks[0]?.chunk).toEqual({ type: "text", text: "hello from user" });
+ expect(chunks[0]?.provisional).toBe(true);
+ });
+
+ it("selectMessages includes the optimistic user message", () => {
+ let s = initialState();
+ s = appendUserMessage(s, "what is 2+2?");
+ const msgs = selectMessages(s);
+ expect(msgs).toHaveLength(1);
+ expect(msgs[0]?.role).toBe("user");
+ expect(msgs[0]?.chunks).toHaveLength(1);
+ expect(msgs[0]?.chunks[0]).toEqual({ type: "text", text: "what is 2+2?" });
+ });
+
+ it("user echo then turn-sealed + applyHistory supersedes the provisional user chunk", () => {
+ let s = initialState();
+ s = appendUserMessage(s, "hi");
+ expect(selectChunks(s)).toHaveLength(1);
+
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, textDelta("t1", "hello back"));
+ s = foldEvent(s, turnSealed("t1"));
+ s = applyHistory(s, [
+ storedChunk(1, "user", { type: "text", text: "hi" }),
+ storedChunk(2, "assistant", { type: "text", text: "hello back" }),
+ ]);
+ const chunks = selectChunks(s);
+ expect(chunks).toHaveLength(2);
+ expect(chunks[0]?.seq).toBe(1);
+ expect(chunks[0]?.role).toBe("user");
+ expect(chunks[0]?.chunk).toEqual({ type: "text", text: "hi" });
+ expect(chunks[0]?.provisional).toBe(false);
+ expect(chunks[1]?.seq).toBe(2);
+ expect(chunks[1]?.role).toBe("assistant");
+ expect(chunks[1]?.provisional).toBe(false);
+ });
+
+ it("flushes accumulating chunk before appending user message", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, textDelta("t1", "partial"));
+ expect(s.accumulating).toEqual({ kind: "text", text: "partial" });
+
+ s = appendUserMessage(s, "user msg");
+ expect(s.accumulating).toBeNull();
+ expect(s.provisional).toHaveLength(2);
+ expect(s.provisional[0]?.role).toBe("assistant");
+ expect(s.provisional[0]?.chunk).toEqual({ type: "text", text: "partial" });
+ expect(s.provisional[1]?.role).toBe("user");
+ expect(s.provisional[1]?.chunk).toEqual({ type: "text", text: "user msg" });
+ });
+});
+
+const PNG = "data:image/png;base64,AAAA";
+const JPG = "data:image/jpeg;base64,BBBB";
+
+describe("appendUserMessage — images (vision handoff)", () => {
+ it("echoes text then image chunks in order", () => {
+ const images: ImageInput[] = [
+ { url: PNG, mimeType: "image/png" },
+ { url: JPG, mimeType: "image/jpeg" },
+ ];
+ let s = initialState();
+ s = appendUserMessage(s, "what's this?", images);
+ const chunks = selectChunks(s);
+ expect(chunks).toHaveLength(3);
+ expect(chunks[0]?.role).toBe("user");
+ expect(chunks[0]?.chunk).toEqual({ type: "text", text: "what's this?" });
+ expect(chunks[1]?.chunk).toEqual({ type: "image", url: PNG, mimeType: "image/png" });
+ expect(chunks[2]?.chunk).toEqual({ type: "image", url: JPG, mimeType: "image/jpeg" });
+ expect(chunks.every((c) => c.provisional && c.seq === null)).toBe(true);
+ });
+
+ it("omits mimeType when not provided", () => {
+ let s = initialState();
+ s = appendUserMessage(s, "look", [{ url: PNG }]);
+ const img = selectChunks(s)[1]?.chunk;
+ expect(img).toEqual({ type: "image", url: PNG });
+ expect(img).not.toHaveProperty("mimeType");
+ });
+
+ it("echoes images-only when text is empty (no text chunk)", () => {
+ let s = initialState();
+ s = appendUserMessage(s, "", [{ url: PNG, mimeType: "image/png" }]);
+ const chunks = selectChunks(s);
+ expect(chunks).toHaveLength(1);
+ expect(chunks[0]?.chunk.type).toBe("image");
+ });
+
+ it("echoes nothing for empty text + empty images", () => {
+ let s = initialState();
+ s = foldEvent(s, turnStart("t1"));
+ s = foldEvent(s, textDelta("t1", "partial"));
+ s = appendUserMessage(s, "", []);
+ // Defensive flush still happened; no user chunk added.
+ const users = selectChunks(s).filter((c) => c.role === "user");
+ expect(users).toHaveLength(0);
+ expect(s.accumulating).toBeNull();
+ });
+
+ it("skips images with an empty url", () => {
+ let s = initialState();
+ s = appendUserMessage(s, "hi", [
+ { url: "", mimeType: "image/png" },
+ { url: PNG, mimeType: "image/png" },
+ ]);
+ const chunks = selectChunks(s);
+ expect(chunks).toHaveLength(2); // text + the one valid image
+ expect(chunks[1]?.chunk.type).toBe("image");
+ });
+
+ it("groups text + images into one user ChatMessage", () => {
+ let s = initialState();
+ s = appendUserMessage(s, "see this", [{ url: PNG }]);
+ const msgs = selectMessages(s);
+ expect(msgs).toHaveLength(1);
+ expect(msgs[0]?.role).toBe("user");
+ expect(msgs[0]?.chunks).toHaveLength(2);
+ });
+});
+
+describe("foldEvent — user-message dedups against a text+image echo", () => {
+ const userMessage = (text: string): TurnInputEvent => ({
+ type: "user-message",
+ conversationId: "c1",
+ turnId: "t1",
+ text,
+ });
+
+ it("does not duplicate the text when images follow it in the echo", () => {
+ let s = initialState();
+ s = appendUserMessage(s, "hi", [{ url: PNG, mimeType: "image/png" }]);
+ expect(selectChunks(s)).toHaveLength(2); // text + image
+ s = foldEvent(s, userMessage("hi"));
+ const users = selectChunks(s).filter((c) => c.role === "user");
+ expect(users).toHaveLength(2); // unchanged — no duplicate text
+ expect(users[0]?.chunk.type).toBe("text");
+ expect(users[1]?.chunk.type).toBe("image");
+ expect(s.generating).toBe(true);
+ });
+
+ it("still appends when the echoed text differs", () => {
+ let s = initialState();
+ s = appendUserMessage(s, "first", [{ url: PNG }]);
+ s = foldEvent(s, userMessage("second"));
+ const users = selectChunks(s).filter((c) => c.role === "user");
+ expect(users.filter((c) => c.chunk.type === "text")).toHaveLength(2);
+ });
+});
+
+describe("applyHistory — multi-chunk image echo is superseded by committed", () => {
+ it("drops the provisional [text, image] echo when committed arrives during generation", () => {
+ let s = initialState();
+ s = appendUserMessage(s, "hi", [{ url: PNG, mimeType: "image/png" }]);
+ s = foldEvent(s, turnStart("t1"));
+ expect(s.provisional).toHaveLength(2);
+
+ s = applyHistory(s, [
+ storedChunk(1, "user", { type: "text", text: "hi" }),
+ storedChunk(2, "user", { type: "image", url: PNG, mimeType: "image/png" }),
+ ]);
+ expect(s.provisional).toEqual([]);
+ expect(s.committed).toHaveLength(2);
+ expect(s.committed[0]?.chunk).toEqual({ type: "text", text: "hi" });
+ expect(s.committed[1]?.chunk).toEqual({ type: "image", url: PNG, mimeType: "image/png" });
+ });
+
+ it("keeps the echo when committed is only a partial match (img not yet persisted)", () => {
+ let s = initialState();
+ s = appendUserMessage(s, "hi", [
+ { url: PNG, mimeType: "image/png" },
+ { url: JPG, mimeType: "image/jpeg" },
+ ]);
+ s = foldEvent(s, turnStart("t1"));
+ // Only the text + first image have been persisted so far.
+ s = applyHistory(s, [
+ storedChunk(1, "user", { type: "text", text: "hi" }),
+ storedChunk(2, "user", { type: "image", url: PNG, mimeType: "image/png" }),
+ ]);
+ // Echo is [text, img1, img2]; committed run is [text, img1] — not a full
+ // match (echo is longer) → keep the echo (turn-seal will drop it wholesale).
+ expect(s.provisional.length).toBeGreaterThan(0);
+ });
+
+ it("renders committed image chunks from history (a non-vision transcription turn)", () => {
+ // The server persists the original image chunk AND the transcription text
+ // in the SAME user message: render both (image, then analysis text).
+ let s = initialState();
+ s = applyHistory(s, [
+ storedChunk(1, "user", { type: "text", text: "describe this" }),
+ storedChunk(2, "user", { type: "image", url: PNG, mimeType: "image/png" }),
+ storedChunk(3, "user", {
+ type: "text",
+ text: "[Image analysis (via kimi/k2)]: a red square",
+ }),
+ storedChunk(4, "assistant", { type: "text", text: "the square is red" }),
+ ]);
+ const msgs = selectMessages(s);
+ expect(msgs).toHaveLength(2); // one user message (3 chunks) + one assistant
+ expect(msgs[0]?.role).toBe("user");
+ expect(msgs[0]?.chunks).toHaveLength(3);
+ expect(msgs[0]?.chunks[1]).toEqual({ type: "image", url: PNG, mimeType: "image/png" });
+ });
});
diff --git a/src/core/chunks/reducer.ts b/src/core/chunks/reducer.ts
index d3b999d..64e41b9 100644
--- a/src/core/chunks/reducer.ts
+++ b/src/core/chunks/reducer.ts
@@ -1,26 +1,103 @@
-import type { AgentEvent, Chunk, StoredChunk } from "@dispatch/wire";
+import type { AgentEvent, Chunk, ImageInput, Role, StoredChunk } from "@dispatch/wire";
+import { assertChunkExhaustive } from "../wire/conformance";
import type { AccumulatingChunk, ProvisionalChunk, TranscriptState } from "./types";
/** The initial empty transcript state. */
export function initialState(): TranscriptState {
- return {
- committed: [],
- provisional: [],
- accumulating: null,
- currentTurnId: null,
- latestUsage: null,
- sealedTurnId: null,
- };
+ return {
+ committed: [],
+ provisional: [],
+ accumulating: null,
+ currentTurnId: null,
+ latestUsage: null,
+ sealedTurnId: null,
+ hiddenBeforeSeq: 0,
+ hiddenThinkingCount: 0,
+ generating: false,
+ providerRetry: null,
+ };
+}
+
+/**
+ * Clear the `generating` flag without touching anything else. Used on a WS
+ * (re)connect: a turn may have sealed while we were disconnected, so the live
+ * `turn-sealed`/`done` that would have cleared `generating` was missed. The
+ * caller resets here, then re-subscribes — if the turn is still running the
+ * server's replay re-asserts `generating` via the replayed `turn-start`.
+ */
+export function clearGenerating(state: TranscriptState): TranscriptState {
+ if (!state.generating) return state;
+ // Also drop a stale `provider-retry` banner — a retry pending at disconnect
+ // is stale once we re-subscribe (provider-retry events are not replayed), so
+ // a finished turn must not keep showing a "retrying…" banner forever.
+ return { ...state, generating: false, providerRetry: null };
}
function flushAccumulating(
- provisional: readonly ProvisionalChunk[],
- acc: AccumulatingChunk | null,
+ provisional: readonly ProvisionalChunk[],
+ acc: AccumulatingChunk | null,
+): readonly ProvisionalChunk[] {
+ if (acc === null) return provisional;
+ const chunk: Chunk =
+ acc.kind === "text" ? { type: "text", text: acc.text } : { type: "thinking", text: acc.text };
+ return [...provisional, { role: "assistant", chunk }];
+}
+
+/**
+ * Content equality for two chunks of the SAME role (used to de-dup an
+ * optimistic echo against the authoritative committed version). Compares the
+ * discriminating payload only — `stepId` (generation provenance) is ignored
+ * since it is absent on provisional echoes but present on committed tool chunks.
+ */
+function chunkContentEquals(a: Chunk, b: Chunk): boolean {
+ if (a.type !== b.type) return false;
+ switch (a.type) {
+ case "text": {
+ const o = b as Extract<Chunk, { type: "text" }>;
+ return a.text === o.text;
+ }
+ case "thinking": {
+ const o = b as Extract<Chunk, { type: "thinking" }>;
+ return a.text === o.text;
+ }
+ case "image": {
+ const o = b as Extract<Chunk, { type: "image" }>;
+ return a.url === o.url;
+ }
+ case "error": {
+ const o = b as Extract<Chunk, { type: "error" }>;
+ return a.message === o.message && a.code === o.code;
+ }
+ case "system": {
+ const o = b as Extract<Chunk, { type: "system" }>;
+ return a.text === o.text;
+ }
+ case "tool-call": {
+ const o = b as Extract<Chunk, { type: "tool-call" }>;
+ return a.toolCallId === o.toolCallId && a.toolName === o.toolName;
+ }
+ case "tool-result": {
+ const o = b as Extract<Chunk, { type: "tool-result" }>;
+ return a.toolCallId === o.toolCallId && a.toolName === o.toolName && a.isError === o.isError;
+ }
+ default:
+ return assertChunkExhaustive(a) === assertChunkExhaustive(b);
+ }
+}
+
+/**
+ * The trailing run of consecutive same-role provisional chunks at the end of
+ * `provisional` (the optimistic echo of one message). Returns the start/end
+ * indices `[start, end)` into `provisional` (empty if none).
+ */
+function trailingRun(
+ provisional: readonly ProvisionalChunk[],
+ role: Role,
): readonly ProvisionalChunk[] {
- if (acc === null) return provisional;
- const chunk: Chunk =
- acc.kind === "text" ? { type: "text", text: acc.text } : { type: "thinking", text: acc.text };
- return [...provisional, { role: "assistant", chunk }];
+ const end = provisional.length;
+ let start = end;
+ while (start > 0 && provisional[start - 1]?.role === role) start--;
+ return provisional.slice(start, end);
}
/**
@@ -28,157 +105,342 @@ function flushAccumulating(
* Dedupes by seq (new wins), keeps seq-monotonic order, idempotent.
* When sealedTurnId is set, drops all provisional chunks (now superseded)
* and clears sealedTurnId.
+ *
+ * Chunks below the chat-limit unload watermark (`hiddenBeforeSeq`) are
+ * REJECTED: a full-cache or tail merge must not resurrect what the trim
+ * unloaded. Restoring earlier history goes through `restoreEarlier` instead.
*/
export function applyHistory(
- state: TranscriptState,
- chunks: readonly StoredChunk[],
+ state: TranscriptState,
+ chunks: readonly StoredChunk[],
): TranscriptState {
- const seqMap = new Map<number, StoredChunk>();
- for (const c of state.committed) seqMap.set(c.seq, c);
- for (const c of chunks) seqMap.set(c.seq, c);
- const committed = Array.from(seqMap.values()).sort((a, b) => a.seq - b.seq);
-
- if (state.sealedTurnId !== null) {
- return {
- ...state,
- committed,
- provisional: [],
- accumulating: null,
- sealedTurnId: null,
- };
- }
-
- return { ...state, committed };
+ const seqMap = new Map<number, StoredChunk>();
+ for (const c of state.committed) seqMap.set(c.seq, c);
+ let addedNew = false;
+ for (const c of chunks) {
+ if (c.seq < state.hiddenBeforeSeq) continue;
+ if (!seqMap.has(c.seq)) addedNew = true;
+ seqMap.set(c.seq, c);
+ }
+ const committed = Array.from(seqMap.values()).sort((a, b) => a.seq - b.seq);
+
+ if (state.sealedTurnId !== null) {
+ return {
+ ...state,
+ committed,
+ provisional: [],
+ accumulating: null,
+ sealedTurnId: null,
+ };
+ }
+
+ // During generation: if new committed chunks arrived, the provisional
+ // array may contain duplicates — the optimistic echo from `appendUserMessage`
+ // is now backed by committed chunks (CR-6: user message persisted at turn
+ // start). A user message may be multi-chunk (`[text, image, image, …]`), so
+ // match the trailing provisional user-run against the trailing committed
+ // user-run by content equality and drop the whole echo when it is fully
+ // backed. Leaves the accumulating (streaming) chunk untouched.
+ if (addedNew && state.generating && state.provisional.length > 0) {
+ const provRun = trailingRun(state.provisional, "user");
+ if (provRun.length > 0) {
+ const commRun = trailingRun(committed, "user");
+ // Drop the provisional user echo iff every echoed chunk is content-equal
+ // to the corresponding committed chunk (the server persisted the same
+ // message). A partial match (echo longer than committed) keeps the echo
+ // — the not-yet-committed tail stays until the turn seals.
+ const fullyBacked =
+ commRun.length >= provRun.length &&
+ provRun.every((p, i) => {
+ const c = commRun[i];
+ return c !== undefined && chunkContentEquals(p.chunk, c.chunk);
+ });
+ if (fullyBacked) {
+ const dropStart = state.provisional.length - provRun.length;
+ const provisional = state.provisional.slice(0, dropStart);
+ return { ...state, committed, provisional, accumulating: state.accumulating };
+ }
+ }
+ }
+
+ return { ...state, committed };
}
/**
* Fold one live AgentEvent into the provisional state.
*
* - `turn-start` records the turnId.
+ * - `user-message` appends the turn's user prompt (de-duped vs the sender's
+ * optimistic echo) so a watcher renders it mid-turn.
* - `text-delta` extends the current accumulating TextChunk (or starts one).
* - `reasoning-delta` extends the current accumulating ThinkingChunk (or starts one).
* - `tool-call` / `tool-result` / `error` finalize any accumulating chunk and
* add a new provisional chunk.
+ * - `steering` appends a user bubble mid-turn (drained from the message queue
+ * at a tool-result boundary; the queue surface separately clears on drain).
* - `usage` stores the latest Usage.
* - `done` finalizes any accumulating chunk (turn still provisional).
* - `turn-sealed` finalizes any accumulating chunk and sets sealedTurnId.
* - `status` and `tool-output` are ignored (best-effort no-ops).
+ *
+ * `generating` is folded structurally: a `turn-start` or any content delta sets
+ * it true; `done` / `turn-sealed` / `error` clear it. This is what a watching
+ * (or reconnected) client renders as "generating…", with no dependence on the
+ * free-form `status` event string.
+ *
+ * NOTE: this is the inner reducer. The transient `provider-retry` banner is SET
+ * here (on a `provider-retry` event) but CLEARED by the `foldEvent` wrapper
+ * below, so the clearing logic stays centralized in one place.
*/
+function reduceEvent(state: TranscriptState, event: AgentEvent): TranscriptState {
+ switch (event.type) {
+ case "status":
+ case "tool-output":
+ return state;
+
+ case "turn-start":
+ return { ...state, currentTurnId: event.turnId, generating: true };
+
+ case "user-message": {
+ // The turn's USER prompt, surfaced on the event stream (backend CR-3) so a
+ // WATCHER/late-joiner renders it mid-turn instead of waiting for seal. The
+ // SENDER already echoed its own prompt optimistically (`appendUserMessage`),
+ // so DE-DUP: skip if the trailing provisional USER run already contains an
+ // identical user text chunk. The echo may be multi-chunk (`[text, image,
+ // image, …]` — `appendUserMessage` appends the text first, then images), so
+ // we scan the whole trailing user run, not just the last chunk (which would
+ // be an image when images were pasted). A pure watcher has no such echo →
+ // it appends and renders. The `user-message` event carries ONLY text (never
+ // images — images arrive via history/loadSince); an images-only send (empty
+ // text) emits no `user-message` and is not de-duped here.
+ if (event.text.length === 0) return state;
+ const run = trailingRun(state.provisional, "user");
+ const alreadyEchoed = run.some((p) => p.chunk.type === "text" && p.chunk.text === event.text);
+ if (alreadyEchoed) {
+ return { ...state, generating: true };
+ }
+ const provisional = flushAccumulating(state.provisional, state.accumulating);
+ return {
+ ...state,
+ provisional: [...provisional, { role: "user", chunk: { type: "text", text: event.text } }],
+ accumulating: null,
+ generating: true,
+ };
+ }
+
+ case "text-delta": {
+ const acc = state.accumulating;
+ if (acc !== null && acc.kind === "text") {
+ return {
+ ...state,
+ accumulating: { kind: "text", text: acc.text + event.delta },
+ generating: true,
+ };
+ }
+ const provisional = flushAccumulating(state.provisional, acc);
+ return {
+ ...state,
+ provisional,
+ accumulating: { kind: "text", text: event.delta },
+ generating: true,
+ };
+ }
+
+ case "reasoning-delta": {
+ const acc = state.accumulating;
+ if (acc !== null && acc.kind === "thinking") {
+ return {
+ ...state,
+ accumulating: { kind: "thinking", text: acc.text + event.delta },
+ generating: true,
+ };
+ }
+ const provisional = flushAccumulating(state.provisional, acc);
+ return {
+ ...state,
+ provisional,
+ accumulating: { kind: "thinking", text: event.delta },
+ generating: true,
+ };
+ }
+
+ case "tool-call": {
+ const provisional = flushAccumulating(state.provisional, state.accumulating);
+ const chunk: Chunk = {
+ type: "tool-call",
+ toolCallId: event.toolCallId,
+ toolName: event.toolName,
+ input: event.input,
+ stepId: event.stepId,
+ };
+ return {
+ ...state,
+ provisional: [...provisional, { role: "assistant", chunk }],
+ accumulating: null,
+ generating: true,
+ };
+ }
+
+ case "tool-result": {
+ const provisional = flushAccumulating(state.provisional, state.accumulating);
+ const chunk: Chunk = {
+ type: "tool-result",
+ toolCallId: event.toolCallId,
+ toolName: event.toolName,
+ content: event.content,
+ isError: event.isError,
+ stepId: event.stepId,
+ };
+ return {
+ ...state,
+ provisional: [...provisional, { role: "tool", chunk }],
+ accumulating: null,
+ generating: true,
+ };
+ }
+
+ case "error": {
+ const provisional = flushAccumulating(state.provisional, state.accumulating);
+ const chunk: Chunk =
+ event.code !== undefined
+ ? { type: "error", message: event.message, code: event.code }
+ : { type: "error", message: event.message };
+ return {
+ ...state,
+ provisional: [...provisional, { role: "assistant", chunk }],
+ accumulating: null,
+ generating: false,
+ };
+ }
+
+ case "usage":
+ return { ...state, latestUsage: event.usage };
+
+ case "step-complete":
+ // Timing metadata — no content chunk; handled by the telemetry reducer.
+ return state;
+
+ case "done": {
+ const provisional = flushAccumulating(state.provisional, state.accumulating);
+ return {
+ ...state,
+ provisional,
+ accumulating: null,
+ generating: false,
+ };
+ }
+
+ case "turn-sealed": {
+ const provisional = flushAccumulating(state.provisional, state.accumulating);
+ return {
+ ...state,
+ provisional,
+ accumulating: null,
+ sealedTurnId: event.turnId,
+ generating: false,
+ };
+ }
+
+ case "steering": {
+ // A steering message drained from the queue at a tool-result boundary
+ // (the model sees it alongside the tool results). Append a user bubble
+ // to the provisional transcript; the turn is still in flight. The queue
+ // surface clears separately on drain (a different channel) — no de-dup
+ // here (unlike `user-message`, steering is never optimistically echoed
+ // into the transcript by the sender).
+ if (event.text.length === 0) return state;
+ const provisional = flushAccumulating(state.provisional, state.accumulating);
+ return {
+ ...state,
+ provisional: [...provisional, { role: "user", chunk: { type: "text", text: event.text } }],
+ accumulating: null,
+ generating: true,
+ };
+ }
+
+ case "provider-retry": {
+ // TRANSIENT: a retryable provider error is being retried with backoff.
+ // Coalesce — the latest attempt + delay replaces any previous, so a
+ // single updating "retrying…" banner shows the newest. NOT a chunk: it
+ // never enters provisional/committed, so it can never pollute the prompt
+ // or be replayed on a reload. The turn is still in flight, so `generating`
+ // (already true from `turn-start`) is left untouched.
+ return { ...state, providerRetry: event };
+ }
+ }
+}
+
+/**
+ * Fold one live AgentEvent into the transcript state. Wraps `reduceEvent` to
+ * centralize the TRANSIENT `provider-retry` banner's clearing: the banner is
+ * SET by `reduceEvent` on a `provider-retry` event (coalescing), and CLEARED
+ * here when the model's content resumes (the retry succeeded) or the turn ends
+ * (done/sealed/error) or a new turn starts. Metadata/no-op events
+ * (`status`/`tool-output`/`usage`/`step-complete`) leave a showing banner
+ * untouched. The `state.providerRetry !== null` guard keeps the common path
+ * (no banner pending) identity-stable — no needless new object.
+ */
+// Events that clear a showing provider-retry banner (content resumed or turn ended).
+const RETRY_CLEARING_EVENTS: ReadonlySet<AgentEvent["type"]> = new Set([
+ "turn-start",
+ "text-delta",
+ "reasoning-delta",
+ "tool-call",
+ "tool-result",
+ "error",
+ "done",
+ "turn-sealed",
+]);
+
export function foldEvent(state: TranscriptState, event: AgentEvent): TranscriptState {
- switch (event.type) {
- case "status":
- case "tool-output":
- return state;
-
- case "turn-start":
- return { ...state, currentTurnId: event.turnId };
-
- case "text-delta": {
- const acc = state.accumulating;
- if (acc !== null && acc.kind === "text") {
- return { ...state, accumulating: { kind: "text", text: acc.text + event.delta } };
- }
- const provisional = flushAccumulating(state.provisional, acc);
- return {
- ...state,
- provisional,
- accumulating: { kind: "text", text: event.delta },
- };
- }
-
- case "reasoning-delta": {
- const acc = state.accumulating;
- if (acc !== null && acc.kind === "thinking") {
- return { ...state, accumulating: { kind: "thinking", text: acc.text + event.delta } };
- }
- const provisional = flushAccumulating(state.provisional, acc);
- return {
- ...state,
- provisional,
- accumulating: { kind: "thinking", text: event.delta },
- };
- }
-
- case "tool-call": {
- const provisional = flushAccumulating(state.provisional, state.accumulating);
- const chunk: Chunk = {
- type: "tool-call",
- toolCallId: event.toolCallId,
- toolName: event.toolName,
- input: event.input,
- };
- return {
- ...state,
- provisional: [...provisional, { role: "assistant", chunk }],
- accumulating: null,
- };
- }
-
- case "tool-result": {
- const provisional = flushAccumulating(state.provisional, state.accumulating);
- const chunk: Chunk = {
- type: "tool-result",
- toolCallId: event.toolCallId,
- toolName: event.toolName,
- content: event.content,
- isError: event.isError,
- };
- return {
- ...state,
- provisional: [...provisional, { role: "tool", chunk }],
- accumulating: null,
- };
- }
-
- case "error": {
- const provisional = flushAccumulating(state.provisional, state.accumulating);
- const chunk: Chunk =
- event.code !== undefined
- ? { type: "error", message: event.message, code: event.code }
- : { type: "error", message: event.message };
- return {
- ...state,
- provisional: [...provisional, { role: "assistant", chunk }],
- accumulating: null,
- };
- }
-
- case "usage":
- return { ...state, latestUsage: event.usage };
-
- case "done": {
- const provisional = flushAccumulating(state.provisional, state.accumulating);
- return {
- ...state,
- provisional,
- accumulating: null,
- };
- }
-
- case "turn-sealed": {
- const provisional = flushAccumulating(state.provisional, state.accumulating);
- return {
- ...state,
- provisional,
- accumulating: null,
- sealedTurnId: event.turnId,
- };
- }
- }
+ const next = reduceEvent(state, event);
+ if (event.type === "provider-retry") return next; // set by reduceEvent; not a clearing event
+ if (RETRY_CLEARING_EVENTS.has(event.type) && state.providerRetry !== null) {
+ return { ...next, providerRetry: null };
+ }
+ return next;
}
/**
* Optimistically append a user message to the provisional list.
* Flushes any in-progress accumulating chunk first (defensively).
- * The provisional user chunk is superseded when applyHistory receives
+ * The provisional user chunks are superseded when applyHistory receives
* the authoritative committed chunks after a turn seals.
+ *
+ * When `images` are provided, they are appended AFTER the text chunk (in
+ * order) as `image` chunks — matching the server's persisted layout
+ * (`[text, image, image, …]` in one user message). A text chunk is only
+ * appended when `text` is non-empty (an images-only send echoes just the
+ * images). The `user-message` event carries only text (never images), so its
+ * de-dup scans the trailing user run for the echoed text rather than just the
+ * last chunk.
*/
-export function appendUserMessage(state: TranscriptState, text: string): TranscriptState {
- const provisional = flushAccumulating(state.provisional, state.accumulating);
- const userChunk: Chunk = { type: "text", text };
- return {
- ...state,
- provisional: [...provisional, { role: "user", chunk: userChunk }],
- accumulating: null,
- };
+export function appendUserMessage(
+ state: TranscriptState,
+ text: string,
+ images?: readonly ImageInput[],
+): TranscriptState {
+ const provisional = flushAccumulating(state.provisional, state.accumulating);
+ const userChunks: Chunk[] = [];
+ if (text.length > 0) userChunks.push({ type: "text", text });
+ if (images !== undefined) {
+ for (const img of images) {
+ if (img.url.length === 0) continue;
+ const chunk: Chunk =
+ img.mimeType !== undefined
+ ? { type: "image", url: img.url, mimeType: img.mimeType }
+ : { type: "image", url: img.url };
+ userChunks.push(chunk);
+ }
+ }
+ if (userChunks.length === 0) {
+ // Nothing to echo (empty text + no images) — leave state unchanged but
+ // still flush any accumulating chunk defensively.
+ return { ...state, provisional, accumulating: null };
+ }
+ return {
+ ...state,
+ provisional: [...provisional, ...userChunks.map((chunk) => ({ role: "user", chunk }) as const)],
+ accumulating: null,
+ };
}
diff --git a/src/core/chunks/retry-banner.test.ts b/src/core/chunks/retry-banner.test.ts
new file mode 100644
index 0000000..1d8c1cd
--- /dev/null
+++ b/src/core/chunks/retry-banner.test.ts
@@ -0,0 +1,63 @@
+import type { TurnProviderRetryEvent } from "@dispatch/wire";
+import { describe, expect, it } from "vitest";
+import { formatRetryDelay, viewProviderRetry } from "./retry-banner";
+
+const retry = (
+ attempt: number,
+ delayMs: number,
+ message = "HTTP 429: overloaded",
+ code?: string,
+): TurnProviderRetryEvent =>
+ code !== undefined
+ ? {
+ type: "provider-retry",
+ conversationId: "c1",
+ turnId: "t1",
+ attempt,
+ delayMs,
+ message,
+ code,
+ }
+ : { type: "provider-retry", conversationId: "c1", turnId: "t1", attempt, delayMs, message };
+
+describe("formatRetryDelay", () => {
+ it("formats sub-minute delays as seconds", () => {
+ expect(formatRetryDelay(5000)).toBe("5s");
+ expect(formatRetryDelay(10000)).toBe("10s");
+ expect(formatRetryDelay(30000)).toBe("30s");
+ });
+
+ it("formats minute+ delays as minutes", () => {
+ expect(formatRetryDelay(60000)).toBe("1m");
+ expect(formatRetryDelay(300000)).toBe("5m");
+ expect(formatRetryDelay(1800000)).toBe("30m");
+ });
+
+ it("rounds to the nearest whole unit", () => {
+ expect(formatRetryDelay(5500)).toBe("6s"); // 5.5s -> 6s
+ expect(formatRetryDelay(90000)).toBe("2m"); // 1.5m -> 2m
+ });
+});
+
+describe("viewProviderRetry", () => {
+ it("labels the attempt 1-based (attempt 0 = Retry #1)", () => {
+ expect(viewProviderRetry(retry(0, 5000)).attemptLabel).toBe("Retry #1");
+ expect(viewProviderRetry(retry(1, 10000)).attemptLabel).toBe("Retry #2");
+ expect(viewProviderRetry(retry(7, 1800000)).attemptLabel).toBe("Retry #8");
+ });
+
+ it("derives the delay label from delayMs", () => {
+ expect(viewProviderRetry(retry(0, 5000)).delayLabel).toBe("5s");
+ expect(viewProviderRetry(retry(4, 300000)).delayLabel).toBe("5m");
+ });
+
+ it("passes the endpoint error verbatim", () => {
+ const msg = 'HTTP 429: {"error":{"type":"overloaded_error","message":"overloaded"}}';
+ expect(viewProviderRetry(retry(0, 5000, msg)).message).toBe(msg);
+ });
+
+ it("surfaces the code when present, null when absent", () => {
+ expect(viewProviderRetry(retry(0, 5000, "msg", "429")).code).toBe("429");
+ expect(viewProviderRetry(retry(0, 5000, "msg")).code).toBeNull();
+ });
+});
diff --git a/src/core/chunks/retry-banner.ts b/src/core/chunks/retry-banner.ts
new file mode 100644
index 0000000..afa6a98
--- /dev/null
+++ b/src/core/chunks/retry-banner.ts
@@ -0,0 +1,51 @@
+import type { TurnProviderRetryEvent } from "@dispatch/wire";
+
+/**
+ * Pure view-model for the transient `provider-retry` warning banner. Zero DOM,
+ * zero effects, zero Svelte — mirrors the `core/metrics` view-models the chat UI
+ * already imports. The banner state itself lives in `TranscriptState.providerRetry`
+ * (set/cleared by `foldEvent`); this module only formats an event into render data.
+ *
+ * The "countdown" is a STATIC label derived from `delayMs` (e.g. "retrying in
+ * 5s…"), matching the backend's examples — NOT a live ticking timer (which would
+ * be a component effect and re-render churn). Each new `provider-retry` event
+ * coalesces over the previous, so the banner always shows the newest attempt + delay.
+ */
+
+/** The display shape for a provider-retry banner. */
+export interface ProviderRetryView {
+ /** "Retry #N" — `attempt` is 0-based, so +1 (attempt 0 = "Retry #1"). */
+ readonly attemptLabel: string;
+ /** The scheduled sleep as a short duration: "5s" / "30s" / "1m" / "5m" / "30m". */
+ readonly delayLabel: string;
+ /** The endpoint's error verbatim, e.g. "HTTP 429: {…overloaded_error…}". */
+ readonly message: string;
+ /** The HTTP code when known (e.g. "429"), else null. */
+ readonly code: string | null;
+}
+
+/**
+ * Format a millisecond delay as a short, human-friendly duration. Matches the
+ * backend's backoff schedule (5s→10s→30s→60s→5m→10m→15m→30m): under a minute
+ * shows seconds, under an hour shows minutes, else hours.
+ */
+export function formatRetryDelay(ms: number): string {
+ const totalSeconds = Math.round(ms / 1000);
+ if (totalSeconds < 60) return `${totalSeconds}s`;
+ const totalMinutes = Math.round(totalSeconds / 60);
+ if (totalMinutes < 60) return `${totalMinutes}m`;
+ return `${Math.round(totalMinutes / 60)}h`;
+}
+
+/**
+ * Map a `provider-retry` event to its banner view. `attempt` is 0-based (the Nth
+ * retry about to happen), so the label is 1-based for the user.
+ */
+export function viewProviderRetry(event: TurnProviderRetryEvent): ProviderRetryView {
+ return {
+ attemptLabel: `Retry #${event.attempt + 1}`,
+ delayLabel: formatRetryDelay(event.delayMs),
+ message: event.message,
+ code: event.code ?? null,
+ };
+}
diff --git a/src/core/chunks/selectors.ts b/src/core/chunks/selectors.ts
index 8fb832f..e46d5f5 100644
--- a/src/core/chunks/selectors.ts
+++ b/src/core/chunks/selectors.ts
@@ -1,4 +1,4 @@
-import type { ChatMessage, Chunk } from "@dispatch/wire";
+import type { ChatMessage, Chunk, TurnProviderRetryEvent } from "@dispatch/wire";
import type { RenderedChunk, TranscriptState } from "./types";
/**
@@ -6,46 +6,64 @@ import type { RenderedChunk, TranscriptState } from "./types";
* then provisional (seq: null).
*/
export function selectChunks(state: TranscriptState): readonly RenderedChunk[] {
- const result: RenderedChunk[] = [];
- for (const c of state.committed) {
- result.push({ seq: c.seq, role: c.role, chunk: c.chunk, provisional: false });
- }
- for (const p of state.provisional) {
- result.push({ seq: null, role: p.role, chunk: p.chunk, provisional: true });
- }
- if (state.accumulating !== null) {
- const chunk: Chunk =
- state.accumulating.kind === "text"
- ? { type: "text", text: state.accumulating.text }
- : { type: "thinking", text: state.accumulating.text };
- result.push({ seq: null, role: "assistant", chunk, provisional: true });
- }
- return result;
+ const result: RenderedChunk[] = [];
+ for (const c of state.committed) {
+ result.push({ seq: c.seq, role: c.role, chunk: c.chunk, provisional: false });
+ }
+ for (const p of state.provisional) {
+ result.push({ seq: null, role: p.role, chunk: p.chunk, provisional: true });
+ }
+ if (state.accumulating !== null) {
+ const chunk: Chunk =
+ state.accumulating.kind === "text"
+ ? { type: "text", text: state.accumulating.text }
+ : { type: "thinking", text: state.accumulating.text };
+ result.push({ seq: null, role: "assistant", chunk, provisional: true, streaming: true });
+ }
+ return result;
+}
+
+/**
+ * Whether a turn is currently generating (for a "generating…" indicator). True
+ * for ANY client watching the conversation — the sender, a second device, or a
+ * reconnected client whose in-flight turn was replayed.
+ */
+export function selectGenerating(state: TranscriptState): boolean {
+ return state.generating;
+}
+
+/**
+ * The latest `provider-retry` event for the current turn, or `null` when no retry
+ * is pending. Drives the transient yellow "retrying…" warning banner (rendered
+ * by ChatView). Never persisted — see `TranscriptState.providerRetry`.
+ */
+export function selectProviderRetry(state: TranscriptState): TurnProviderRetryEvent | null {
+ return state.providerRetry;
}
/**
* Group consecutive same-role rendered chunks into ChatMessages.
*/
export function selectMessages(state: TranscriptState): readonly ChatMessage[] {
- const rendered = selectChunks(state);
- const first = rendered[0];
- if (first === undefined) return [];
+ const rendered = selectChunks(state);
+ const first = rendered[0];
+ if (first === undefined) return [];
- const messages: ChatMessage[] = [];
- let role = first.role;
- let chunks: Chunk[] = [first.chunk];
+ const messages: ChatMessage[] = [];
+ let role = first.role;
+ let chunks: Chunk[] = [first.chunk];
- for (let i = 1; i < rendered.length; i++) {
- const rc = rendered[i];
- if (rc === undefined) continue;
- if (rc.role === role) {
- chunks.push(rc.chunk);
- } else {
- messages.push({ role, chunks });
- role = rc.role;
- chunks = [rc.chunk];
- }
- }
- messages.push({ role, chunks });
- return messages;
+ for (let i = 1; i < rendered.length; i++) {
+ const rc = rendered[i];
+ if (rc === undefined) continue;
+ if (rc.role === role) {
+ chunks.push(rc.chunk);
+ } else {
+ messages.push({ role, chunks });
+ role = rc.role;
+ chunks = [rc.chunk];
+ }
+ }
+ messages.push({ role, chunks });
+ return messages;
}
diff --git a/src/core/chunks/trim.test.ts b/src/core/chunks/trim.test.ts
new file mode 100644
index 0000000..7c4bbef
--- /dev/null
+++ b/src/core/chunks/trim.test.ts
@@ -0,0 +1,235 @@
+import type { StoredChunk } from "@dispatch/wire";
+import { describe, expect, it } from "vitest";
+import { applyHistory, initialState } from "./reducer";
+import {
+ DEFAULT_CHAT_LIMIT,
+ initialWindowSize,
+ MAX_CHAT_LIMIT,
+ MIN_CHAT_LIMIT,
+ normalizeChatLimit,
+ restoreEarlier,
+ selectHasEarlier,
+ trimTranscript,
+ unloadCount,
+ windowTranscript,
+} from "./trim";
+import type { TranscriptState } from "./types";
+
+function chunk(seq: number, type: "text" | "thinking" = "text"): StoredChunk {
+ return { seq, role: "assistant", chunk: { type, text: `c${seq}` } };
+}
+
+function chunks(from: number, to: number): StoredChunk[] {
+ const out: StoredChunk[] = [];
+ for (let seq = from; seq <= to; seq++) out.push(chunk(seq));
+ return out;
+}
+
+function stateWith(committed: readonly StoredChunk[]): TranscriptState {
+ return { ...initialState(), committed };
+}
+
+describe("normalizeChatLimit", () => {
+ it("defaults non-numeric / NaN / missing values", () => {
+ expect(normalizeChatLimit(undefined)).toBe(DEFAULT_CHAT_LIMIT);
+ expect(normalizeChatLimit(null)).toBe(DEFAULT_CHAT_LIMIT);
+ expect(normalizeChatLimit("100")).toBe(DEFAULT_CHAT_LIMIT);
+ expect(normalizeChatLimit(Number.NaN)).toBe(DEFAULT_CHAT_LIMIT);
+ expect(normalizeChatLimit(Number.POSITIVE_INFINITY)).toBe(DEFAULT_CHAT_LIMIT);
+ });
+
+ it("floors and clamps numeric values", () => {
+ expect(normalizeChatLimit(100.9)).toBe(100);
+ expect(normalizeChatLimit(0)).toBe(MIN_CHAT_LIMIT);
+ expect(normalizeChatLimit(-5)).toBe(MIN_CHAT_LIMIT);
+ expect(normalizeChatLimit(10_000_000)).toBe(MAX_CHAT_LIMIT);
+ expect(normalizeChatLimit(256)).toBe(256);
+ });
+});
+
+describe("unloadCount / initialWindowSize", () => {
+ it("unload is a quarter of the limit, rounded up", () => {
+ expect(unloadCount(100)).toBe(25);
+ expect(unloadCount(256)).toBe(64);
+ expect(unloadCount(10)).toBe(3);
+ });
+
+ it("initial window is 75% of the limit, rounded down", () => {
+ expect(initialWindowSize(100)).toBe(75);
+ expect(initialWindowSize(256)).toBe(192);
+ expect(initialWindowSize(1)).toBe(1); // never below 1
+ });
+});
+
+describe("trimTranscript", () => {
+ it("is the identity at or under the limit", () => {
+ const at = stateWith(chunks(1, 100));
+ expect(trimTranscript(at, 100)).toBe(at);
+ const under = stateWith(chunks(1, 99));
+ expect(trimTranscript(under, 100)).toBe(under);
+ });
+
+ it("unloads exactly a quarter when the limit is first exceeded (100 → 101 drops 25)", () => {
+ const state = stateWith(chunks(1, 101));
+ const next = trimTranscript(state, 100);
+ expect(next.committed).toHaveLength(76);
+ expect(next.committed[0]?.seq).toBe(26);
+ expect(next.hiddenBeforeSeq).toBe(26);
+ });
+
+ it("unloads multiple quarters when trimming was deferred far past the limit", () => {
+ const state = stateWith(chunks(1, 130));
+ const next = trimTranscript(state, 100);
+ // 130 → needs 2 quarters (25 each) to get to ≤ 100 → 80 remain.
+ expect(next.committed).toHaveLength(80);
+ expect(next.committed[0]?.seq).toBe(51);
+ expect(next.hiddenBeforeSeq).toBe(51);
+ });
+
+ it("counts provisional + accumulating toward the limit (drops committed first)", () => {
+ const base = stateWith(chunks(1, 98));
+ const state: TranscriptState = {
+ ...base,
+ provisional: [
+ { role: "user", chunk: { type: "text", text: "q" } },
+ { role: "assistant", chunk: { type: "text", text: "a" } },
+ ],
+ accumulating: { kind: "text", text: "stream" },
+ };
+ // 98 + 2 + 1 = 101 > 100 → drop 25 committed.
+ const next = trimTranscript(state, 100);
+ expect(next.committed).toHaveLength(73);
+ expect(next.provisional).toHaveLength(2);
+ expect(next.accumulating).not.toBeNull();
+ });
+
+ it("drops oldest provisional when committed is exhausted", () => {
+ const base = stateWith(chunks(1, 2));
+ const provisional = Array.from({ length: 20 }, (_, i) => ({
+ role: "assistant" as const,
+ chunk: { type: "text" as const, text: `p${i}` },
+ }));
+ const state: TranscriptState = { ...base, provisional };
+ // 2 + 20 = 22 > 10. quarter = 3. Drop 2 committed, then drop
+ // ceil((20-10)/3)*3 = 12 provisional → 8 remain.
+ const next = trimTranscript(state, 10);
+ expect(next.committed).toHaveLength(0);
+ expect(next.provisional).toHaveLength(8);
+ expect(next.hiddenBeforeSeq).toBe(3);
+ });
+
+ it("accumulates the hidden thinking count for stable render keys", () => {
+ const committed = [chunk(1, "thinking"), ...chunks(2, 9), chunk(10, "thinking"), chunk(11)];
+ const state = stateWith(committed);
+ const next = trimTranscript(state, 10); // 11 > 10 → drop ceil(10/4)=3 oldest
+ expect(next.committed[0]?.seq).toBe(4);
+ expect(next.hiddenThinkingCount).toBe(1);
+ });
+
+ it("ignores a nonsensical limit", () => {
+ const state = stateWith(chunks(1, 50));
+ expect(trimTranscript(state, 0)).toBe(state);
+ expect(trimTranscript(state, Number.NaN)).toBe(state);
+ });
+});
+
+describe("windowTranscript", () => {
+ it("keeps only the newest maxCommitted chunks and sets the watermark", () => {
+ const state = stateWith(chunks(1, 1000));
+ const next = windowTranscript(state, 75);
+ expect(next.committed).toHaveLength(75);
+ expect(next.committed[0]?.seq).toBe(926);
+ expect(next.hiddenBeforeSeq).toBe(926);
+ expect(selectHasEarlier(next)).toBe(true);
+ });
+
+ it("is the identity within the window", () => {
+ const state = stateWith(chunks(1, 50));
+ expect(windowTranscript(state, 75)).toBe(state);
+ expect(selectHasEarlier(state)).toBe(false);
+ });
+});
+
+describe("applyHistory respects the watermark", () => {
+ it("does not resurrect chunks below hiddenBeforeSeq on a full-cache merge", () => {
+ const trimmed = trimTranscript(stateWith(chunks(1, 101)), 100);
+ expect(trimmed.hiddenBeforeSeq).toBe(26);
+ // A later sync merges the FULL cache (seqs 1..101) — the unloaded prefix must stay out.
+ const merged = applyHistory(trimmed, chunks(1, 101));
+ expect(merged.committed[0]?.seq).toBe(26);
+ expect(merged.committed).toHaveLength(76);
+ });
+
+ it("still merges the tail above the watermark", () => {
+ const trimmed = trimTranscript(stateWith(chunks(1, 101)), 100);
+ const merged = applyHistory(trimmed, chunks(100, 110));
+ expect(merged.committed[merged.committed.length - 1]?.seq).toBe(110);
+ expect(merged.committed[0]?.seq).toBe(26);
+ });
+});
+
+describe("restoreEarlier", () => {
+ it("pages the newest `count` earlier chunks back in and lowers the watermark", () => {
+ const windowed = windowTranscript(stateWith(chunks(1, 1000)), 75); // loaded 926..1000
+ const restored = restoreEarlier(windowed, chunks(1, 1000), 64);
+ expect(restored.committed[0]?.seq).toBe(862);
+ expect(restored.committed).toHaveLength(75 + 64);
+ expect(restored.hiddenBeforeSeq).toBe(862);
+ expect(selectHasEarlier(restored)).toBe(true);
+ });
+
+ it("restoring down to seq 1 reaches the contractual origin (hasEarlier clears)", () => {
+ const windowed = windowTranscript(stateWith(chunks(1, 100)), 75); // hidden: 1..25
+ const restored = restoreEarlier(windowed, chunks(1, 100), 64);
+ expect(restored.committed).toHaveLength(100);
+ expect(restored.committed[0]?.seq).toBe(1);
+ expect(restored.hiddenBeforeSeq).toBe(1); // floor at the origin — inert
+ expect(restored.hiddenThinkingCount).toBe(0);
+ expect(selectHasEarlier(restored)).toBe(false);
+ });
+
+ it("is the identity when nothing older is known locally (server may still hold more)", () => {
+ const windowed = windowTranscript(stateWith(chunks(50, 200)), 75);
+ const restored = restoreEarlier(windowed, [], 64);
+ expect(restored).toBe(windowed);
+ // seqs are 1-based gap-free: window starts at 126 ⇒ older chunks DO exist.
+ expect(selectHasEarlier(restored)).toBe(true);
+ });
+
+ it("is the identity when the window already starts at seq 1", () => {
+ const state = stateWith(chunks(1, 10));
+ expect(restoreEarlier(state, chunks(1, 10), 5)).toBe(state);
+ });
+
+ it("works on a server-windowed transcript (no local watermark)", () => {
+ // A cold-cache fresh load with `?limit=` commits a suffix (seq 809..1000)
+ // with hiddenBeforeSeq still 0 — hasEarlier derives from seq > 1, and a
+ // backfilled run merges below it.
+ const state = stateWith(chunks(809, 1000));
+ expect(state.hiddenBeforeSeq).toBe(0);
+ expect(selectHasEarlier(state)).toBe(true);
+ const restored = restoreEarlier(state, chunks(745, 808), 64);
+ expect(restored.committed[0]?.seq).toBe(745);
+ expect(restored.committed).toHaveLength(192 + 64);
+ expect(restored.hiddenBeforeSeq).toBe(745);
+ expect(selectHasEarlier(restored)).toBe(true);
+ });
+
+ it("decrements the hidden thinking count by the restored thinking chunks", () => {
+ const committed = [chunk(1, "thinking"), chunk(2), chunk(3, "thinking"), ...chunks(4, 12)];
+ const trimmed = trimTranscript(stateWith(committed), 10); // drops 3: seqs 1..3 (2 thinking)
+ expect(trimmed.hiddenThinkingCount).toBe(2);
+ const restored = restoreEarlier(trimmed, committed, 2); // restores seqs 2..3 (1 thinking)
+ expect(restored.hiddenBeforeSeq).toBe(2);
+ expect(restored.hiddenThinkingCount).toBe(1);
+ });
+
+ it("round-trips with trim: trim → restore-all yields the original committed list", () => {
+ const original = chunks(1, 101);
+ const trimmed = trimTranscript(stateWith(original), 100);
+ const restored = restoreEarlier(trimmed, original, 1000);
+ expect(restored.committed).toEqual(original);
+ expect(restored.hiddenBeforeSeq).toBe(1);
+ expect(selectHasEarlier(restored)).toBe(false);
+ });
+});
diff --git a/src/core/chunks/trim.ts b/src/core/chunks/trim.ts
new file mode 100644
index 0000000..9846357
--- /dev/null
+++ b/src/core/chunks/trim.ts
@@ -0,0 +1,185 @@
+// Chat-limit windowing for the transcript — PURE policy, zero DOM/Svelte.
+//
+// In very long conversations an unbounded transcript makes the browser crawl, so
+// the FE keeps at most `chat limit` chunks loaded and UNLOADS the oldest ones in
+// BULK: a quarter of the limit at a time (limit 100 → at 101 chunks it unloads 25,
+// leaving 76). Bulk-on-threshold — NOT one-per-delta like old Dispatch — so a trim
+// happens once per ~quarter-limit of new content instead of on every step, which
+// was the old scroll-jump-per-step failure mode. A fresh page load shows only the
+// newest `floor(0.75 × limit)` chunks, leaving headroom before the first trim.
+//
+// Unloading drops COMMITTED chunks only (provisional chunks are the in-flight
+// turn; they become committed at seal and trimmable then) and records the
+// `hiddenBeforeSeq` watermark so history merges can't resurrect them and the
+// "Show earlier messages" affordance knows where to page back in from.
+
+import type { StoredChunk } from "@dispatch/wire";
+import type { TranscriptState } from "./types";
+
+/** Default chat limit (max loaded chunks per conversation). */
+export const DEFAULT_CHAT_LIMIT = 256;
+/** Hard floor for a configured chat limit (a tiny window would thrash). */
+export const MIN_CHAT_LIMIT = 10;
+/** Hard ceiling for a configured chat limit. */
+export const MAX_CHAT_LIMIT = 100_000;
+
+/**
+ * Normalize an untrusted configured limit (e.g. parsed from localStorage):
+ * non-numeric/NaN → the default; otherwise floored + clamped to
+ * [MIN_CHAT_LIMIT, MAX_CHAT_LIMIT].
+ */
+export function normalizeChatLimit(value: unknown): number {
+ if (typeof value !== "number" || !Number.isFinite(value)) return DEFAULT_CHAT_LIMIT;
+ const n = Math.floor(value);
+ if (n < MIN_CHAT_LIMIT) return MIN_CHAT_LIMIT;
+ if (n > MAX_CHAT_LIMIT) return MAX_CHAT_LIMIT;
+ return n;
+}
+
+/** The bulk-unload unit: a quarter of the limit, rounded up. */
+export function unloadCount(limit: number): number {
+ return Math.ceil(limit / 4);
+}
+
+/** The fresh-load window: 75% of the limit, rounded down (≥ 1). */
+export function initialWindowSize(limit: number): number {
+ return Math.max(1, Math.floor(limit * 0.75));
+}
+
+/** Total loaded (rendered) chunk count: committed + provisional + accumulating. */
+function totalCount(state: TranscriptState): number {
+ return state.committed.length + state.provisional.length + (state.accumulating !== null ? 1 : 0);
+}
+
+function countThinking(chunks: readonly StoredChunk[]): number {
+ let n = 0;
+ for (const c of chunks) {
+ if (c.chunk.type === "thinking") n++;
+ }
+ return n;
+}
+
+/** Drop the `drop` oldest committed chunks, advancing the watermark + thinking base. */
+function dropOldest(state: TranscriptState, drop: number): TranscriptState {
+ const dropped = state.committed.slice(0, drop);
+ const kept = state.committed.slice(drop);
+ const first = kept[0];
+ const lastDropped = dropped[dropped.length - 1];
+ let hiddenBeforeSeq = state.hiddenBeforeSeq;
+ if (first !== undefined) {
+ hiddenBeforeSeq = first.seq;
+ } else if (lastDropped !== undefined) {
+ hiddenBeforeSeq = lastDropped.seq + 1;
+ }
+ return {
+ ...state,
+ committed: kept,
+ hiddenBeforeSeq,
+ hiddenThinkingCount: state.hiddenThinkingCount + countThinking(dropped),
+ };
+}
+
+/**
+ * Enforce the chat limit: when the loaded count EXCEEDS `limit`, unload whole
+ * quarters (`unloadCount(limit)` each) of the OLDEST committed chunks until back
+ * at/under the limit — normally exactly one quarter (limit 100: 101 → 76); more
+ * only when trimming was deferred (e.g. while the reader was scrolled up).
+ * At/under the limit this is the identity. When committed chunks are
+ * exhausted, also drops the oldest provisional chunks (the in-flight turn)
+ * to keep the browser responsive during very long turns.
+ */
+export function trimTranscript(state: TranscriptState, limit: number): TranscriptState {
+ if (!Number.isFinite(limit) || limit <= 0) return state;
+ const total = totalCount(state);
+ if (total <= limit) return state;
+ const quarter = unloadCount(limit);
+ const passes = Math.ceil((total - limit) / quarter);
+
+ // First, drop oldest committed chunks (the usual path).
+ const committedDrop = Math.min(passes * quarter, state.committed.length);
+ let next = committedDrop > 0 ? dropOldest(state, committedDrop) : state;
+
+ // If still over the limit and committed is exhausted, drop oldest
+ // provisional chunks (the in-flight turn). These chunks have no seq
+ // (not yet persisted) and can't be "Show earlier" — but dropping them
+ // keeps the browser responsive. They'll come back as committed when
+ // the turn seals and syncTail fetches them from the server.
+ const remaining = totalCount(next);
+ if (remaining > limit && next.provisional.length > 0) {
+ const provisionalDrop = Math.min(
+ Math.ceil((remaining - limit) / quarter) * quarter,
+ next.provisional.length,
+ );
+ if (provisionalDrop > 0) {
+ next = {
+ ...next,
+ provisional: next.provisional.slice(provisionalDrop),
+ };
+ }
+ }
+
+ return next;
+}
+
+/**
+ * Window the committed history down to the newest `maxCommitted` chunks (the
+ * fresh-load path: `maxCommitted = initialWindowSize(limit)`). Identity when
+ * already within the window.
+ */
+export function windowTranscript(state: TranscriptState, maxCommitted: number): TranscriptState {
+ if (!Number.isFinite(maxCommitted) || maxCommitted < 0) return state;
+ const drop = state.committed.length - maxCommitted;
+ if (drop <= 0) return state;
+ return dropOldest(state, drop);
+}
+
+/**
+ * The oldest LOADED seq — the start of the transcript's loaded window. Usually
+ * `committed[0].seq`; falls back to the watermark when a trim emptied the
+ * committed list (all-provisional overflow). 0 = window start unknown/origin.
+ */
+function oldestLoadedSeq(state: TranscriptState): number {
+ return state.committed[0]?.seq ?? state.hiddenBeforeSeq;
+}
+
+/**
+ * Page earlier history back in — the "Show earlier messages" action.
+ *
+ * `earlier` is every locally-known chunk older than the loaded window
+ * (typically the full cached conversation, possibly extended by a CR-5
+ * `?beforeSeq=` backfill; chunks at/inside the window are ignored). The newest
+ * `count` of them are merged back in front of `committed`, and the watermark
+ * follows the new window start so history merges still can't resurrect what
+ * remains unloaded. Identity when the window already starts at seq 1 (the
+ * contractual origin) or nothing older is known locally.
+ */
+export function restoreEarlier(
+ state: TranscriptState,
+ earlier: readonly StoredChunk[],
+ count: number,
+): TranscriptState {
+ const oldest = oldestLoadedSeq(state);
+ if (oldest <= 1) return state;
+ const below = earlier.filter((c) => c.seq < oldest).sort((a, b) => a.seq - b.seq);
+ if (below.length === 0) return state;
+ const keep = below.slice(-Math.max(1, count));
+ const firstKept = keep[0];
+ return {
+ ...state,
+ committed: [...keep, ...state.committed],
+ hiddenBeforeSeq: firstKept?.seq ?? state.hiddenBeforeSeq,
+ hiddenThinkingCount: Math.max(0, state.hiddenThinkingCount - countThinking(keep)),
+ };
+}
+
+/**
+ * Whether earlier history exists below the loaded window — drives the
+ * "Show earlier messages" affordance. Derived from the [email protected] CONTRACT
+ * that per-conversation seqs are 1-based and gap-free: a loaded window that
+ * starts above seq 1 means older chunks exist (locally cached or server-side),
+ * whether the window came from a local trim or a server-windowed (`?limit=`)
+ * fresh load.
+ */
+export function selectHasEarlier(state: TranscriptState): boolean {
+ return oldestLoadedSeq(state) > 1;
+}
diff --git a/src/core/chunks/types.ts b/src/core/chunks/types.ts
index 3792445..2ced736 100644
--- a/src/core/chunks/types.ts
+++ b/src/core/chunks/types.ts
@@ -1,31 +1,77 @@
-import type { Chunk, Role, StoredChunk, Usage } from "@dispatch/wire";
+import type { Chunk, Role, StoredChunk, TurnProviderRetryEvent, Usage } from "@dispatch/wire";
/** A chunk being accumulated from streaming deltas (text or thinking). */
export interface AccumulatingChunk {
- readonly kind: "text" | "thinking";
- readonly text: string;
+ readonly kind: "text" | "thinking";
+ readonly text: string;
}
/** A provisional chunk that has no authoritative seq yet. */
export interface ProvisionalChunk {
- readonly role: Role;
- readonly chunk: Chunk;
+ readonly role: Role;
+ readonly chunk: Chunk;
}
/** The transcript reducer state. Holds committed history + live in-flight turn. */
export interface TranscriptState {
- readonly committed: readonly StoredChunk[];
- readonly provisional: readonly ProvisionalChunk[];
- readonly accumulating: AccumulatingChunk | null;
- readonly currentTurnId: string | null;
- readonly latestUsage: Usage | null;
- readonly sealedTurnId: string | null;
+ readonly committed: readonly StoredChunk[];
+ readonly provisional: readonly ProvisionalChunk[];
+ readonly accumulating: AccumulatingChunk | null;
+ readonly currentTurnId: string | null;
+ readonly latestUsage: Usage | null;
+ readonly sealedTurnId: string | null;
+ /**
+ * The chat-limit UNLOAD watermark: committed chunks with `seq <` this are
+ * unloaded (not in `committed`, not rendered) to keep long transcripts cheap.
+ * `0` = nothing unloaded. `applyHistory` refuses chunks below it (a cache/tail
+ * merge must not resurrect what the trim dropped); "Show earlier messages"
+ * lowers it via `restoreEarlier`. See `trim.ts`.
+ */
+ readonly hiddenBeforeSeq: number;
+ /**
+ * How many thinking-type chunks are currently unloaded below the watermark.
+ * Pure render-key bookkeeping: the UI keys thinking collapses by ORDINAL (so
+ * the key survives the provisional→committed seal transition), and this base
+ * keeps those ordinals stable when a trim removes older thinking chunks —
+ * otherwise every remaining collapse would shift keys and swap/lose its
+ * open state mid-stream.
+ */
+ readonly hiddenThinkingCount: number;
+ /**
+ * True while a turn is generating on the server — derived STRUCTURALLY from the
+ * event stream: a `turn-start` (or any turn delta) with no matching `done` /
+ * `turn-sealed` / `error` yet. A late-joiner that subscribes mid-turn gets the
+ * in-flight turn replayed from its `turn-start`, so this lights up for any
+ * watching client. NOT inferred from the free-form `status` event string.
+ */
+ readonly generating: boolean;
+ /**
+ * The latest `provider-retry` event for the current turn, or `null` when no
+ * retry is pending. TRANSIENT UI state (never a Chunk — never committed or
+ * provisional, so it can NEVER pollute the model's prompt or be replayed on a
+ * reload/replay of past turns: only committed seq'd chunks are history). Set
+ * by `foldEvent` on each `provider-retry` (the latest coalesces over previous
+ * so a single updating "retrying…" banner shows the newest attempt + delay);
+ * cleared when the model's content resumes (`text-delta`/`reasoning-delta`/
+ * `tool-call`/`tool-result`), the turn ends (`done`/`turn-sealed`/`error`),
+ * or a new turn starts (`turn-start`). Also cleared on a WS reconnect
+ * (`clearGenerating`) — a retry pending at disconnect is stale once we
+ * re-subscribe (provider-retry events are not replayed).
+ */
+ readonly providerRetry: TurnProviderRetryEvent | null;
}
/** A chunk ready for rendering: either committed (with seq) or provisional. */
export interface RenderedChunk {
- readonly seq: number | null;
- readonly role: Role;
- readonly chunk: Chunk;
- readonly provisional: boolean;
+ readonly seq: number | null;
+ readonly role: Role;
+ readonly chunk: Chunk;
+ readonly provisional: boolean;
+ /**
+ * True only for the single chunk currently being accumulated from live deltas
+ * (the in-flight text/thinking the model is actively generating). Absent/false
+ * once flushed or committed. Lets the UI show a live indicator (e.g. loading
+ * dots on streaming thinking) and drop it the moment generation moves on.
+ */
+ readonly streaming?: boolean;
}
diff --git a/src/core/metrics/format.test.ts b/src/core/metrics/format.test.ts
new file mode 100644
index 0000000..97170d0
--- /dev/null
+++ b/src/core/metrics/format.test.ts
@@ -0,0 +1,375 @@
+import type { StepId, StepMetrics, TurnMetrics } from "@dispatch/wire";
+import { describe, expect, it } from "vitest";
+import {
+ computeCachePct,
+ computeContextUsage,
+ computeExpectedCachePct,
+ computeTps,
+ formatCompactTokens,
+ formatContextSize,
+ viewCacheRate,
+ viewExpectedCache,
+ viewStepMetrics,
+ viewTurnMetrics,
+} from "./format";
+
+describe("computeTps", () => {
+ it("null when elapsed missing", () => {
+ expect(computeTps(100, undefined)).toBeNull();
+ });
+
+ it("null when elapsed is zero", () => {
+ expect(computeTps(100, 0)).toBeNull();
+ });
+
+ it("null when elapsed is negative", () => {
+ expect(computeTps(100, -100)).toBeNull();
+ });
+
+ it("computes tokens per second", () => {
+ expect(computeTps(1000, 2000)).toBe(500);
+ });
+
+ it("computes fractional tps", () => {
+ expect(computeTps(100, 3000)).toBeCloseTo(33.33, 1);
+ });
+});
+
+describe("viewStepMetrics", () => {
+ it("formats tokens with thousands separator, tps, and durations", () => {
+ const step: StepMetrics = {
+ stepId: "s1" as StepId,
+ usage: { inputTokens: 1234, outputTokens: 567 },
+ ttftMs: 820,
+ decodeMs: 1200,
+ genTotalMs: 2020,
+ };
+ const view = viewStepMetrics(step, 0);
+ expect(view.label).toBe("step 1");
+ expect(view.tokensLabel).toBe("1,801 tok");
+ expect(view.tps).toBe("473 tok/s");
+ expect(view.ttft).toBe("820ms");
+ expect(view.decode).toBe("1.2s");
+ expect(view.genTotal).toBe("2.0s");
+ });
+
+ it("handles missing timing fields", () => {
+ const step: StepMetrics = {
+ stepId: "s1" as StepId,
+ usage: { inputTokens: 100, outputTokens: 50 },
+ };
+ const view = viewStepMetrics(step, 0);
+ expect(view.tps).toBeNull();
+ expect(view.ttft).toBeNull();
+ expect(view.decode).toBeNull();
+ expect(view.genTotal).toBeNull();
+ });
+
+ it("formats duration < 1s as ms", () => {
+ const step: StepMetrics = {
+ stepId: "s1" as StepId,
+ usage: { inputTokens: 10, outputTokens: 5 },
+ ttftMs: 42,
+ };
+ const view = viewStepMetrics(step, 0);
+ expect(view.ttft).toBe("42ms");
+ });
+
+ it("formats duration >= 1s as seconds", () => {
+ const step: StepMetrics = {
+ stepId: "s1" as StepId,
+ usage: { inputTokens: 10, outputTokens: 5 },
+ genTotalMs: 3200,
+ };
+ const view = viewStepMetrics(step, 0);
+ expect(view.genTotal).toBe("3.2s");
+ });
+
+ it("uses step index for label", () => {
+ const step: StepMetrics = {
+ stepId: "s1" as StepId,
+ usage: { inputTokens: 10, outputTokens: 5 },
+ };
+ expect(viewStepMetrics(step, 2).label).toBe("step 3");
+ });
+
+ it("tps uses decodeMs (not genTotalMs)", () => {
+ const step: StepMetrics = {
+ stepId: "s1" as StepId,
+ usage: { inputTokens: 100, outputTokens: 50 },
+ decodeMs: 500,
+ genTotalMs: 800,
+ };
+ const view = viewStepMetrics(step, 0);
+ // 50 / (500/1000) = 100 tok/s, NOT 50/(800/1000)=62.5
+ expect(view.tps).toBe("100 tok/s");
+ });
+
+ it("tps falls back to genTotalMs when decodeMs absent", () => {
+ const step: StepMetrics = {
+ stepId: "s1" as StepId,
+ usage: { inputTokens: 100, outputTokens: 50 },
+ genTotalMs: 800,
+ };
+ const view = viewStepMetrics(step, 0);
+ // 50 / (800/1000) = 62.5 → rounds to 63
+ expect(view.tps).toBe("63 tok/s");
+ });
+});
+
+describe("viewTurnMetrics", () => {
+ it("formats total tokens and breakdown", () => {
+ const turn: TurnMetrics = {
+ turnId: "t1",
+ usage: { inputTokens: 1000, outputTokens: 234 },
+ durationMs: 5000,
+ steps: [
+ {
+ stepId: "s1" as StepId,
+ usage: { inputTokens: 1000, outputTokens: 234 },
+ decodeMs: 3000,
+ genTotalMs: 4000,
+ },
+ ],
+ };
+ const view = viewTurnMetrics(turn);
+ expect(view.tokensLabel).toBe("1,234 tok");
+ expect(view.breakdown).toBe("1,000 in / 234 out");
+ expect(view.tps).toBe("78 tok/s");
+ expect(view.duration).toBe("5.0s");
+ });
+
+ it("breakdown includes cache only when present", () => {
+ const turn: TurnMetrics = {
+ turnId: "t1",
+ usage: { inputTokens: 1000, outputTokens: 234, cacheReadTokens: 500 },
+ steps: [],
+ };
+ const view = viewTurnMetrics(turn);
+ expect(view.breakdown).toBe("1,000 in / 234 out / 500 cache");
+ });
+
+ it("breakdown omits cache when not present", () => {
+ const turn: TurnMetrics = {
+ turnId: "t1",
+ usage: { inputTokens: 100, outputTokens: 50 },
+ steps: [],
+ };
+ const view = viewTurnMetrics(turn);
+ expect(view.breakdown).toBe("100 in / 50 out");
+ });
+
+ it("tps is null when no step has decodeMs or genTotalMs", () => {
+ const turn: TurnMetrics = {
+ turnId: "t1",
+ usage: { inputTokens: 100, outputTokens: 50 },
+ steps: [
+ {
+ stepId: "s1" as StepId,
+ usage: { inputTokens: 100, outputTokens: 50 },
+ },
+ ],
+ };
+ const view = viewTurnMetrics(turn);
+ expect(view.tps).toBeNull();
+ });
+
+ it("duration is null when durationMs absent", () => {
+ const turn: TurnMetrics = {
+ turnId: "t1",
+ usage: { inputTokens: 100, outputTokens: 50 },
+ steps: [],
+ };
+ const view = viewTurnMetrics(turn);
+ expect(view.duration).toBeNull();
+ });
+
+ it("sums decodeMs across steps (fallback genTotalMs per step) for tps", () => {
+ const turn: TurnMetrics = {
+ turnId: "t1",
+ usage: { inputTokens: 300, outputTokens: 150 },
+ steps: [
+ {
+ stepId: "s1" as StepId,
+ usage: { inputTokens: 100, outputTokens: 50 },
+ decodeMs: 800,
+ genTotalMs: 1000,
+ },
+ {
+ stepId: "s2" as StepId,
+ usage: { inputTokens: 200, outputTokens: 100 },
+ genTotalMs: 2000,
+ },
+ ],
+ };
+ const view = viewTurnMetrics(turn);
+ // step1 uses decodeMs=800, step2 falls back to genTotalMs=2000 → total=2800ms
+ // 150 / (2800/1000) = 53.57 → rounds to 54
+ expect(view.tps).toBe("54 tok/s");
+ });
+});
+
+describe("computeCachePct", () => {
+ it("is cacheReadTokens / inputTokens as a rounded percentage", () => {
+ expect(computeCachePct({ inputTokens: 2737, outputTokens: 10, cacheReadTokens: 2560 })).toBe(
+ 94,
+ );
+ expect(computeCachePct({ inputTokens: 2669, outputTokens: 10, cacheReadTokens: 384 })).toBe(14);
+ });
+
+ it("is 0 when cacheReadTokens absent (legitimate miss, not missing data)", () => {
+ expect(computeCachePct({ inputTokens: 1000, outputTokens: 50 })).toBe(0);
+ });
+
+ it("is 0 when there are no input tokens (guard divide-by-zero)", () => {
+ expect(computeCachePct({ inputTokens: 0, outputTokens: 0, cacheReadTokens: 5 })).toBe(0);
+ });
+
+ it("clamps to 100 if read somehow exceeds input", () => {
+ expect(computeCachePct({ inputTokens: 100, outputTokens: 0, cacheReadTokens: 250 })).toBe(100);
+ });
+});
+
+describe("viewCacheRate", () => {
+ it("success level for a high hit rate (>= 66)", () => {
+ const v = viewCacheRate({ inputTokens: 100, outputTokens: 0, cacheReadTokens: 93 });
+ expect(v.pct).toBe(93);
+ expect(v.level).toBe("success");
+ expect(v.isHit).toBe(true);
+ });
+
+ it("warning level for a mid hit rate (33..65)", () => {
+ const v = viewCacheRate({ inputTokens: 100, outputTokens: 0, cacheReadTokens: 54 });
+ expect(v.pct).toBe(54);
+ expect(v.level).toBe("warning");
+ });
+
+ it("error level for a low hit rate (< 33), including a legitimate 0%", () => {
+ expect(viewCacheRate({ inputTokens: 100, outputTokens: 0, cacheReadTokens: 14 }).level).toBe(
+ "error",
+ );
+ const miss = viewCacheRate({ inputTokens: 1000, outputTokens: 50 });
+ expect(miss.pct).toBe(0);
+ expect(miss.level).toBe("error");
+ expect(miss.isHit).toBe(false);
+ });
+});
+
+describe("computeExpectedCachePct", () => {
+ it("null when there is no prior turn (first turn has no baseline)", () => {
+ expect(computeExpectedCachePct({ inputTokens: 100, outputTokens: 0 }, null)).toBeNull();
+ });
+
+ it("null when the prior turn cached nothing (denominator 0)", () => {
+ const prev = { inputTokens: 100, outputTokens: 0 };
+ const current = { inputTokens: 200, outputTokens: 0, cacheReadTokens: 50 };
+ expect(computeExpectedCachePct(current, prev)).toBeNull();
+ });
+
+ it("100% when the whole prior cached prefix was read back (backend worked example)", () => {
+ // turn 1: cacheRead 0, cacheWrite 5146 → prefix 5146; turn 2 reads 5146 back.
+ const prev = { inputTokens: 5149, outputTokens: 0, cacheReadTokens: 0, cacheWriteTokens: 5146 };
+ const current = {
+ inputTokens: 8462,
+ outputTokens: 0,
+ cacheReadTokens: 5146,
+ cacheWriteTokens: 3313,
+ };
+ expect(computeExpectedCachePct(current, prev)).toBe(100);
+ });
+
+ it("drops below 100% when the cache busted (read < prior prefix)", () => {
+ const prev = {
+ inputTokens: 1000,
+ outputTokens: 0,
+ cacheReadTokens: 100,
+ cacheWriteTokens: 900,
+ };
+ const current = { inputTokens: 1000, outputTokens: 0, cacheReadTokens: 500 };
+ // 500 / (100 + 900) = 50%
+ expect(computeExpectedCachePct(current, prev)).toBe(50);
+ });
+
+ it("clamps to 100 if read somehow exceeds the prior prefix", () => {
+ const prev = { inputTokens: 100, outputTokens: 0, cacheWriteTokens: 100 };
+ const current = { inputTokens: 100, outputTokens: 0, cacheReadTokens: 250 };
+ expect(computeExpectedCachePct(current, prev)).toBe(100);
+ });
+});
+
+describe("viewExpectedCache", () => {
+ it("null view when it cannot be derived (no prior turn)", () => {
+ expect(viewExpectedCache({ inputTokens: 100, outputTokens: 0 }, null)).toBeNull();
+ });
+
+ it("success level + hit flag for full retention", () => {
+ const prev = { inputTokens: 5149, outputTokens: 0, cacheWriteTokens: 5146 };
+ const current = { inputTokens: 8462, outputTokens: 0, cacheReadTokens: 5146 };
+ const v = viewExpectedCache(current, prev);
+ expect(v?.pct).toBe(100);
+ expect(v?.level).toBe("success");
+ expect(v?.isHit).toBe(true);
+ });
+});
+
+describe("formatContextSize", () => {
+ it("formats a defined count with thousands separators", () => {
+ expect(formatContextSize(34102)).toBe("34,102 tokens in context");
+ });
+
+ it("renders a placeholder for undefined (never 0)", () => {
+ expect(formatContextSize(undefined)).toBe("context size unknown");
+ });
+
+ it("renders an explicit 0 as zero tokens (a real reported value)", () => {
+ expect(formatContextSize(0)).toBe("0 tokens in context");
+ });
+});
+
+describe("formatCompactTokens", () => {
+ it("renders sub-1k counts as-is", () => {
+ expect(formatCompactTokens(0)).toBe("0");
+ expect(formatCompactTokens(812)).toBe("812");
+ });
+
+ it("renders thousands with one decimal (rounded ≥100k)", () => {
+ expect(formatCompactTokens(12300)).toBe("12.3k");
+ expect(formatCompactTokens(150000)).toBe("150k");
+ });
+
+ it("renders millions with one decimal", () => {
+ expect(formatCompactTokens(1_200_000)).toBe("1.2M");
+ expect(formatCompactTokens(1_000_000)).toBe("1.0M");
+ });
+});
+
+describe("computeContextUsage", () => {
+ it("computes an unrounded clamped percent against the limit", () => {
+ const u = computeContextUsage(34102, 1_000_000);
+ expect(u.current).toBe(34102);
+ expect(u.max).toBe(1_000_000);
+ expect(u.percent).toBeCloseTo(3.4102, 4);
+ });
+
+ it("treats unknown contextSize as current null (never 0)", () => {
+ const u = computeContextUsage(undefined, 1_000_000);
+ expect(u.current).toBeNull();
+ expect(u.percent).toBeNull();
+ });
+
+ it("an explicit 0 context size is a real reported value (current 0)", () => {
+ const u = computeContextUsage(0, 1_000_000);
+ expect(u.current).toBe(0);
+ expect(u.percent).toBe(0);
+ });
+
+ it("clamps percent to [0,100] and over-limit reads 100", () => {
+ expect(computeContextUsage(2_000_000, 1_000_000).percent).toBe(100);
+ });
+
+ it("max null (no/zero limit) ⇒ percent null", () => {
+ expect(computeContextUsage(5000, null).percent).toBeNull();
+ expect(computeContextUsage(5000, 0).percent).toBeNull();
+ expect(computeContextUsage(5000, null).max).toBeNull();
+ });
+});
diff --git a/src/core/metrics/format.ts b/src/core/metrics/format.ts
new file mode 100644
index 0000000..894bd54
--- /dev/null
+++ b/src/core/metrics/format.ts
@@ -0,0 +1,179 @@
+import type { StepMetrics, TurnMetrics, Usage } from "@dispatch/wire";
+import type { CacheRateView, StepMetricsView, TurnMetricsView } from "./types";
+
+function formatTokens(n: number): string {
+ return n.toLocaleString("en-US");
+}
+
+function formatDuration(ms: number | undefined): string | null {
+ if (ms === undefined || ms <= 0) return null;
+ if (ms < 1000) return `${Math.round(ms)}ms`;
+ return `${(ms / 1000).toFixed(1)}s`;
+}
+
+function formatTps(tps: number | null): string | null {
+ if (tps === null) return null;
+ if (tps < 10) return `${tps.toFixed(1)} tok/s`;
+ return `${Math.round(tps)} tok/s`;
+}
+
+/**
+ * Format the current context size for display. A defined count renders as
+ * `"<n> tokens in context"` (thousands-separated); `undefined` ("unknown" — no
+ * per-step usage reported yet) renders the placeholder `"context size unknown"`.
+ * Never renders `0` for the unknown case.
+ */
+export function formatContextSize(n: number | undefined): string {
+ if (n === undefined) return "context size unknown";
+ return `${formatTokens(n)} tokens in context`;
+}
+
+/**
+ * Compact token count for a slim status bar: `812`, `12.3k`, `1.2M`. Full
+ * thousands-separated numbers live elsewhere; this trades precision for width.
+ */
+export function formatCompactTokens(n: number): string {
+ if (n < 1000) return `${n}`;
+ if (n < 1_000_000) {
+ const k = n / 1000;
+ return `${k >= 100 ? Math.round(k) : k.toFixed(1)}k`;
+ }
+ const m = n / 1_000_000;
+ return `${m >= 100 ? Math.round(m) : m.toFixed(1)}M`;
+}
+
+/**
+ * Context-window occupancy: the current size against a max window limit.
+ *
+ * `current` is the latest turn's context size, or `null` when unknown (no
+ * per-step usage reported yet) — NEVER coerced to `0`, so a consumer cannot
+ * silently render "0 tokens / 1M"; it must branch on `current === null` and show
+ * a placeholder instead. `max` is the model's window limit (or `null` when
+ * unknown). `percent` is `current / max * 100` clamped to [0, 100], UNROUNDED
+ * (the UI picks the precision) — so a few-thousand-token context against a
+ * 1,000,000 window still reads non-zero. `percent` is `null` when `current` OR
+ * `max` is unknown (no bar/denominator).
+ */
+export interface ContextUsage {
+ readonly current: number | null;
+ readonly max: number | null;
+ readonly percent: number | null;
+}
+
+export function computeContextUsage(
+ contextSize: number | undefined,
+ contextLimit: number | null | undefined,
+): ContextUsage {
+ const current = contextSize ?? null;
+ const max = typeof contextLimit === "number" && contextLimit > 0 ? contextLimit : null;
+ const percent =
+ current === null || max === null ? null : Math.max(0, Math.min(100, (current / max) * 100));
+ return { current, max, percent };
+}
+
+/** Compute tokens-per-second. Returns null when elapsed time is absent or zero. */
+export function computeTps(outputTokens: number, elapsedMs: number | undefined): number | null {
+ if (elapsedMs === undefined || elapsedMs <= 0) return null;
+ return outputTokens / (elapsedMs / 1000);
+}
+
+function totalTokens(u: Usage): number {
+ return u.inputTokens + u.outputTokens;
+}
+
+function formatBreakdown(u: Usage): string {
+ let s = `${formatTokens(u.inputTokens)} in / ${formatTokens(u.outputTokens)} out`;
+ if (u.cacheReadTokens !== undefined && u.cacheReadTokens > 0) {
+ s += ` / ${formatTokens(u.cacheReadTokens)} cache`;
+ }
+ return s;
+}
+
+/** Build a formatted view of a single step's metrics. */
+export function viewStepMetrics(step: StepMetrics, index: number): StepMetricsView {
+ const total = totalTokens(step.usage);
+ const tps = computeTps(step.usage.outputTokens, step.decodeMs ?? step.genTotalMs);
+ return {
+ label: `step ${index + 1}`,
+ tokensLabel: `${formatTokens(total)} tok`,
+ tps: formatTps(tps),
+ ttft: formatDuration(step.ttftMs),
+ decode: formatDuration(step.decodeMs),
+ genTotal: formatDuration(step.genTotalMs),
+ };
+}
+
+/**
+ * Cache hit rate as a 0..100 integer percentage: `cacheReadTokens / inputTokens`,
+ * clamped to [0,1]. Absent cache field counts as 0; a 0% rate is legitimate (not
+ * missing data). Returns 0 when there are no input tokens.
+ */
+export function computeCachePct(u: Usage): number {
+ const read = u.cacheReadTokens ?? 0;
+ if (u.inputTokens <= 0) return 0;
+ const rate = read / u.inputTokens;
+ const clamped = rate < 0 ? 0 : rate > 1 ? 1 : rate;
+ return Math.round(clamped * 100);
+}
+
+/** Colour severity for a cache hit percentage (badge colour). */
+function cacheLevel(pct: number): "success" | "warning" | "error" {
+ if (pct >= 66) return "success";
+ if (pct >= 33) return "warning";
+ return "error";
+}
+
+/** Build a view of a cache hit rate (percentage + colour level + hit flag). */
+export function viewCacheRate(u: Usage): CacheRateView {
+ const pct = computeCachePct(u);
+ return { pct, level: cacheLevel(pct), isHit: (u.cacheReadTokens ?? 0) > 0 };
+}
+
+/**
+ * Expected cache (retention): of the cache that existed going INTO this turn, how
+ * much was read back — `clamp01(cacheRead_N / (cacheRead_{N-1} + cacheWrite_{N-1}))`.
+ * The denominator is the PRIOR turn's cached prefix (what it read + what it wrote).
+ * Ideally ~100% on every turn after the first; <100% = the cache busted/expired.
+ *
+ * Returns `null` when it cannot be derived: no prior turn (`prev === null`) or the
+ * prior turn cached nothing (denominator <= 0) — distinct from a real 0%.
+ */
+export function computeExpectedCachePct(current: Usage, prev: Usage | null): number | null {
+ if (prev === null) return null;
+ const denom = (prev.cacheReadTokens ?? 0) + (prev.cacheWriteTokens ?? 0);
+ if (denom <= 0) return null;
+ const read = current.cacheReadTokens ?? 0;
+ const rate = read / denom;
+ const clamped = rate < 0 ? 0 : rate > 1 ? 1 : rate;
+ return Math.round(clamped * 100);
+}
+
+/**
+ * Build a view of the cross-turn retention (percentage + colour level + hit flag),
+ * or `null` when it can't be derived (see `computeExpectedCachePct`).
+ */
+export function viewExpectedCache(current: Usage, prev: Usage | null): CacheRateView | null {
+ const pct = computeExpectedCachePct(current, prev);
+ if (pct === null) return null;
+ return { pct, level: cacheLevel(pct), isHit: (current.cacheReadTokens ?? 0) > 0 };
+}
+
+/** Build a formatted view of a turn's aggregate metrics. */
+export function viewTurnMetrics(turn: TurnMetrics, turnNumber?: number): TurnMetricsView {
+ const total = totalTokens(turn.usage);
+ let totalGenMs: number | undefined;
+ for (const step of turn.steps) {
+ const stepMs = step.decodeMs ?? step.genTotalMs;
+ if (stepMs !== undefined) {
+ totalGenMs = (totalGenMs ?? 0) + stepMs;
+ }
+ }
+ const tps = computeTps(turn.usage.outputTokens, totalGenMs);
+ return {
+ label: turnNumber !== undefined ? `turn ${turnNumber}` : "turn",
+ tokensLabel: `${formatTokens(total)} tok`,
+ breakdown: formatBreakdown(turn.usage),
+ tps: formatTps(tps),
+ duration: formatDuration(turn.durationMs),
+ };
+}
diff --git a/src/core/metrics/index.ts b/src/core/metrics/index.ts
new file mode 100644
index 0000000..d3c9669
--- /dev/null
+++ b/src/core/metrics/index.ts
@@ -0,0 +1,31 @@
+export {
+ type ContextUsage,
+ computeCachePct,
+ computeContextUsage,
+ computeExpectedCachePct,
+ computeTps,
+ formatCompactTokens,
+ formatContextSize,
+ viewCacheRate,
+ viewExpectedCache,
+ viewStepMetrics,
+ viewTurnMetrics,
+} from "./format";
+export { interleaveTurnMetrics } from "./place";
+export {
+ applyDurableMetrics,
+ foldMetricsEvent,
+ initialMetricsState,
+ selectCurrentContextSize,
+ selectOrderedTurnMetrics,
+} from "./reducer";
+export type {
+ CacheRateView,
+ MetricsRow,
+ MetricsState,
+ StepMetrics,
+ StepMetricsView,
+ TurnMetrics,
+ TurnMetricsEntry,
+ TurnMetricsView,
+} from "./types";
diff --git a/src/core/metrics/place.test.ts b/src/core/metrics/place.test.ts
new file mode 100644
index 0000000..9c925a3
--- /dev/null
+++ b/src/core/metrics/place.test.ts
@@ -0,0 +1,621 @@
+import type { StepId, StepMetrics, TurnMetrics } from "@dispatch/wire";
+import { describe, expect, it } from "vitest";
+import type { RenderGroup } from "../chunks";
+import { interleaveTurnMetrics } from "./place";
+import type { MetricsRow, TurnMetricsEntry } from "./types";
+
+function userGroup(seq: number, text: string): RenderGroup {
+ return {
+ kind: "single",
+ chunk: {
+ seq,
+ role: "user",
+ chunk: { type: "text", text },
+ provisional: false,
+ },
+ };
+}
+
+function assistantGroup(seq: number, text: string): RenderGroup {
+ return {
+ kind: "single",
+ chunk: {
+ seq,
+ role: "assistant",
+ chunk: { type: "text", text },
+ provisional: false,
+ },
+ };
+}
+
+function toolCallGroup(seq: number, stepId: string, toolCallId: string): RenderGroup {
+ return {
+ kind: "single",
+ chunk: {
+ seq,
+ role: "assistant",
+ chunk: {
+ type: "tool-call",
+ toolCallId,
+ toolName: "test",
+ input: {},
+ stepId: stepId as StepId,
+ },
+ provisional: false,
+ },
+ };
+}
+
+function toolResultGroup(seq: number, stepId: string, toolCallId: string): RenderGroup {
+ return {
+ kind: "single",
+ chunk: {
+ seq,
+ role: "tool",
+ chunk: {
+ type: "tool-result",
+ toolCallId,
+ toolName: "test",
+ content: "",
+ isError: false,
+ stepId: stepId as StepId,
+ },
+ provisional: false,
+ },
+ };
+}
+
+function toolBatchGroup(stepId: string, toolCallIds: string[]): RenderGroup {
+ return {
+ kind: "tool-batch",
+ stepId,
+ entries: toolCallIds.map((id) => ({
+ call: {
+ type: "tool-call" as const,
+ toolCallId: id,
+ toolName: "test",
+ input: {},
+ stepId: stepId as StepId,
+ },
+ result: null,
+ })),
+ provisional: false,
+ };
+}
+
+function makeStep(stepId: string, inputTokens: number, outputTokens: number): StepMetrics {
+ return {
+ stepId: stepId as StepId,
+ usage: { inputTokens, outputTokens },
+ };
+}
+
+function makeTurn(
+ turnId: string,
+ inputTokens: number,
+ outputTokens: number,
+ steps: StepMetrics[] = [],
+): TurnMetrics {
+ return {
+ turnId,
+ usage: { inputTokens, outputTokens },
+ steps,
+ };
+}
+
+function makeEntry(
+ turnId: string,
+ inputTokens: number,
+ outputTokens: number,
+ steps: StepMetrics[] = [],
+): TurnMetricsEntry {
+ return {
+ turnId,
+ steps,
+ total: makeTurn(turnId, inputTokens, outputTokens, steps),
+ };
+}
+
+function makeProgressiveEntry(turnId: string, steps: StepMetrics[]): TurnMetricsEntry {
+ return {
+ turnId,
+ steps,
+ total: null,
+ };
+}
+
+function expectGroupAt(
+ rows: readonly { readonly kind: string }[],
+ index: number,
+ expected: RenderGroup,
+): void {
+ const row = rows[index];
+ expect(row?.kind).toBe("group");
+ expect((row as { readonly group: RenderGroup } | undefined)?.group).toBe(expected);
+}
+
+function expectStepMetricsAt(
+ rows: readonly { readonly kind: string }[],
+ index: number,
+ expectedStepId: string,
+ expectedIndex: number,
+): void {
+ const row = rows[index];
+ expect(row?.kind).toBe("step-metrics");
+ const sm = row as { readonly step: StepMetrics; readonly index: number } | undefined;
+ expect(sm?.step.stepId).toBe(expectedStepId);
+ expect(sm?.index).toBe(expectedIndex);
+}
+
+function expectTurnMetricsAt(
+ rows: readonly { readonly kind: string }[],
+ index: number,
+ expectedTurnId: string,
+): void {
+ const row = rows[index];
+ expect(row?.kind).toBe("turn-metrics");
+ expect((row as { readonly turn: TurnMetrics } | undefined)?.turn.turnId).toBe(expectedTurnId);
+}
+
+describe("interleaveTurnMetrics", () => {
+ it("no metrics: rows are all groups, unchanged order", () => {
+ const g1 = userGroup(1, "q");
+ const g2 = assistantGroup(2, "a");
+ const rows = interleaveTurnMetrics([g1, g2], []);
+ expect(rows).toHaveLength(2);
+ expectGroupAt(rows, 0, g1);
+ expectGroupAt(rows, 1, g2);
+ });
+
+ it("head-aligned: segment i gets entries[i]", () => {
+ const g1 = userGroup(1, "q1");
+ const g2 = toolCallGroup(2, "s1", "c1");
+ const g3 = userGroup(3, "q2");
+ const g4 = toolCallGroup(4, "s2", "c2");
+ const step1 = makeStep("s1", 100, 50);
+ const step2 = makeStep("s2", 200, 80);
+ const rows = interleaveTurnMetrics(
+ [g1, g2, g3, g4],
+ [makeEntry("t1", 100, 50, [step1]), makeEntry("t2", 200, 80, [step2])],
+ );
+
+ expect(rows).toHaveLength(8);
+ expectGroupAt(rows, 0, g1);
+ expectGroupAt(rows, 1, g2);
+ expectStepMetricsAt(rows, 2, "s1", 0);
+ expectTurnMetricsAt(rows, 3, "t1");
+ expectGroupAt(rows, 4, g3);
+ expectGroupAt(rows, 5, g4);
+ expectStepMetricsAt(rows, 6, "s2", 0);
+ expectTurnMetricsAt(rows, 7, "t2");
+ });
+
+ it("a trailing segment with no entry (in-flight turn) renders no metrics", () => {
+ const g1 = userGroup(1, "q1");
+ const g2 = toolCallGroup(2, "s1", "c1");
+ const g3 = userGroup(3, "q2");
+ const g4 = assistantGroup(4, "a2");
+ const step = makeStep("s1", 100, 50);
+ const rows = interleaveTurnMetrics([g1, g2, g3, g4], [makeEntry("t1", 100, 50, [step])]);
+
+ expect(rows).toHaveLength(6);
+ expectGroupAt(rows, 0, g1);
+ expectGroupAt(rows, 1, g2);
+ expectStepMetricsAt(rows, 2, "s1", 0);
+ expectTurnMetricsAt(rows, 3, "t1");
+ expectGroupAt(rows, 4, g3);
+ expectGroupAt(rows, 5, g4);
+ });
+
+ it("single text-only turn: no step row (unanchored), turn-metrics at tail", () => {
+ const g1 = userGroup(1, "q1");
+ const g2 = assistantGroup(2, "a1");
+ const step = makeStep("s1", 100, 50);
+ const turn = makeEntry("t1", 100, 50, [step]);
+ const rows = interleaveTurnMetrics([g1, g2], [turn]);
+
+ expect(rows).toHaveLength(3);
+ expectGroupAt(rows, 0, g1);
+ expectGroupAt(rows, 1, g2);
+ expectTurnMetricsAt(rows, 2, "t1");
+ });
+
+ it("tool step anchors inline after its tool-batch group", () => {
+ const g1 = userGroup(1, "q1");
+ const g2 = toolBatchGroup("t#0", ["c1", "c2"]);
+ const g3 = assistantGroup(3, "a1");
+ const step0 = makeStep("t#0", 100, 50);
+ const step1 = makeStep("t#1", 200, 80);
+ const turn = makeEntry("t1", 300, 130, [step0, step1]);
+ const rows = interleaveTurnMetrics([g1, g2, g3], [turn]);
+
+ expect(rows).toHaveLength(5);
+ expectGroupAt(rows, 0, g1);
+ expectGroupAt(rows, 1, g2);
+ expectStepMetricsAt(rows, 2, "t#0", 0);
+ expectGroupAt(rows, 3, g3);
+ expectTurnMetricsAt(rows, 4, "t1");
+ });
+
+ it("single tool-call group anchors its step", () => {
+ const g1 = userGroup(1, "q1");
+ const g2 = toolCallGroup(2, "s1", "c1");
+ const g3 = assistantGroup(3, "a1");
+ const step = makeStep("s1", 100, 50);
+ const turn = makeEntry("t1", 100, 50, [step]);
+ const rows = interleaveTurnMetrics([g1, g2, g3], [turn]);
+
+ expect(rows).toHaveLength(5);
+ expectGroupAt(rows, 0, g1);
+ expectGroupAt(rows, 1, g2);
+ expectStepMetricsAt(rows, 2, "s1", 0);
+ expectGroupAt(rows, 3, g3);
+ expectTurnMetricsAt(rows, 4, "t1");
+ });
+
+ it("single tool-result group anchors its step", () => {
+ const g1 = userGroup(1, "q1");
+ const g2 = toolResultGroup(2, "s1", "c1");
+ const g3 = assistantGroup(3, "a1");
+ const step = makeStep("s1", 100, 50);
+ const turn = makeEntry("t1", 100, 50, [step]);
+ const rows = interleaveTurnMetrics([g1, g2, g3], [turn]);
+
+ expect(rows).toHaveLength(5);
+ expectGroupAt(rows, 0, g1);
+ expectGroupAt(rows, 1, g2);
+ expectStepMetricsAt(rows, 2, "s1", 0);
+ expectGroupAt(rows, 3, g3);
+ expectTurnMetricsAt(rows, 4, "t1");
+ });
+
+ it("multi-step: each tool step inline, unanchored text step skipped", () => {
+ const g1 = userGroup(1, "q1");
+ const g2 = toolBatchGroup("t#0", ["c1"]);
+ const g3 = assistantGroup(2, "thinking");
+ const g4 = toolBatchGroup("t#1", ["c2", "c3"]);
+ const g5 = assistantGroup(3, "a1");
+ const step0 = makeStep("t#0", 100, 50);
+ const step1 = makeStep("t#1", 200, 80);
+ const step2 = makeStep("t#2", 50, 20);
+ const turn = makeEntry("t1", 350, 150, [step0, step1, step2]);
+ const rows = interleaveTurnMetrics([g1, g2, g3, g4, g5], [turn]);
+
+ expect(rows).toHaveLength(8);
+ expectGroupAt(rows, 0, g1);
+ expectGroupAt(rows, 1, g2);
+ expectStepMetricsAt(rows, 2, "t#0", 0);
+ expectGroupAt(rows, 3, g3);
+ expectGroupAt(rows, 4, g4);
+ expectStepMetricsAt(rows, 5, "t#1", 1);
+ expectGroupAt(rows, 6, g5);
+ expectTurnMetricsAt(rows, 7, "t1");
+ });
+
+ it("multiple turns head-aligned with inline steps", () => {
+ const g1 = userGroup(1, "q1");
+ const g2 = toolBatchGroup("s1", ["c1"]);
+ const g3 = assistantGroup(2, "a1");
+ const g4 = userGroup(3, "q2");
+ const g5 = toolCallGroup(4, "s2", "c2");
+ const step1 = makeStep("s1", 100, 50);
+ const step2 = makeStep("s2", 200, 80);
+ const rows = interleaveTurnMetrics(
+ [g1, g2, g3, g4, g5],
+ [makeEntry("t1", 100, 50, [step1]), makeEntry("t2", 200, 80, [step2])],
+ );
+
+ expect(rows).toHaveLength(9);
+ expectGroupAt(rows, 0, g1);
+ expectGroupAt(rows, 1, g2);
+ expectStepMetricsAt(rows, 2, "s1", 0);
+ expectGroupAt(rows, 3, g3);
+ expectTurnMetricsAt(rows, 4, "t1");
+ expectGroupAt(rows, 5, g4);
+ expectGroupAt(rows, 6, g5);
+ expectStepMetricsAt(rows, 7, "s2", 0);
+ expectTurnMetricsAt(rows, 8, "t2");
+ });
+
+ it("unanchored step (stepId not in groups) is skipped — only turn-metrics", () => {
+ const g1 = userGroup(1, "q1");
+ const g2 = assistantGroup(2, "a1");
+ const step0 = makeStep("orphan", 100, 50);
+ const turn = makeEntry("t1", 100, 50, [step0]);
+ const rows = interleaveTurnMetrics([g1, g2], [turn]);
+
+ expect(rows).toHaveLength(3);
+ expectGroupAt(rows, 0, g1);
+ expectGroupAt(rows, 1, g2);
+ expectTurnMetricsAt(rows, 2, "t1");
+ });
+
+ it("fewer metrics than segments: trailing segments are bare", () => {
+ const g1 = userGroup(1, "q1");
+ const g2 = toolCallGroup(2, "s1", "c1");
+ const g3 = userGroup(3, "q2");
+ const g4 = assistantGroup(4, "a2");
+ const g5 = userGroup(5, "q3");
+ const g6 = assistantGroup(6, "a3");
+ const step = makeStep("s1", 300, 120);
+ const rows = interleaveTurnMetrics(
+ [g1, g2, g3, g4, g5, g6],
+ [makeEntry("t1", 300, 120, [step])],
+ );
+
+ expect(rows).toHaveLength(8);
+ expectGroupAt(rows, 0, g1);
+ expectGroupAt(rows, 1, g2);
+ expectStepMetricsAt(rows, 2, "s1", 0);
+ expectTurnMetricsAt(rows, 3, "t1");
+ expectGroupAt(rows, 4, g3);
+ expectGroupAt(rows, 5, g4);
+ expectGroupAt(rows, 6, g5);
+ expectGroupAt(rows, 7, g6);
+ });
+
+ it("trimmed leading turns: a mixed tool+text transcript tail-aligns text-only turns to their OWN (newest) entries, not stale trimmed ones", () => {
+ // A long conversation where the chat limit unloaded the oldest turn (t1).
+ // Metrics still hold all three turns; the loaded transcript is turns 2-3.
+ // Turn 2 is a tool turn (matched by stepId); turn 3 is text-only (no
+ // stepId groups) — the failure case. The text-only turn MUST get its OWN
+ // entry (t3), NOT the trimmed t1's stale metrics.
+ const g3 = userGroup(3, "q2");
+ const g4 = toolBatchGroup("s2", ["c2"]);
+ const g5 = assistantGroup(4, "tool-reply");
+ const g6 = userGroup(5, "q3");
+ const g7 = assistantGroup(6, "text-reply");
+ const step1 = makeStep("s1", 11, 1); // t1 (trimmed)
+ const step2 = makeStep("s2", 22, 2); // t2 (loaded, tool)
+ const step3 = makeStep("s3", 33, 3); // t3 (loaded, text-only — unanchored)
+ const entries = [
+ makeEntry("t1", 11, 1, [step1]),
+ makeEntry("t2", 22, 2, [step2]),
+ makeEntry("t3", 33, 3, [step3]),
+ ];
+ const rows = interleaveTurnMetrics([g3, g4, g5, g6, g7], entries);
+
+ const tmRows = rows.filter(
+ (r): r is Extract<MetricsRow, { kind: "turn-metrics" }> => r.kind === "turn-metrics",
+ );
+ // Two loaded turns → two turn-metrics rows. The trimmed t1 does NOT render.
+ expect(tmRows).toHaveLength(2);
+ // CRITICAL: the text-only turn (segment 1) got t3 (its own newest entry),
+ // not t1 (the stale trimmed one). A misaligned head-align would show t1.
+ expect(tmRows[1]?.turn.turnId).toBe("t3");
+ expect(tmRows[0]?.turn.turnId).toBe("t2");
+ // And t1 never appears as a rendered row.
+ expect(tmRows.some((r) => r.turn.turnId === "t1")).toBe(false);
+ });
+
+ it("trimmed turn still counts toward the cumulative 'chat total' on the first visible turn", () => {
+ // t1 is trimmed (no segment) but finalized; t2 is the loaded visible turn.
+ // t2's "Chat Total" cumulative must INCLUDE t1's usage (the whole chat),
+ // even though t1 renders no row of its own.
+ const g1 = userGroup(2, "q2");
+ const g2 = assistantGroup(3, "a2");
+ const entries = [
+ {
+ turnId: "t1",
+ steps: [],
+ total: {
+ turnId: "t1",
+ usage: { inputTokens: 1000, outputTokens: 10, cacheReadTokens: 500 },
+ steps: [],
+ },
+ },
+ {
+ turnId: "t2",
+ steps: [],
+ total: {
+ turnId: "t2",
+ usage: { inputTokens: 2000, outputTokens: 20, cacheReadTokens: 1600 },
+ steps: [],
+ },
+ },
+ ];
+ const rows = interleaveTurnMetrics([g1, g2], entries);
+ const tmRows = rows.filter(
+ (r): r is Extract<MetricsRow, { kind: "turn-metrics" }> => r.kind === "turn-metrics",
+ );
+ // Only the loaded turn renders a row; the trimmed t1 does not.
+ expect(tmRows).toHaveLength(1);
+ expect(tmRows[0]?.turn.turnId).toBe("t2");
+ // Cumulative includes BOTH turns (t1 + t2): input 3000, cacheRead 2100.
+ expect(tmRows[0]?.cumulativeUsage.inputTokens).toBe(3000);
+ expect(tmRows[0]?.cumulativeUsage.cacheReadTokens).toBe(2100);
+ // Retention baseline is the prior finalized turn (t1, even though trimmed).
+ expect(tmRows[0]?.prevTurnUsage?.inputTokens).toBe(1000);
+ expect(tmRows[0]?.prevTurnUsage?.cacheReadTokens).toBe(500);
+ });
+
+ it("in-flight turn (no durationMs) still produces turn row", () => {
+ const g1 = userGroup(1, "q1");
+ const g2 = toolCallGroup(2, "s1", "c1");
+ const step = makeStep("s1", 100, 50);
+ const turn: TurnMetricsEntry = {
+ turnId: "t1",
+ steps: [step],
+ total: {
+ turnId: "t1",
+ usage: { inputTokens: 100, outputTokens: 50 },
+ steps: [step],
+ },
+ };
+ const rows = interleaveTurnMetrics([g1, g2], [turn]);
+
+ expect(rows).toHaveLength(4);
+ expectStepMetricsAt(rows, 2, "s1", 0);
+ expectTurnMetricsAt(rows, 3, "t1");
+ const metricsRow = rows[3] as { readonly turn: TurnMetrics } | undefined;
+ expect(metricsRow?.turn.durationMs).toBeUndefined();
+ });
+
+ it("leading non-turn groups emit as plain group rows", () => {
+ const g0 = assistantGroup(1, "system msg");
+ const g1 = userGroup(2, "q1");
+ const g2 = toolCallGroup(3, "s1", "c1");
+ const step = makeStep("s1", 100, 50);
+ const rows = interleaveTurnMetrics([g0, g1, g2], [makeEntry("t1", 100, 50, [step])]);
+
+ expect(rows).toHaveLength(5);
+ expectGroupAt(rows, 0, g0);
+ expect(rows[1]?.kind).toBe("group");
+ expect(rows[2]?.kind).toBe("group");
+ expectStepMetricsAt(rows, 3, "s1", 0);
+ expectTurnMetricsAt(rows, 4, "t1");
+ });
+
+ it("trimmed turn (more metrics than segments) does NOT emit a standalone row at the top", () => {
+ const g1 = userGroup(1, "q1");
+ const g2 = toolCallGroup(2, "s1", "c1");
+ const step1 = makeStep("s1", 100, 50);
+ const step2 = makeStep("s2", 200, 80);
+ const rows = interleaveTurnMetrics(
+ [g1, g2],
+ [makeEntry("t1", 100, 50, [step1]), makeEntry("t2", 200, 80, [step2])],
+ );
+
+ // t2's content was unloaded by the chat limit (no segment for it); its
+ // metrics must NOT render a standalone row piled at the top. Only the
+ // loaded turn's content + its matched metrics appear. (t2 still counts
+ // toward the cumulative "chat total" — see the cache-total tests.)
+ expect(rows).toHaveLength(4);
+ expectGroupAt(rows, 0, g1);
+ expectGroupAt(rows, 1, g2);
+ expectStepMetricsAt(rows, 2, "s1", 0);
+ expectTurnMetricsAt(rows, 3, "t1");
+ // No standalone turn-metrics row for t2 anywhere.
+ const tmRows = rows.filter((r) => r.kind === "turn-metrics");
+ expect(tmRows).toHaveLength(1);
+ expect((tmRows[0] as { readonly turn: TurnMetrics }).turn.turnId).toBe("t1");
+ });
+
+ it("turn with no steps emits only turn-metrics (no step-metrics)", () => {
+ const g1 = userGroup(1, "q1");
+ const g2 = assistantGroup(2, "a1");
+ const rows = interleaveTurnMetrics([g1, g2], [makeEntry("t1", 100, 50)]);
+
+ expect(rows).toHaveLength(3);
+ expectGroupAt(rows, 0, g1);
+ expectGroupAt(rows, 1, g2);
+ expectTurnMetricsAt(rows, 2, "t1");
+ });
+
+ it("progressive: entry with steps but total=null emits step rows and NO turn-metrics row", () => {
+ const g1 = userGroup(1, "q1");
+ const g2 = toolBatchGroup("s1", ["c1"]);
+ const g3 = assistantGroup(2, "a1");
+ const step1 = makeStep("s1", 100, 50);
+ const entry = makeProgressiveEntry("t1", [step1]);
+ const rows = interleaveTurnMetrics([g1, g2, g3], [entry]);
+
+ expect(rows).toHaveLength(4);
+ expectGroupAt(rows, 0, g1);
+ expectGroupAt(rows, 1, g2);
+ expectStepMetricsAt(rows, 2, "s1", 0);
+ expectGroupAt(rows, 3, g3);
+ });
+
+ it("entry with total emits step rows + a turn-metrics row", () => {
+ const g1 = userGroup(1, "q1");
+ const g2 = toolBatchGroup("s1", ["c1"]);
+ const g3 = assistantGroup(2, "a1");
+ const step1 = makeStep("s1", 100, 50);
+ const entry = makeEntry("t1", 100, 50, [step1]);
+ const rows = interleaveTurnMetrics([g1, g2, g3], [entry]);
+
+ expect(rows).toHaveLength(5);
+ expectGroupAt(rows, 0, g1);
+ expectGroupAt(rows, 1, g2);
+ expectStepMetricsAt(rows, 2, "s1", 0);
+ expectGroupAt(rows, 3, g3);
+ expectTurnMetricsAt(rows, 4, "t1");
+ });
+
+ it("progressive multi-step: unanchored steps skipped, no turn-metrics", () => {
+ const g1 = userGroup(1, "q1");
+ const g2 = assistantGroup(2, "a1");
+ const step0 = makeStep("s1", 100, 50);
+ const step1 = makeStep("s2", 200, 80);
+ const entry = makeProgressiveEntry("t1", [step0, step1]);
+ const rows = interleaveTurnMetrics([g1, g2], [entry]);
+
+ expect(rows).toHaveLength(2);
+ expectGroupAt(rows, 0, g1);
+ expectGroupAt(rows, 1, g2);
+ });
+});
+
+describe("interleaveTurnMetrics — cumulative usage (cache total)", () => {
+ function turnMetricsRows(rows: readonly MetricsRow[]) {
+ return rows.filter((r): r is Extract<MetricsRow, { kind: "turn-metrics" }> => {
+ return r.kind === "turn-metrics";
+ });
+ }
+
+ function cacheEntry(
+ turnId: string,
+ inputTokens: number,
+ outputTokens: number,
+ cacheReadTokens: number,
+ ): TurnMetricsEntry {
+ const total: TurnMetrics = {
+ turnId,
+ usage: { inputTokens, outputTokens, cacheReadTokens },
+ steps: [],
+ };
+ return { turnId, steps: [], total };
+ }
+
+ it("turn-metrics row carries this turn's usage and the running cumulative", () => {
+ const rows = interleaveTurnMetrics(
+ [userGroup(1, "q1"), assistantGroup(2, "a1")],
+ [makeEntry("t1", 1000, 100)],
+ );
+ const tm = turnMetricsRows(rows);
+ expect(tm).toHaveLength(1);
+ expect(tm[0]?.turn.turnId).toBe("t1");
+ expect(tm[0]?.cumulativeUsage).toEqual({ inputTokens: 1000, outputTokens: 100 });
+ });
+
+ it("accumulates cache read + input across turns (chat total)", () => {
+ const rows = interleaveTurnMetrics(
+ [userGroup(1, "q1"), assistantGroup(2, "a1"), userGroup(3, "q2"), assistantGroup(4, "a2")],
+ [cacheEntry("t1", 2669, 10, 384), cacheEntry("t2", 2737, 10, 2560)],
+ );
+ const tm = turnMetricsRows(rows);
+ expect(tm).toHaveLength(2);
+ // turn 1: only its own usage
+ expect(tm[0]?.cumulativeUsage.inputTokens).toBe(2669);
+ expect(tm[0]?.cumulativeUsage.cacheReadTokens).toBe(384);
+ // turn 2: sum of both (input 5406, cacheRead 2944 → matches the backend's 54% example)
+ expect(tm[1]?.cumulativeUsage.inputTokens).toBe(5406);
+ expect(tm[1]?.cumulativeUsage.cacheReadTokens).toBe(2944);
+ });
+
+ it("an in-flight (total=null) turn does not contribute to the cumulative", () => {
+ const rows = interleaveTurnMetrics(
+ [userGroup(1, "q1"), assistantGroup(2, "a1"), userGroup(3, "q2"), assistantGroup(4, "a2")],
+ [cacheEntry("t1", 1000, 10, 500), makeProgressiveEntry("t2", [makeStep("s1", 200, 5)])],
+ );
+ const tm = turnMetricsRows(rows);
+ // only the finalized turn emits a turn-metrics row; its cumulative is just itself
+ expect(tm).toHaveLength(1);
+ expect(tm[0]?.cumulativeUsage.inputTokens).toBe(1000);
+ expect(tm[0]?.cumulativeUsage.cacheReadTokens).toBe(500);
+ });
+
+ it("carries the prior finalized turn's usage as the retention baseline", () => {
+ const rows = interleaveTurnMetrics(
+ [userGroup(1, "q1"), assistantGroup(2, "a1"), userGroup(3, "q2"), assistantGroup(4, "a2")],
+ [cacheEntry("t1", 2669, 10, 384), cacheEntry("t2", 2737, 10, 2560)],
+ );
+ const tm = turnMetricsRows(rows);
+ // first finalized turn has no earlier baseline
+ expect(tm[0]?.prevTurnUsage).toBeNull();
+ // second turn's baseline is the first turn's usage
+ expect(tm[1]?.prevTurnUsage?.inputTokens).toBe(2669);
+ expect(tm[1]?.prevTurnUsage?.cacheReadTokens).toBe(384);
+ });
+});
diff --git a/src/core/metrics/place.ts b/src/core/metrics/place.ts
new file mode 100644
index 0000000..7122b09
--- /dev/null
+++ b/src/core/metrics/place.ts
@@ -0,0 +1,298 @@
+import type { Usage } from "@dispatch/wire";
+import type { RenderGroup } from "../chunks";
+import type { MetricsRow, TurnMetricsEntry } from "./types";
+
+function groupStepId(g: RenderGroup): string | undefined {
+ if (g.kind === "tool-batch") return g.stepId;
+ const c = g.chunk.chunk;
+ return c.type === "tool-call" || c.type === "tool-result" ? c.stepId : undefined;
+}
+
+/** Element-wise sum of two token usages (cache fields included only when nonzero). */
+function addUsage(a: Usage, b: Usage): Usage {
+ const out: Usage = {
+ inputTokens: a.inputTokens + b.inputTokens,
+ outputTokens: a.outputTokens + b.outputTokens,
+ };
+ const read = (a.cacheReadTokens ?? 0) + (b.cacheReadTokens ?? 0);
+ const write = (a.cacheWriteTokens ?? 0) + (b.cacheWriteTokens ?? 0);
+ if (read > 0) (out as { cacheReadTokens?: number }).cacheReadTokens = read;
+ if (write > 0) (out as { cacheWriteTokens?: number }).cacheWriteTokens = write;
+ return out;
+}
+
+/**
+ * Interleave turn metrics into the rendered transcript.
+ *
+ * Splits groups into per-turn segments: a new segment begins at each `single`
+ * group with `group.chunk.role === "user"`. Segments are matched to entries
+ * by `stepId` presence when possible (robust against chat-limit trimming: when
+ * a turn's user message is trimmed, positional alignment would be off, but
+ * stepId matching still finds the right entry). Segments with no stepId-bearing
+ * groups (text-only turns) fall back to POSITIONAL tail-alignment: since the
+ * loaded transcript is always a SUFFIX of the full turn history (the chat limit
+ * keeps the newest and unloads the oldest), segment `seg` ↔ entry `K - T + seg`.
+ *
+ * Within a segment that has a matched entry, each completed step's metrics
+ * are placed INLINE right after the last group bearing that step's `stepId`.
+ * Steps whose `stepId` does not appear in any group ("unanchored"):
+ * - If the segment HAS stepId-bearing groups (tool chunks exist but this step's
+ * were trimmed): SKIPPED (no blank "step N · 0 tok" bubbles).
+ * - If the segment has NO stepId-bearing groups (text-only turn): placed at the
+ * segment tail before the turn-metrics row (the original behavior).
+ *
+ * A `turn-metrics` row is emitted ONLY when `entry.total !== null` (i.e. the turn
+ * is finalized via `done` or durable data). A still-generating turn emits no
+ * turn-total row.
+ *
+ * Fully trimmed turns (entries whose content was unloaded by the chat limit and
+ * which match no segment) are NOT rendered as standalone rows — that previously
+ * piled a wall of stale cache badges at the top of a long, trimmed transcript.
+ * Their usage still counts toward the per-turn "chat total" cumulative (computed
+ * across ALL finalized turns in entry-array order), so the running cache rate
+ * stays correct regardless of which turns were trimmed; paging earlier history
+ * back in ("Show earlier messages") re-matches them and re-renders their rows.
+ */
+export function interleaveTurnMetrics(
+ groups: readonly RenderGroup[],
+ entries: readonly TurnMetricsEntry[],
+): readonly MetricsRow[] {
+ if (entries.length === 0) {
+ return groups.map((g) => ({ kind: "group" as const, group: g }));
+ }
+
+ const segmentStarts: number[] = [];
+ for (let i = 0; i < groups.length; i++) {
+ const g = groups[i];
+ if (g !== undefined && g.kind === "single" && g.chunk.role === "user") {
+ segmentStarts.push(i);
+ }
+ }
+
+ let T = segmentStarts.length;
+
+ // No user messages — e.g. a compacted conversation whose history starts
+ // with a system summary. Treat the entire transcript as one segment so
+ // turn/step metrics can still be placed.
+ if (T === 0 && entries.length > 0) {
+ segmentStarts.push(0);
+ T = 1;
+ }
+
+ if (T === 0) {
+ return groups.map((g) => ({ kind: "group" as const, group: g }));
+ }
+
+ const K = entries.length;
+
+ // Build stepId → entry-index lookup for matching.
+ const entryStepIds: Set<string>[] = entries.map((e) => new Set(e.steps.map((s) => s.stepId)));
+
+ // Match segments to entries. Pass 1: match by stepId overlap (handles
+ // trimming where positional alignment alone could be ambiguous). Pass 2:
+ // positional tail-alignment fallback for unmatched segments (text-only turns
+ // with no stepId-bearing groups).
+ const usedEntries = new Set<number>();
+ const segmentEntry = new Map<number, TurnMetricsEntry>();
+ const segmentEntryIndex = new Map<number, number>();
+
+ // Pass 1: stepId matching.
+ for (let seg = 0; seg < T; seg++) {
+ const start = segmentStarts[seg] ?? 0;
+ const end = seg + 1 < T ? (segmentStarts[seg + 1] ?? groups.length) : groups.length;
+
+ const segStepIds = new Set<string>();
+ for (let i = start; i < end; i++) {
+ const g = groups[i];
+ if (g === undefined) continue;
+ const sid = groupStepId(g);
+ if (sid !== undefined) segStepIds.add(sid);
+ }
+ if (segStepIds.size === 0) continue; // text-only — defer to pass 2
+
+ let bestEntry = -1;
+ let bestMatch = 0;
+ for (let i = 0; i < K; i++) {
+ if (usedEntries.has(i)) continue;
+ let match = 0;
+ for (const sid of segStepIds) {
+ if (entryStepIds[i]?.has(sid)) match++;
+ }
+ if (match > bestMatch) {
+ bestMatch = match;
+ bestEntry = i;
+ }
+ }
+ if (bestEntry >= 0) {
+ usedEntries.add(bestEntry);
+ const e = entries[bestEntry];
+ if (e !== undefined) {
+ segmentEntry.set(seg, e);
+ segmentEntryIndex.set(seg, bestEntry);
+ }
+ }
+ }
+
+ // Pass 2: positional fallback for segments pass 1 left unmatched
+ // (text-only turns with no stepId-bearing groups to anchor on).
+ //
+ // The loaded transcript is always a SUFFIX of the full turn history —
+ // chat-limit/windowing keeps the NEWEST chunks and unloads the OLDEST — so
+ // the T loaded segments correspond to the LAST T entries. TAIL-ALIGNMENT
+ // (segment `seg` ↔ entry `K - T + seg`) is therefore correct whenever the
+ // metrics hold at least as many turns as there are loaded segments
+ // (`K >= T`): the leading `K - T` entries are TRIMMED turns (their content
+ // was unloaded) and must be skipped, never matched to a newer segment.
+ //
+ // This MUST run even when pass 1 matched SOME segments (tool turns). The
+ // earlier code only tail-aligned when pass 1 matched NONE, falling back to
+ // HEAD-alignment otherwise — which, with leading trimmed entries, matched a
+ // brand-new text-only turn to an old (trimmed) entry's STALE metrics (the
+ // "new steps show no / wrong cache" failure). Tail-aligning by position is
+ // safe alongside pass 1: stepIds are unique per turn, so pass 1 already
+ // grabbed each tool turn's positionally-correct entry, leaving the right
+ // entry free for each text-only turn.
+ //
+ // Only when `K < T` (fewer entries than segments — some loaded turns have no
+ // metrics yet, e.g. a metrics sync still pending or a freshly loaded
+ // transcript) do we head-align, assigning the first K entries to the first K
+ // unmatched segments (the turns that DO have metrics sit at the front).
+ if (K >= T) {
+ // Tail-align: skip the first K-T entries (trimmed turns).
+ for (let seg = 0; seg < T; seg++) {
+ if (segmentEntry.has(seg)) continue;
+ const entryIdx = K - T + seg;
+ if (entryIdx >= 0 && entryIdx < K && !usedEntries.has(entryIdx)) {
+ usedEntries.add(entryIdx);
+ const e = entries[entryIdx];
+ if (e !== undefined) {
+ segmentEntry.set(seg, e);
+ segmentEntryIndex.set(seg, entryIdx);
+ }
+ }
+ }
+ } else {
+ // Head-align fallback (K < T): first K entries to first K unmatched segments.
+ let nextUnused = 0;
+ for (let seg = 0; seg < T; seg++) {
+ if (segmentEntry.has(seg)) continue;
+ while (nextUnused < K && usedEntries.has(nextUnused)) nextUnused++;
+ if (nextUnused < K) {
+ usedEntries.add(nextUnused);
+ const e = entries[nextUnused];
+ if (e !== undefined) {
+ segmentEntry.set(seg, e);
+ segmentEntryIndex.set(seg, nextUnused);
+ }
+ nextUnused++;
+ }
+ }
+ }
+
+ // Running cumulative usage across ALL finalized turns (in entry order), for
+ // the per-turn "chat total" cache rate. Alongside it, the previous finalized
+ // turn's usage at each index — the baseline for cross-turn retention.
+ const cumulativeByEntry: Usage[] = [];
+ const prevUsageByEntry: (Usage | null)[] = [];
+ let runningUsage: Usage = { inputTokens: 0, outputTokens: 0 };
+ let lastFinalizedUsage: Usage | null = null;
+ for (const e of entries) {
+ prevUsageByEntry.push(lastFinalizedUsage);
+ if (e.total !== null) {
+ runningUsage = addUsage(runningUsage, e.total.usage);
+ lastFinalizedUsage = e.total.usage;
+ }
+ cumulativeByEntry.push(runningUsage);
+ }
+
+ const rows: MetricsRow[] = [];
+
+ const firstUserIdx = segmentStarts[0] ?? 0;
+
+ for (let i = 0; i < firstUserIdx; i++) {
+ const g = groups[i];
+ if (g !== undefined) {
+ rows.push({ kind: "group", group: g });
+ }
+ }
+
+ for (let seg = 0; seg < T; seg++) {
+ const start = segmentStarts[seg] ?? 0;
+ const end = seg + 1 < T ? (segmentStarts[seg + 1] ?? groups.length) : groups.length;
+
+ const entry = segmentEntry.get(seg);
+
+ if (entry === undefined) {
+ for (let i = start; i < end; i++) {
+ const g = groups[i];
+ if (g !== undefined) {
+ rows.push({ kind: "group", group: g });
+ }
+ }
+ continue;
+ }
+
+ const entryIdx = segmentEntryIndex.get(seg) ?? 0;
+
+ // Build anchor map: for each stepId, the LAST group index in this segment.
+ const anchorByStepId = new Map<string, number>();
+ for (let i = start; i < end; i++) {
+ const g = groups[i];
+ if (g === undefined) continue;
+ const sid = groupStepId(g);
+ if (sid !== undefined) {
+ anchorByStepId.set(sid, i);
+ }
+ }
+
+ // Classify each step as anchored or unanchored. Unanchored steps
+ // (content trimmed, or text-only steps with no tool chunks) are SKIPPED —
+ // step-metrics are only shown inline next to the content they describe.
+ const anchored: Map<number, { stepIndex: number; step: (typeof entry.steps)[number] }[]> =
+ new Map();
+
+ for (let i = 0; i < entry.steps.length; i++) {
+ const step = entry.steps[i];
+ if (step === undefined) continue;
+ const anchorGroupIdx = anchorByStepId.get(step.stepId);
+ if (anchorGroupIdx !== undefined) {
+ let arr = anchored.get(anchorGroupIdx);
+ if (arr === undefined) {
+ arr = [];
+ anchored.set(anchorGroupIdx, arr);
+ }
+ arr.push({ stepIndex: i, step });
+ }
+ // Unanchored steps (no matching group) are skipped — no tail bubbles.
+ }
+
+ // Emit groups; after each anchored group, emit its step-metrics rows.
+ for (let i = start; i < end; i++) {
+ const g = groups[i];
+ if (g !== undefined) {
+ rows.push({ kind: "group", group: g });
+ }
+ const stepsHere = anchored.get(i);
+ if (stepsHere !== undefined) {
+ stepsHere.sort((a, b) => a.stepIndex - b.stepIndex);
+ for (const { step, stepIndex } of stepsHere) {
+ rows.push({ kind: "step-metrics", step, index: stepIndex });
+ }
+ }
+ }
+
+ // Turn-metrics row (only when the turn is finalized). Unanchored steps
+ // are skipped — no tail bubbles.
+ if (entry.total !== null) {
+ rows.push({
+ kind: "turn-metrics",
+ turn: entry.total,
+ turnNumber: entryIdx + 1,
+ cumulativeUsage: cumulativeByEntry[entryIdx] ?? entry.total.usage,
+ prevTurnUsage: prevUsageByEntry[entryIdx] ?? null,
+ });
+ }
+ }
+
+ return rows;
+}
diff --git a/src/core/metrics/reducer.test.ts b/src/core/metrics/reducer.test.ts
new file mode 100644
index 0000000..581a8b7
--- /dev/null
+++ b/src/core/metrics/reducer.test.ts
@@ -0,0 +1,689 @@
+import type { StepId, TurnDoneEvent, TurnStepCompleteEvent, TurnUsageEvent } from "@dispatch/wire";
+import { describe, expect, it } from "vitest";
+import {
+ applyDurableMetrics,
+ foldMetricsEvent,
+ initialMetricsState,
+ selectCurrentContextSize,
+ selectOrderedTurnMetrics,
+} from "./reducer";
+
+const usageEvent = (
+ turnId: string,
+ inputTokens: number,
+ outputTokens: number,
+ stepId?: string,
+): TurnUsageEvent => {
+ const base = {
+ type: "usage" as const,
+ conversationId: "c1",
+ turnId,
+ usage: { inputTokens, outputTokens },
+ };
+ if (stepId !== undefined) {
+ return { ...base, stepId: stepId as StepId };
+ }
+ return base;
+};
+
+const stepCompleteEvent = (
+ turnId: string,
+ stepId: string,
+ timing: { ttftMs?: number; decodeMs?: number; genTotalMs?: number } = {},
+): TurnStepCompleteEvent => ({
+ type: "step-complete",
+ conversationId: "c1",
+ turnId,
+ stepId: stepId as StepId,
+ ...timing,
+});
+
+const doneEvent = (
+ turnId: string,
+ extra: {
+ durationMs?: number;
+ usage?: { inputTokens: number; outputTokens: number };
+ contextSize?: number;
+ } = {},
+): TurnDoneEvent => ({
+ type: "done",
+ conversationId: "c1",
+ turnId,
+ reason: "stop",
+ ...extra,
+});
+
+describe("initialMetricsState", () => {
+ it("starts empty", () => {
+ const s = initialMetricsState();
+ expect(s.live.size).toBe(0);
+ expect(s.liveOrder).toEqual([]);
+ expect(s.durable.size).toBe(0);
+ expect(s.durableOrder).toEqual([]);
+ });
+});
+
+describe("foldMetricsEvent", () => {
+ it("folds per-step usage by stepId into a turn", () => {
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, usageEvent("t1", 100, 50, "s1"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s1"));
+ s = foldMetricsEvent(s, usageEvent("t1", 200, 80, "s2"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s2"));
+ s = foldMetricsEvent(s, doneEvent("t1"));
+
+ const ordered = selectOrderedTurnMetrics(s);
+ expect(ordered).toHaveLength(1);
+ expect(ordered[0]?.turnId).toBe("t1");
+ expect(ordered[0]?.steps).toHaveLength(2);
+ expect(ordered[0]?.steps[0]?.stepId).toBe("s1");
+ expect(ordered[0]?.steps[0]?.usage).toEqual({ inputTokens: 100, outputTokens: 50 });
+ expect(ordered[0]?.steps[1]?.stepId).toBe("s2");
+ expect(ordered[0]?.steps[1]?.usage).toEqual({ inputTokens: 200, outputTokens: 80 });
+ });
+
+ it("folds step-complete timing and merges with same-step usage", () => {
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, usageEvent("t1", 100, 50, "s1"));
+ s = foldMetricsEvent(
+ s,
+ stepCompleteEvent("t1", "s1", { ttftMs: 200, decodeMs: 800, genTotalMs: 1000 }),
+ );
+ s = foldMetricsEvent(s, doneEvent("t1"));
+
+ const ordered = selectOrderedTurnMetrics(s);
+ expect(ordered).toHaveLength(1);
+ const step = ordered[0]?.steps[0];
+ expect(step?.usage).toEqual({ inputTokens: 100, outputTokens: 50 });
+ expect(step?.ttftMs).toBe(200);
+ expect(step?.decodeMs).toBe(800);
+ expect(step?.genTotalMs).toBe(1000);
+ });
+
+ it("step-complete before usage defaults usage to zeros", () => {
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s1", { genTotalMs: 500 }));
+ s = foldMetricsEvent(s, doneEvent("t1"));
+
+ const ordered = selectOrderedTurnMetrics(s);
+ const step = ordered[0]?.steps[0];
+ expect(step?.usage).toEqual({ inputTokens: 0, outputTokens: 0 });
+ expect(step?.genTotalMs).toBe(500);
+ });
+
+ it("done sets durationMs and aggregate usage", () => {
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, usageEvent("t1", 100, 50, "s1"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s1"));
+ s = foldMetricsEvent(
+ s,
+ doneEvent("t1", {
+ durationMs: 5000,
+ usage: { inputTokens: 300, outputTokens: 150 },
+ }),
+ );
+
+ const ordered = selectOrderedTurnMetrics(s);
+ expect(ordered[0]?.total?.durationMs).toBe(5000);
+ expect(ordered[0]?.total?.usage).toEqual({ inputTokens: 300, outputTokens: 150 });
+ });
+
+ it("aggregate usage sums steps when done.usage absent", () => {
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, usageEvent("t1", 100, 50, "s1"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s1"));
+ s = foldMetricsEvent(s, usageEvent("t1", 200, 80, "s2"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s2"));
+ s = foldMetricsEvent(s, doneEvent("t1"));
+
+ const ordered = selectOrderedTurnMetrics(s);
+ expect(ordered[0]?.total?.usage).toEqual({ inputTokens: 300, outputTokens: 130 });
+ });
+
+ it("aggregate usage includes cache only when a step had cache", () => {
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, {
+ type: "usage",
+ conversationId: "c1",
+ turnId: "t1",
+ stepId: "s1" as StepId,
+ usage: { inputTokens: 100, outputTokens: 50, cacheReadTokens: 30 },
+ });
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s1"));
+ s = foldMetricsEvent(s, usageEvent("t1", 200, 80, "s2"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s2"));
+ s = foldMetricsEvent(s, doneEvent("t1"));
+
+ const ordered = selectOrderedTurnMetrics(s);
+ expect(ordered[0]?.total?.usage.cacheReadTokens).toBe(30);
+ expect(ordered[0]?.total?.usage.cacheWriteTokens).toBeUndefined();
+ });
+
+ it("tolerates missing clock (no genTotalMs/ttft/decode)", () => {
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, usageEvent("t1", 100, 50, "s1"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s1"));
+ s = foldMetricsEvent(s, doneEvent("t1"));
+
+ const ordered = selectOrderedTurnMetrics(s);
+ const step = ordered[0]?.steps[0];
+ expect(step?.ttftMs).toBeUndefined();
+ expect(step?.decodeMs).toBeUndefined();
+ expect(step?.genTotalMs).toBeUndefined();
+ expect(ordered[0]?.total?.durationMs).toBeUndefined();
+ });
+
+ it("usage without stepId does not create a turn", () => {
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, usageEvent("t1", 100, 50));
+
+ const ordered = selectOrderedTurnMetrics(s);
+ expect(ordered).toHaveLength(0);
+ });
+
+ it("ignores non-metrics events", () => {
+ const s = initialMetricsState();
+ const next = foldMetricsEvent(s, {
+ type: "status",
+ conversationId: "c1",
+ status: "running",
+ });
+ expect(next).toBe(s);
+ });
+
+ it("preserves first-seen order of steps", () => {
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, usageEvent("t1", 10, 5, "s2"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s2"));
+ s = foldMetricsEvent(s, usageEvent("t1", 20, 8, "s1"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s1"));
+ s = foldMetricsEvent(s, doneEvent("t1"));
+
+ const ordered = selectOrderedTurnMetrics(s);
+ expect(ordered[0]?.steps[0]?.stepId).toBe("s2");
+ expect(ordered[0]?.steps[1]?.stepId).toBe("s1");
+ });
+
+ it("preserves first-seen order of turns", () => {
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, usageEvent("t2", 10, 5, "s1"));
+ s = foldMetricsEvent(s, usageEvent("t1", 20, 8, "s1"));
+ s = foldMetricsEvent(s, doneEvent("t2"));
+ s = foldMetricsEvent(s, doneEvent("t1"));
+
+ const ordered = selectOrderedTurnMetrics(s);
+ expect(ordered[0]?.turnId).toBe("t2");
+ expect(ordered[1]?.turnId).toBe("t1");
+ });
+});
+
+describe("selectOrderedTurnMetrics", () => {
+ it("durable wins over live by turnId, live-done appended last", () => {
+ let s = initialMetricsState();
+
+ s = foldMetricsEvent(s, usageEvent("t1", 100, 50, "s1"));
+ s = foldMetricsEvent(s, usageEvent("t2", 200, 80, "s1"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t2", "s1"));
+ s = foldMetricsEvent(s, doneEvent("t2"));
+
+ s = applyDurableMetrics(s, [
+ {
+ turnId: "t1",
+ usage: { inputTokens: 999, outputTokens: 999 },
+ durationMs: 3000,
+ steps: [
+ {
+ stepId: "s1" as StepId,
+ usage: { inputTokens: 999, outputTokens: 999 },
+ genTotalMs: 3000,
+ },
+ ],
+ },
+ ]);
+
+ const ordered = selectOrderedTurnMetrics(s);
+ expect(ordered).toHaveLength(2);
+ expect(ordered[0]?.turnId).toBe("t1");
+ expect(ordered[0]?.total?.usage.inputTokens).toBe(999);
+ expect(ordered[0]?.total?.durationMs).toBe(3000);
+ expect(ordered[1]?.turnId).toBe("t2");
+ expect(ordered[1]?.total?.durationMs).toBeUndefined();
+ });
+
+ it("empty state returns empty", () => {
+ const s = initialMetricsState();
+ expect(selectOrderedTurnMetrics(s)).toEqual([]);
+ });
+
+ it("selectOrderedTurnMetrics: in-flight turn exposes only completed steps and total=null", () => {
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, usageEvent("t1", 100, 50, "s1"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s1", { genTotalMs: 1000 }));
+ s = foldMetricsEvent(s, usageEvent("t1", 200, 80, "s2"));
+
+ const ordered = selectOrderedTurnMetrics(s);
+ expect(ordered).toHaveLength(1);
+ expect(ordered[0]?.turnId).toBe("t1");
+ expect(ordered[0]?.steps).toHaveLength(1);
+ expect(ordered[0]?.steps[0]?.stepId).toBe("s1");
+ expect(ordered[0]?.total).toBeNull();
+ });
+
+ it("selectOrderedTurnMetrics: a turn with no complete step and not done is omitted", () => {
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, usageEvent("t1", 100, 50, "s1"));
+ s = foldMetricsEvent(s, usageEvent("t1", 200, 80, "s2"));
+
+ const ordered = selectOrderedTurnMetrics(s);
+ expect(ordered).toHaveLength(0);
+ });
+
+ it("selectOrderedTurnMetrics: after done, total is present", () => {
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, usageEvent("t1", 100, 50, "s1"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s1", { genTotalMs: 1000 }));
+ s = foldMetricsEvent(s, doneEvent("t1", { durationMs: 2000 }));
+
+ const ordered = selectOrderedTurnMetrics(s);
+ expect(ordered).toHaveLength(1);
+ expect(ordered[0]?.turnId).toBe("t1");
+ expect(ordered[0]?.total?.durationMs).toBe(2000);
+ expect(ordered[0]?.steps).toHaveLength(1);
+ });
+
+ it("step-complete marks the step complete", () => {
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, usageEvent("t1", 100, 50, "s1"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s1", { genTotalMs: 500 }));
+
+ const ordered = selectOrderedTurnMetrics(s);
+ expect(ordered).toHaveLength(1);
+ expect(ordered[0]?.steps).toHaveLength(1);
+ expect(ordered[0]?.steps[0]?.stepId).toBe("s1");
+ expect(ordered[0]?.steps[0]?.genTotalMs).toBe(500);
+ });
+
+ it("selectOrderedTurnMetrics: durable turn → steps + total present", () => {
+ let s = initialMetricsState();
+ s = applyDurableMetrics(s, [
+ {
+ turnId: "t1",
+ usage: { inputTokens: 300, outputTokens: 150 },
+ durationMs: 5000,
+ steps: [
+ {
+ stepId: "s1" as StepId,
+ usage: { inputTokens: 100, outputTokens: 50 },
+ genTotalMs: 1000,
+ },
+ {
+ stepId: "s2" as StepId,
+ usage: { inputTokens: 200, outputTokens: 100 },
+ genTotalMs: 2000,
+ },
+ ],
+ },
+ ]);
+
+ const ordered = selectOrderedTurnMetrics(s);
+ expect(ordered).toHaveLength(1);
+ expect(ordered[0]?.turnId).toBe("t1");
+ expect(ordered[0]?.steps).toHaveLength(2);
+ expect(ordered[0]?.steps[0]?.stepId).toBe("s1");
+ expect(ordered[0]?.steps[1]?.stepId).toBe("s2");
+ expect(ordered[0]?.total?.usage.inputTokens).toBe(300);
+ expect(ordered[0]?.total?.durationMs).toBe(5000);
+ });
+});
+
+describe("applyDurableMetrics", () => {
+ it("stores durable turns in order", () => {
+ let s = initialMetricsState();
+ s = applyDurableMetrics(s, [
+ { turnId: "t1", usage: { inputTokens: 10, outputTokens: 5 }, steps: [] },
+ { turnId: "t2", usage: { inputTokens: 20, outputTokens: 8 }, steps: [] },
+ ]);
+ expect(s.durableOrder).toEqual(["t1", "t2"]);
+ expect(s.durable.size).toBe(2);
+ });
+
+ it("is idempotent for same turnId", () => {
+ let s = initialMetricsState();
+ const turn = {
+ turnId: "t1",
+ usage: { inputTokens: 10, outputTokens: 5 },
+ steps: [],
+ };
+ s = applyDurableMetrics(s, [turn]);
+ s = applyDurableMetrics(s, [turn]);
+ expect(s.durableOrder).toEqual(["t1"]);
+ expect(s.durable.size).toBe(1);
+ });
+
+ it("overwrites durable turn data for same turnId", () => {
+ let s = initialMetricsState();
+ s = applyDurableMetrics(s, [
+ { turnId: "t1", usage: { inputTokens: 10, outputTokens: 5 }, steps: [] },
+ ]);
+ s = applyDurableMetrics(s, [
+ { turnId: "t1", usage: { inputTokens: 99, outputTokens: 99 }, steps: [] },
+ ]);
+ expect(s.durable.get("t1")?.usage.inputTokens).toBe(99);
+ });
+});
+
+describe("contextSize / selectCurrentContextSize", () => {
+ it("live done carries contextSize onto the turn total", () => {
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, usageEvent("t1", 100, 50, "s1"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s1"));
+ s = foldMetricsEvent(s, doneEvent("t1", { contextSize: 1234 }));
+
+ const ordered = selectOrderedTurnMetrics(s);
+ expect(ordered[0]?.total?.contextSize).toBe(1234);
+ expect(selectCurrentContextSize(s)).toBe(1234);
+ });
+
+ it("contextSize is NOT the aggregate usage sum (multi-step turn)", () => {
+ let s = initialMetricsState();
+ // Two steps: usage sums to 300 in / 130 out = 430, but contextSize is the
+ // backend-stamped final-step occupancy, independent of the sum.
+ s = foldMetricsEvent(s, usageEvent("t1", 100, 50, "s1"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s1"));
+ s = foldMetricsEvent(s, usageEvent("t1", 200, 80, "s2"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s2"));
+ s = foldMetricsEvent(s, doneEvent("t1", { contextSize: 250 }));
+
+ const ordered = selectOrderedTurnMetrics(s);
+ expect(ordered[0]?.total?.usage).toEqual({ inputTokens: 300, outputTokens: 130 });
+ expect(ordered[0]?.total?.contextSize).toBe(250);
+ expect(selectCurrentContextSize(s)).toBe(250);
+ });
+
+ it("persisted (durable) contextSize is preserved and selected", () => {
+ let s = initialMetricsState();
+ s = applyDurableMetrics(s, [
+ { turnId: "t1", usage: { inputTokens: 10, outputTokens: 5 }, steps: [], contextSize: 4096 },
+ ]);
+ expect(s.durable.get("t1")?.contextSize).toBe(4096);
+ expect(selectCurrentContextSize(s)).toBe(4096);
+ });
+
+ it("selectCurrentContextSize returns the LATEST turn's value", () => {
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, doneEvent("t1", { contextSize: 100 }));
+ s = foldMetricsEvent(s, doneEvent("t2", { contextSize: 900 }));
+ expect(selectCurrentContextSize(s)).toBe(900);
+ });
+
+ it("selectCurrentContextSize skips a later turn that lacks contextSize", () => {
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, doneEvent("t1", { contextSize: 700 }));
+ // t2 finishes but the provider reported no per-step usage → no contextSize.
+ s = foldMetricsEvent(s, doneEvent("t2"));
+ expect(selectCurrentContextSize(s)).toBe(700);
+ });
+
+ it("selectCurrentContextSize is undefined (not 0) when nothing reported", () => {
+ let s = initialMetricsState();
+ expect(selectCurrentContextSize(s)).toBeUndefined();
+ s = foldMetricsEvent(s, doneEvent("t1"));
+ expect(selectCurrentContextSize(s)).toBeUndefined();
+ });
+
+ it("durable contextSize wins over live for a shared turnId", () => {
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, doneEvent("t1", { contextSize: 111 }));
+ s = applyDurableMetrics(s, [
+ { turnId: "t1", usage: { inputTokens: 1, outputTokens: 1 }, steps: [], contextSize: 222 },
+ ]);
+ expect(selectCurrentContextSize(s)).toBe(222);
+ });
+
+ it("in-flight turn updates context size after the first step completes", () => {
+ // Before the requirement: an in-flight turn had total=null so its step usage
+ // was ignored until `done`. Now the latest step's input+output is used.
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, usageEvent("t1", 5000, 200, "s1"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s1"));
+
+ // Still generating (no done) — context = step 1 input+output = 5200.
+ expect(selectCurrentContextSize(s)).toBe(5200);
+ });
+
+ it("in-flight turn updates progressively as each step reports usage", () => {
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, usageEvent("t1", 5000, 200, "s1"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s1"));
+ expect(selectCurrentContextSize(s)).toBe(5200);
+
+ // Step 2 reports usage mid-stream (before its step-complete): each step's
+ // input already includes all prior context, so the last step's input+output
+ // is the current occupancy.
+ s = foldMetricsEvent(s, usageEvent("t1", 5200, 150, "s2"));
+ expect(selectCurrentContextSize(s)).toBe(5350);
+
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s2"));
+ expect(selectCurrentContextSize(s)).toBe(5350);
+ });
+
+ it("in-flight context size is the latest step with usage, NOT the aggregate sum", () => {
+ // Mirrors the finalized-turn test: contextSize is the FINAL step's
+ // input+output, not the sum across steps (which would overcount a
+ // multi-step turn because every step re-prefills the growing prompt).
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, usageEvent("t1", 100, 50, "s1"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s1"));
+ s = foldMetricsEvent(s, usageEvent("t1", 200, 80, "s2"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s2"));
+ // Aggregate would be 300+130=430; the latest step is 200+80=280.
+ expect(selectCurrentContextSize(s)).toBe(280);
+ });
+
+ it("in-flight turn with a step-complete but no usage falls back to older turn", () => {
+ // step-complete before usage → the step has no usage yet, so the in-flight
+ // turn exposes no context size and the display falls back to the prior
+ // finalized turn's value (never 0).
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, doneEvent("t1", { contextSize: 700 }));
+ s = foldMetricsEvent(s, stepCompleteEvent("t2", "s1", { genTotalMs: 500 }));
+
+ expect(selectCurrentContextSize(s)).toBe(700);
+ });
+
+ it("in-flight turn with no steps/usage returns undefined (falls back)", () => {
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, doneEvent("t1", { contextSize: 700 }));
+ // t2 just started — no usage, no complete step — omitted entirely.
+ s = foldMetricsEvent(s, { type: "turn-start", conversationId: "c1", turnId: "t2" });
+ expect(selectCurrentContextSize(s)).toBe(700);
+
+ // t2's first step reports usage → the display jumps to t2's live value.
+ s = foldMetricsEvent(s, usageEvent("t2", 800, 10, "s1"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t2", "s1"));
+ expect(selectCurrentContextSize(s)).toBe(810);
+ });
+
+ it("done finalizes the in-flight progressive value with the authoritative contextSize", () => {
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, usageEvent("t1", 5000, 200, "s1"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s1"));
+ expect(selectCurrentContextSize(s)).toBe(5200);
+
+ s = foldMetricsEvent(s, usageEvent("t1", 5200, 150, "s2"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s2"));
+ expect(selectCurrentContextSize(s)).toBe(5350);
+
+ // done stamps the authoritative contextSize (the final step's input+output).
+ s = foldMetricsEvent(s, doneEvent("t1", { contextSize: 5350 }));
+ expect(selectCurrentContextSize(s)).toBe(5350);
+ });
+
+ it("in-flight context size excludes cache tokens (they are a subset of inputTokens)", () => {
+ // cacheReadTokens / cacheWriteTokens are portions of inputTokens already
+ // counted — adding them would double-count. Only input+output is occupancy.
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, {
+ type: "usage",
+ conversationId: "c1",
+ turnId: "t1",
+ stepId: "s1" as StepId,
+ usage: {
+ inputTokens: 5000,
+ outputTokens: 200,
+ cacheReadTokens: 4000,
+ cacheWriteTokens: 1000,
+ },
+ });
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s1"));
+ // 5000+200=5200, NOT 9200 (with cacheRead) or 10200 (with both).
+ expect(selectCurrentContextSize(s)).toBe(5200);
+ });
+
+ it("multiple in-flight turns: the newest turn's live value wins", () => {
+ let s = initialMetricsState();
+ // t1 (older) in-flight with one completed step → 5200.
+ s = foldMetricsEvent(s, usageEvent("t1", 5000, 200, "s1"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s1"));
+ // t2 (newer, seen later → last in liveOrder) in-flight → 8000.
+ s = foldMetricsEvent(s, usageEvent("t2", 7800, 200, "s1"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t2", "s1"));
+ expect(selectCurrentContextSize(s)).toBe(8000);
+ });
+
+ it("out-of-order step IDs: usage for step 2 before step 1's step-complete still scans newest-first", () => {
+ // stepOrder is FIRST-SEEN: s1 (its usage arrived first), then s2. So s2 is
+ // the newest step regardless of when each step's step-complete arrives.
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, usageEvent("t1", 5000, 200, "s1"));
+ s = foldMetricsEvent(s, usageEvent("t1", 5200, 150, "s2"));
+ // Neither step complete yet → the turn is omitted (no complete step), so the
+ // display can't update until the first step completes.
+ expect(selectCurrentContextSize(s)).toBeUndefined();
+
+ // s1 completes AFTER s2's usage was reported. The turn is now visible; the
+ // newest-first scan picks s2 (the later step), not s1 (the just-completed one).
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s1"));
+ expect(selectCurrentContextSize(s)).toBe(5350);
+
+ // s2 completes — still s2, unchanged.
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s2"));
+ expect(selectCurrentContextSize(s)).toBe(5350);
+ });
+
+ it("done turn without contextSize falls back to an older turn (even with step usage)", () => {
+ // Contract lock-in: a done turn's step usage is NOT consulted for the
+ // context display — only its authoritative total.contextSize is. When that
+ // is absent, the display falls back to the next older finalized turn rather
+ // than synthesizing a value from the step usage.
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, doneEvent("t1", { contextSize: 700 }));
+ // t2 done WITH step usage but NO done.contextSize (edge case: the done event
+ // omitted contextSize despite per-step usage).
+ s = foldMetricsEvent(s, usageEvent("t2", 800, 10, "s1"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t2", "s1"));
+ s = foldMetricsEvent(s, doneEvent("t2"));
+ expect(selectCurrentContextSize(s)).toBe(700);
+ });
+
+ it("in-flight context size skips a step with unsafe usage (NaN / negative)", () => {
+ // A corrupt provider report must never reach the status bar. The newest
+ // step with invalid counters is skipped, falling back to the prior valid one.
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, usageEvent("t1", 5000, 200, "s1"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s1"));
+ // s2 reports NaN input (e.g. a non-numeric provider field coerced).
+ s = foldMetricsEvent(s, {
+ type: "usage",
+ conversationId: "c1",
+ turnId: "t1",
+ stepId: "s2" as StepId,
+ usage: { inputTokens: Number.NaN, outputTokens: 150 },
+ });
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s2"));
+ // s2 skipped (NaN) → falls back to s1's 5200, NOT NaN.
+ expect(selectCurrentContextSize(s)).toBe(5200);
+
+ // Negative tokens are likewise skipped.
+ s = foldMetricsEvent(s, {
+ type: "usage",
+ conversationId: "c1",
+ turnId: "t1",
+ stepId: "s3" as StepId,
+ usage: { inputTokens: -10, outputTokens: 5 },
+ });
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s3"));
+ expect(selectCurrentContextSize(s)).toBe(5200);
+ });
+});
+
+describe("applyDurableMetrics pruning", () => {
+ it("prunes a live turn once durable data covers it (no unbounded growth)", () => {
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, usageEvent("t1", 100, 50, "s1"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s1"));
+ s = foldMetricsEvent(s, doneEvent("t1", { contextSize: 150 }));
+ expect(s.live.has("t1")).toBe(true);
+ expect(s.liveOrder).toContain("t1");
+
+ s = applyDurableMetrics(s, [
+ {
+ turnId: "t1",
+ usage: { inputTokens: 100, outputTokens: 50 },
+ steps: [{ stepId: "s1" as StepId, usage: { inputTokens: 100, outputTokens: 50 } }],
+ contextSize: 150,
+ },
+ ]);
+ // The live copy is gone; the durable (authoritative) entry replaces it.
+ expect(s.live.has("t1")).toBe(false);
+ expect(s.liveOrder).not.toContain("t1");
+ expect(s.durable.has("t1")).toBe(true);
+ // The display still reads the durable value atomically (no gap).
+ expect(selectCurrentContextSize(s)).toBe(150);
+ });
+
+ it("prunes only the turns present in the durable batch (leaves other live turns)", () => {
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, usageEvent("t1", 100, 50, "s1"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t1", "s1"));
+ s = foldMetricsEvent(s, doneEvent("t1", { contextSize: 150 }));
+ // t2 still in flight — must NOT be pruned when only t1 seals.
+ s = foldMetricsEvent(s, usageEvent("t2", 800, 10, "s1"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t2", "s1"));
+
+ s = applyDurableMetrics(s, [
+ { turnId: "t1", usage: { inputTokens: 100, outputTokens: 50 }, steps: [], contextSize: 150 },
+ ]);
+ expect(s.live.has("t1")).toBe(false);
+ expect(s.live.has("t2")).toBe(true);
+ expect(s.liveOrder).toEqual(["t2"]);
+ // The newest (in-flight) turn's live value still wins.
+ expect(selectCurrentContextSize(s)).toBe(810);
+ });
+
+ it("is a no-op when no incoming turn is live (no live mutation)", () => {
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, usageEvent("t2", 800, 10, "s1"));
+ s = foldMetricsEvent(s, stepCompleteEvent("t2", "s1"));
+ const before = s;
+ s = applyDurableMetrics(s, [
+ { turnId: "t1", usage: { inputTokens: 1, outputTokens: 1 }, steps: [] },
+ ]);
+ // t1 was never live → the live map/order are unchanged (same reference).
+ expect(s.live).toBe(before.live);
+ expect(s.liveOrder).toBe(before.liveOrder);
+ // t1 (durable) is older; the in-flight t2 still wins.
+ expect(selectCurrentContextSize(s)).toBe(810);
+ });
+
+ it("durable wins over live for a shared turnId (pruned live no longer consulted)", () => {
+ let s = initialMetricsState();
+ s = foldMetricsEvent(s, doneEvent("t1", { contextSize: 111 }));
+ s = applyDurableMetrics(s, [
+ { turnId: "t1", usage: { inputTokens: 1, outputTokens: 1 }, steps: [], contextSize: 222 },
+ ]);
+ // The live (111) copy is pruned; only durable (222) remains.
+ expect(s.live.has("t1")).toBe(false);
+ expect(selectCurrentContextSize(s)).toBe(222);
+ });
+});
diff --git a/src/core/metrics/reducer.ts b/src/core/metrics/reducer.ts
new file mode 100644
index 0000000..39fc5ee
--- /dev/null
+++ b/src/core/metrics/reducer.ts
@@ -0,0 +1,345 @@
+import type { AgentEvent, StepId, StepMetrics, TurnMetrics, Usage } from "@dispatch/wire";
+import type { BuildingStep, LiveTurn, MetricsState, TurnMetricsEntry } from "./types";
+
+function sumStepUsages(steps: readonly BuildingStep[]): Usage {
+ let inputTokens = 0;
+ let outputTokens = 0;
+ let hasCacheRead = false;
+ let hasCacheWrite = false;
+ let cacheReadTokens = 0;
+ let cacheWriteTokens = 0;
+
+ for (const step of steps) {
+ if (step.usage === undefined) continue;
+ inputTokens += step.usage.inputTokens;
+ outputTokens += step.usage.outputTokens;
+ if (step.usage.cacheReadTokens !== undefined && step.usage.cacheReadTokens > 0) {
+ hasCacheRead = true;
+ cacheReadTokens += step.usage.cacheReadTokens;
+ }
+ if (step.usage.cacheWriteTokens !== undefined && step.usage.cacheWriteTokens > 0) {
+ hasCacheWrite = true;
+ cacheWriteTokens += step.usage.cacheWriteTokens;
+ }
+ }
+
+ const base: Usage = { inputTokens, outputTokens };
+ if (hasCacheRead) {
+ (base as { cacheReadTokens?: number }).cacheReadTokens = cacheReadTokens;
+ }
+ if (hasCacheWrite) {
+ (base as { cacheWriteTokens?: number }).cacheWriteTokens = cacheWriteTokens;
+ }
+ return base;
+}
+
+function buildingStepToMetrics(bs: BuildingStep): StepMetrics {
+ const usage: Usage = bs.usage ?? { inputTokens: 0, outputTokens: 0 };
+ const base: StepMetrics = { stepId: bs.stepId as StepId, usage };
+ if (bs.ttftMs !== undefined) {
+ (base as { ttftMs?: number }).ttftMs = bs.ttftMs;
+ }
+ if (bs.decodeMs !== undefined) {
+ (base as { decodeMs?: number }).decodeMs = bs.decodeMs;
+ }
+ if (bs.genTotalMs !== undefined) {
+ (base as { genTotalMs?: number }).genTotalMs = bs.genTotalMs;
+ }
+ return base;
+}
+
+function getStep(lt: LiveTurn, id: string): BuildingStep {
+ const step = lt.stepMap.get(id);
+ if (step === undefined) throw new Error(`Missing step ${id} in live turn`);
+ return step;
+}
+
+function liveTurnToMetrics(lt: LiveTurn): TurnMetrics {
+ const buildingSteps = lt.stepOrder.map((id) => getStep(lt, id));
+ const steps = buildingSteps.map((bs) => buildingStepToMetrics(bs));
+ const usage = lt.doneUsage ?? sumStepUsages(buildingSteps);
+ const base: TurnMetrics = { turnId: lt.turnId, usage, steps };
+ if (lt.durationMs !== undefined) {
+ (base as { durationMs?: number }).durationMs = lt.durationMs;
+ }
+ if (lt.doneContextSize !== undefined) {
+ (base as { contextSize?: number }).contextSize = lt.doneContextSize;
+ }
+ return base;
+}
+
+/**
+ * A step's contribution to the live context size: `inputTokens + outputTokens`,
+ * or `undefined` when the step has no usage yet OR its counters are not safe to
+ * sum (non-finite / negative — defensive: a corrupt provider report must never
+ * reach the status bar as NaN/Infinity). Cache tokens are deliberately NOT
+ * included: `cacheReadTokens` / `cacheWriteTokens` are a SUBSET of
+ * `inputTokens`, so adding them would double-count.
+ */
+function stepContextSize(usage: Usage | undefined): number | undefined {
+ if (usage === undefined) return undefined;
+ const { inputTokens, outputTokens } = usage;
+ if (!Number.isFinite(inputTokens) || !Number.isFinite(outputTokens)) return undefined;
+ if (inputTokens < 0 || outputTokens < 0) return undefined;
+ return inputTokens + outputTokens;
+}
+
+/**
+ * The context size an IN-FLIGHT (not-done) turn occupies right now — for
+ * progressive display DURING a turn (before it seals), so the indicator updates
+ * after each step instead of waiting for `done`.
+ *
+ * CONTRACT: only call this on a turn whose `done` event has NOT arrived (the
+ * caller, `selectCurrentContextSize`, reaches it solely for entries with
+ * `total === null`, i.e. `lt.done === false`). Finalized turns use their
+ * authoritative `contextSize` instead; `doneContextSize` is read on the
+ * `total` path, never here.
+ *
+ * Returns the most recent step WITH USABLE USAGE's `inputTokens + outputTokens`
+ * (scanning newest → oldest by first-seen step order): each step's input
+ * already includes all prior context (the prompt is re-prefilled every step), so
+ * the last step's input+output is the true occupancy — the same definition
+ * `TurnDoneEvent.contextSize` stamps at turn end. A just-reported step's usage
+ * wins immediately, even mid-stream. Steps with no usage or unsafe usage are
+ * skipped, falling back to the next older usable step. `undefined` when no step
+ * has reported usable usage yet.
+ */
+function liveTurnContextSize(lt: LiveTurn): number | undefined {
+ for (let i = lt.stepOrder.length - 1; i >= 0; i--) {
+ const step = lt.stepMap.get(lt.stepOrder[i] ?? "");
+ const ctx = stepContextSize(step?.usage);
+ if (ctx !== undefined) return ctx;
+ }
+ return undefined;
+}
+
+function ensureLiveTurn(state: MetricsState, turnId: string): [MetricsState, LiveTurn] {
+ const existing = state.live.get(turnId);
+ if (existing !== undefined) return [state, existing];
+
+ const newTurn: LiveTurn = {
+ turnId,
+ done: false,
+ durationMs: undefined,
+ doneUsage: undefined,
+ doneContextSize: undefined,
+ stepMap: new Map(),
+ stepOrder: [],
+ };
+ const newLive = new Map(state.live);
+ newLive.set(turnId, newTurn);
+ return [{ ...state, live: newLive, liveOrder: [...state.liveOrder, turnId] }, newTurn];
+}
+
+function upsertStep(lt: LiveTurn, stepId: string, update: Partial<BuildingStep>): LiveTurn {
+ const existing = lt.stepMap.get(stepId);
+ if (existing !== undefined) {
+ const merged: BuildingStep = {
+ stepId,
+ usage: update.usage ?? existing.usage,
+ ttftMs: update.ttftMs ?? existing.ttftMs,
+ decodeMs: update.decodeMs ?? existing.decodeMs,
+ genTotalMs: update.genTotalMs ?? existing.genTotalMs,
+ complete: update.complete ?? existing.complete,
+ };
+ const newMap = new Map(lt.stepMap);
+ newMap.set(stepId, merged);
+ return { ...lt, stepMap: newMap };
+ }
+
+ const fresh: BuildingStep = {
+ stepId,
+ usage: update.usage,
+ ttftMs: update.ttftMs,
+ decodeMs: update.decodeMs,
+ genTotalMs: update.genTotalMs,
+ complete: update.complete ?? false,
+ };
+ const newMap = new Map(lt.stepMap);
+ newMap.set(stepId, fresh);
+ return { ...lt, stepMap: newMap, stepOrder: [...lt.stepOrder, stepId] };
+}
+
+/** The initial empty metrics state. */
+export function initialMetricsState(): MetricsState {
+ return {
+ live: new Map(),
+ liveOrder: [],
+ durable: new Map(),
+ durableOrder: [],
+ };
+}
+
+/**
+ * Fold one live AgentEvent into the metrics state.
+ *
+ * - `usage` with `stepId`: upsert that step's usage.
+ * - `usage` without `stepId`: ignored.
+ * - `step-complete`: upsert that step's timing; default usage to zeros if absent.
+ * - `done`: set turn's `durationMs`, optional aggregate `usage`, and optional `contextSize`.
+ * - All other event types: return state unchanged.
+ */
+export function foldMetricsEvent(state: MetricsState, event: AgentEvent): MetricsState {
+ switch (event.type) {
+ case "usage": {
+ if (event.stepId === undefined) return state;
+ const [s1, lt] = ensureLiveTurn(state, event.turnId);
+ const updated = upsertStep(lt, event.stepId, { usage: event.usage });
+ const newLive = new Map(s1.live);
+ newLive.set(event.turnId, updated);
+ return { ...s1, live: newLive };
+ }
+
+ case "step-complete": {
+ const [s1, lt] = ensureLiveTurn(state, event.turnId);
+ const updated = upsertStep(lt, event.stepId, {
+ ttftMs: event.ttftMs,
+ decodeMs: event.decodeMs,
+ genTotalMs: event.genTotalMs,
+ complete: true,
+ });
+ const newLive = new Map(s1.live);
+ newLive.set(event.turnId, updated);
+ return { ...s1, live: newLive };
+ }
+
+ case "done": {
+ const [s1, lt] = ensureLiveTurn(state, event.turnId);
+ const updated: LiveTurn = {
+ ...lt,
+ done: true,
+ durationMs: event.durationMs ?? lt.durationMs,
+ doneUsage: event.usage ?? lt.doneUsage,
+ doneContextSize: event.contextSize ?? lt.doneContextSize,
+ };
+ const newLive = new Map(s1.live);
+ newLive.set(event.turnId, updated);
+ return { ...s1, live: newLive };
+ }
+
+ default:
+ return state;
+ }
+}
+
+/**
+ * Store durable (sealed) metrics from the backend. These win over live data
+ * for any shared `turnId`.
+ *
+ * Once durable (authoritative) data covers a turn, its live (in-memory) copy
+ * is REDUNDANT and is pruned from `state.live` / `liveOrder` so the live map
+ * doesn't grow unbounded over a long conversation. There is no display gap:
+ * the durable entry replaces the live one atomically in the same fold, and
+ * `selectOrderedTurnMetrics` / `selectCurrentContextSize` read durable for it.
+ */
+export function applyDurableMetrics(
+ state: MetricsState,
+ turns: readonly TurnMetrics[],
+): MetricsState {
+ const newDurable = new Map(state.durable);
+ const newDurableOrder = [...state.durableOrder];
+ const prunedIds = new Set<string>();
+ for (const turn of turns) {
+ if (!newDurable.has(turn.turnId)) {
+ newDurableOrder.push(turn.turnId);
+ }
+ newDurable.set(turn.turnId, turn);
+ if (state.live.has(turn.turnId)) prunedIds.add(turn.turnId);
+ }
+
+ if (prunedIds.size === 0) {
+ return { ...state, durable: newDurable, durableOrder: newDurableOrder };
+ }
+
+ const newLive = new Map(state.live);
+ for (const id of prunedIds) newLive.delete(id);
+ const newLiveOrder = state.liveOrder.filter((id) => !prunedIds.has(id));
+
+ return {
+ ...state,
+ live: newLive,
+ liveOrder: newLiveOrder,
+ durable: newDurable,
+ durableOrder: newDurableOrder,
+ };
+}
+
+/**
+ * Select the merged ordered list of turn metrics entries.
+ * Durable turns come first (in their order), then any live turns whose
+ * `turnId` is not in durable (in live first-seen order).
+ *
+ * Each entry contains the completed steps so far and an optional total
+ * (null until the turn is finalized via `done` or durable data).
+ * Live turns with no completed steps and not done are omitted.
+ */
+export function selectOrderedTurnMetrics(state: MetricsState): readonly TurnMetricsEntry[] {
+ const result: TurnMetricsEntry[] = [];
+ const seen = new Set<string>();
+
+ for (const turnId of state.durableOrder) {
+ const tm = state.durable.get(turnId);
+ if (tm !== undefined) {
+ result.push({ turnId, steps: tm.steps, total: tm });
+ seen.add(turnId);
+ }
+ }
+
+ for (const turnId of state.liveOrder) {
+ if (seen.has(turnId)) continue;
+ const lt = state.live.get(turnId);
+ if (lt === undefined) continue;
+
+ const completeSteps = lt.stepOrder
+ .map((id) => lt.stepMap.get(id))
+ .filter((s): s is BuildingStep => s?.complete === true)
+ .map((s) => buildingStepToMetrics(s));
+
+ if (completeSteps.length === 0 && !lt.done) continue;
+
+ result.push({
+ turnId,
+ steps: completeSteps,
+ total: lt.done ? liveTurnToMetrics(lt) : null,
+ });
+ }
+
+ return result;
+}
+
+/**
+ * Select the conversation's CURRENT context size — the tokens it occupies right
+ * now. Per the wire contract a client reads the LATEST turn's `contextSize`; we
+ * scan the merged ordered turns NEWEST → OLDEST and return the first DEFINED
+ * value.
+ *
+ * For a FINALIZED turn (`done` event or durable data) we use its authoritative
+ * `contextSize`. For an IN-FLIGHT (not-done) turn we compute it PROGRESSIVELY
+ * from the most recent step WITH USAGE — its `inputTokens + outputTokens` is the
+ * current occupancy (mirroring `TurnDoneEvent.contextSize`'s definition) — so
+ * the indicator updates after each step completes instead of waiting for the
+ * turn to seal. An in-flight turn with no step usage yet is skipped, falling
+ * back to the next older finalized turn.
+ *
+ * Returns `undefined` ("unknown") when no turn carries a context size — the
+ * caller renders a placeholder, NEVER `0`. Durable (sealed) data wins over
+ * live for a shared `turnId` (it is the persisted, authoritative value).
+ */
+export function selectCurrentContextSize(state: MetricsState): number | undefined {
+ const ordered = selectOrderedTurnMetrics(state);
+ for (let i = ordered.length - 1; i >= 0; i--) {
+ const entry = ordered[i];
+ if (entry === undefined) continue;
+ if (entry.total !== null) {
+ if (entry.total.contextSize !== undefined) return entry.total.contextSize;
+ continue;
+ }
+ // In-flight turn: progressive context size from the latest step with usage.
+ const lt = state.live.get(entry.turnId);
+ if (lt !== undefined) {
+ const live = liveTurnContextSize(lt);
+ if (live !== undefined) return live;
+ }
+ }
+ return undefined;
+}
diff --git a/src/core/metrics/types.ts b/src/core/metrics/types.ts
new file mode 100644
index 0000000..84d1904
--- /dev/null
+++ b/src/core/metrics/types.ts
@@ -0,0 +1,97 @@
+import type { StepMetrics, TurnMetrics, Usage } from "@dispatch/wire";
+import type { RenderGroup } from "../chunks";
+
+export type { StepMetrics, TurnMetrics };
+
+/** A step being built from live events (may be incomplete). */
+export interface BuildingStep {
+ readonly stepId: string;
+ readonly usage: Usage | undefined;
+ readonly ttftMs: number | undefined;
+ readonly decodeMs: number | undefined;
+ readonly genTotalMs: number | undefined;
+ readonly complete: boolean;
+}
+
+/** A turn being built from live events (in-flight). */
+export interface LiveTurn {
+ readonly turnId: string;
+ readonly done: boolean;
+ readonly durationMs: number | undefined;
+ readonly doneUsage: Usage | undefined;
+ /**
+ * Context size carried on the turn's `done` event (the turn's FINAL step
+ * `inputTokens + outputTokens` — current context occupancy). `undefined` when
+ * the provider reported no per-step usage; never coerced to `0`.
+ */
+ readonly doneContextSize: number | undefined;
+ readonly stepMap: ReadonlyMap<string, BuildingStep>;
+ readonly stepOrder: readonly string[];
+}
+
+/**
+ * Reducer state for per-turn / per-step token + timing metrics.
+ *
+ * - `live`: in-flight turns keyed by `turnId` in FIRST-SEEN order.
+ * - `durable`: sealed turns keyed by `turnId` in the order they arrived.
+ */
+export interface MetricsState {
+ readonly live: ReadonlyMap<string, LiveTurn>;
+ readonly liveOrder: readonly string[];
+ readonly durable: ReadonlyMap<string, TurnMetrics>;
+ readonly durableOrder: readonly string[];
+}
+
+/** Per-turn placement entry: completed steps so far + optional turn total. */
+export interface TurnMetricsEntry {
+ readonly turnId: string;
+ readonly steps: readonly StepMetrics[];
+ readonly total: TurnMetrics | null;
+}
+
+/** A row in the interleaved transcript: a render group, per-step metrics, or turn metrics. */
+export type MetricsRow =
+ | { readonly kind: "group"; readonly group: RenderGroup }
+ | { readonly kind: "step-metrics"; readonly step: StepMetrics; readonly index: number }
+ | {
+ readonly kind: "turn-metrics";
+ readonly turn: TurnMetrics;
+ /** 1-based turn number (the entry's position in the metrics array + 1). */
+ readonly turnNumber: number;
+ /** Cumulative usage across all finalized turns up to and including this one. */
+ readonly cumulativeUsage: Usage;
+ /**
+ * Usage of the most recent EARLIER finalized turn, or `null` when this is the
+ * first finalized turn. The baseline for cross-turn retention (expected cache).
+ */
+ readonly prevTurnUsage: Usage | null;
+ };
+
+/** Formatted cache hit-rate view: percentage + colour severity + hit flag. */
+export interface CacheRateView {
+ /** Cache hit rate as a 0..100 integer percentage (`cacheReadTokens / inputTokens`). */
+ readonly pct: number;
+ /** Colour severity for a badge (maps to DaisyUI `badge-{level}`). */
+ readonly level: "success" | "warning" | "error";
+ /** Whether any input tokens were served from cache. */
+ readonly isHit: boolean;
+}
+
+/** Formatted per-step view for display. */
+export interface StepMetricsView {
+ readonly label: string;
+ readonly tokensLabel: string;
+ readonly tps: string | null;
+ readonly ttft: string | null;
+ readonly decode: string | null;
+ readonly genTotal: string | null;
+}
+
+/** Formatted per-turn view for display. */
+export interface TurnMetricsView {
+ readonly label: string;
+ readonly tokensLabel: string;
+ readonly breakdown: string;
+ readonly tps: string | null;
+ readonly duration: string | null;
+}
diff --git a/src/core/protocol/index.ts b/src/core/protocol/index.ts
index 25174ea..2c1c290 100644
--- a/src/core/protocol/index.ts
+++ b/src/core/protocol/index.ts
@@ -1,2 +1,9 @@
-export { applyServerMessage, initialState, invoke, subscribe, unsubscribe } from "./reducer";
-export type { ProtocolResult, ProtocolState } from "./types";
+export {
+ applyServerMessage,
+ getSurfaceSpec,
+ initialState,
+ invoke,
+ subscribe,
+ unsubscribe,
+} from "./reducer";
+export type { ProtocolResult, ProtocolState, Subscription } from "./types";
diff --git a/src/core/protocol/reducer.test.ts b/src/core/protocol/reducer.test.ts
index 57e12f2..d42dce7 100644
--- a/src/core/protocol/reducer.test.ts
+++ b/src/core/protocol/reducer.test.ts
@@ -1,151 +1,245 @@
import { describe, expect, it } from "vitest";
-import { applyServerMessage, initialState, invoke, subscribe, unsubscribe } from "./reducer";
+import {
+ applyServerMessage,
+ getSurfaceSpec,
+ initialState,
+ invoke,
+ subscribe,
+ unsubscribe,
+} from "./reducer";
const makeSpec = (id: string, title = id) => ({
- id,
- region: "test",
- title,
- fields: [],
+ id,
+ region: "test",
+ title,
+ fields: [],
});
describe("initialState", () => {
- it("returns empty catalog, no subscriptions, no error", () => {
- const s = initialState();
- expect(s.catalog).toEqual([]);
- expect(s.subscriptions.size).toBe(0);
- expect(s.lastError).toBeNull();
- });
+ it("returns empty catalog, no subscriptions, no error", () => {
+ const s = initialState();
+ expect(s.catalog).toEqual([]);
+ expect(s.subscriptions.size).toBe(0);
+ expect(s.lastError).toBeNull();
+ });
});
describe("applyServerMessage — catalog", () => {
- it("replaces the catalog", () => {
- const s = initialState();
- const catalog = [
- { id: "a", region: "r", title: "A" },
- { id: "b", region: "r", title: "B" },
- ];
- const next = applyServerMessage(s, { type: "catalog", catalog });
- expect(next.catalog).toEqual(catalog);
- });
+ it("replaces the catalog", () => {
+ const s = initialState();
+ const catalog = [
+ { id: "a", region: "r", title: "A" },
+ { id: "b", region: "r", title: "B" },
+ ];
+ const next = applyServerMessage(s, { type: "catalog", catalog });
+ expect(next.catalog).toEqual(catalog);
+ });
});
describe("applyServerMessage — surface", () => {
- it("sets the spec for a subscribed surface", () => {
- let s = initialState();
- const result = subscribe(s, "s1");
- s = result.state;
- const spec = makeSpec("s1", "Surface 1");
- const next = applyServerMessage(s, { type: "surface", spec });
- expect(next.subscriptions.get("s1")).toEqual(spec);
- });
-
- it("ignores a surface message for a non-subscribed surface", () => {
- const s = initialState();
- const spec = makeSpec("unknown");
- const next = applyServerMessage(s, { type: "surface", spec });
- expect(next.subscriptions.has("unknown")).toBe(false);
- });
+ it("sets the spec for a subscribed surface", () => {
+ let s = initialState();
+ s = subscribe(s, "s1").state;
+ const spec = makeSpec("s1", "Surface 1");
+ const next = applyServerMessage(s, { type: "surface", spec });
+ expect(getSurfaceSpec(next, "s1")).toEqual(spec);
+ });
+
+ it("ignores a surface message for a non-subscribed surface", () => {
+ const s = initialState();
+ const spec = makeSpec("unknown");
+ const next = applyServerMessage(s, { type: "surface", spec });
+ expect(next.subscriptions.has("unknown")).toBe(false);
+ });
});
describe("applyServerMessage — update", () => {
- it("replaces spec for a subscribed surface", () => {
- let s = initialState();
- s = subscribe(s, "s1").state;
- s = applyServerMessage(s, { type: "surface", spec: makeSpec("s1", "V1") });
- const next = applyServerMessage(s, {
- type: "update",
- update: { surfaceId: "s1", spec: makeSpec("s1", "V2") },
- });
- expect(next.subscriptions.get("s1")?.title).toBe("V2");
- });
-
- it("ignores an update for a non-subscribed surface", () => {
- const s = initialState();
- const next = applyServerMessage(s, {
- type: "update",
- update: { surfaceId: "nope", spec: makeSpec("nope") },
- });
- expect(next.subscriptions.has("nope")).toBe(false);
- });
+ it("replaces spec for a subscribed surface", () => {
+ let s = initialState();
+ s = subscribe(s, "s1").state;
+ s = applyServerMessage(s, { type: "surface", spec: makeSpec("s1", "V1") });
+ const next = applyServerMessage(s, {
+ type: "update",
+ update: { surfaceId: "s1", spec: makeSpec("s1", "V2") },
+ });
+ expect(getSurfaceSpec(next, "s1")?.title).toBe("V2");
+ });
+
+ it("ignores an update for a non-subscribed surface", () => {
+ const s = initialState();
+ const next = applyServerMessage(s, {
+ type: "update",
+ update: { surfaceId: "nope", spec: makeSpec("nope") },
+ });
+ expect(next.subscriptions.has("nope")).toBe(false);
+ });
});
describe("applyServerMessage — error", () => {
- it("records the error without throwing", () => {
- const s = initialState();
- const err = { type: "error" as const, surfaceId: "s1", message: "boom" };
- const next = applyServerMessage(s, err);
- expect(next.lastError).toEqual(err);
- });
-
- it("records error without surfaceId", () => {
- const s = initialState();
- const err = { type: "error" as const, message: "global boom" };
- const next = applyServerMessage(s, err);
- expect(next.lastError).toEqual(err);
- });
+ it("records the error without throwing", () => {
+ const s = initialState();
+ const err = { type: "error" as const, surfaceId: "s1", message: "boom" };
+ const next = applyServerMessage(s, err);
+ expect(next.lastError).toEqual(err);
+ });
+
+ it("records error without surfaceId", () => {
+ const s = initialState();
+ const err = { type: "error" as const, message: "global boom" };
+ const next = applyServerMessage(s, err);
+ expect(next.lastError).toEqual(err);
+ });
});
describe("subscribe", () => {
- it("emits exactly one subscribe message", () => {
- const s = initialState();
- const result = subscribe(s, "s1");
- expect(result.outgoing).toEqual([{ type: "subscribe", surfaceId: "s1" }]);
- expect(result.outgoing).toHaveLength(1);
- });
-
- it("adds the surface to subscriptions with null spec", () => {
- const s = initialState();
- const result = subscribe(s, "s1");
- expect(result.state.subscriptions.get("s1")).toBeNull();
- });
-
- it("is idempotent — second subscribe is a no-op", () => {
- let s = initialState();
- s = subscribe(s, "s1").state;
- const result = subscribe(s, "s1");
- expect(result.outgoing).toEqual([]);
- expect(result.state).toBe(s);
- });
+ it("emits exactly one subscribe message (global, no conversationId)", () => {
+ const s = initialState();
+ const result = subscribe(s, "s1");
+ expect(result.outgoing).toEqual([{ type: "subscribe", surfaceId: "s1" }]);
+ expect(result.outgoing).toHaveLength(1);
+ });
+
+ it("adds the surface to subscriptions with null spec", () => {
+ const s = initialState();
+ const result = subscribe(s, "s1");
+ expect(result.state.subscriptions.get("s1")).toEqual({
+ conversationId: undefined,
+ spec: null,
+ });
+ expect(getSurfaceSpec(result.state, "s1")).toBeNull();
+ });
+
+ it("is idempotent — second subscribe with the same scope is a no-op", () => {
+ let s = initialState();
+ s = subscribe(s, "s1").state;
+ const result = subscribe(s, "s1");
+ expect(result.outgoing).toEqual([]);
+ expect(result.state).toBe(s);
+ });
+});
+
+describe("subscribe — conversation-scoped", () => {
+ it("includes conversationId in the subscribe message", () => {
+ const s = initialState();
+ const result = subscribe(s, "cache-warming", "conv-A");
+ expect(result.outgoing).toEqual([
+ { type: "subscribe", surfaceId: "cache-warming", conversationId: "conv-A" },
+ ]);
+ expect(result.state.subscriptions.get("cache-warming")?.conversationId).toBe("conv-A");
+ });
+
+ it("re-scopes on conversation switch: unsubscribe old pair then subscribe new", () => {
+ let s = initialState();
+ s = subscribe(s, "cw", "conv-A").state;
+ s = applyServerMessage(s, {
+ type: "surface",
+ spec: makeSpec("cw", "A-spec"),
+ conversationId: "conv-A",
+ });
+ const result = subscribe(s, "cw", "conv-B");
+ expect(result.outgoing).toEqual([
+ { type: "unsubscribe", surfaceId: "cw", conversationId: "conv-A" },
+ { type: "subscribe", surfaceId: "cw", conversationId: "conv-B" },
+ ]);
+ // previous spec retained until the new one arrives (no flicker)
+ expect(getSurfaceSpec(result.state, "cw")?.title).toBe("A-spec");
+ expect(result.state.subscriptions.get("cw")?.conversationId).toBe("conv-B");
+ });
+
+ it("drops a stale update echoing the previous conversationId", () => {
+ let s = initialState();
+ s = subscribe(s, "cw", "conv-A").state;
+ s = subscribe(s, "cw", "conv-B").state; // re-scoped to B
+ const next = applyServerMessage(s, {
+ type: "update",
+ update: { surfaceId: "cw", spec: makeSpec("cw", "STALE-A"), conversationId: "conv-A" },
+ });
+ expect(getSurfaceSpec(next, "cw")).toBeNull(); // stale ignored, no spec yet for B
+ });
+
+ it("accepts an update echoing the current conversationId", () => {
+ let s = initialState();
+ s = subscribe(s, "cw", "conv-B").state;
+ const next = applyServerMessage(s, {
+ type: "update",
+ update: { surfaceId: "cw", spec: makeSpec("cw", "B-spec"), conversationId: "conv-B" },
+ });
+ expect(getSurfaceSpec(next, "cw")?.title).toBe("B-spec");
+ });
+
+ it("accepts a global (no-echo) surface message even when subscribed with a conversationId", () => {
+ // loaded-extensions is global: server ignores our conversationId and echoes none.
+ let s = initialState();
+ s = subscribe(s, "loaded-extensions", "conv-A").state;
+ const next = applyServerMessage(s, {
+ type: "surface",
+ spec: makeSpec("loaded-extensions", "Ext"),
+ });
+ expect(getSurfaceSpec(next, "loaded-extensions")?.title).toBe("Ext");
+ });
});
describe("unsubscribe", () => {
- it("emits unsubscribe and drops the spec", () => {
- let s = initialState();
- s = subscribe(s, "s1").state;
- s = applyServerMessage(s, { type: "surface", spec: makeSpec("s1") });
- const result = unsubscribe(s, "s1");
- expect(result.outgoing).toEqual([{ type: "unsubscribe", surfaceId: "s1" }]);
- expect(result.state.subscriptions.has("s1")).toBe(false);
- });
-
- it("is a no-op if not subscribed", () => {
- const s = initialState();
- const result = unsubscribe(s, "nope");
- expect(result.outgoing).toEqual([]);
- expect(result.state).toBe(s);
- });
+ it("emits unsubscribe and drops the spec", () => {
+ let s = initialState();
+ s = subscribe(s, "s1").state;
+ s = applyServerMessage(s, { type: "surface", spec: makeSpec("s1") });
+ const result = unsubscribe(s, "s1");
+ expect(result.outgoing).toEqual([{ type: "unsubscribe", surfaceId: "s1" }]);
+ expect(result.state.subscriptions.has("s1")).toBe(false);
+ });
+
+ it("includes conversationId for a scoped subscription", () => {
+ let s = initialState();
+ s = subscribe(s, "cw", "conv-A").state;
+ const result = unsubscribe(s, "cw");
+ expect(result.outgoing).toEqual([
+ { type: "unsubscribe", surfaceId: "cw", conversationId: "conv-A" },
+ ]);
+ });
+
+ it("is a no-op if not subscribed", () => {
+ const s = initialState();
+ const result = unsubscribe(s, "nope");
+ expect(result.outgoing).toEqual([]);
+ expect(result.state).toBe(s);
+ });
});
describe("invoke", () => {
- it("emits the correct InvokeMessage", () => {
- const s = initialState();
- const result = invoke(s, "s1", "toggle", true);
- expect(result.outgoing).toEqual([
- { type: "invoke", surfaceId: "s1", actionId: "toggle", payload: true },
- ]);
- });
-
- it("omits payload when not provided", () => {
- const s = initialState();
- const result = invoke(s, "s1", "click");
- expect(result.outgoing).toEqual([
- { type: "invoke", surfaceId: "s1", actionId: "click", payload: undefined },
- ]);
- });
-
- it("does not mutate state", () => {
- const s = initialState();
- const result = invoke(s, "s1", "a1");
- expect(result.state).toBe(s);
- });
+ it("emits the correct InvokeMessage", () => {
+ const s = initialState();
+ const result = invoke(s, "s1", "toggle", true);
+ expect(result.outgoing).toEqual([
+ { type: "invoke", surfaceId: "s1", actionId: "toggle", payload: true },
+ ]);
+ });
+
+ it("omits payload when not provided", () => {
+ const s = initialState();
+ const result = invoke(s, "s1", "click");
+ expect(result.outgoing).toEqual([
+ { type: "invoke", surfaceId: "s1", actionId: "click", payload: undefined },
+ ]);
+ });
+
+ it("includes conversationId when provided", () => {
+ const s = initialState();
+ const result = invoke(s, "cw", "cache-warming/set-interval", 120, "conv-A");
+ expect(result.outgoing).toEqual([
+ {
+ type: "invoke",
+ surfaceId: "cw",
+ actionId: "cache-warming/set-interval",
+ payload: 120,
+ conversationId: "conv-A",
+ },
+ ]);
+ });
+
+ it("does not mutate state", () => {
+ const s = initialState();
+ const result = invoke(s, "s1", "a1");
+ expect(result.state).toBe(s);
+ });
});
diff --git a/src/core/protocol/reducer.ts b/src/core/protocol/reducer.ts
index 992a918..976eb88 100644
--- a/src/core/protocol/reducer.ts
+++ b/src/core/protocol/reducer.ts
@@ -1,82 +1,143 @@
import type {
- InvokeMessage,
- SubscribeMessage,
- SurfaceServerMessage,
- UnsubscribeMessage,
+ InvokeMessage,
+ SubscribeMessage,
+ SurfaceServerMessage,
+ SurfaceSpec,
+ UnsubscribeMessage,
} from "@dispatch/ui-contract";
import type { ProtocolResult, ProtocolState } from "./types";
/** The initial protocol state: empty catalog, no subscriptions, no error. */
export function initialState(): ProtocolState {
- return {
- catalog: [],
- subscriptions: new Map(),
- lastError: null,
- };
+ return {
+ catalog: [],
+ subscriptions: new Map(),
+ lastError: null,
+ };
+}
+
+// ── Message builders (respect exactOptionalPropertyTypes: omit `conversationId`
+// entirely for a global subscription rather than setting it to `undefined`). ──
+
+function subMsg(surfaceId: string, conversationId: string | undefined): SubscribeMessage {
+ return conversationId === undefined
+ ? { type: "subscribe", surfaceId }
+ : { type: "subscribe", surfaceId, conversationId };
+}
+
+function unsubMsg(surfaceId: string, conversationId: string | undefined): UnsubscribeMessage {
+ return conversationId === undefined
+ ? { type: "unsubscribe", surfaceId }
+ : { type: "unsubscribe", surfaceId, conversationId };
+}
+
+/**
+ * Is an inbound spec/update (which echoes `echoedId`) current for the
+ * subscription whose desired scope is `desiredId`? A scoped surface echoes its
+ * conversationId, so it must match the one we last subscribed with; a GLOBAL
+ * surface echoes nothing (`undefined`) and is always current.
+ */
+function isCurrent(desiredId: string | undefined, echoedId: string | undefined): boolean {
+ return echoedId === undefined || echoedId === desiredId;
}
/** Fold an inbound server message into the next protocol state. */
export function applyServerMessage(state: ProtocolState, msg: SurfaceServerMessage): ProtocolState {
- switch (msg.type) {
- case "catalog":
- return { ...state, catalog: msg.catalog };
+ switch (msg.type) {
+ case "catalog":
+ return { ...state, catalog: msg.catalog };
- case "surface": {
- const surfaceId = msg.spec.id;
- if (!state.subscriptions.has(surfaceId)) return state;
- const subs = new Map(state.subscriptions);
- subs.set(surfaceId, msg.spec);
- return { ...state, subscriptions: subs };
- }
+ case "surface": {
+ const sub = state.subscriptions.get(msg.spec.id);
+ if (sub === undefined) return state;
+ if (!isCurrent(sub.conversationId, msg.conversationId)) return state;
+ const subs = new Map(state.subscriptions);
+ subs.set(msg.spec.id, { conversationId: sub.conversationId, spec: msg.spec });
+ return { ...state, subscriptions: subs };
+ }
- case "update": {
- const surfaceId = msg.update.surfaceId;
- if (!state.subscriptions.has(surfaceId)) return state;
- const subs = new Map(state.subscriptions);
- subs.set(surfaceId, msg.update.spec);
- return { ...state, subscriptions: subs };
- }
+ case "update": {
+ const { surfaceId, spec, conversationId } = msg.update;
+ const sub = state.subscriptions.get(surfaceId);
+ if (sub === undefined) return state;
+ if (!isCurrent(sub.conversationId, conversationId)) return state;
+ const subs = new Map(state.subscriptions);
+ subs.set(surfaceId, { conversationId: sub.conversationId, spec });
+ return { ...state, subscriptions: subs };
+ }
- case "error":
- return { ...state, lastError: msg };
- }
+ case "error":
+ return { ...state, lastError: msg };
+ }
}
/**
- * Subscribe to a surface. Idempotent: if already subscribed, returns the same
- * state with no outgoing message.
+ * Subscribe to a surface for a given conversation (omit `conversationId` for a
+ * GLOBAL surface / when no conversation is focused).
+ *
+ * - Not yet subscribed → emits one `subscribe`.
+ * - Already subscribed with the SAME scope → idempotent no-op.
+ * - Already subscribed with a DIFFERENT conversation (a re-scope on conversation
+ * switch) → emits `unsubscribe` for the old pair then `subscribe` for the new
+ * one, retaining the previous spec until the new one arrives (no flicker).
*/
-export function subscribe(state: ProtocolState, surfaceId: string): ProtocolResult {
- if (state.subscriptions.has(surfaceId)) {
- return { state, outgoing: [] };
- }
- const subs = new Map(state.subscriptions);
- subs.set(surfaceId, null);
- const outgoing: SubscribeMessage = { type: "subscribe", surfaceId };
- return { state: { ...state, subscriptions: subs }, outgoing: [outgoing] };
+export function subscribe(
+ state: ProtocolState,
+ surfaceId: string,
+ conversationId?: string,
+): ProtocolResult {
+ const existing = state.subscriptions.get(surfaceId);
+ if (existing !== undefined && existing.conversationId === conversationId) {
+ return { state, outgoing: [] };
+ }
+ const subs = new Map(state.subscriptions);
+ const outgoing: (SubscribeMessage | UnsubscribeMessage)[] = [];
+ const priorSpec: SurfaceSpec | null = existing?.spec ?? null;
+ if (existing !== undefined) {
+ outgoing.push(unsubMsg(surfaceId, existing.conversationId));
+ }
+ subs.set(surfaceId, { conversationId, spec: priorSpec });
+ outgoing.push(subMsg(surfaceId, conversationId));
+ return { state: { ...state, subscriptions: subs }, outgoing };
}
/**
- * Unsubscribe from a surface. Drops the local spec and emits one unsubscribe.
- * If not subscribed, returns the same state with no outgoing.
+ * Unsubscribe from a surface. Drops the local subscription and emits one
+ * `unsubscribe` (for the conversation pair it was subscribed under). No-op if
+ * not subscribed.
*/
export function unsubscribe(state: ProtocolState, surfaceId: string): ProtocolResult {
- if (!state.subscriptions.has(surfaceId)) {
- return { state, outgoing: [] };
- }
- const subs = new Map(state.subscriptions);
- subs.delete(surfaceId);
- const outgoing: UnsubscribeMessage = { type: "unsubscribe", surfaceId };
- return { state: { ...state, subscriptions: subs }, outgoing: [outgoing] };
+ const existing = state.subscriptions.get(surfaceId);
+ if (existing === undefined) {
+ return { state, outgoing: [] };
+ }
+ const subs = new Map(state.subscriptions);
+ subs.delete(surfaceId);
+ return {
+ state: { ...state, subscriptions: subs },
+ outgoing: [unsubMsg(surfaceId, existing.conversationId)],
+ };
}
-/** Invoke a field's action on a surface. Emits an InvokeMessage; no state change. */
+/**
+ * Invoke a field's action on a surface. Emits an InvokeMessage (carrying
+ * `conversationId` for a scoped surface); no state change.
+ */
export function invoke(
- state: ProtocolState,
- surfaceId: string,
- actionId: string,
- payload?: unknown,
+ state: ProtocolState,
+ surfaceId: string,
+ actionId: string,
+ payload?: unknown,
+ conversationId?: string,
): ProtocolResult {
- const outgoing: InvokeMessage = { type: "invoke", surfaceId, actionId, payload };
- return { state, outgoing: [outgoing] };
+ const outgoing: InvokeMessage =
+ conversationId === undefined
+ ? { type: "invoke", surfaceId, actionId, payload }
+ : { type: "invoke", surfaceId, actionId, payload, conversationId };
+ return { state, outgoing: [outgoing] };
+}
+
+/** The current spec for a subscribed surface, or `null` if absent/unsubscribed. */
+export function getSurfaceSpec(state: ProtocolState, surfaceId: string): SurfaceSpec | null {
+ return state.subscriptions.get(surfaceId)?.spec ?? null;
}
diff --git a/src/core/protocol/types.ts b/src/core/protocol/types.ts
index effec0d..6debb1d 100644
--- a/src/core/protocol/types.ts
+++ b/src/core/protocol/types.ts
@@ -1,22 +1,37 @@
import type {
- SurfaceCatalog,
- SurfaceClientMessage,
- SurfaceErrorMessage,
- SurfaceSpec,
+ SurfaceCatalog,
+ SurfaceClientMessage,
+ SurfaceErrorMessage,
+ SurfaceSpec,
} from "@dispatch/ui-contract";
+/**
+ * One surface subscription's local state.
+ *
+ * `conversationId` is the conversation we last subscribed this surface WITH
+ * (`undefined` = subscribed globally, no conversation in focus). It is the
+ * "desired" scope: an inbound `surface`/`update` that echoes a DIFFERENT
+ * conversation is stale (we have since re-scoped) and is dropped. A GLOBAL
+ * surface ignores the id server-side and echoes none — that (`undefined` echo)
+ * is always accepted. `spec` is `null` until the first `surface` arrives.
+ */
+export interface Subscription {
+ readonly conversationId: string | undefined;
+ readonly spec: SurfaceSpec | null;
+}
+
/** The client-side view of the surface protocol state. */
export interface ProtocolState {
- /** The latest catalog received from the server (empty until first CatalogMessage). */
- readonly catalog: SurfaceCatalog;
- /** Surfaces the client intends to be subscribed to; null = subscribed but no spec yet. */
- readonly subscriptions: ReadonlyMap<string, SurfaceSpec | null>;
- /** The last error received from the server, if any. */
- readonly lastError: SurfaceErrorMessage | null;
+ /** The latest catalog received from the server (empty until first CatalogMessage). */
+ readonly catalog: SurfaceCatalog;
+ /** Surfaces the client intends to be subscribed to, keyed by surfaceId. */
+ readonly subscriptions: ReadonlyMap<string, Subscription>;
+ /** The last error received from the server, if any. */
+ readonly lastError: SurfaceErrorMessage | null;
}
/** A state transition result: the next state plus any outgoing messages to send. */
export interface ProtocolResult {
- readonly state: ProtocolState;
- readonly outgoing: readonly SurfaceClientMessage[];
+ readonly state: ProtocolState;
+ readonly outgoing: readonly SurfaceClientMessage[];
}
diff --git a/src/core/wire/conformance.test.ts b/src/core/wire/conformance.test.ts
index c0f276f..0d955d5 100644
--- a/src/core/wire/conformance.test.ts
+++ b/src/core/wire/conformance.test.ts
@@ -1,181 +1,280 @@
import type { ChatSendMessage, ConversationHistoryResponse } from "@dispatch/transport-contract";
-import type { AgentEvent, StoredChunk } from "@dispatch/wire";
+import type { AgentEvent, StepId, StoredChunk } from "@dispatch/wire";
import { describe, expect, it } from "vitest";
import {
- assertAgentEventExhaustive,
- assertChunkExhaustive,
- assertWsClientMessageExhaustive,
- assertWsServerMessageExhaustive,
+ assertAgentEventExhaustive,
+ assertChunkExhaustive,
+ assertWsClientMessageExhaustive,
+ assertWsServerMessageExhaustive,
} from "./conformance";
describe("StoredChunk round-trips JSON", () => {
- it("preserves shape through JSON serialize/deserialize", () => {
- const original: StoredChunk = {
- seq: 42,
- role: "assistant",
- chunk: { type: "text", text: "hello" },
- };
- const roundTripped: StoredChunk = JSON.parse(JSON.stringify(original)) as StoredChunk;
- expect(roundTripped).toEqual(original);
- expect(roundTripped.seq).toBe(42);
- expect(roundTripped.role).toBe("assistant");
- expect(roundTripped.chunk.type).toBe("text");
- });
+ it("preserves shape through JSON serialize/deserialize", () => {
+ const original: StoredChunk = {
+ seq: 42,
+ role: "assistant",
+ chunk: { type: "text", text: "hello" },
+ };
+ const roundTripped: StoredChunk = JSON.parse(JSON.stringify(original)) as StoredChunk;
+ expect(roundTripped).toEqual(original);
+ expect(roundTripped.seq).toBe(42);
+ expect(roundTripped.role).toBe("assistant");
+ expect(roundTripped.chunk.type).toBe("text");
+ });
});
describe("classifies every AgentEvent type", () => {
- const samples: AgentEvent[] = [
- { type: "status", conversationId: "c1", status: "idle" },
- { type: "turn-start", conversationId: "c1", turnId: "t1" },
- { type: "text-delta", conversationId: "c1", turnId: "t1", delta: "hi" },
- { type: "reasoning-delta", conversationId: "c1", turnId: "t1", delta: "thinking" },
- {
- type: "tool-call",
- conversationId: "c1",
- turnId: "t1",
- toolCallId: "tc1",
- toolName: "read",
- input: {},
- },
- {
- type: "tool-result",
- conversationId: "c1",
- turnId: "t1",
- toolCallId: "tc1",
- toolName: "read",
- content: "ok",
- isError: false,
- },
- {
- type: "tool-output",
- conversationId: "c1",
- turnId: "t1",
- toolCallId: "tc1",
- data: "out",
- stream: "stdout",
- },
- {
- type: "usage",
- conversationId: "c1",
- turnId: "t1",
- usage: { inputTokens: 10, outputTokens: 20 },
- },
- { type: "error", conversationId: "c1", turnId: "t1", message: "oops" },
- { type: "done", conversationId: "c1", turnId: "t1", reason: "complete" },
- { type: "turn-sealed", conversationId: "c1", turnId: "t1" },
- ];
+ const samples: AgentEvent[] = [
+ { type: "status", conversationId: "c1", status: "idle" },
+ { type: "turn-start", conversationId: "c1", turnId: "t1" },
+ { type: "user-message", conversationId: "c1", turnId: "t1", text: "hi" },
+ { type: "text-delta", conversationId: "c1", turnId: "t1", delta: "hi" },
+ { type: "reasoning-delta", conversationId: "c1", turnId: "t1", delta: "thinking" },
+ {
+ type: "tool-call",
+ conversationId: "c1",
+ turnId: "t1",
+ toolCallId: "tc1",
+ toolName: "read",
+ input: {},
+ stepId: "t1#0" as StepId,
+ },
+ {
+ type: "tool-result",
+ conversationId: "c1",
+ turnId: "t1",
+ toolCallId: "tc1",
+ toolName: "read",
+ content: "ok",
+ isError: false,
+ stepId: "t1#0" as StepId,
+ },
+ {
+ type: "tool-output",
+ conversationId: "c1",
+ turnId: "t1",
+ toolCallId: "tc1",
+ data: "out",
+ stream: "stdout",
+ },
+ {
+ type: "usage",
+ conversationId: "c1",
+ turnId: "t1",
+ usage: { inputTokens: 10, outputTokens: 20 },
+ },
+ {
+ type: "step-complete",
+ conversationId: "c1",
+ turnId: "t1",
+ stepId: "t1#0" as StepId,
+ ttftMs: 300,
+ decodeMs: 700,
+ genTotalMs: 1000,
+ },
+ { type: "error", conversationId: "c1", turnId: "t1", message: "oops" },
+ { type: "done", conversationId: "c1", turnId: "t1", reason: "complete" },
+ { type: "turn-sealed", conversationId: "c1", turnId: "t1" },
+ { type: "steering", conversationId: "c1", turnId: "t1", text: "steer mid-turn" },
+ {
+ type: "provider-retry",
+ conversationId: "c1",
+ turnId: "t1",
+ attempt: 0,
+ delayMs: 5000,
+ message: "HTTP 429: overloaded",
+ code: "429",
+ },
+ ];
- it("returns a stable label for every AgentEvent.type variant", () => {
- const labels = samples.map(assertAgentEventExhaustive);
- expect(labels).toEqual([
- "status",
- "turn-start",
- "text-delta",
- "reasoning-delta",
- "tool-call",
- "tool-result",
- "tool-output",
- "usage",
- "error",
- "done",
- "turn-sealed",
- ]);
- });
+ it("returns a stable label for every AgentEvent.type variant", () => {
+ const labels = samples.map(assertAgentEventExhaustive);
+ expect(labels).toEqual([
+ "status",
+ "turn-start",
+ "user-message",
+ "text-delta",
+ "reasoning-delta",
+ "tool-call",
+ "tool-result",
+ "tool-output",
+ "usage",
+ "step-complete",
+ "error",
+ "done",
+ "turn-sealed",
+ "steering",
+ "provider-retry",
+ ]);
+ });
- it("covers all 11 AgentEvent variants", () => {
- expect(samples).toHaveLength(11);
- });
+ it("covers all 15 AgentEvent variants", () => {
+ expect(samples).toHaveLength(15);
+ });
});
describe("classifies every Chunk type", () => {
- it("returns a stable label for each Chunk.type variant", () => {
- const chunks = [
- { type: "text" as const, text: "a" },
- { type: "thinking" as const, text: "b" },
- { type: "tool-call" as const, toolCallId: "tc", toolName: "n", input: null },
- {
- type: "tool-result" as const,
- toolCallId: "tc",
- toolName: "n",
- content: "c",
- isError: false,
- },
- { type: "error" as const, message: "e" },
- { type: "system" as const, text: "s" },
- ];
- const labels = chunks.map(assertChunkExhaustive);
- expect(labels).toEqual(["text", "thinking", "tool-call", "tool-result", "error", "system"]);
- });
+ it("returns a stable label for each Chunk.type variant", () => {
+ const chunks = [
+ { type: "text" as const, text: "a" },
+ { type: "thinking" as const, text: "b" },
+ { type: "tool-call" as const, toolCallId: "tc", toolName: "n", input: null },
+ {
+ type: "tool-result" as const,
+ toolCallId: "tc",
+ toolName: "n",
+ content: "c",
+ isError: false,
+ },
+ { type: "error" as const, message: "e" },
+ { type: "system" as const, text: "s" },
+ { type: "image" as const, url: "data:image/png;base64,AAAA", mimeType: "image/png" },
+ ];
+ const labels = chunks.map(assertChunkExhaustive);
+ expect(labels).toEqual([
+ "text",
+ "thinking",
+ "tool-call",
+ "tool-result",
+ "error",
+ "system",
+ "image",
+ ]);
+ });
+
+ it("covers all 7 Chunk variants", () => {
+ // Keeps the exhaustive guard honest: a new Chunk.type variant must be added
+ // both here and to `assertChunkExhaustive` or the `satisfies never` errors.
+ expect([
+ "text",
+ "thinking",
+ "tool-call",
+ "tool-result",
+ "error",
+ "system",
+ "image",
+ ] as const).toHaveLength(7);
+ });
});
describe("classifies every WsServerMessage type", () => {
- it("returns a stable label for each variant", () => {
- const msgs = [
- { type: "catalog" as const, catalog: [] },
- { type: "surface" as const, spec: { id: "s", region: "r", title: "S", fields: [] } },
- {
- type: "update" as const,
- update: { surfaceId: "s", spec: { id: "s", region: "r", title: "S", fields: [] } },
- },
- { type: "error" as const, message: "e" },
- {
- type: "chat.delta" as const,
- event: { type: "done" as const, conversationId: "c", turnId: "t", reason: "r" },
- },
- { type: "chat.error" as const, message: "e" },
- ];
- const labels = msgs.map(assertWsServerMessageExhaustive);
- expect(labels).toEqual(["catalog", "surface", "update", "error", "chat.delta", "chat.error"]);
- });
+ it("returns a stable label for each variant", () => {
+ const msgs = [
+ { type: "catalog" as const, catalog: [] },
+ { type: "surface" as const, spec: { id: "s", region: "r", title: "S", fields: [] } },
+ {
+ type: "update" as const,
+ update: { surfaceId: "s", spec: { id: "s", region: "r", title: "S", fields: [] } },
+ },
+ { type: "error" as const, message: "e" },
+ {
+ type: "chat.delta" as const,
+ event: { type: "done" as const, conversationId: "c", turnId: "t", reason: "r" },
+ },
+ { type: "chat.error" as const, message: "e" },
+ { type: "conversation.open" as const, conversationId: "c1", workspaceId: "w1" },
+ {
+ type: "conversation.statusChanged" as const,
+ conversationId: "c1",
+ status: "active" as const,
+ workspaceId: "w1",
+ },
+ {
+ type: "conversation.compacted" as const,
+ conversationId: "c1",
+ newConversationId: "c2",
+ messagesSummarized: 10,
+ messagesKept: 5,
+ },
+ ];
+ const labels = msgs.map(assertWsServerMessageExhaustive);
+ expect(labels).toEqual([
+ "catalog",
+ "surface",
+ "update",
+ "error",
+ "chat.delta",
+ "chat.error",
+ "conversation.open",
+ "conversation.statusChanged",
+ "conversation.compacted",
+ ]);
+ });
});
describe("classifies every WsClientMessage type", () => {
- it("returns a stable label for each variant", () => {
- const msgs = [
- { type: "subscribe" as const, surfaceId: "s" },
- { type: "unsubscribe" as const, surfaceId: "s" },
- { type: "invoke" as const, surfaceId: "s", actionId: "a" },
- { type: "chat.send" as const, message: "hi" },
- ];
- const labels = msgs.map(assertWsClientMessageExhaustive);
- expect(labels).toEqual(["subscribe", "unsubscribe", "invoke", "chat.send"]);
- });
+ it("returns a stable label for each variant", () => {
+ const msgs = [
+ { type: "subscribe" as const, surfaceId: "s" },
+ { type: "unsubscribe" as const, surfaceId: "s" },
+ { type: "invoke" as const, surfaceId: "s", actionId: "a" },
+ { type: "chat.send" as const, message: "hi" },
+ { type: "chat.subscribe" as const, conversationId: "c1" },
+ { type: "chat.unsubscribe" as const, conversationId: "c1" },
+ { type: "chat.queue" as const, conversationId: "c1", text: "steer" },
+ ];
+ const labels = msgs.map(assertWsClientMessageExhaustive);
+ expect(labels).toEqual([
+ "subscribe",
+ "unsubscribe",
+ "invoke",
+ "chat.send",
+ "chat.subscribe",
+ "chat.unsubscribe",
+ "chat.queue",
+ ]);
+ });
});
describe("ChatSendMessage shape is constructible", () => {
- it("constructs a minimal ChatSendMessage", () => {
- const msg: ChatSendMessage = { type: "chat.send", message: "hello" };
- expect(msg.type).toBe("chat.send");
- expect(msg.message).toBe("hello");
- });
+ it("constructs a minimal ChatSendMessage", () => {
+ const msg: ChatSendMessage = { type: "chat.send", message: "hello" };
+ expect(msg.type).toBe("chat.send");
+ expect(msg.message).toBe("hello");
+ });
+
+ it("constructs a full ChatSendMessage", () => {
+ const msg: ChatSendMessage = {
+ type: "chat.send",
+ conversationId: "c1",
+ message: "hello",
+ model: "default/gpt-4",
+ cwd: "/tmp",
+ };
+ expect(msg.conversationId).toBe("c1");
+ expect(msg.model).toBe("default/gpt-4");
+ expect(msg.cwd).toBe("/tmp");
+ });
- it("constructs a full ChatSendMessage", () => {
- const msg: ChatSendMessage = {
- type: "chat.send",
- conversationId: "c1",
- message: "hello",
- model: "default/gpt-4",
- cwd: "/tmp",
- };
- expect(msg.conversationId).toBe("c1");
- expect(msg.model).toBe("default/gpt-4");
- expect(msg.cwd).toBe("/tmp");
- });
+ it("constructs a ChatSendMessage with pasted images", () => {
+ const msg: ChatSendMessage = {
+ type: "chat.send",
+ conversationId: "c1",
+ message: "what's in this image?",
+ images: [
+ { url: "data:image/png;base64,AAAA", mimeType: "image/png" },
+ { url: "https://example.com/cat.jpg" },
+ ],
+ };
+ expect(msg.images).toHaveLength(2);
+ expect(msg.images?.[0]?.mimeType).toBe("image/png");
+ expect(msg.images?.[1]?.mimeType).toBeUndefined();
+ });
});
describe("ConversationHistoryResponse shape is constructible", () => {
- it("constructs a response with chunks", () => {
- const resp: ConversationHistoryResponse = {
- chunks: [{ seq: 1, role: "user", chunk: { type: "text", text: "hi" } }],
- latestSeq: 1,
- };
- expect(resp.chunks).toHaveLength(1);
- expect(resp.latestSeq).toBe(1);
- });
+ it("constructs a response with chunks", () => {
+ const resp: ConversationHistoryResponse = {
+ chunks: [{ seq: 1, role: "user", chunk: { type: "text", text: "hi" } }],
+ latestSeq: 1,
+ };
+ expect(resp.chunks).toHaveLength(1);
+ expect(resp.latestSeq).toBe(1);
+ });
- it("constructs an empty (caught-up) response", () => {
- const resp: ConversationHistoryResponse = { chunks: [], latestSeq: 5 };
- expect(resp.chunks).toHaveLength(0);
- expect(resp.latestSeq).toBe(5);
- });
+ it("constructs an empty (caught-up) response", () => {
+ const resp: ConversationHistoryResponse = { chunks: [], latestSeq: 5 };
+ expect(resp.chunks).toHaveLength(0);
+ expect(resp.latestSeq).toBe(5);
+ });
});
diff --git a/src/core/wire/conformance.ts b/src/core/wire/conformance.ts
index 5d75a60..bfa67dc 100644
--- a/src/core/wire/conformance.ts
+++ b/src/core/wire/conformance.ts
@@ -7,54 +7,64 @@ import type { AgentEvent, Chunk } from "@dispatch/wire";
* default branch becomes reachable → TypeScript error at build time.
*/
export function assertAgentEventExhaustive(event: AgentEvent): string {
- switch (event.type) {
- case "status":
- return "status";
- case "turn-start":
- return "turn-start";
- case "text-delta":
- return "text-delta";
- case "reasoning-delta":
- return "reasoning-delta";
- case "tool-call":
- return "tool-call";
- case "tool-result":
- return "tool-result";
- case "tool-output":
- return "tool-output";
- case "usage":
- return "usage";
- case "error":
- return "error";
- case "done":
- return "done";
- case "turn-sealed":
- return "turn-sealed";
- default:
- return event satisfies never;
- }
+ switch (event.type) {
+ case "status":
+ return "status";
+ case "turn-start":
+ return "turn-start";
+ case "user-message":
+ return "user-message";
+ case "text-delta":
+ return "text-delta";
+ case "reasoning-delta":
+ return "reasoning-delta";
+ case "tool-call":
+ return "tool-call";
+ case "tool-result":
+ return "tool-result";
+ case "tool-output":
+ return "tool-output";
+ case "usage":
+ return "usage";
+ case "error":
+ return "error";
+ case "done":
+ return "done";
+ case "turn-sealed":
+ return "turn-sealed";
+ case "step-complete":
+ return "step-complete";
+ case "steering":
+ return "steering";
+ case "provider-retry":
+ return "provider-retry";
+ default:
+ return event satisfies never;
+ }
}
/**
* Compile-time exhaustiveness guard for `Chunk.type`.
*/
export function assertChunkExhaustive(chunk: Chunk): string {
- switch (chunk.type) {
- case "text":
- return "text";
- case "thinking":
- return "thinking";
- case "tool-call":
- return "tool-call";
- case "tool-result":
- return "tool-result";
- case "error":
- return "error";
- case "system":
- return "system";
- default:
- return chunk satisfies never;
- }
+ switch (chunk.type) {
+ case "text":
+ return "text";
+ case "thinking":
+ return "thinking";
+ case "tool-call":
+ return "tool-call";
+ case "tool-result":
+ return "tool-result";
+ case "error":
+ return "error";
+ case "system":
+ return "system";
+ case "image":
+ return "image";
+ default:
+ return chunk satisfies never;
+ }
}
/**
@@ -62,22 +72,28 @@ export function assertChunkExhaustive(chunk: Chunk): string {
* Covers both surface ops and chat ops.
*/
export function assertWsServerMessageExhaustive(msg: WsServerMessage): string {
- switch (msg.type) {
- case "catalog":
- return "catalog";
- case "surface":
- return "surface";
- case "update":
- return "update";
- case "error":
- return "error";
- case "chat.delta":
- return "chat.delta";
- case "chat.error":
- return "chat.error";
- default:
- return msg satisfies never;
- }
+ switch (msg.type) {
+ case "catalog":
+ return "catalog";
+ case "surface":
+ return "surface";
+ case "update":
+ return "update";
+ case "error":
+ return "error";
+ case "chat.delta":
+ return "chat.delta";
+ case "chat.error":
+ return "chat.error";
+ case "conversation.open":
+ return "conversation.open";
+ case "conversation.statusChanged":
+ return "conversation.statusChanged";
+ case "conversation.compacted":
+ return "conversation.compacted";
+ default:
+ return msg satisfies never;
+ }
}
/**
@@ -85,16 +101,22 @@ export function assertWsServerMessageExhaustive(msg: WsServerMessage): string {
* Covers both surface ops and chat ops.
*/
export function assertWsClientMessageExhaustive(msg: WsClientMessage): string {
- switch (msg.type) {
- case "subscribe":
- return "subscribe";
- case "unsubscribe":
- return "unsubscribe";
- case "invoke":
- return "invoke";
- case "chat.send":
- return "chat.send";
- default:
- return msg satisfies never;
- }
+ switch (msg.type) {
+ case "subscribe":
+ return "subscribe";
+ case "unsubscribe":
+ return "unsubscribe";
+ case "invoke":
+ return "invoke";
+ case "chat.send":
+ return "chat.send";
+ case "chat.subscribe":
+ return "chat.subscribe";
+ case "chat.unsubscribe":
+ return "chat.unsubscribe";
+ case "chat.queue":
+ return "chat.queue";
+ default:
+ return msg satisfies never;
+ }
}
diff --git a/src/core/wire/index.ts b/src/core/wire/index.ts
index ae6b3e6..d4215cf 100644
--- a/src/core/wire/index.ts
+++ b/src/core/wire/index.ts
@@ -1,6 +1,6 @@
export {
- assertAgentEventExhaustive,
- assertChunkExhaustive,
- assertWsClientMessageExhaustive,
- assertWsServerMessageExhaustive,
+ assertAgentEventExhaustive,
+ assertChunkExhaustive,
+ assertWsClientMessageExhaustive,
+ assertWsServerMessageExhaustive,
} from "./conformance";
diff --git a/src/features/cache-warming/index.ts b/src/features/cache-warming/index.ts
new file mode 100644
index 0000000..976844b
--- /dev/null
+++ b/src/features/cache-warming/index.ts
@@ -0,0 +1,8 @@
+export type { WarmFeedback, WarmNow } from "./logic/view-model";
+export { default as CacheWarmingView } from "./ui/CacheWarmingView.svelte";
+
+/** Public module manifest — aggregated by the shell's "Loaded Modules" view. */
+export const manifest = {
+ name: "cache-warming",
+ description: "Prompt-cache warming controls, history, and countdown",
+} as const;
diff --git a/src/features/cache-warming/logic/view-model.test.ts b/src/features/cache-warming/logic/view-model.test.ts
new file mode 100644
index 0000000..39fec80
--- /dev/null
+++ b/src/features/cache-warming/logic/view-model.test.ts
@@ -0,0 +1,228 @@
+import type { SurfaceSpec } from "@dispatch/ui-contract";
+import { describe, expect, it } from "vitest";
+import {
+ clampMinutes,
+ clampSeconds,
+ colorClass,
+ formatCountdown,
+ formatWarmLabel,
+ fromMinSec,
+ initialWarmingState,
+ observeWarm,
+ parseControls,
+ parsePct,
+ secondsUntilNext,
+ statusForPct,
+ toMinSec,
+} from "./view-model";
+
+const spec = (fields: SurfaceSpec["fields"]): SurfaceSpec => ({
+ id: "cache-warming",
+ region: "side",
+ title: "Cache Warming",
+ fields,
+});
+
+describe("parsePct", () => {
+ it("parses a percentage string", () => {
+ expect(parsePct("100%")).toBe(100);
+ expect(parsePct("93 %")).toBe(93);
+ expect(parsePct("0%")).toBe(0);
+ });
+ it("returns null for a dash / non-numeric", () => {
+ expect(parsePct("—")).toBeNull();
+ expect(parsePct("n/a")).toBeNull();
+ });
+});
+
+describe("parseControls", () => {
+ it("returns empty defaults for a null spec", () => {
+ const c = parseControls(null);
+ expect(c).toEqual({
+ enabled: false,
+ toggleActionId: null,
+ intervalSeconds: 0,
+ setIntervalActionId: null,
+ lastPct: null,
+ retentionPct: null,
+ nextWarmAt: null,
+ lastWarmAt: null,
+ });
+ });
+
+ it("extracts toggle / number / both stats / timer by kind", () => {
+ const c = parseControls(
+ spec([
+ {
+ kind: "toggle",
+ label: "Enabled",
+ value: true,
+ action: { actionId: "cache-warming/toggle" },
+ },
+ {
+ kind: "number",
+ label: "Interval",
+ value: 240,
+ unit: "s",
+ action: { actionId: "cache-warming/set-interval" },
+ },
+ { kind: "stat", label: "Last cache rate", value: "61%" },
+ { kind: "stat", label: "Cache retention", value: "100%" },
+ {
+ kind: "custom",
+ rendererId: "cache-warming-timer",
+ payload: { nextWarmAt: 1_700_000_240_000, lastWarmAt: 1_700_000_000_000 },
+ },
+ ]),
+ );
+ expect(c).toEqual({
+ enabled: true,
+ toggleActionId: "cache-warming/toggle",
+ intervalSeconds: 240,
+ setIntervalActionId: "cache-warming/set-interval",
+ lastPct: 61,
+ retentionPct: 100,
+ nextWarmAt: 1_700_000_240_000,
+ lastWarmAt: 1_700_000_000_000,
+ });
+ });
+
+ it("tells the retention stat apart from the rate stat by label", () => {
+ const c = parseControls(
+ spec([
+ { kind: "stat", label: "Cache retention", value: "100%" },
+ { kind: "stat", label: "Last cache rate", value: "61%" },
+ ]),
+ );
+ expect(c.retentionPct).toBe(100);
+ expect(c.lastPct).toBe(61);
+ });
+
+ it("treats a '—' stat as no pct", () => {
+ const c = parseControls(spec([{ kind: "stat", label: "Last cache rate", value: "—" }]));
+ expect(c.lastPct).toBeNull();
+ });
+
+ it("ignores an unknown custom renderer and a malformed timer payload", () => {
+ const c = parseControls(
+ spec([
+ { kind: "custom", rendererId: "something-else", payload: { nextWarmAt: 5 } },
+ { kind: "custom", rendererId: "cache-warming-timer", payload: "nope" },
+ ]),
+ );
+ expect(c.nextWarmAt).toBeNull();
+ expect(c.lastWarmAt).toBeNull();
+ });
+});
+
+describe("interval ↔ min/sec", () => {
+ it("clampSeconds caps at 0..59", () => {
+ expect(clampSeconds(75)).toBe(59);
+ expect(clampSeconds(-3)).toBe(0);
+ expect(clampSeconds(30)).toBe(30);
+ expect(clampSeconds(Number.NaN)).toBe(0);
+ });
+ it("clampMinutes floors at 0", () => {
+ expect(clampMinutes(-1)).toBe(0);
+ expect(clampMinutes(4)).toBe(4);
+ });
+ it("toMinSec splits total seconds", () => {
+ expect(toMinSec(240)).toEqual({ minutes: 4, seconds: 0 });
+ expect(toMinSec(125)).toEqual({ minutes: 2, seconds: 5 });
+ expect(toMinSec(45)).toEqual({ minutes: 0, seconds: 45 });
+ });
+ it("fromMinSec combines (clamping seconds to 59)", () => {
+ expect(fromMinSec(4, 0)).toBe(240);
+ expect(fromMinSec(2, 5)).toBe(125);
+ expect(fromMinSec(1, 75)).toBe(119); // 75s clamped to 59
+ });
+});
+
+describe("status + formatting", () => {
+ it("statusForPct buckets high/mid/low", () => {
+ expect(statusForPct(100)).toBe("success");
+ expect(statusForPct(80)).toBe("success");
+ expect(statusForPct(60)).toBe("warning");
+ expect(statusForPct(40)).toBe("warning");
+ expect(statusForPct(10)).toBe("error");
+ });
+ it("colorClass maps to literal DaisyUI classes", () => {
+ expect(colorClass("success")).toBe("text-success");
+ expect(colorClass("warning")).toBe("text-warning");
+ expect(colorClass("error")).toBe("text-error");
+ });
+ it("formatWarmLabel matches the manual-warm phrasing", () => {
+ expect(formatWarmLabel(100)).toBe("Warmed — 100% cache hit");
+ expect(formatWarmLabel(92.6)).toBe("Warmed — 93% cache hit");
+ });
+ it("formatCountdown renders s and m:ss", () => {
+ expect(formatCountdown(9)).toBe("9s");
+ expect(formatCountdown(59)).toBe("59s");
+ expect(formatCountdown(60)).toBe("1:00");
+ expect(formatCountdown(185)).toBe("3:05");
+ expect(formatCountdown(-5)).toBe("0s");
+ });
+});
+
+describe("warming history reducer (observeWarm)", () => {
+ it("starts empty", () => {
+ const s = initialWarmingState();
+ expect(s.history).toEqual([]);
+ expect(s.lastWarmAt).toBeNull();
+ });
+
+ it("records a new entry on each new authoritative lastWarmAt", () => {
+ let s = initialWarmingState();
+ s = observeWarm(s, 1000, 100);
+ s = observeWarm(s, 2000, 90);
+ expect(s.history).toEqual([
+ { pct: 90, at: 2000 },
+ { pct: 100, at: 1000 },
+ ]);
+ expect(s.lastWarmAt).toBe(2000);
+ });
+
+ it("de-duplicates on the timestamp, not the pct (a re-pushed surface → no dup)", () => {
+ let s = initialWarmingState();
+ s = observeWarm(s, 1000, 100); // warm
+ s = observeWarm(s, 1000, 100); // toggle/interval re-push, same lastWarmAt → skip
+ expect(s.history).toHaveLength(1);
+ });
+
+ it("records two warms with the SAME pct (distinct timestamps both count)", () => {
+ let s = initialWarmingState();
+ s = observeWarm(s, 1000, 100);
+ s = observeWarm(s, 2000, 100);
+ expect(s.history.map((e) => e.at)).toEqual([2000, 1000]);
+ });
+
+ it("ignores a null lastWarmAt; a null pct advances the key without an entry", () => {
+ let s = initialWarmingState();
+ s = observeWarm(s, null, 100);
+ expect(s.history).toEqual([]);
+ s = observeWarm(s, 1000, null);
+ expect(s.history).toEqual([]);
+ expect(s.lastWarmAt).toBe(1000);
+ });
+});
+
+describe("secondsUntilNext (authoritative, from nextWarmAt)", () => {
+ it("is null when nothing is scheduled (nextWarmAt null)", () => {
+ expect(secondsUntilNext(null, 5000)).toBeNull();
+ });
+
+ it("counts down to nextWarmAt, floored at 0", () => {
+ expect(secondsUntilNext(10_000, 10_000)).toBe(0);
+ expect(secondsUntilNext(250_000, 10_000)).toBe(240);
+ expect(secondsUntilNext(70_000, 10_000)).toBe(60);
+ });
+
+ it("treats a nextWarmAt past the stale grace as not scheduled (belt-and-braces)", () => {
+ // Within the 3s grace an on-time warm may briefly read "0s"…
+ expect(secondsUntilNext(10_000, 11_000)).toBe(0);
+ expect(secondsUntilNext(10_000, 13_000)).toBe(0);
+ // …but beyond it the value is stale → null (the "waiting…" state).
+ expect(secondsUntilNext(10_000, 13_001)).toBeNull();
+ expect(secondsUntilNext(5_000, 999_999)).toBeNull();
+ });
+});
diff --git a/src/features/cache-warming/logic/view-model.ts b/src/features/cache-warming/logic/view-model.ts
new file mode 100644
index 0000000..bc8cf2e
--- /dev/null
+++ b/src/features/cache-warming/logic/view-model.ts
@@ -0,0 +1,254 @@
+import type { SurfaceSpec } from "@dispatch/ui-contract";
+
+/**
+ * Pure core for the cache-warming view — zero DOM, zero effects, zero Svelte.
+ *
+ * The backend's `cache-warming` surface carries a toggle, a number interval (in
+ * seconds), two `stat`s ("last cache rate" + "cache retention"), and a `custom`
+ * `cache-warming-timer` field bearing the AUTHORITATIVE `nextWarmAt`/`lastWarmAt`
+ * epoch-ms timestamps. This module turns those inputs into the view-model the
+ * (thin) Svelte component renders: parsed controls, a warming-history reducer
+ * keyed off the authoritative `lastWarmAt`, an authoritative countdown, and the
+ * status/format helpers.
+ */
+
+// ── Manual-warm port (consumer-defines-port; the composition root adapts the
+// store's `POST /chat/warm` result to this shape). ──────────────────────────
+export type WarmFeedback =
+ | { readonly ok: true; readonly cachePct: number; readonly expectedCacheRate: number }
+ | { readonly ok: false; readonly error: string };
+
+export type WarmNow = () => Promise<WarmFeedback | null>;
+
+// ── Parsed surface controls ───────────────────────────────────────────────────
+
+export interface ParsedControls {
+ readonly enabled: boolean;
+ readonly toggleActionId: string | null;
+ readonly intervalSeconds: number;
+ readonly setIntervalActionId: string | null;
+ /** Most recent warm's cache-hit %, from the "last cache rate" stat (`null` when "—"/absent). */
+ readonly lastPct: number | null;
+ /** Cross-turn retention %, from the "cache retention" stat (`null` when "—"/absent). */
+ readonly retentionPct: number | null;
+ /** Authoritative epoch-ms the next AUTOMATIC warm fires, or `null` when not scheduled. */
+ readonly nextWarmAt: number | null;
+ /** Authoritative epoch-ms of the most recent completed warm, or `null` if none. */
+ readonly lastWarmAt: number | null;
+}
+
+const EMPTY_CONTROLS: ParsedControls = {
+ enabled: false,
+ toggleActionId: null,
+ intervalSeconds: 0,
+ setIntervalActionId: null,
+ lastPct: null,
+ retentionPct: null,
+ nextWarmAt: null,
+ lastWarmAt: null,
+};
+
+/** The `cache-warming-timer` custom field's renderer id (this feature owns it). */
+const TIMER_RENDERER_ID = "cache-warming-timer";
+
+/** Parse a stat's display string (e.g. "100%", "93 %", "—") into a number or null. */
+export function parsePct(value: string): number | null {
+ const match = value.match(/-?\d+(?:\.\d+)?/);
+ if (match === null) return null;
+ const n = Number(match[0]);
+ return Number.isFinite(n) ? n : null;
+}
+
+/** A finite number, else null. */
+function numOrNull(v: unknown): number | null {
+ return typeof v === "number" && Number.isFinite(v) ? v : null;
+}
+
+/** Pull the authoritative `nextWarmAt`/`lastWarmAt` out of the timer custom payload. */
+function parseTimer(payload: unknown): { nextWarmAt: number | null; lastWarmAt: number | null } {
+ if (typeof payload !== "object" || payload === null) {
+ return { nextWarmAt: null, lastWarmAt: null };
+ }
+ const p = payload as Record<string, unknown>;
+ return { nextWarmAt: numOrNull(p.nextWarmAt), lastWarmAt: numOrNull(p.lastWarmAt) };
+}
+
+/**
+ * Extract the cache-warming controls from the surface spec by FIELD KIND. The
+ * surface has one toggle, one number, two stats (rate + retention, told apart by
+ * label), and one `custom` timer field. Returns empty defaults when the spec is
+ * absent.
+ */
+export function parseControls(spec: SurfaceSpec | null): ParsedControls {
+ if (spec === null) return EMPTY_CONTROLS;
+ let enabled = false;
+ let toggleActionId: string | null = null;
+ let intervalSeconds = 0;
+ let setIntervalActionId: string | null = null;
+ let lastPct: number | null = null;
+ let retentionPct: number | null = null;
+ let nextWarmAt: number | null = null;
+ let lastWarmAt: number | null = null;
+ let seenToggle = false;
+ let seenNumber = false;
+ let seenRateStat = false;
+ for (const field of spec.fields) {
+ if (field.kind === "toggle" && !seenToggle) {
+ enabled = field.value;
+ toggleActionId = field.action.actionId;
+ seenToggle = true;
+ } else if (field.kind === "number" && !seenNumber) {
+ intervalSeconds = field.value;
+ setIntervalActionId = field.action.actionId;
+ seenNumber = true;
+ } else if (field.kind === "stat") {
+ // Retention is told apart by its label; everything else is the cache rate
+ // (first one wins, so a stray later stat can't clobber it).
+ if (/retention/i.test(field.label)) {
+ retentionPct = parsePct(field.value);
+ } else if (!seenRateStat) {
+ lastPct = parsePct(field.value);
+ seenRateStat = true;
+ }
+ } else if (field.kind === "custom" && field.rendererId === TIMER_RENDERER_ID) {
+ const timer = parseTimer(field.payload);
+ nextWarmAt = timer.nextWarmAt;
+ lastWarmAt = timer.lastWarmAt;
+ }
+ }
+ return {
+ enabled,
+ toggleActionId,
+ intervalSeconds,
+ setIntervalActionId,
+ lastPct,
+ retentionPct,
+ nextWarmAt,
+ lastWarmAt,
+ };
+}
+
+// ── Interval ↔ minutes/seconds (seconds capped at 59) ─────────────────────────
+
+export interface MinSec {
+ readonly minutes: number;
+ readonly seconds: number;
+}
+
+export function clampSeconds(n: number): number {
+ if (!Number.isFinite(n)) return 0;
+ return Math.min(59, Math.max(0, Math.floor(n)));
+}
+
+export function clampMinutes(n: number): number {
+ if (!Number.isFinite(n)) return 0;
+ return Math.max(0, Math.floor(n));
+}
+
+export function toMinSec(totalSeconds: number): MinSec {
+ const total = Math.max(0, Math.floor(totalSeconds));
+ return { minutes: Math.floor(total / 60), seconds: total % 60 };
+}
+
+/** Combine a minutes + seconds pair (each clamped) into total seconds. */
+export function fromMinSec(minutes: number, seconds: number): number {
+ return clampMinutes(minutes) * 60 + clampSeconds(seconds);
+}
+
+// ── Status + formatting ───────────────────────────────────────────────────────
+
+export type WarmStatus = "success" | "warning" | "error";
+
+/** Cache-hit % → semantic status (green high, yellow mid, red low). */
+export function statusForPct(pct: number): WarmStatus {
+ if (pct >= 80) return "success";
+ if (pct >= 40) return "warning";
+ return "error";
+}
+
+/** A status → its DaisyUI text-colour class (full literal so Tailwind keeps it). */
+export function colorClass(status: WarmStatus): string {
+ switch (status) {
+ case "success":
+ return "text-success";
+ case "warning":
+ return "text-warning";
+ case "error":
+ return "text-error";
+ }
+}
+
+/** The status line for a warm, matching the manual-warm feedback phrasing. */
+export function formatWarmLabel(pct: number): string {
+ return `Warmed — ${Math.round(pct)}% cache hit`;
+}
+
+/** Seconds → a short countdown string (e.g. "3:05", "9s"). */
+export function formatCountdown(seconds: number): string {
+ const s = Math.max(0, Math.floor(seconds));
+ if (s < 60) return `${s}s`;
+ const m = Math.floor(s / 60);
+ const rem = s % 60;
+ return `${m}:${String(rem).padStart(2, "0")}`;
+}
+
+// ── Warming history reducer (keyed off the authoritative `lastWarmAt`) ─────────
+
+export interface WarmEntry {
+ readonly pct: number;
+ /** Authoritative epoch-ms of this warm (the surface's `lastWarmAt`). */
+ readonly at: number;
+}
+
+export interface WarmingViewState {
+ /** Warmings, MOST RECENT FIRST. */
+ readonly history: readonly WarmEntry[];
+ /** The last authoritative `lastWarmAt` recorded, for change-detection (de-dup key). */
+ readonly lastWarmAt: number | null;
+}
+
+const MAX_HISTORY = 50;
+
+export function initialWarmingState(): WarmingViewState {
+ return { history: [], lastWarmAt: null };
+}
+
+/**
+ * Fold the surface's authoritative `lastWarmAt` + current "last cache rate" into
+ * history. Records a new entry only when `lastWarmAt` CHANGED (a toggle/interval
+ * update re-pushes the same timestamp → no entry), de-duplicated on the timestamp
+ * (not the pct, so two warms with the same % both count). A null `lastWarmAt` is
+ * ignored; a null pct advances the de-dup key without adding an entry.
+ */
+export function observeWarm(
+ state: WarmingViewState,
+ lastWarmAt: number | null,
+ pct: number | null,
+): WarmingViewState {
+ if (lastWarmAt === null || lastWarmAt === state.lastWarmAt) return state;
+ if (pct === null) return { ...state, lastWarmAt };
+ const history = [{ pct, at: lastWarmAt }, ...state.history].slice(0, MAX_HISTORY);
+ return { history, lastWarmAt };
+}
+
+/**
+ * Grace before a PAST `nextWarmAt` is treated as "not scheduled" (→ the
+ * "waiting…" state instead of a perpetual "0s"). The backend pushes the FUTURE
+ * `nextWarmAt` after every warm (CR-4b) and `null` while generating/disabled, so
+ * this is a belt-and-braces guard that should never trigger — it only matters
+ * against a stale/buggy emitter, and the small window lets an on-time warm show
+ * "0s" for the second it takes to complete.
+ */
+const STALE_NEXT_WARM_MS = 3000;
+
+/**
+ * Seconds until the next automatic warm, AUTHORITATIVE: derived straight from the
+ * backend's `nextWarmAt` epoch-ms (never FE-anchored/guessed). `null` when nothing
+ * is scheduled (disabled, or a turn is generating so the timer is cancelled) — or
+ * when `nextWarmAt` is stale (further than the grace into the past).
+ */
+export function secondsUntilNext(nextWarmAt: number | null, now: number): number | null {
+ if (nextWarmAt === null) return null;
+ if (now - nextWarmAt > STALE_NEXT_WARM_MS) return null;
+ return Math.max(0, Math.ceil((nextWarmAt - now) / 1000));
+}
diff --git a/src/features/cache-warming/ui/CacheWarmingView.svelte b/src/features/cache-warming/ui/CacheWarmingView.svelte
new file mode 100644
index 0000000..9b3d694
--- /dev/null
+++ b/src/features/cache-warming/ui/CacheWarmingView.svelte
@@ -0,0 +1,244 @@
+<script lang="ts">
+ import type { InvokeMessage, SurfaceSpec } from "@dispatch/ui-contract";
+ import { onMount, untrack } from "svelte";
+ import {
+ clampMinutes,
+ clampSeconds,
+ colorClass,
+ formatCountdown,
+ formatWarmLabel,
+ fromMinSec,
+ initialWarmingState,
+ observeWarm,
+ parseControls,
+ secondsUntilNext,
+ statusForPct,
+ toMinSec,
+ type WarmingViewState,
+ type WarmNow,
+ } from "../logic/view-model";
+
+ let {
+ spec,
+ canWarm,
+ onInvoke,
+ warmNow,
+ }: {
+ /** The cache-warming surface spec for the focused conversation, or null. */
+ spec: SurfaceSpec | null;
+ /** Whether a real conversation is focused (a draft has nothing to warm). */
+ canWarm: boolean;
+ onInvoke: (msg: InvokeMessage) => void;
+ warmNow: WarmNow;
+ } = $props();
+
+ const controls = $derived(parseControls(spec));
+
+ // View-model state (pure reducer) + the injected clock — owned here, not ambient.
+ let vm = $state<WarmingViewState>(initialWarmingState());
+ let now = $state(Date.now());
+ let warming = $state(false);
+ let errorText = $state<string | null>(null);
+ // Transient result of the most recent manual warm (immediate feedback; history
+ // itself is driven authoritatively by the surface's `lastWarmAt`).
+ let manualResult = $state<{ cachePct: number; expectedCacheRate: number } | null>(null);
+
+ // Local interval inputs, seeded from the surface and re-seeded only when the
+ // surface's interval differs from what's shown (so a stray update mid-edit
+ // doesn't clobber typing).
+ let minutes = $state(0);
+ let seconds = $state(0);
+
+ onMount(() => {
+ const id = setInterval(() => {
+ now = Date.now();
+ }, 1000);
+ return () => clearInterval(id);
+ });
+
+ // Fold each authoritative warm (new `lastWarmAt`) into history.
+ $effect(() => {
+ const at = controls.lastWarmAt;
+ const pct = controls.lastPct;
+ untrack(() => {
+ vm = observeWarm(vm, at, pct);
+ });
+ });
+
+ // Keep the min/sec inputs in sync with the surface's interval.
+ $effect(() => {
+ const target = controls.intervalSeconds;
+ untrack(() => {
+ if (fromMinSec(minutes, seconds) !== target) {
+ const ms = toMinSec(target);
+ minutes = ms.minutes;
+ seconds = ms.seconds;
+ }
+ });
+ });
+
+ const remaining = $derived(secondsUntilNext(controls.nextWarmAt, now));
+ const history = $derived(vm.history);
+ const latest = $derived(history[0] ?? null);
+ const earlier = $derived(history.slice(1));
+
+ function commitInterval() {
+ const actionId = controls.setIntervalActionId;
+ if (actionId === null || spec === null) return;
+ onInvoke({
+ type: "invoke",
+ surfaceId: spec.id,
+ actionId,
+ payload: fromMinSec(minutes, seconds),
+ });
+ }
+
+ function onMinutes(event: Event) {
+ const next = (event.target as HTMLInputElement).valueAsNumber;
+ if (Number.isNaN(next)) return; // empty input — ignore, don't clobber to 0
+ minutes = clampMinutes(next);
+ commitInterval();
+ }
+
+ function onSeconds(event: Event) {
+ const next = (event.target as HTMLInputElement).valueAsNumber;
+ if (Number.isNaN(next)) return; // empty input — ignore, don't clobber to 0
+ seconds = clampSeconds(next);
+ commitInterval();
+ }
+
+ function onToggle() {
+ const actionId = controls.toggleActionId;
+ if (actionId === null || spec === null) return;
+ // The toggle action FLIPS server-side; no payload.
+ onInvoke({ type: "invoke", surfaceId: spec.id, actionId });
+ }
+
+ async function handleWarm() {
+ if (warming) return;
+ warming = true;
+ errorText = null;
+ const result = await warmNow();
+ warming = false;
+ if (result === null) return;
+ if (result.ok) {
+ // Immediate feedback only — the authoritative surface `update` (new
+ // `lastWarmAt`) drives the history via `observeWarm`.
+ manualResult = { cachePct: result.cachePct, expectedCacheRate: result.expectedCacheRate };
+ } else {
+ manualResult = null;
+ errorText = result.error;
+ }
+ }
+</script>
+
+<div class="flex flex-col gap-3">
+ <!-- Enabled -->
+ <label class="flex items-center justify-between gap-2 text-sm">
+ <span>Enabled</span>
+ <input
+ type="checkbox"
+ class="toggle toggle-sm toggle-success"
+ checked={controls.enabled}
+ disabled={spec === null}
+ onchange={onToggle}
+ />
+ </label>
+
+ <!-- Refresh interval: minutes + seconds (seconds capped at 59) -->
+ <div class="flex items-center justify-between gap-2 text-sm">
+ <span>Refresh interval</span>
+ <span class="flex items-center gap-1">
+ <input
+ type="number"
+ class="input input-bordered input-sm w-16"
+ min="0"
+ value={minutes}
+ disabled={spec === null}
+ onchange={onMinutes}
+ aria-label="Interval minutes"
+ />
+ <span class="opacity-60">m</span>
+ <input
+ type="number"
+ class="input input-bordered input-sm w-16"
+ min="0"
+ max="59"
+ value={seconds}
+ disabled={spec === null}
+ onchange={onSeconds}
+ aria-label="Interval seconds"
+ />
+ <span class="opacity-60">s</span>
+ </span>
+ </div>
+
+ <!-- Countdown to the next automatic warm (authoritative: driven by nextWarmAt) -->
+ {#if !controls.enabled}
+ <p class="text-xs opacity-50">Warming paused.</p>
+ {:else if remaining !== null}
+ <p class="text-xs opacity-70">Next warm in {formatCountdown(remaining)}</p>
+ {:else}
+ <p class="text-xs opacity-50">Next warm: waiting…</p>
+ {/if}
+
+ <!-- Cross-turn retention (the "is warming working?" health signal) -->
+ {#if controls.retentionPct !== null}
+ <p class="text-xs {colorClass(statusForPct(controls.retentionPct))}">
+ Cache retention: {controls.retentionPct}%
+ </p>
+ {/if}
+
+ <!-- Manual trigger -->
+ <button
+ type="button"
+ class="btn btn-sm btn-outline"
+ disabled={!canWarm || warming}
+ onclick={handleWarm}
+ >
+ {#if warming}
+ <span class="loading loading-spinner loading-xs"></span>
+ Warming…
+ {:else}
+ Warm now
+ {/if}
+ </button>
+
+ {#if !canWarm}
+ <p class="text-xs opacity-60">Open or start a conversation to control its cache warming.</p>
+ {:else if errorText}
+ <p class="text-xs text-error">{errorText}</p>
+ {:else if manualResult}
+ <!-- Headline the retention (cache health) over the raw hit %. -->
+ <p class="text-xs {colorClass(statusForPct(manualResult.expectedCacheRate))}">
+ Warmed — {manualResult.expectedCacheRate}% retained ({manualResult.cachePct}% of prompt
+ cached)
+ </p>
+ {/if}
+
+ <!-- Warming history: collapse whose title is the most recent warm, coloured by
+ hit %, with the earlier warmings inside. -->
+ {#if latest}
+ <div class="collapse collapse-arrow bg-base-200">
+ <input type="checkbox" aria-label="Toggle warming history" />
+ <div
+ class="collapse-title min-h-0 py-2 font-normal text-sm {colorClass(
+ statusForPct(latest.pct),
+ )}"
+ >
+ {formatWarmLabel(latest.pct)}
+ </div>
+ <div class="collapse-content flex flex-col gap-1 text-sm">
+ {#if earlier.length > 0}
+ {#each earlier as entry, i (i)}
+ <p class={colorClass(statusForPct(entry.pct))}>{formatWarmLabel(entry.pct)}</p>
+ {/each}
+ {:else}
+ <p class="text-xs opacity-60">No earlier warmings.</p>
+ {/if}
+ </div>
+ </div>
+ {:else}
+ <p class="text-xs opacity-60">No warming yet.</p>
+ {/if}
+</div>
diff --git a/src/features/chat/index.ts b/src/features/chat/index.ts
index f1e8e29..cf57cea 100644
--- a/src/features/chat/index.ts
+++ b/src/features/chat/index.ts
@@ -1,7 +1,37 @@
-export type { RenderedChunk } from "../../core/chunks";
-export type { ChatTransport, HistorySync } from "./ports";
+export type {
+ ProviderRetryView,
+ RenderedChunk,
+ RenderGroup,
+ ToolBatchEntry,
+} from "../../core/chunks";
+export { groupRenderedChunks, resolveImageUrl, viewProviderRetry } from "../../core/chunks";
+export type { TurnMetricsEntry } from "../../core/metrics";
+export { isVisionModel } from "./model-select";
+export type { ChatTransport, HistorySync, HistoryWindow, MetricsSync } from "./ports";
+export type {
+ EffortOption,
+ ReasoningEffortSaveResult,
+ SaveReasoningEffort,
+} from "./reasoning-effort";
+export {
+ DEFAULT_REASONING_EFFORT,
+ effectiveEffort,
+ effortOptions,
+ isReasoningEffort,
+ REASONING_EFFORT_LEVELS,
+} from "./reasoning-effort";
export type { ChatStore, ChatStoreDependencies } from "./store.svelte";
export { createChatStore } from "./store.svelte";
export { default as ChatView } from "./ui/ChatView.svelte";
+export type { CompactNowResult, SaveCompactPercentResult } from "./ui/CompactionView.svelte";
+export { default as CompactionView } from "./ui/CompactionView.svelte";
+export type { ComposerStatus } from "./ui/Composer.svelte";
export { default as Composer } from "./ui/Composer.svelte";
export { default as ModelSelector } from "./ui/ModelSelector.svelte";
+export { default as ReasoningEffortSelector } from "./ui/ReasoningEffortSelector.svelte";
+
+/** Public module manifest — aggregated by the shell's "Loaded Modules" view. */
+export const manifest = {
+ name: "chat",
+ description: "Conversation turns, composer, model selector, and metrics",
+} as const;
diff --git a/src/features/chat/model-select.test.ts b/src/features/chat/model-select.test.ts
new file mode 100644
index 0000000..6d3081d
--- /dev/null
+++ b/src/features/chat/model-select.test.ts
@@ -0,0 +1,89 @@
+import { describe, expect, it } from "vitest";
+import {
+ isVisionModel,
+ joinModelName,
+ modelKeys,
+ modelsForKey,
+ splitModelName,
+} from "./model-select";
+
+describe("splitModelName", () => {
+ it("splits on the first slash", () => {
+ expect(splitModelName("openai/gpt-4")).toEqual({ key: "openai", model: "gpt-4" });
+ });
+
+ it("keeps slashes in the model part (splits only the first)", () => {
+ expect(splitModelName("openrouter/anthropic/claude")).toEqual({
+ key: "openrouter",
+ model: "anthropic/claude",
+ });
+ });
+
+ it("treats a slashless name as all key", () => {
+ expect(splitModelName("local")).toEqual({ key: "local", model: "" });
+ });
+});
+
+describe("joinModelName", () => {
+ it("recombines key + model", () => {
+ expect(joinModelName("openai", "gpt-4")).toBe("openai/gpt-4");
+ });
+
+ it("returns just the key when the model is empty", () => {
+ expect(joinModelName("local", "")).toBe("local");
+ });
+
+ it("round-trips with splitModelName", () => {
+ const full = "openrouter/anthropic/claude";
+ const { key, model } = splitModelName(full);
+ expect(joinModelName(key, model)).toBe(full);
+ });
+});
+
+describe("modelKeys", () => {
+ it("returns distinct keys in first-seen order", () => {
+ expect(
+ modelKeys(["openai/gpt-4", "openai/gpt-4o", "anthropic/claude-3", "google/gemini"]),
+ ).toEqual(["openai", "anthropic", "google"]);
+ });
+
+ it("is empty for no models", () => {
+ expect(modelKeys([])).toEqual([]);
+ });
+});
+
+describe("modelsForKey", () => {
+ it("returns the model suffixes under a key, in order", () => {
+ const models = ["openai/gpt-4", "anthropic/claude-3", "openai/gpt-4o"];
+ expect(modelsForKey(models, "openai")).toEqual(["gpt-4", "gpt-4o"]);
+ });
+
+ it("returns empty for an unknown key", () => {
+ expect(modelsForKey(["openai/gpt-4"], "anthropic")).toEqual([]);
+ });
+});
+
+describe("isVisionModel", () => {
+ it("returns true when modelInfo[name].vision is true", () => {
+ const info = { "kimi/k2": { vision: true } };
+ expect(isVisionModel(info, "kimi/k2")).toBe(true);
+ });
+
+ it("returns false when vision is false", () => {
+ const info = { "umans/glm-5.2": { vision: false } };
+ expect(isVisionModel(info, "umans/glm-5.2")).toBe(false);
+ });
+
+ it("returns false when vision is absent (unknown)", () => {
+ const info = { "umans/glm-5.2": { contextWindow: 128000 } };
+ expect(isVisionModel(info, "umans/glm-5.2")).toBe(false);
+ });
+
+ it("returns false for a model with no metadata entry at all", () => {
+ expect(isVisionModel({}, "unknown/model")).toBe(false);
+ });
+
+ it("returns false for an empty modelInfo map", () => {
+ expect(isVisionModel({}, "kimi/k2")).toBe(false);
+ });
+});
diff --git a/src/features/chat/model-select.ts b/src/features/chat/model-select.ts
new file mode 100644
index 0000000..602e0ef
--- /dev/null
+++ b/src/features/chat/model-select.ts
@@ -0,0 +1,64 @@
+import type { ModelMetadata } from "@dispatch/transport-contract";
+
+/**
+ * Pure helpers for the two-step model picker.
+ *
+ * Models arrive from `GET /models` as `<key>/<model>` strings, where `key` is
+ * the credential name (the part before the FIRST slash) and `model` is the rest.
+ * These pure functions split that into a key selector + a model selector and
+ * recombine the choice — zero DOM, zero Svelte.
+ */
+
+export interface SplitModel {
+ readonly key: string;
+ readonly model: string;
+}
+
+/** Split `<key>/<model>` on the first slash. A slashless name is all-key. */
+export function splitModelName(full: string): SplitModel {
+ const i = full.indexOf("/");
+ if (i === -1) return { key: full, model: "" };
+ return { key: full.slice(0, i), model: full.slice(i + 1) };
+}
+
+/** Recombine a key + model into a `<key>/<model>` name (key-only if no model). */
+export function joinModelName(key: string, model: string): string {
+ return model === "" ? key : `${key}/${model}`;
+}
+
+/** Distinct keys across all models, in first-seen order. */
+export function modelKeys(models: readonly string[]): string[] {
+ const seen = new Set<string>();
+ const out: string[] = [];
+ for (const full of models) {
+ const { key } = splitModelName(full);
+ if (!seen.has(key)) {
+ seen.add(key);
+ out.push(key);
+ }
+ }
+ return out;
+}
+
+/** The model suffixes available under a given key, in order. */
+export function modelsForKey(models: readonly string[], key: string): string[] {
+ const out: string[] = [];
+ for (const full of models) {
+ const split = splitModelName(full);
+ if (split.key === key) out.push(split.model);
+ }
+ return out;
+}
+
+/**
+ * Whether a given full model name (`<key>/<model>`) is vision-capable — i.e.
+ * `GET /models` `modelInfo[name].vision === true`. Absent/`false`/unknown →
+ * `false` (the server's vision handoff transcribes images to text for it).
+ * Pure lookup against the catalog metadata; zero DOM.
+ */
+export function isVisionModel(
+ modelInfo: Readonly<Record<string, ModelMetadata>>,
+ fullName: string,
+): boolean {
+ return modelInfo[fullName]?.vision === true;
+}
diff --git a/src/features/chat/ports.ts b/src/features/chat/ports.ts
index 07943c7..2fe10dc 100644
--- a/src/features/chat/ports.ts
+++ b/src/features/chat/ports.ts
@@ -1,12 +1,43 @@
-import type { ChatSendMessage, ConversationHistoryResponse } from "@dispatch/transport-contract";
+import type {
+ ChatQueueMessage,
+ ChatSendMessage,
+ ConversationHistoryResponse,
+ ConversationMetricsResponse,
+} from "@dispatch/transport-contract";
-/** Injected transport port — sends chat messages to the server. */
+/**
+ * Injected transport port — sends chat messages to the server. Accepts both
+ * `chat.send` (start a turn) and `chat.queue` (enqueue a steering message;
+ * auto-starts a turn if idle).
+ */
export interface ChatTransport {
- send(msg: ChatSendMessage): void;
+ send(msg: ChatSendMessage | ChatQueueMessage): void;
}
-/** Injected history-sync port — fetches incremental history from the server. */
+/**
+ * Optional windowing for a history fetch ([email protected], CR-5).
+ * Both must be POSITIVE integers when present (the server 400s otherwise).
+ */
+export interface HistoryWindow {
+ /** Return only the NEWEST `limit` chunks of the selection (still ascending). */
+ readonly limit?: number;
+ /** Exclusive upper bound: only chunks with `seq < beforeSeq` (backfill paging). */
+ readonly beforeSeq?: number;
+}
+
+/**
+ * Injected history-sync port — fetches incremental history from the server
+ * (`GET /conversations/:id?sinceSeq=&beforeSeq=&limit=`). NOTE the contract
+ * caveat: on a windowed/backfill read the response's `latestSeq` describes the
+ * returned window, not the conversation's high-water mark — never regress a
+ * tail cursor from it (the FE's cursor comes from the cache's max seq, which
+ * satisfies this naturally).
+ */
export type HistorySync = (
- conversationId: string,
- sinceSeq: number,
+ conversationId: string,
+ sinceSeq: number,
+ window?: HistoryWindow,
) => Promise<ConversationHistoryResponse>;
+
+/** Injected metrics-sync port — fetches persisted per-turn metrics from the server. */
+export type MetricsSync = (conversationId: string) => Promise<ConversationMetricsResponse>;
diff --git a/src/features/chat/reasoning-effort.test.ts b/src/features/chat/reasoning-effort.test.ts
new file mode 100644
index 0000000..6d409e9
--- /dev/null
+++ b/src/features/chat/reasoning-effort.test.ts
@@ -0,0 +1,45 @@
+import { describe, expect, it } from "vitest";
+import {
+ DEFAULT_REASONING_EFFORT,
+ effectiveEffort,
+ effortOptions,
+ isReasoningEffort,
+ REASONING_EFFORT_LEVELS,
+} from "./reasoning-effort";
+
+describe("reasoning-effort helpers", () => {
+ it("ladder matches the wire contract, in ascending depth order", () => {
+ expect(REASONING_EFFORT_LEVELS).toEqual(["low", "medium", "high", "xhigh", "max"]);
+ });
+
+ it("the server default is high", () => {
+ expect(DEFAULT_REASONING_EFFORT).toBe("high");
+ });
+
+ it("isReasoningEffort narrows ladder strings and rejects everything else", () => {
+ for (const level of REASONING_EFFORT_LEVELS) {
+ expect(isReasoningEffort(level)).toBe(true);
+ }
+ expect(isReasoningEffort("banana")).toBe(false);
+ expect(isReasoningEffort("")).toBe(false);
+ expect(isReasoningEffort("HIGH")).toBe(false);
+ });
+
+ it("effectiveEffort maps null (never set) to the default, not 'off'", () => {
+ expect(effectiveEffort(null)).toBe("high");
+ });
+
+ it("effectiveEffort passes a persisted value through", () => {
+ expect(effectiveEffort("xhigh")).toBe("xhigh");
+ expect(effectiveEffort("low")).toBe("low");
+ });
+
+ it("effortOptions lists every level once and marks only the default", () => {
+ const options = effortOptions();
+ expect(options.map((o) => o.value)).toEqual([...REASONING_EFFORT_LEVELS]);
+ expect(options.find((o) => o.value === "high")?.label).toBe("high (default)");
+ for (const option of options) {
+ if (option.value !== "high") expect(option.label).toBe(option.value);
+ }
+ });
+});
diff --git a/src/features/chat/reasoning-effort.ts b/src/features/chat/reasoning-effort.ts
new file mode 100644
index 0000000..1eb77b6
--- /dev/null
+++ b/src/features/chat/reasoning-effort.ts
@@ -0,0 +1,66 @@
+import type { ReasoningEffort } from "@dispatch/transport-contract";
+
+/**
+ * Pure helpers for the reasoning-effort selector (the thinking-depth knob).
+ *
+ * The canonical ladder + resolution chain are SERVER-owned (`[email protected]`
+ * `ReasoningEffort`; per-turn override → persisted conversation value → default
+ * `"high"`). These helpers only shape the persisted value for display: a `null`
+ * from `GET /conversations/:id/reasoning-effort` means "never set ⇒ the default
+ * applies", so the selector shows `high (default)` — never "off". Zero DOM,
+ * zero Svelte.
+ */
+
+/** The canonical ladder, in ascending thinking-depth order (`[email protected]`). */
+export const REASONING_EFFORT_LEVELS: readonly ReasoningEffort[] = [
+ "low",
+ "medium",
+ "high",
+ "xhigh",
+ "max",
+];
+
+/** The server's fallback when nothing is set (the resolution chain's tail). */
+export const DEFAULT_REASONING_EFFORT: ReasoningEffort = "high";
+
+/** Narrow an untrusted string (e.g. a `<select>` value) to the ladder. */
+export function isReasoningEffort(value: string): value is ReasoningEffort {
+ return (REASONING_EFFORT_LEVELS as readonly string[]).includes(value);
+}
+
+/**
+ * The level the selector should show as selected: the persisted value, or the
+ * server default when never set (`null` = "default applies", not "off").
+ */
+export function effectiveEffort(persisted: ReasoningEffort | null): ReasoningEffort {
+ return persisted ?? DEFAULT_REASONING_EFFORT;
+}
+
+/** One `<option>` of the selector. */
+export interface EffortOption {
+ readonly value: ReasoningEffort;
+ readonly label: string;
+}
+
+/**
+ * The selector's options: every ladder level, with the server default marked
+ * `(default)` so a never-set conversation reads "high (default)".
+ */
+export function effortOptions(): readonly EffortOption[] {
+ return REASONING_EFFORT_LEVELS.map((level) => ({
+ value: level,
+ label: level === DEFAULT_REASONING_EFFORT ? `${level} (default)` : level,
+ }));
+}
+
+// ── Injected port (consumer-defines-port; the composition root adapts the
+// store's `PUT /conversations/:id/reasoning-effort` to this shape). ────────
+
+/** Outcome of `PUT /conversations/:id/reasoning-effort`. */
+export type ReasoningEffortSaveResult =
+ | { readonly ok: true; readonly reasoningEffort: ReasoningEffort }
+ | { readonly ok: false; readonly error: string };
+
+export type SaveReasoningEffort = (
+ level: ReasoningEffort,
+) => Promise<ReasoningEffortSaveResult | null>;
diff --git a/src/features/chat/store.svelte.ts b/src/features/chat/store.svelte.ts
index 1d8ab17..9911438 100644
--- a/src/features/chat/store.svelte.ts
+++ b/src/features/chat/store.svelte.ts
@@ -1,124 +1,409 @@
import type {
- ChatDeltaMessage,
- ChatErrorMessage,
- ChatSendMessage,
+ ChatDeltaMessage,
+ ChatErrorMessage,
+ ChatQueueMessage,
+ ChatSendMessage,
} from "@dispatch/transport-contract";
-import type { ChatMessage } from "@dispatch/wire";
+import type { ChatMessage, ImageInput, StoredChunk, TurnProviderRetryEvent } from "@dispatch/wire";
import type { RenderedChunk, TranscriptState } from "../../core/chunks";
import {
- appendUserMessage,
- applyHistory,
- foldEvent,
- initialState,
- selectChunks,
- selectMessages,
+ appendUserMessage,
+ applyHistory,
+ clearGenerating,
+ foldEvent,
+ initialState,
+ initialWindowSize,
+ normalizeChatLimit,
+ restoreEarlier,
+ selectChunks,
+ selectGenerating,
+ selectHasEarlier,
+ selectMessages,
+ selectProviderRetry,
+ trimTranscript,
+ unloadCount,
+ windowTranscript,
} from "../../core/chunks";
+import type { MetricsState, TurnMetricsEntry } from "../../core/metrics";
+import {
+ applyDurableMetrics,
+ foldMetricsEvent,
+ initialMetricsState,
+ selectCurrentContextSize,
+ selectOrderedTurnMetrics,
+} from "../../core/metrics";
import type { ConversationCache } from "../conversation-cache";
-import type { ChatTransport, HistorySync } from "./ports";
+import type { ChatTransport, HistorySync, MetricsSync } from "./ports";
export interface ChatStoreDependencies {
- readonly conversationId: string;
- readonly model?: string;
- readonly transport: ChatTransport;
- readonly historySync: HistorySync;
- readonly cache: ConversationCache;
+ readonly conversationId: string;
+ readonly model?: string;
+ readonly transport: ChatTransport;
+ readonly historySync: HistorySync;
+ readonly metricsSync: MetricsSync;
+ readonly cache: ConversationCache;
+ /**
+ * The workspace this conversation belongs to (its URL slug). Sent on
+ * `chat.send`/`chat.queue` so the backend stamps the conversation's workspace
+ * at creation (default "default"). Absent → omitted (legacy behavior).
+ */
+ readonly workspaceId?: string;
+ /**
+ * The chat limit: max loaded chunks before the oldest quarter is unloaded
+ * (see `core/chunks/trim.ts`). Normalized via `normalizeChatLimit`; absent →
+ * `DEFAULT_CHAT_LIMIT`.
+ */
+ readonly chatLimit?: number;
+ /**
+ * Whether unloading may run RIGHT NOW. The composition root wires this to the
+ * smart-scroll "stuck to bottom" state: while the reader is scrolled up, a
+ * trim would yank the content under them, so it is DEFERRED until they return
+ * to the bottom (the next fold retries). Absent → always allowed.
+ */
+ readonly canUnload?: () => boolean;
+ /**
+ * Called when a swallowed error should be surfaced to the user (e.g. a
+ * metrics sync failure). Wired by the composition root to the app store's
+ * `reportError` → full-screen error modal. Absent → errors are logged only.
+ */
+ readonly onError?: (context: string, err: unknown) => void;
}
export interface ChatStore {
- readonly messages: readonly ChatMessage[];
- readonly chunks: readonly RenderedChunk[];
- readonly pendingSync: boolean;
- readonly error: string | null;
- readonly model: string | undefined;
- handleDelta(msg: ChatDeltaMessage | ChatErrorMessage): void;
- send(text: string): void;
- setModel(model: string): void;
- load(): Promise<void>;
- dispose(): void;
+ readonly messages: readonly ChatMessage[];
+ readonly chunks: readonly RenderedChunk[];
+ readonly turnMetrics: readonly TurnMetricsEntry[];
+ /**
+ * The conversation's current context size (tokens occupied) — updated
+ * PROGRESSIVELY: during an in-flight turn, the most recent step's
+ * `inputTokens + outputTokens` (each step's input already includes all prior
+ * context); once the turn seals, its authoritative `contextSize`. `undefined`
+ * ("unknown") when no step has reported usage yet. Never `0` for the unknown
+ * case.
+ */
+ readonly currentContextSize: number | undefined;
+ /**
+ * Whether a turn is currently generating server-side — derived from the event
+ * stream (`turn-start`…no-`done`/`turn-sealed`-yet). True for ANY watching
+ * client: the sender, a second device, or a reconnected client whose in-flight
+ * turn was replayed. Drives the composer's "generating…" indicator.
+ */
+ readonly generating: boolean;
+ /**
+ * The latest `provider-retry` event for the current turn, or `null` when no
+ * retry is pending. Drives the transient yellow "retrying…" warning banner —
+ * never persisted (never sent to the model or replayed on reload). Coalesces
+ * to the newest attempt + delay; cleared when content resumes or the turn ends.
+ */
+ readonly providerRetry: TurnProviderRetryEvent | null;
+ readonly pendingSync: boolean;
+ readonly error: string | null;
+ readonly model: string | undefined;
+ /**
+ * Whether earlier history was unloaded by the chat limit (or never loaded by
+ * the fresh-load window) and can be paged back in — drives the
+ * "Show earlier messages" affordance.
+ */
+ readonly hasEarlier: boolean;
+ /**
+ * Render-key base for thinking collapses: how many thinking chunks are
+ * unloaded below the watermark, so the UI's ordinal keys stay stable across
+ * a trim (see `TranscriptState.hiddenThinkingCount`).
+ */
+ readonly thinkingKeyBase: number;
+ handleDelta(msg: ChatDeltaMessage | ChatErrorMessage): void;
+ /**
+ * Send a user message (start a turn via `chat.send`). Optimistically echoes
+ * the text + any `images` as provisional user chunks (`[text, image, …]` in
+ * order), then forwards them on the WS `chat.send` op. `images` is omitted on
+ * the wire when none are staged (text-only, backward compatible). An
+ * images-only send (empty text) is allowed — the message text is `""`.
+ */
+ send(text: string, images?: readonly ImageInput[]): void;
+ /**
+ * Enqueue a steering message onto the conversation's queue (`chat.queue`
+ * WS op). While a turn is generating, the message is delivered mid-turn at
+ * the next tool-result boundary (a `steering` `AgentEvent` fires + the
+ * message-queue surface updates). When no turn is active, the server
+ * auto-starts a turn with the message as its opening prompt (equivalent to
+ * `chat.send`). No optimistic transcript echo — the queue SURFACE carries the
+ * pending message until drain; the `steering` event places it in the
+ * transcript. `text` must be non-empty (the server 400/errors otherwise).
+ */
+ queueMessage(text: string): void;
+ setModel(model: string): void;
+ /**
+ * Update the chat limit LIVE: re-normalizes, then adjusts the loaded window.
+ * Lowering it unloads older committed chunks (deferred via the gate while the
+ * reader is scrolled up, catching up on the next mutation). Raising it
+ * REFILLS older history (cache first, then CR-5 `?beforeSeq=`) up to the
+ * fresh-load window (`initialWindowSize` = 75% of the limit) — the same
+ * window a fresh `load()` would show — so upping the limit reveals more
+ * history instead of leaving a partial view. New deltas + loads use the new
+ * limit. The refill awaits, so a caller can preserve scroll over the prepend.
+ */
+ setChatLimit(limit: number): Promise<void>;
+ load(): Promise<void>;
+ /**
+ * Page one unload-unit (`ceil(limit/4)`) of earlier history back in — the
+ * "Show earlier messages" action. Local cache first; when the cache doesn't
+ * reach far enough back (a server-windowed fresh load), the missing older
+ * run is fetched via CR-5 `?beforeSeq=&limit=` and persisted to the cache.
+ */
+ showEarlier(): Promise<void>;
+ /**
+ * Re-sync after a WS (re)connect. Clears any stale `generating` (a turn may
+ * have sealed while disconnected — the live `turn-sealed` was missed), then
+ * pulls newly-sealed turns from history (+ metrics). If the turn is still
+ * running, the server's post-subscribe replay re-asserts `generating`. The
+ * app store pairs this with a `chat.subscribe` for the conversation.
+ */
+ resync(): void;
+ dispose(): void;
}
export function createChatStore(deps: ChatStoreDependencies): ChatStore {
- let transcript = $state<TranscriptState>(initialState());
- let _pendingSync = $state(false);
- let _error = $state<string | null>(null);
- let _model = $state<string | undefined>(deps.model);
- let disposed = false;
-
- async function syncTail(): Promise<void> {
- if (disposed || _pendingSync) return;
- _pendingSync = true;
- try {
- const since = await deps.cache.sinceSeq(deps.conversationId);
- const res = await deps.historySync(deps.conversationId, since);
- const merged = await deps.cache.commit(deps.conversationId, res.chunks);
- transcript = applyHistory(transcript, merged);
- _error = null;
- } catch (err) {
- _error = err instanceof Error ? err.message : String(err);
- } finally {
- _pendingSync = false;
- }
- }
-
- return {
- get messages(): readonly ChatMessage[] {
- return selectMessages(transcript);
- },
- get chunks(): readonly RenderedChunk[] {
- return selectChunks(transcript);
- },
- get pendingSync(): boolean {
- return _pendingSync;
- },
- get error(): string | null {
- return _error;
- },
- get model(): string | undefined {
- return _model;
- },
-
- handleDelta(msg: ChatDeltaMessage | ChatErrorMessage): void {
- if (msg.type === "chat.error") {
- if (msg.conversationId !== undefined && msg.conversationId !== deps.conversationId) {
- return;
- }
- _error = msg.message;
- return;
- }
- if (msg.event.conversationId !== deps.conversationId) {
- return;
- }
- transcript = foldEvent(transcript, msg.event);
- if (transcript.sealedTurnId !== null) {
- void syncTail();
- }
- },
-
- send(text: string): void {
- transcript = appendUserMessage(transcript, text);
- const msg: ChatSendMessage = {
- type: "chat.send",
- conversationId: deps.conversationId,
- message: text,
- ...(_model !== undefined ? { model: _model } : {}),
- };
- deps.transport.send(msg);
- },
-
- setModel(model: string): void {
- _model = model;
- },
-
- async load(): Promise<void> {
- const cached = await deps.cache.load(deps.conversationId);
- if (cached.length > 0) {
- transcript = applyHistory(transcript, cached);
- }
- await syncTail();
- },
-
- dispose(): void {
- disposed = true;
- },
- };
+ let transcript = $state<TranscriptState>(initialState());
+ let metrics = $state<MetricsState>(initialMetricsState());
+ let _pendingSync = $state(false);
+ let _error = $state<string | null>(null);
+ let _model = $state<string | undefined>(deps.model);
+ let disposed = false;
+
+ let chatLimit = normalizeChatLimit(deps.chatLimit);
+
+ /**
+ * Enforce the chat limit after a transcript mutation — unless the injected
+ * gate says the reader is scrolled up (then defer; the next mutation retries
+ * and `trimTranscript` unloads whole quarters to catch up).
+ */
+ function maybeTrim(): void {
+ if (deps.canUnload !== undefined && !deps.canUnload()) return;
+ transcript = trimTranscript(transcript, chatLimit);
+ }
+
+ /**
+ * Pull `seq > cache-cursor` from the server and fold it in. `coldLimit`, when
+ * given AND the cache is empty (a truly fresh browser), windows the fetch to
+ * the newest N chunks (CR-5 `?limit=`) so a huge conversation doesn't ship
+ * whole. It is deliberately NOT applied to a warm-cache tail: windowing a
+ * tail that grew past N while we were away would leave a silent seq GAP
+ * between the cache and the fetched window.
+ */
+ async function syncTail(coldLimit?: number): Promise<void> {
+ if (disposed || _pendingSync) return;
+ _pendingSync = true;
+ try {
+ const since = await deps.cache.sinceSeq(deps.conversationId);
+ const window = since === 0 && coldLimit !== undefined ? { limit: coldLimit } : undefined;
+ const res = await deps.historySync(deps.conversationId, since, window);
+ const merged = await deps.cache.commit(deps.conversationId, res.chunks);
+ transcript = applyHistory(transcript, merged);
+ maybeTrim();
+ _error = null;
+ } catch (err) {
+ _error = err instanceof Error ? err.message : String(err);
+ } finally {
+ _pendingSync = false;
+ }
+ }
+
+ async function syncMetrics(): Promise<void> {
+ if (disposed) return;
+ try {
+ const res = await deps.metricsSync(deps.conversationId);
+ metrics = applyDurableMetrics(metrics, res.turns);
+ } catch (err) {
+ // Metrics fetch failure must not block history sync or throw;
+ // live-folded metrics remain intact. Surface via onError (modal).
+ console.error("[syncMetrics] failed:", err);
+ deps.onError?.("Failed to sync conversation metrics", err);
+ }
+ }
+
+ /**
+ * Fetch up to `want` older chunks (seq < `oldest`) — cache first, then a
+ * CR-5 `?beforeSeq=&limit=` server backfill when the cache is too shallow,
+ * persisting it so the next read is local. Returns every locally-known
+ * chunk older than `oldest` (the caller — `restoreEarlier` — takes the
+ * newest `count` of them). Shared by `showEarlier` and the raise-refill.
+ */
+ async function backfillOlder(oldest: number, want: number): Promise<readonly StoredChunk[]> {
+ let earlier = (await deps.cache.load(deps.conversationId)).filter((c) => c.seq < oldest);
+ const oldestKnown = earlier[0]?.seq ?? oldest;
+ if (earlier.length < want && oldestKnown > 1) {
+ const res = await deps.historySync(deps.conversationId, 0, {
+ beforeSeq: oldestKnown,
+ limit: want - earlier.length,
+ });
+ const merged = await deps.cache.commit(deps.conversationId, res.chunks);
+ earlier = merged.filter((c) => c.seq < oldest);
+ }
+ return earlier;
+ }
+
+ /**
+ * Refill toward the fresh-load window after a limit RAISE: pull older
+ * history (cache first, then server) so the loaded set grows to match what a
+ * fresh `load()` would show at the new limit. No-op when already at the
+ * origin (seq 1) or already within the window. `restoreEarlier` re-derives
+ * the window start at apply time, so a delta landing during the await can't
+ * corrupt the merge. NOT gated (refilling prepends above the viewport; the
+ * caller preserves scroll position).
+ */
+ async function refill(): Promise<void> {
+ if (disposed) return;
+ const oldest = transcript.committed[0]?.seq ?? transcript.hiddenBeforeSeq;
+ if (oldest <= 1) return;
+ const want = initialWindowSize(chatLimit) - transcript.committed.length;
+ if (want <= 0) return;
+ try {
+ const earlier = await backfillOlder(oldest, want);
+ if (earlier.length === 0) return;
+ transcript = restoreEarlier(transcript, earlier, want);
+ _error = null;
+ } catch (err) {
+ _error = err instanceof Error ? err.message : String(err);
+ }
+ }
+
+ return {
+ get messages(): readonly ChatMessage[] {
+ return selectMessages(transcript);
+ },
+ get chunks(): readonly RenderedChunk[] {
+ return selectChunks(transcript);
+ },
+ get turnMetrics(): readonly TurnMetricsEntry[] {
+ return selectOrderedTurnMetrics(metrics);
+ },
+ get currentContextSize(): number | undefined {
+ return selectCurrentContextSize(metrics);
+ },
+ get generating(): boolean {
+ return selectGenerating(transcript);
+ },
+ get providerRetry(): TurnProviderRetryEvent | null {
+ return selectProviderRetry(transcript);
+ },
+ get pendingSync(): boolean {
+ return _pendingSync;
+ },
+ get error(): string | null {
+ return _error;
+ },
+ get model(): string | undefined {
+ return _model;
+ },
+ get hasEarlier(): boolean {
+ return selectHasEarlier(transcript);
+ },
+ get thinkingKeyBase(): number {
+ return transcript.hiddenThinkingCount;
+ },
+
+ handleDelta(msg: ChatDeltaMessage | ChatErrorMessage): void {
+ if (msg.type === "chat.error") {
+ if (msg.conversationId !== undefined && msg.conversationId !== deps.conversationId) {
+ return;
+ }
+ _error = msg.message;
+ return;
+ }
+ if (msg.event.conversationId !== deps.conversationId) {
+ return;
+ }
+ transcript = foldEvent(transcript, msg.event);
+ metrics = foldMetricsEvent(metrics, msg.event);
+ maybeTrim();
+ if (transcript.sealedTurnId !== null) {
+ void syncTail();
+ void syncMetrics();
+ }
+ },
+
+ send(text: string, images?: readonly ImageInput[]): void {
+ transcript = appendUserMessage(transcript, text, images);
+ maybeTrim();
+ const msg: ChatSendMessage = {
+ type: "chat.send",
+ conversationId: deps.conversationId,
+ message: text,
+ ...(_model !== undefined ? { model: _model } : {}),
+ ...(deps.workspaceId !== undefined ? { workspaceId: deps.workspaceId } : {}),
+ ...(images !== undefined && images.length > 0 ? { images: [...images] } : {}),
+ };
+ deps.transport.send(msg);
+ },
+
+ queueMessage(text: string): void {
+ const trimmed = text.trim();
+ if (trimmed.length === 0) return;
+ const msg: ChatQueueMessage = {
+ type: "chat.queue",
+ conversationId: deps.conversationId,
+ text: trimmed,
+ ...(deps.workspaceId !== undefined ? { workspaceId: deps.workspaceId } : {}),
+ };
+ deps.transport.send(msg);
+ },
+
+ setModel(model: string): void {
+ _model = model;
+ },
+
+ async setChatLimit(limit: number): Promise<void> {
+ const prev = chatLimit;
+ chatLimit = normalizeChatLimit(limit);
+ if (chatLimit < prev) {
+ maybeTrim();
+ } else if (chatLimit > prev) {
+ await refill();
+ }
+ },
+
+ async load(): Promise<void> {
+ // Fresh load shows only the newest 75% of the limit — headroom before the
+ // first trim. A warm cache is windowed locally (synchronously with its
+ // apply — no render in between); a COLD cache passes the window to the
+ // server instead (CR-5 `?limit=`), so a huge conversation never ships
+ // whole. The post-sync window re-asserts the cap either way.
+ const windowSize = initialWindowSize(chatLimit);
+ const cached = await deps.cache.load(deps.conversationId);
+ if (cached.length > 0) {
+ transcript = windowTranscript(applyHistory(transcript, cached), windowSize);
+ }
+ await syncTail(windowSize);
+ transcript = windowTranscript(transcript, windowSize);
+ await syncMetrics();
+ },
+
+ async showEarlier(): Promise<void> {
+ if (disposed) return;
+ const oldest = transcript.committed[0]?.seq ?? transcript.hiddenBeforeSeq;
+ if (oldest <= 1) return;
+ const want = unloadCount(chatLimit);
+ try {
+ const earlier = await backfillOlder(oldest, want);
+ transcript = restoreEarlier(transcript, earlier, want);
+ _error = null;
+ } catch (err) {
+ _error = err instanceof Error ? err.message : String(err);
+ }
+ },
+
+ resync(): void {
+ if (disposed) return;
+ // A turn may have sealed while we were disconnected (missed `turn-sealed`):
+ // clear the now-stale spinner BEFORE re-subscribing, so a finished turn
+ // doesn't spin forever. A still-running turn's replay re-asserts it.
+ transcript = clearGenerating(transcript);
+ void syncTail();
+ void syncMetrics();
+ },
+
+ dispose(): void {
+ disposed = true;
+ },
+ };
}
diff --git a/src/features/chat/store.test.ts b/src/features/chat/store.test.ts
index de60b14..8f36994 100644
--- a/src/features/chat/store.test.ts
+++ b/src/features/chat/store.test.ts
@@ -1,497 +1,1636 @@
-import type { AgentEvent, StoredChunk } from "@dispatch/wire";
+import type { AgentEvent, ImageInput, StepId, StoredChunk } from "@dispatch/wire";
import { describe, expect, it, vi } from "vitest";
import { createChatStore } from "./store.svelte";
-import { createFakeCache, createFakeHistorySync, createFakeTransport } from "./test-helpers";
+import {
+ createFakeCache,
+ createFakeHistorySync,
+ createFakeMetricsSync,
+ createFakeTransport,
+} from "./test-helpers";
const CONV_ID = "test-conv-1";
function makeStoredChunk(seq: number, role: "user" | "assistant" = "assistant"): StoredChunk {
- return { seq, role, chunk: { type: "text", text: `chunk-${seq}` } };
+ return { seq, role, chunk: { type: "text", text: `chunk-${seq}` } };
}
function deltaEvent(event: AgentEvent): import("@dispatch/transport-contract").ChatDeltaMessage {
- return { type: "chat.delta", event };
+ return { type: "chat.delta", event };
}
function errorMessage(message: string): import("@dispatch/transport-contract").ChatErrorMessage {
- return { type: "chat.error", message };
+ return { type: "chat.error", message };
}
describe("createChatStore", () => {
- it("folding a chat.delta updates messages", () => {
- const transport = createFakeTransport();
- const historySync = createFakeHistorySync();
- const cache = createFakeCache();
- const store = createChatStore({
- conversationId: CONV_ID,
- transport: transport.impl,
- historySync: historySync.impl,
- cache: cache.impl,
- });
-
- store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
- store.handleDelta(
- deltaEvent({ type: "text-delta", conversationId: CONV_ID, turnId: "t1", delta: "Hello" }),
- );
- store.handleDelta(
- deltaEvent({ type: "text-delta", conversationId: CONV_ID, turnId: "t1", delta: " world" }),
- );
-
- expect(store.messages).toHaveLength(1);
- expect(store.messages[0]?.role).toBe("assistant");
- expect(store.messages[0]?.chunks).toHaveLength(1);
- expect(store.messages[0]?.chunks[0]?.type).toBe("text");
- expect((store.messages[0]?.chunks[0] as { type: "text"; text: string }).text).toBe(
- "Hello world",
- );
-
- store.dispose();
- });
-
- it("turn-sealed triggers a history sync, commits to cache, and applies merged history", async () => {
- const transport = createFakeTransport();
- const historySync = createFakeHistorySync();
- const cache = createFakeCache();
- const store = createChatStore({
- conversationId: CONV_ID,
- transport: transport.impl,
- historySync: historySync.impl,
- cache: cache.impl,
- });
-
- // Set up what the history sync will return
- historySync.returnChunks = [makeStoredChunk(1), makeStoredChunk(2)];
-
- store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
- store.handleDelta(
- deltaEvent({ type: "text-delta", conversationId: CONV_ID, turnId: "t1", delta: "Hi" }),
- );
- store.handleDelta(
- deltaEvent({ type: "done", conversationId: CONV_ID, turnId: "t1", reason: "end-turn" }),
- );
- store.handleDelta(deltaEvent({ type: "turn-sealed", conversationId: CONV_ID, turnId: "t1" }));
-
- // Wait for the async sync to complete
- await vi.waitFor(() => {
- expect(historySync.calls).toHaveLength(1);
- });
-
- expect(historySync.calls[0]?.conversationId).toBe(CONV_ID);
- expect(historySync.calls[0]?.sinceSeq).toBe(0);
-
- // Cache should have the committed chunks
- const cached = await cache.impl.load(CONV_ID);
- expect(cached).toHaveLength(2);
-
- // Messages should include both provisional and committed
- expect(store.messages.length).toBeGreaterThanOrEqual(1);
-
- store.dispose();
- });
-
- it("send posts a chat.send with conversationId", () => {
- const transport = createFakeTransport();
- const historySync = createFakeHistorySync();
- const cache = createFakeCache();
- const store = createChatStore({
- conversationId: CONV_ID,
- transport: transport.impl,
- historySync: historySync.impl,
- cache: cache.impl,
- });
-
- store.send("Hello server");
-
- expect(transport.sent).toHaveLength(1);
- expect(transport.sent[0]?.type).toBe("chat.send");
- expect(transport.sent[0]?.conversationId).toBe(CONV_ID);
- expect(transport.sent[0]?.message).toBe("Hello server");
- expect(transport.sent[0]).not.toHaveProperty("model");
-
- store.dispose();
- });
-
- it("send posts a chat.send with model when set", () => {
- const transport = createFakeTransport();
- const historySync = createFakeHistorySync();
- const cache = createFakeCache();
- const store = createChatStore({
- conversationId: CONV_ID,
- model: "openai/gpt-4",
- transport: transport.impl,
- historySync: historySync.impl,
- cache: cache.impl,
- });
-
- store.send("Hello");
-
- expect(transport.sent).toHaveLength(1);
- expect(transport.sent[0]?.model).toBe("openai/gpt-4");
-
- store.dispose();
- });
-
- it("chat.error sets error", () => {
- const transport = createFakeTransport();
- const historySync = createFakeHistorySync();
- const cache = createFakeCache();
- const store = createChatStore({
- conversationId: CONV_ID,
- transport: transport.impl,
- historySync: historySync.impl,
- cache: cache.impl,
- });
-
- expect(store.error).toBeNull();
-
- store.handleDelta(errorMessage("Something broke"));
-
- expect(store.error).toBe("Something broke");
-
- store.dispose();
- });
-
- it("load hydrates from cache then syncs the tail", async () => {
- const transport = createFakeTransport();
- const historySync = createFakeHistorySync();
- const cache = createFakeCache();
-
- // Pre-populate cache
- await cache.impl.commit(CONV_ID, [makeStoredChunk(1, "user"), makeStoredChunk(2, "assistant")]);
-
- // History sync returns new chunks
- historySync.returnChunks = [makeStoredChunk(3, "assistant")];
-
- const store = createChatStore({
- conversationId: CONV_ID,
- transport: transport.impl,
- historySync: historySync.impl,
- cache: cache.impl,
- });
-
- await store.load();
-
- // Should have synced
- expect(historySync.calls).toHaveLength(1);
- expect(historySync.calls[0]?.sinceSeq).toBe(2);
-
- // Messages should include all chunks
- expect(store.messages.length).toBeGreaterThanOrEqual(2);
-
- store.dispose();
- });
-
- it("load with empty cache still syncs", async () => {
- const transport = createFakeTransport();
- const historySync = createFakeHistorySync();
- const cache = createFakeCache();
-
- historySync.returnChunks = [makeStoredChunk(1, "assistant")];
-
- const store = createChatStore({
- conversationId: CONV_ID,
- transport: transport.impl,
- historySync: historySync.impl,
- cache: cache.impl,
- });
-
- await store.load();
-
- expect(historySync.calls).toHaveLength(1);
- expect(historySync.calls[0]?.sinceSeq).toBe(0);
-
- store.dispose();
- });
-
- it("error is cleared on successful sync", async () => {
- const transport = createFakeTransport();
- const historySync = createFakeHistorySync();
- const cache = createFakeCache();
- const store = createChatStore({
- conversationId: CONV_ID,
- transport: transport.impl,
- historySync: historySync.impl,
- cache: cache.impl,
- });
-
- // First, set an error
- store.handleDelta(errorMessage("fail"));
- expect(store.error).toBe("fail");
-
- // Now trigger a successful sync via turn-sealed
- historySync.returnChunks = [makeStoredChunk(1)];
- store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
- store.handleDelta(
- deltaEvent({ type: "done", conversationId: CONV_ID, turnId: "t1", reason: "end-turn" }),
- );
- store.handleDelta(deltaEvent({ type: "turn-sealed", conversationId: CONV_ID, turnId: "t1" }));
-
- await vi.waitFor(() => {
- expect(store.error).toBeNull();
- });
-
- store.dispose();
- });
-
- it("dispose prevents further syncs", async () => {
- const transport = createFakeTransport();
- const historySync = createFakeHistorySync();
- const cache = createFakeCache();
- const store = createChatStore({
- conversationId: CONV_ID,
- transport: transport.impl,
- historySync: historySync.impl,
- cache: cache.impl,
- });
-
- store.dispose();
-
- // Trigger a turn-sealed after dispose
- store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
- store.handleDelta(deltaEvent({ type: "turn-sealed", conversationId: CONV_ID, turnId: "t1" }));
-
- // Wait a tick to let any async work settle
- await new Promise((r) => setTimeout(r, 10));
-
- // No sync should have happened
- expect(historySync.calls).toHaveLength(0);
-
- store.dispose();
- });
-
- it("overlapping syncs are guarded", async () => {
- const transport = createFakeTransport();
- const _historySync = createFakeHistorySync();
- const cache = createFakeCache();
-
- // Make the first sync slow
- let resolveFirstSync: (() => void) | undefined;
- const firstSyncPromise = new Promise<void>((resolve) => {
- resolveFirstSync = resolve;
- });
-
- let callCount = 0;
- const slowHistorySync: import("./ports").HistorySync = async (_conversationId, sinceSeq) => {
- callCount++;
- if (callCount === 1) {
- await firstSyncPromise;
- }
- return { chunks: [], latestSeq: sinceSeq };
- };
-
- const store = createChatStore({
- conversationId: CONV_ID,
- transport: transport.impl,
- historySync: slowHistorySync,
- cache: cache.impl,
- });
-
- // Trigger first sync
- store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
- store.handleDelta(deltaEvent({ type: "turn-sealed", conversationId: CONV_ID, turnId: "t1" }));
-
- // Wait a tick so the first sync starts
- await new Promise((r) => setTimeout(r, 0));
-
- // Trigger second sync while first is pending
- store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t2" }));
- store.handleDelta(deltaEvent({ type: "turn-sealed", conversationId: CONV_ID, turnId: "t2" }));
-
- // Only one call should have been made (second was guarded)
- expect(callCount).toBe(1);
-
- // Release the first sync
- resolveFirstSync?.();
- await new Promise((r) => setTimeout(r, 10));
-
- store.dispose();
- });
-
- it("handles tool-call and tool-result chunks", () => {
- const transport = createFakeTransport();
- const historySync = createFakeHistorySync();
- const cache = createFakeCache();
- const store = createChatStore({
- conversationId: CONV_ID,
- transport: transport.impl,
- historySync: historySync.impl,
- cache: cache.impl,
- });
-
- store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
- store.handleDelta(
- deltaEvent({
- type: "tool-call",
- conversationId: CONV_ID,
- turnId: "t1",
- toolCallId: "tc1",
- toolName: "read_file",
- input: { path: "/tmp/test.txt" },
- }),
- );
- store.handleDelta(
- deltaEvent({
- type: "tool-result",
- conversationId: CONV_ID,
- turnId: "t1",
- toolCallId: "tc1",
- toolName: "read_file",
- content: "file contents",
- isError: false,
- }),
- );
-
- expect(store.chunks).toHaveLength(2);
- expect(store.chunks[0]?.chunk.type).toBe("tool-call");
- expect(store.chunks[1]?.chunk.type).toBe("tool-result");
-
- store.dispose();
- });
-
- it("setModel changes the model used by the next send", () => {
- const transport = createFakeTransport();
- const historySync = createFakeHistorySync();
- const cache = createFakeCache();
- const store = createChatStore({
- conversationId: CONV_ID,
- model: "openai/gpt-4",
- transport: transport.impl,
- historySync: historySync.impl,
- cache: cache.impl,
- });
-
- store.send("First");
- expect(transport.sent[0]?.model).toBe("openai/gpt-4");
-
- store.setModel("anthropic/claude-3");
- store.send("Second");
- expect(transport.sent[1]?.model).toBe("anthropic/claude-3");
-
- store.dispose();
- });
-
- it("setModel from undefined to a model", () => {
- const transport = createFakeTransport();
- const historySync = createFakeHistorySync();
- const cache = createFakeCache();
- const store = createChatStore({
- conversationId: CONV_ID,
- transport: transport.impl,
- historySync: historySync.impl,
- cache: cache.impl,
- });
-
- store.send("First");
- expect(transport.sent[0]).not.toHaveProperty("model");
-
- store.setModel("openai/gpt-4o");
- store.send("Second");
- expect(transport.sent[1]?.model).toBe("openai/gpt-4o");
-
- store.dispose();
- });
-
- it("handleDelta ignores a chat.delta for a different conversationId", () => {
- const transport = createFakeTransport();
- const historySync = createFakeHistorySync();
- const cache = createFakeCache();
- const store = createChatStore({
- conversationId: CONV_ID,
- transport: transport.impl,
- historySync: historySync.impl,
- cache: cache.impl,
- });
-
- store.handleDelta(
- deltaEvent({ type: "turn-start", conversationId: "other-conv", turnId: "t1" }),
- );
- store.handleDelta(
- deltaEvent({
- type: "text-delta",
- conversationId: "other-conv",
- turnId: "t1",
- delta: "Should be ignored",
- }),
- );
-
- expect(store.messages).toHaveLength(0);
-
- store.dispose();
- });
-
- it("handleDelta ignores a chat.error for a different conversationId", () => {
- const transport = createFakeTransport();
- const historySync = createFakeHistorySync();
- const cache = createFakeCache();
- const store = createChatStore({
- conversationId: CONV_ID,
- transport: transport.impl,
- historySync: historySync.impl,
- cache: cache.impl,
- });
-
- store.handleDelta({ type: "chat.error", conversationId: "other-conv", message: "Wrong conv" });
-
- expect(store.error).toBeNull();
-
- store.dispose();
- });
-
- it("send optimistically shows the user message immediately", () => {
- const transport = createFakeTransport();
- const historySync = createFakeHistorySync();
- const cache = createFakeCache();
- const store = createChatStore({
- conversationId: CONV_ID,
- transport: transport.impl,
- historySync: historySync.impl,
- cache: cache.impl,
- });
-
- store.send("hi");
-
- expect(store.messages).toHaveLength(1);
- expect(store.messages[0]?.role).toBe("user");
- expect(store.messages[0]?.chunks).toHaveLength(1);
- expect(store.messages[0]?.chunks[0]?.type).toBe("text");
- expect((store.messages[0]?.chunks[0] as { type: "text"; text: string }).text).toBe("hi");
-
- store.dispose();
- });
-
- it("the optimistic user message is replaced after turn-sealed + history sync", async () => {
- const transport = createFakeTransport();
- const historySync = createFakeHistorySync();
- const cache = createFakeCache();
- const store = createChatStore({
- conversationId: CONV_ID,
- transport: transport.impl,
- historySync: historySync.impl,
- cache: cache.impl,
- });
-
- historySync.returnChunks = [
- { seq: 1, role: "user", chunk: { type: "text", text: "hi" } },
- { seq: 2, role: "assistant", chunk: { type: "text", text: "hello!" } },
- ];
-
- store.send("hi");
- expect(store.messages).toHaveLength(1);
- expect(store.messages[0]?.role).toBe("user");
-
- store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
- store.handleDelta(
- deltaEvent({ type: "text-delta", conversationId: CONV_ID, turnId: "t1", delta: "hello!" }),
- );
- store.handleDelta(deltaEvent({ type: "turn-sealed", conversationId: CONV_ID, turnId: "t1" }));
-
- await vi.waitFor(() => {
- expect(store.messages.length).toBe(2);
- });
-
- expect(store.messages[0]?.role).toBe("user");
- expect(store.messages[1]?.role).toBe("assistant");
-
- store.dispose();
- });
+ it("folding a chat.delta updates messages", () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
+ store.handleDelta(
+ deltaEvent({ type: "text-delta", conversationId: CONV_ID, turnId: "t1", delta: "Hello" }),
+ );
+ store.handleDelta(
+ deltaEvent({ type: "text-delta", conversationId: CONV_ID, turnId: "t1", delta: " world" }),
+ );
+
+ expect(store.messages).toHaveLength(1);
+ expect(store.messages[0]?.role).toBe("assistant");
+ expect(store.messages[0]?.chunks).toHaveLength(1);
+ expect(store.messages[0]?.chunks[0]?.type).toBe("text");
+ expect((store.messages[0]?.chunks[0] as { type: "text"; text: string }).text).toBe(
+ "Hello world",
+ );
+
+ store.dispose();
+ });
+
+ it("turn-sealed triggers a history sync, commits to cache, and applies merged history", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ // Set up what the history sync will return
+ historySync.returnChunks = [makeStoredChunk(1), makeStoredChunk(2)];
+
+ store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
+ store.handleDelta(
+ deltaEvent({ type: "text-delta", conversationId: CONV_ID, turnId: "t1", delta: "Hi" }),
+ );
+ store.handleDelta(
+ deltaEvent({ type: "done", conversationId: CONV_ID, turnId: "t1", reason: "end-turn" }),
+ );
+ store.handleDelta(deltaEvent({ type: "turn-sealed", conversationId: CONV_ID, turnId: "t1" }));
+
+ // Wait for the async sync to complete
+ await vi.waitFor(() => {
+ expect(historySync.calls).toHaveLength(1);
+ });
+
+ expect(historySync.calls[0]?.conversationId).toBe(CONV_ID);
+ expect(historySync.calls[0]?.sinceSeq).toBe(0);
+
+ // Cache should have the committed chunks
+ const cached = await cache.impl.load(CONV_ID);
+ expect(cached).toHaveLength(2);
+
+ // Messages should include both provisional and committed
+ expect(store.messages.length).toBeGreaterThanOrEqual(1);
+
+ store.dispose();
+ });
+
+ it("send posts a chat.send with conversationId", () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ store.send("Hello server");
+
+ expect(transport.sent).toHaveLength(1);
+ expect(transport.sent[0]?.type).toBe("chat.send");
+ expect(transport.sent[0]?.conversationId).toBe(CONV_ID);
+ expect(transport.sent[0]?.message).toBe("Hello server");
+ expect(transport.sent[0]).not.toHaveProperty("model");
+
+ store.dispose();
+ });
+
+ it("send posts a chat.send with model when set", () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ model: "openai/gpt-4",
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ store.send("Hello");
+
+ expect(transport.sent).toHaveLength(1);
+ expect(transport.sent[0]?.model).toBe("openai/gpt-4");
+
+ store.dispose();
+ });
+
+ it("send forwards staged images on chat.send and echoes them provisionally", () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ const images: ImageInput[] = [
+ { url: "data:image/png;base64,AAAA", mimeType: "image/png" },
+ { url: "https://example.com/cat.jpg" },
+ ];
+ store.send("look at this", images);
+
+ expect(transport.sent).toHaveLength(1);
+ const msg = transport.sent[0];
+ expect(msg?.type).toBe("chat.send");
+ expect(msg?.message).toBe("look at this");
+ expect(msg?.images).toEqual(images);
+
+ // Optimistic echo: a text chunk + two image chunks, provisional.
+ const chunks = store.chunks;
+ expect(chunks).toHaveLength(3);
+ expect(chunks[0]?.chunk).toEqual({ type: "text", text: "look at this" });
+ expect(chunks[1]?.chunk).toEqual({ type: "image", url: images[0]?.url, mimeType: "image/png" });
+ expect(chunks[2]?.chunk).toEqual({ type: "image", url: images[1]?.url });
+
+ store.dispose();
+ });
+
+ it("send omits images on the wire when none are staged (backward compatible)", () => {
+ const transport = createFakeTransport();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: createFakeHistorySync().impl,
+ metricsSync: createFakeMetricsSync().impl,
+ cache: createFakeCache().impl,
+ });
+
+ store.send("just text");
+
+ expect(transport.sent[0]).not.toHaveProperty("images");
+ store.dispose();
+ });
+
+ it("send omits images on the wire for an empty array", () => {
+ const transport = createFakeTransport();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: createFakeHistorySync().impl,
+ metricsSync: createFakeMetricsSync().impl,
+ cache: createFakeCache().impl,
+ });
+
+ store.send("just text", []);
+
+ expect(transport.sent[0]).not.toHaveProperty("images");
+ store.dispose();
+ });
+
+ it("send allows an images-only message (empty text)", () => {
+ const transport = createFakeTransport();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: createFakeHistorySync().impl,
+ metricsSync: createFakeMetricsSync().impl,
+ cache: createFakeCache().impl,
+ });
+
+ store.send("", [{ url: "data:image/png;base64,AAAA", mimeType: "image/png" }]);
+
+ expect(transport.sent[0]?.message).toBe("");
+ expect(transport.sent[0]?.images).toHaveLength(1);
+ // The echo is image-only (no text chunk).
+ expect(store.chunks).toHaveLength(1);
+ expect(store.chunks[0]?.chunk.type).toBe("image");
+ store.dispose();
+ });
+
+ describe("queueMessage (chat.queue — steering)", () => {
+ it("posts a chat.queue with conversationId + text", () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ store.queueMessage("steer left");
+
+ expect(transport.sent).toHaveLength(0); // chat.send stays empty
+ expect(transport.sentQueue).toHaveLength(1);
+ expect(transport.sentQueue[0]?.type).toBe("chat.queue");
+ expect(transport.sentQueue[0]?.conversationId).toBe(CONV_ID);
+ expect(transport.sentQueue[0]?.text).toBe("steer left");
+
+ store.dispose();
+ });
+
+ it("trims whitespace before sending", () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ store.queueMessage(" padded ");
+
+ expect(transport.sentQueue[0]?.text).toBe("padded");
+
+ store.dispose();
+ });
+
+ it("does not send for empty/whitespace-only text", () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ store.queueMessage(" ");
+ store.queueMessage("");
+
+ expect(transport.sentQueue).toHaveLength(0);
+
+ store.dispose();
+ });
+
+ it("does NOT optimistically echo into the transcript (the surface carries the queue)", () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ store.queueMessage("queued steering message");
+
+ expect(store.chunks).toHaveLength(0); // no transcript echo
+
+ store.dispose();
+ });
+ });
+
+ it("chat.error sets error", () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ expect(store.error).toBeNull();
+
+ store.handleDelta(errorMessage("Something broke"));
+
+ expect(store.error).toBe("Something broke");
+
+ store.dispose();
+ });
+
+ it("load hydrates from cache then syncs the tail", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+
+ // Pre-populate cache
+ await cache.impl.commit(CONV_ID, [makeStoredChunk(1, "user"), makeStoredChunk(2, "assistant")]);
+
+ // History sync returns new chunks
+ historySync.returnChunks = [makeStoredChunk(3, "assistant")];
+
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ await store.load();
+
+ // Should have synced
+ expect(historySync.calls).toHaveLength(1);
+ expect(historySync.calls[0]?.sinceSeq).toBe(2);
+
+ // Messages should include all chunks
+ expect(store.messages.length).toBeGreaterThanOrEqual(2);
+
+ store.dispose();
+ });
+
+ it("load with empty cache still syncs", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+
+ historySync.returnChunks = [makeStoredChunk(1, "assistant")];
+
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ await store.load();
+
+ expect(historySync.calls).toHaveLength(1);
+ expect(historySync.calls[0]?.sinceSeq).toBe(0);
+
+ store.dispose();
+ });
+
+ it("error is cleared on successful sync", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ // First, set an error
+ store.handleDelta(errorMessage("fail"));
+ expect(store.error).toBe("fail");
+
+ // Now trigger a successful sync via turn-sealed
+ historySync.returnChunks = [makeStoredChunk(1)];
+ store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
+ store.handleDelta(
+ deltaEvent({ type: "done", conversationId: CONV_ID, turnId: "t1", reason: "end-turn" }),
+ );
+ store.handleDelta(deltaEvent({ type: "turn-sealed", conversationId: CONV_ID, turnId: "t1" }));
+
+ await vi.waitFor(() => {
+ expect(store.error).toBeNull();
+ });
+
+ store.dispose();
+ });
+
+ it("dispose prevents further syncs", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ store.dispose();
+
+ // Trigger a turn-sealed after dispose
+ store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
+ store.handleDelta(deltaEvent({ type: "turn-sealed", conversationId: CONV_ID, turnId: "t1" }));
+
+ // Wait a tick to let any async work settle
+ await new Promise((r) => setTimeout(r, 10));
+
+ // No sync should have happened
+ expect(historySync.calls).toHaveLength(0);
+
+ store.dispose();
+ });
+
+ it("overlapping syncs are guarded", async () => {
+ const transport = createFakeTransport();
+ const _historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+
+ // Make the first sync slow
+ let resolveFirstSync: (() => void) | undefined;
+ const firstSyncPromise = new Promise<void>((resolve) => {
+ resolveFirstSync = resolve;
+ });
+
+ let callCount = 0;
+ const slowHistorySync: import("./ports").HistorySync = async (_conversationId, sinceSeq) => {
+ callCount++;
+ if (callCount === 1) {
+ await firstSyncPromise;
+ }
+ return { chunks: [], latestSeq: sinceSeq };
+ };
+
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: slowHistorySync,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ // Trigger first sync
+ store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
+ store.handleDelta(deltaEvent({ type: "turn-sealed", conversationId: CONV_ID, turnId: "t1" }));
+
+ // Wait a tick so the first sync starts
+ await new Promise((r) => setTimeout(r, 0));
+
+ // Trigger second sync while first is pending
+ store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t2" }));
+ store.handleDelta(deltaEvent({ type: "turn-sealed", conversationId: CONV_ID, turnId: "t2" }));
+
+ // Only one call should have been made (second was guarded)
+ expect(callCount).toBe(1);
+
+ // Release the first sync
+ resolveFirstSync?.();
+ await new Promise((r) => setTimeout(r, 10));
+
+ store.dispose();
+ });
+
+ it("handles tool-call and tool-result chunks", () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
+ store.handleDelta(
+ deltaEvent({
+ type: "tool-call",
+ conversationId: CONV_ID,
+ turnId: "t1",
+ toolCallId: "tc1",
+ toolName: "read_file",
+ input: { path: "/tmp/test.txt" },
+ stepId: "t1#0" as StepId,
+ }),
+ );
+ store.handleDelta(
+ deltaEvent({
+ type: "tool-result",
+ conversationId: CONV_ID,
+ turnId: "t1",
+ toolCallId: "tc1",
+ toolName: "read_file",
+ content: "file contents",
+ isError: false,
+ stepId: "t1#0" as StepId,
+ }),
+ );
+
+ expect(store.chunks).toHaveLength(2);
+ expect(store.chunks[0]?.chunk.type).toBe("tool-call");
+ expect(store.chunks[1]?.chunk.type).toBe("tool-result");
+
+ store.dispose();
+ });
+
+ it("setModel changes the model used by the next send", () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ model: "openai/gpt-4",
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ store.send("First");
+ expect(transport.sent[0]?.model).toBe("openai/gpt-4");
+
+ store.setModel("anthropic/claude-3");
+ store.send("Second");
+ expect(transport.sent[1]?.model).toBe("anthropic/claude-3");
+
+ store.dispose();
+ });
+
+ it("setModel from undefined to a model", () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ store.send("First");
+ expect(transport.sent[0]).not.toHaveProperty("model");
+
+ store.setModel("openai/gpt-4o");
+ store.send("Second");
+ expect(transport.sent[1]?.model).toBe("openai/gpt-4o");
+
+ store.dispose();
+ });
+
+ it("handleDelta ignores a chat.delta for a different conversationId", () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ store.handleDelta(
+ deltaEvent({ type: "turn-start", conversationId: "other-conv", turnId: "t1" }),
+ );
+ store.handleDelta(
+ deltaEvent({
+ type: "text-delta",
+ conversationId: "other-conv",
+ turnId: "t1",
+ delta: "Should be ignored",
+ }),
+ );
+
+ expect(store.messages).toHaveLength(0);
+
+ store.dispose();
+ });
+
+ it("handleDelta ignores a chat.error for a different conversationId", () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ store.handleDelta({ type: "chat.error", conversationId: "other-conv", message: "Wrong conv" });
+
+ expect(store.error).toBeNull();
+
+ store.dispose();
+ });
+
+ it("send optimistically shows the user message immediately", () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ store.send("hi");
+
+ expect(store.messages).toHaveLength(1);
+ expect(store.messages[0]?.role).toBe("user");
+ expect(store.messages[0]?.chunks).toHaveLength(1);
+ expect(store.messages[0]?.chunks[0]?.type).toBe("text");
+ expect((store.messages[0]?.chunks[0] as { type: "text"; text: string }).text).toBe("hi");
+
+ store.dispose();
+ });
+
+ it("the optimistic user message is replaced after turn-sealed + history sync", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ historySync.returnChunks = [
+ { seq: 1, role: "user", chunk: { type: "text", text: "hi" } },
+ { seq: 2, role: "assistant", chunk: { type: "text", text: "hello!" } },
+ ];
+
+ store.send("hi");
+ expect(store.messages).toHaveLength(1);
+ expect(store.messages[0]?.role).toBe("user");
+
+ store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
+ store.handleDelta(
+ deltaEvent({ type: "text-delta", conversationId: CONV_ID, turnId: "t1", delta: "hello!" }),
+ );
+ store.handleDelta(deltaEvent({ type: "turn-sealed", conversationId: CONV_ID, turnId: "t1" }));
+
+ await vi.waitFor(() => {
+ expect(store.messages.length).toBe(2);
+ });
+
+ expect(store.messages[0]?.role).toBe("user");
+ expect(store.messages[1]?.role).toBe("assistant");
+
+ store.dispose();
+ });
+
+ it("folding usage/step-complete/done deltas exposes turnMetrics", () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ expect(store.turnMetrics).toHaveLength(0);
+
+ store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
+ store.handleDelta(
+ deltaEvent({
+ type: "usage",
+ conversationId: CONV_ID,
+ turnId: "t1",
+ stepId: "t1#0" as StepId,
+ usage: { inputTokens: 100, outputTokens: 50 },
+ }),
+ );
+ store.handleDelta(
+ deltaEvent({
+ type: "step-complete",
+ conversationId: CONV_ID,
+ turnId: "t1",
+ stepId: "t1#0" as StepId,
+ ttftMs: 200,
+ genTotalMs: 800,
+ }),
+ );
+ store.handleDelta(
+ deltaEvent({
+ type: "done",
+ conversationId: CONV_ID,
+ turnId: "t1",
+ reason: "end-turn",
+ durationMs: 1200,
+ usage: { inputTokens: 100, outputTokens: 50 },
+ }),
+ );
+
+ expect(store.turnMetrics).toHaveLength(1);
+ const entry = store.turnMetrics[0];
+ expect(entry?.turnId).toBe("t1");
+ expect(entry?.steps).toHaveLength(1);
+ expect(entry?.steps[0]?.stepId).toBe("t1#0" as StepId);
+ expect(entry?.steps[0]?.usage.inputTokens).toBe(100);
+ expect(entry?.steps[0]?.genTotalMs).toBe(800);
+ expect(entry?.total).not.toBeNull();
+ expect(entry?.total?.usage.inputTokens).toBe(100);
+ expect(entry?.total?.usage.outputTokens).toBe(50);
+ expect(entry?.total?.durationMs).toBe(1200);
+
+ store.dispose();
+ });
+
+ it("turnMetrics entry has total: null before done (progressive turn)", () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
+ store.handleDelta(
+ deltaEvent({
+ type: "usage",
+ conversationId: CONV_ID,
+ turnId: "t1",
+ stepId: "t1#0" as StepId,
+ usage: { inputTokens: 100, outputTokens: 50 },
+ }),
+ );
+ store.handleDelta(
+ deltaEvent({
+ type: "step-complete",
+ conversationId: CONV_ID,
+ turnId: "t1",
+ stepId: "t1#0" as StepId,
+ ttftMs: 200,
+ genTotalMs: 800,
+ }),
+ );
+
+ expect(store.turnMetrics).toHaveLength(1);
+ const entry = store.turnMetrics[0];
+ expect(entry?.turnId).toBe("t1");
+ expect(entry?.steps).toHaveLength(1);
+ expect(entry?.steps[0]?.stepId).toBe("t1#0" as StepId);
+ expect(entry?.total).toBeNull();
+
+ store.dispose();
+ });
+
+ it("metricsSync durable result overrides live by turnId", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ // Live fold gives some metrics
+ store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
+ store.handleDelta(
+ deltaEvent({
+ type: "usage",
+ conversationId: CONV_ID,
+ turnId: "t1",
+ stepId: "t1#0" as StepId,
+ usage: { inputTokens: 100, outputTokens: 50 },
+ }),
+ );
+ store.handleDelta(
+ deltaEvent({
+ type: "done",
+ conversationId: CONV_ID,
+ turnId: "t1",
+ reason: "end-turn",
+ usage: { inputTokens: 100, outputTokens: 50 },
+ }),
+ );
+
+ expect(store.turnMetrics).toHaveLength(1);
+ expect(store.turnMetrics[0]?.total?.usage.outputTokens).toBe(50);
+
+ // Durable sync returns different numbers for the same turnId
+ metricsSync.returnTurns = [
+ {
+ turnId: "t1",
+ usage: { inputTokens: 200, outputTokens: 80 },
+ durationMs: 500,
+ steps: [
+ {
+ stepId: "t1#0" as StepId,
+ usage: { inputTokens: 200, outputTokens: 80 },
+ genTotalMs: 400,
+ },
+ ],
+ },
+ ];
+
+ // Trigger metrics sync via turn-sealed
+ historySync.returnChunks = [];
+ store.handleDelta(deltaEvent({ type: "turn-sealed", conversationId: CONV_ID, turnId: "t1" }));
+
+ await vi.waitFor(() => {
+ expect(metricsSync.calls).toHaveLength(1);
+ });
+
+ // Durable should now override live (syncMetrics is async, wait for it)
+ await vi.waitFor(() => {
+ expect(store.turnMetrics[0]?.total?.usage.outputTokens).toBe(80);
+ });
+
+ expect(store.turnMetrics).toHaveLength(1);
+ expect(store.turnMetrics[0]?.total?.durationMs).toBe(500);
+
+ store.dispose();
+ });
+
+ it("rejected metricsSync leaves live metrics intact and does not throw", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ // Live fold some metrics
+ store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
+ store.handleDelta(
+ deltaEvent({
+ type: "usage",
+ conversationId: CONV_ID,
+ turnId: "t1",
+ stepId: "t1#0" as StepId,
+ usage: { inputTokens: 100, outputTokens: 50 },
+ }),
+ );
+ store.handleDelta(
+ deltaEvent({
+ type: "done",
+ conversationId: CONV_ID,
+ turnId: "t1",
+ reason: "end-turn",
+ usage: { inputTokens: 100, outputTokens: 50 },
+ }),
+ );
+
+ expect(store.turnMetrics).toHaveLength(1);
+
+ // Make the metrics sync reject
+ metricsSync.nextError = "metrics endpoint unavailable";
+
+ historySync.returnChunks = [];
+ store.handleDelta(deltaEvent({ type: "turn-sealed", conversationId: CONV_ID, turnId: "t1" }));
+
+ await vi.waitFor(() => {
+ expect(metricsSync.calls).toHaveLength(1);
+ });
+
+ // Live metrics should still be intact
+ expect(store.turnMetrics).toHaveLength(1);
+ expect(store.turnMetrics[0]?.total?.usage.outputTokens).toBe(50);
+
+ // No error should have been thrown to the store
+ expect(store.error).toBeNull();
+
+ store.dispose();
+ });
+
+ it("load calls metricsSync after history sync", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+
+ metricsSync.returnTurns = [
+ {
+ turnId: "t1",
+ usage: { inputTokens: 300, outputTokens: 100 },
+ durationMs: 900,
+ steps: [],
+ },
+ ];
+
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ await store.load();
+
+ expect(historySync.calls).toHaveLength(1);
+ expect(metricsSync.calls).toHaveLength(1);
+ expect(metricsSync.calls[0]).toBe(CONV_ID);
+ expect(store.turnMetrics).toHaveLength(1);
+ expect(store.turnMetrics[0]?.total?.usage.inputTokens).toBe(300);
+
+ store.dispose();
+ });
+
+ it("generating reflects the turn lifecycle (idle → running → idle)", () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ expect(store.generating).toBe(false);
+
+ store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
+ expect(store.generating).toBe(true);
+
+ store.handleDelta(
+ deltaEvent({ type: "text-delta", conversationId: CONV_ID, turnId: "t1", delta: "hi" }),
+ );
+ expect(store.generating).toBe(true);
+
+ store.handleDelta(
+ deltaEvent({ type: "done", conversationId: CONV_ID, turnId: "t1", reason: "end-turn" }),
+ );
+ expect(store.generating).toBe(false);
+
+ store.dispose();
+ });
+
+ it("generating lights up for a watcher whose turn was replayed (no send first)", () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ // A late-joiner receives the in-flight turn replayed from turn-start.
+ store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
+ store.handleDelta(
+ deltaEvent({ type: "text-delta", conversationId: CONV_ID, turnId: "t1", delta: "partial" }),
+ );
+ expect(store.generating).toBe(true);
+ expect(transport.sent).toHaveLength(0); // it never sent — it's just watching
+
+ store.dispose();
+ });
+
+ it("resync clears a stale generating flag and re-syncs history + metrics", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ // Disconnected mid-turn: turn-start seen, but the live done/turn-sealed was
+ // missed, so generating is stuck true.
+ store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
+ expect(store.generating).toBe(true);
+
+ // The turn actually sealed while we were gone — history now has the chunks.
+ historySync.returnChunks = [makeStoredChunk(1), makeStoredChunk(2)];
+
+ store.resync();
+
+ // Generating is cleared synchronously (a finished turn must not spin forever).
+ expect(store.generating).toBe(false);
+
+ await vi.waitFor(() => {
+ expect(historySync.calls).toHaveLength(1);
+ expect(metricsSync.calls).toHaveLength(1);
+ });
+
+ store.dispose();
+ });
+
+ it("chat limit: crossing the limit unloads the oldest quarter in one bulk pass", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ chatLimit: 100,
+ });
+
+ // Commit exactly 100 chunks via a sealed turn (at the limit — no trim).
+ const hundred = Array.from({ length: 100 }, (_, i) => makeStoredChunk(i + 1));
+ historySync.returnChunks = hundred;
+ store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
+ store.handleDelta(deltaEvent({ type: "turn-sealed", conversationId: CONV_ID, turnId: "t1" }));
+ await vi.waitFor(() => {
+ expect(store.chunks).toHaveLength(100);
+ });
+ expect(store.hasEarlier).toBe(false);
+
+ // The 101st chunk (a live tool-call) crosses the limit → 25 unload → 76 remain.
+ store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t2" }));
+ store.handleDelta(
+ deltaEvent({
+ type: "tool-call",
+ conversationId: CONV_ID,
+ turnId: "t2",
+ toolCallId: "tc1",
+ toolName: "probe",
+ input: {},
+ stepId: "t2#0" as StepId,
+ }),
+ );
+
+ expect(store.chunks).toHaveLength(76);
+ expect(store.chunks[0]?.seq).toBe(26);
+ expect(store.hasEarlier).toBe(true);
+
+ store.dispose();
+ });
+
+ it("chat limit: unloading is deferred while the gate is closed, then catches up", () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ let atBottom = false; // reader scrolled up
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ chatLimit: 10,
+ canUnload: () => atBottom,
+ });
+
+ // 15 live tool-calls: over the limit, but the gate defers every trim.
+ store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
+ for (let i = 0; i < 15; i++) {
+ store.handleDelta(
+ deltaEvent({
+ type: "tool-call",
+ conversationId: CONV_ID,
+ turnId: "t1",
+ toolCallId: `tc${i}`,
+ toolName: "probe",
+ input: {},
+ stepId: `t1#${i}` as StepId,
+ }),
+ );
+ }
+ expect(store.chunks).toHaveLength(15);
+
+ // Reader returns to the bottom — the deferred trim now catches up.
+ // With no committed chunks, it drops the oldest provisional chunks
+ // (the in-flight turn) to stay within the limit.
+ atBottom = true;
+ store.handleDelta(
+ deltaEvent({
+ type: "tool-call",
+ conversationId: CONV_ID,
+ turnId: "t1",
+ toolCallId: "tc15",
+ toolName: "probe",
+ input: {},
+ stepId: "t1#15" as StepId,
+ }),
+ );
+ // 16 provisional, limit 10, quarter 3 → drop 6 oldest → 10 remain.
+ expect(store.chunks).toHaveLength(10);
+
+ store.dispose();
+ });
+
+ it("chat limit: a deferred trim catches up across committed history once the gate opens", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ let atBottom = false;
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ chatLimit: 100,
+ canUnload: () => atBottom,
+ });
+
+ // Seal a turn committing 130 chunks while the reader is scrolled up: no trim.
+ historySync.returnChunks = Array.from({ length: 130 }, (_, i) => makeStoredChunk(i + 1));
+ store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
+ store.handleDelta(deltaEvent({ type: "turn-sealed", conversationId: CONV_ID, turnId: "t1" }));
+ await vi.waitFor(() => {
+ expect(store.chunks).toHaveLength(130);
+ });
+
+ // Back at the bottom: the next fold trims whole quarters down to ≤ 100.
+ atBottom = true;
+ store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t2" }));
+ // 130 → 2 quarters of 25 → 80 committed (turn-start adds no chunk).
+ expect(store.chunks).toHaveLength(80);
+ expect(store.chunks[0]?.seq).toBe(51);
+
+ store.dispose();
+ });
+
+ it("chat limit: load windows a long cached conversation to 75% of the limit", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ await cache.impl.commit(
+ CONV_ID,
+ Array.from({ length: 500 }, (_, i) => makeStoredChunk(i + 1)),
+ );
+
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ chatLimit: 100,
+ });
+
+ await store.load();
+
+ // floor(100 × 0.75) = 75 newest chunks: seqs 426..500.
+ expect(store.chunks).toHaveLength(75);
+ expect(store.chunks[0]?.seq).toBe(426);
+ expect(store.hasEarlier).toBe(true);
+ // The tail sync still used the cache's real cursor (not the window's edge).
+ expect(historySync.calls[0]?.sinceSeq).toBe(500);
+
+ store.dispose();
+ });
+
+ it("chat limit: a cold cache (fresh browser) asks the SERVER for the 75% window (CR-5 ?limit=)", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ // The server holds 500 chunks; the windowed fetch returns the newest 75.
+ historySync.returnChunks = Array.from({ length: 500 }, (_, i) => makeStoredChunk(i + 1));
+
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ chatLimit: 100,
+ });
+
+ await store.load();
+
+ // The cold-cache initial sync carried the window (`?sinceSeq=0&limit=75`).
+ expect(historySync.calls[0]?.sinceSeq).toBe(0);
+ expect(historySync.calls[0]?.window).toEqual({ limit: 75 });
+
+ expect(store.chunks).toHaveLength(75);
+ expect(store.chunks[0]?.seq).toBe(426);
+ // hasEarlier derives from the 1-based gap-free seq contract (426 > 1) —
+ // no local watermark was ever set.
+ expect(store.hasEarlier).toBe(true);
+ // Only the window was shipped + cached (the point of CR-5).
+ const cached = await cache.impl.load(CONV_ID);
+ expect(cached).toHaveLength(75);
+
+ store.dispose();
+ });
+
+ it("chat limit: a warm cache syncs the tail UNWINDOWED (no seq gap behind the cache)", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ await cache.impl.commit(CONV_ID, [makeStoredChunk(1), makeStoredChunk(2)]);
+ historySync.returnChunks = [makeStoredChunk(3)];
+
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ chatLimit: 100,
+ });
+
+ await store.load();
+
+ expect(historySync.calls[0]?.sinceSeq).toBe(2);
+ expect(historySync.calls[0]?.window).toBeUndefined();
+
+ store.dispose();
+ });
+
+ it("chat limit: showEarlier backfills from the server when the cache is too shallow (CR-5 ?beforeSeq=)", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ historySync.returnChunks = Array.from({ length: 500 }, (_, i) => makeStoredChunk(i + 1));
+
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ chatLimit: 100,
+ });
+
+ await store.load(); // server-windowed: loaded + cached = 426..500
+ expect(store.chunks[0]?.seq).toBe(426);
+
+ await store.showEarlier();
+
+ // Nothing below 426 was cached → fetched the missing run from the server.
+ const backfill = historySync.calls[1];
+ expect(backfill?.window).toEqual({ beforeSeq: 426, limit: 25 });
+ expect(store.chunks).toHaveLength(100);
+ expect(store.chunks[0]?.seq).toBe(401);
+ expect(store.hasEarlier).toBe(true);
+ // The backfilled run is persisted: the NEXT page-in is cache-local.
+ const cached = await cache.impl.load(CONV_ID);
+ expect(cached).toHaveLength(100);
+
+ store.dispose();
+ });
+
+ it("chat limit: showEarlier pages a quarter back in from the cache", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ await cache.impl.commit(
+ CONV_ID,
+ Array.from({ length: 500 }, (_, i) => makeStoredChunk(i + 1)),
+ );
+
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ chatLimit: 100,
+ });
+
+ await store.load();
+ expect(store.chunks[0]?.seq).toBe(426);
+
+ await store.showEarlier(); // +ceil(100/4) = 25 older chunks
+ expect(store.chunks).toHaveLength(100);
+ expect(store.chunks[0]?.seq).toBe(401);
+ expect(store.hasEarlier).toBe(true);
+ // The cache reached deep enough — no server backfill was needed.
+ expect(historySync.calls).toHaveLength(1);
+
+ store.dispose();
+ });
+
+ it("chat limit: showEarlier clears hasEarlier when the cache is exhausted", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ await cache.impl.commit(
+ CONV_ID,
+ Array.from({ length: 80 }, (_, i) => makeStoredChunk(i + 1)),
+ );
+
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ chatLimit: 100,
+ });
+
+ await store.load(); // window 75: hidden 1..5
+ expect(store.chunks).toHaveLength(75);
+ expect(store.hasEarlier).toBe(true);
+
+ await store.showEarlier(); // restores all 5 → nothing left below
+ expect(store.chunks).toHaveLength(80);
+ expect(store.chunks[0]?.seq).toBe(1);
+ expect(store.hasEarlier).toBe(false);
+
+ store.dispose();
+ });
+
+ it("chat limit: a post-trim history sync does not resurrect unloaded chunks", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ await cache.impl.commit(
+ CONV_ID,
+ Array.from({ length: 500 }, (_, i) => makeStoredChunk(i + 1)),
+ );
+
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ chatLimit: 100,
+ });
+
+ await store.load();
+ expect(store.chunks[0]?.seq).toBe(426);
+
+ // A sealed turn triggers syncTail, whose cache.commit returns the FULL
+ // merged cache (seqs 1..501) — the watermark must keep 1..425 out.
+ historySync.returnChunks = [makeStoredChunk(501)];
+ store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t9" }));
+ store.handleDelta(deltaEvent({ type: "turn-sealed", conversationId: CONV_ID, turnId: "t9" }));
+
+ await vi.waitFor(() => {
+ expect(store.chunks[store.chunks.length - 1]?.seq).toBe(501);
+ });
+ expect(store.chunks[0]?.seq).toBe(426);
+ expect(store.chunks).toHaveLength(76);
+
+ store.dispose();
+ });
+
+ it("setChatLimit: lowering the limit trims older committed chunks live", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ chatLimit: 100,
+ });
+
+ // Load 80 committed chunks (under the limit — no trim yet).
+ historySync.returnChunks = Array.from({ length: 80 }, (_, i) => makeStoredChunk(i + 1));
+ store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
+ store.handleDelta(deltaEvent({ type: "turn-sealed", conversationId: CONV_ID, turnId: "t1" }));
+ await vi.waitFor(() => {
+ expect(store.chunks).toHaveLength(80);
+ });
+
+ // Lower the limit to 10: 80 → unload ceil(10/4)=3 per quarter, needs
+ // ceil((80-10)/3)=24 quarters → drop min(72, 80)=72 → 8 remain.
+ await store.setChatLimit(10);
+ expect(store.chunks).toHaveLength(8);
+ expect(store.chunks[0]?.seq).toBe(73);
+ expect(store.hasEarlier).toBe(true);
+
+ store.dispose();
+ });
+
+ it("setChatLimit: raising the limit refills older history up to the fresh-load window", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ // Cache holds 200 chunks; load at limit 100 → window 75 → seqs 126..200.
+ await cache.impl.commit(
+ CONV_ID,
+ Array.from({ length: 200 }, (_, i) => makeStoredChunk(i + 1)),
+ );
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ chatLimit: 100,
+ });
+ await store.load();
+ expect(store.chunks).toHaveLength(75);
+ expect(store.chunks[0]?.seq).toBe(126);
+ expect(store.hasEarlier).toBe(true);
+
+ // Raise to 200 → window floor(0.75×200)=150 → refill 75 older chunks
+ // (seqs 51..125) from the cache. No server backfill (cache is deep enough).
+ await store.setChatLimit(200);
+ expect(historySync.calls).toHaveLength(1); // the load-time tail sync only
+ expect(store.chunks).toHaveLength(150);
+ expect(store.chunks[0]?.seq).toBe(51);
+ expect(store.hasEarlier).toBe(true); // 51 > 1
+
+ store.dispose();
+ });
+
+ it("setChatLimit: raising backfills from the server when the cache is too shallow", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ // Server holds 200; cold-cache load at limit 100 → window 75 → seqs 126..200.
+ historySync.returnChunks = Array.from({ length: 200 }, (_, i) => makeStoredChunk(i + 1));
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ chatLimit: 100,
+ });
+ await store.load();
+ expect(store.chunks[0]?.seq).toBe(126);
+
+ // Raise to 200 → want 75 older. Cache only holds 126..200 → backfill
+ // seqs 51..125 from the server (CR-5 ?beforeSeq=126&limit=75).
+ await store.setChatLimit(200);
+ const backfill = historySync.calls[1];
+ expect(backfill?.window).toEqual({ beforeSeq: 126, limit: 75 });
+ expect(store.chunks).toHaveLength(150);
+ expect(store.chunks[0]?.seq).toBe(51);
+
+ store.dispose();
+ });
+
+ it("setChatLimit: raising refills all available older history (down to the origin)", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ chatLimit: 100,
+ });
+
+ // 101 chunks → one trim pass drops 25 → 76 remain (seqs 26..101).
+ historySync.returnChunks = Array.from({ length: 101 }, (_, i) => makeStoredChunk(i + 1));
+ store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
+ store.handleDelta(deltaEvent({ type: "turn-sealed", conversationId: CONV_ID, turnId: "t1" }));
+ await vi.waitFor(() => {
+ expect(store.chunks).toHaveLength(76);
+ });
+ expect(store.chunks[0]?.seq).toBe(26);
+ expect(store.hasEarlier).toBe(true);
+
+ // Raise to 500 → window 375 → want 299 older. The cache holds only
+ // seqs 1..25 below the window (no more server-side) → restore all 25 →
+ // 101 loaded, reaching the origin.
+ await store.setChatLimit(500);
+ expect(store.chunks).toHaveLength(101);
+ expect(store.chunks[0]?.seq).toBe(1);
+ expect(store.hasEarlier).toBe(false);
+
+ store.dispose();
+ });
+
+ it("setChatLimit: raising is a no-op when the window already starts at the origin", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ await cache.impl.commit(
+ CONV_ID,
+ Array.from({ length: 50 }, (_, i) => makeStoredChunk(i + 1)),
+ );
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ chatLimit: 100,
+ });
+ await store.load(); // only 50 chunks → all loaded, window starts at seq 1
+ expect(store.chunks).toHaveLength(50);
+ expect(store.hasEarlier).toBe(false);
+ const callsAfterLoad = historySync.calls.length;
+
+ await store.setChatLimit(500); // raise → refill no-ops (oldest = 1)
+ expect(store.chunks).toHaveLength(50);
+ expect(store.chunks[0]?.seq).toBe(1);
+ expect(historySync.calls).toHaveLength(callsAfterLoad); // no backfill
+
+ store.dispose();
+ });
+
+ it("setChatLimit: a nonsensical value is normalized (no crash, no trim)", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ chatLimit: 100,
+ });
+
+ historySync.returnChunks = Array.from({ length: 50 }, (_, i) => makeStoredChunk(i + 1));
+ store.handleDelta(deltaEvent({ type: "turn-start", conversationId: CONV_ID, turnId: "t1" }));
+ store.handleDelta(deltaEvent({ type: "turn-sealed", conversationId: CONV_ID, turnId: "t1" }));
+ await vi.waitFor(() => {
+ expect(store.chunks).toHaveLength(50);
+ });
+
+ // NaN normalizes to the default (256). prev was 100 → raise → refill,
+ // but the loaded window already starts at seq 1 (origin) → no-op.
+ await store.setChatLimit(Number.NaN);
+ expect(store.chunks).toHaveLength(50);
+
+ store.dispose();
+ });
+
+ it("resync is a no-op after dispose", async () => {
+ const transport = createFakeTransport();
+ const historySync = createFakeHistorySync();
+ const metricsSync = createFakeMetricsSync();
+ const cache = createFakeCache();
+ const store = createChatStore({
+ conversationId: CONV_ID,
+ transport: transport.impl,
+ historySync: historySync.impl,
+ metricsSync: metricsSync.impl,
+ cache: cache.impl,
+ });
+
+ store.dispose();
+ store.resync();
+
+ await new Promise((r) => setTimeout(r, 10));
+ expect(historySync.calls).toHaveLength(0);
+ expect(metricsSync.calls).toHaveLength(0);
+ });
});
diff --git a/src/features/chat/test-helpers.ts b/src/features/chat/test-helpers.ts
index d37b59e..26c5590 100644
--- a/src/features/chat/test-helpers.ts
+++ b/src/features/chat/test-helpers.ts
@@ -1,83 +1,142 @@
+import type { ChatQueueMessage, ChatSendMessage } from "@dispatch/transport-contract";
import type { StoredChunk } from "@dispatch/wire";
import type { ConversationCache } from "../conversation-cache";
-import type { ChatTransport, HistorySync } from "./ports";
+import type { ChatTransport, HistorySync, HistoryWindow, MetricsSync } from "./ports";
export interface FakeTransport {
- readonly sent: import("@dispatch/transport-contract").ChatSendMessage[];
- readonly impl: ChatTransport;
+ /** All `chat.send` messages sent through the fake transport. */
+ readonly sent: ChatSendMessage[];
+ /** All `chat.queue` messages sent through the fake transport. */
+ readonly sentQueue: ChatQueueMessage[];
+ readonly impl: ChatTransport;
}
export function createFakeTransport(): FakeTransport {
- const sent: import("@dispatch/transport-contract").ChatSendMessage[] = [];
- return {
- sent,
- impl: {
- send(msg) {
- sent.push(msg);
- },
- },
- };
+ const sent: ChatSendMessage[] = [];
+ const sentQueue: ChatQueueMessage[] = [];
+ return {
+ sent,
+ sentQueue,
+ impl: {
+ send(msg) {
+ if (msg.type === "chat.queue") {
+ sentQueue.push(msg);
+ } else {
+ sent.push(msg);
+ }
+ },
+ },
+ };
}
export interface FakeHistorySync {
- readonly calls: Array<{ conversationId: string; sinceSeq: number }>;
- /** Set the chunks to return on the next call. */
- returnChunks: readonly StoredChunk[];
- readonly impl: HistorySync;
+ readonly calls: Array<{ conversationId: string; sinceSeq: number; window?: HistoryWindow }>;
+ /** Set the chunks to return on the next call. */
+ returnChunks: readonly StoredChunk[];
+ readonly impl: HistorySync;
}
export function createFakeHistorySync(): FakeHistorySync {
- const calls: Array<{ conversationId: string; sinceSeq: number }> = [];
- let returnChunks: readonly StoredChunk[] = [];
- return {
- calls,
- get returnChunks() {
- return returnChunks;
- },
- set returnChunks(v: readonly StoredChunk[]) {
- returnChunks = v;
- },
- impl: async (conversationId, sinceSeq) => {
- calls.push({ conversationId, sinceSeq });
- const chunks = returnChunks;
- const latestSeq = chunks.length > 0 ? Math.max(...chunks.map((c) => c.seq)) : sinceSeq;
- return { chunks, latestSeq };
- },
- };
+ const calls: Array<{ conversationId: string; sinceSeq: number; window?: HistoryWindow }> = [];
+ let returnChunks: readonly StoredChunk[] = [];
+ return {
+ calls,
+ get returnChunks() {
+ return returnChunks;
+ },
+ set returnChunks(v: readonly StoredChunk[]) {
+ returnChunks = v;
+ },
+ impl: async (conversationId, sinceSeq, window) => {
+ calls.push({ conversationId, sinceSeq, ...(window !== undefined ? { window } : {}) });
+ // Apply the CR-5 WINDOW semantics (`beforeSeq` bound, then newest-`limit`)
+ // so store tests exercise the real windowed flows. `sinceSeq` filtering is
+ // deliberately NOT applied — tests set `returnChunks` to the slice they
+ // mean the server to hold past the cursor.
+ let chunks = returnChunks;
+ const before = window?.beforeSeq;
+ if (before !== undefined) {
+ chunks = chunks.filter((c) => c.seq < before);
+ }
+ if (window?.limit !== undefined && chunks.length > window.limit) {
+ chunks = chunks.slice(-window.limit);
+ }
+ const latestSeq = chunks.length > 0 ? Math.max(...chunks.map((c) => c.seq)) : sinceSeq;
+ return { chunks, latestSeq };
+ },
+ };
+}
+
+export interface FakeMetricsSync {
+ readonly calls: string[];
+ returnTurns: import("@dispatch/wire").TurnMetrics[];
+ /** If set, the next call will reject with this error. */
+ nextError: string | undefined;
+ readonly impl: MetricsSync;
+}
+
+export function createFakeMetricsSync(): FakeMetricsSync {
+ const calls: string[] = [];
+ let returnTurns: import("@dispatch/wire").TurnMetrics[] = [];
+ let nextError: string | undefined;
+ return {
+ calls,
+ get returnTurns() {
+ return returnTurns;
+ },
+ set returnTurns(v: import("@dispatch/wire").TurnMetrics[]) {
+ returnTurns = v;
+ },
+ get nextError() {
+ return nextError;
+ },
+ set nextError(v: string | undefined) {
+ nextError = v;
+ },
+ impl: async (conversationId) => {
+ calls.push(conversationId);
+ if (nextError !== undefined) {
+ const err = nextError;
+ nextError = undefined;
+ throw new Error(err);
+ }
+ return { turns: returnTurns };
+ },
+ };
}
export interface FakeCache {
- readonly store: Map<string, StoredChunk[]>;
- readonly impl: ConversationCache;
+ readonly store: Map<string, StoredChunk[]>;
+ readonly impl: ConversationCache;
}
export function createFakeCache(): FakeCache {
- const store = new Map<string, StoredChunk[]>();
- return {
- store,
- impl: {
- async load(conversationId) {
- return store.get(conversationId) ?? [];
- },
- async commit(conversationId, incoming) {
- const existing = store.get(conversationId) ?? [];
- const seen = new Set(existing.map((c) => c.seq));
- const toAppend = incoming.filter((c) => !seen.has(c.seq));
- const merged = [...existing, ...toAppend].sort((a, b) => a.seq - b.seq);
- store.set(conversationId, merged);
- return merged;
- },
- async sinceSeq(conversationId) {
- const chunks = store.get(conversationId) ?? [];
- if (chunks.length === 0) return 0;
- return Math.max(...chunks.map((c) => c.seq));
- },
- async evictIfOverBudget() {
- return [];
- },
- async delete(conversationId) {
- store.delete(conversationId);
- },
- },
- };
+ const store = new Map<string, StoredChunk[]>();
+ return {
+ store,
+ impl: {
+ async load(conversationId) {
+ return store.get(conversationId) ?? [];
+ },
+ async commit(conversationId, incoming) {
+ const existing = store.get(conversationId) ?? [];
+ const seen = new Set(existing.map((c) => c.seq));
+ const toAppend = incoming.filter((c) => !seen.has(c.seq));
+ const merged = [...existing, ...toAppend].sort((a, b) => a.seq - b.seq);
+ store.set(conversationId, merged);
+ return merged;
+ },
+ async sinceSeq(conversationId) {
+ const chunks = store.get(conversationId) ?? [];
+ if (chunks.length === 0) return 0;
+ return Math.max(...chunks.map((c) => c.seq));
+ },
+ async evictIfOverBudget() {
+ return [];
+ },
+ async delete(conversationId) {
+ store.delete(conversationId);
+ },
+ },
+ };
}
diff --git a/src/features/chat/ui.test.ts b/src/features/chat/ui.test.ts
index ac8f640..5f8067d 100644
--- a/src/features/chat/ui.test.ts
+++ b/src/features/chat/ui.test.ts
@@ -1,298 +1,1165 @@
-import { render, screen } from "@testing-library/svelte";
+import type { StepId } from "@dispatch/wire";
+import { render, screen, within } from "@testing-library/svelte";
import userEvent from "@testing-library/user-event";
import { describe, expect, it, vi } from "vitest";
import type { RenderedChunk } from "../../core/chunks";
+import type { TurnMetricsEntry } from "../../core/metrics";
import ChatView from "./ui/ChatView.svelte";
import Composer from "./ui/Composer.svelte";
import ModelSelector from "./ui/ModelSelector.svelte";
+import ReasoningEffortSelector from "./ui/ReasoningEffortSelector.svelte";
describe("ChatView", () => {
- it("renders a message's text chunk", () => {
- const chunks: RenderedChunk[] = [
- {
- seq: 1,
- role: "assistant",
- chunk: { type: "text", text: "Hello world" },
- provisional: false,
- },
- ];
-
- render(ChatView, { props: { chunks } });
-
- expect(screen.getByText("Hello world")).toBeInTheDocument();
- expect(screen.getByText("assistant")).toBeInTheDocument();
- });
-
- it("renders multiple chunks", () => {
- const chunks: RenderedChunk[] = [
- { seq: 1, role: "user", chunk: { type: "text", text: "Hi there" }, provisional: false },
- {
- seq: 2,
- role: "assistant",
- chunk: { type: "text", text: "Hello!" },
- provisional: false,
- },
- ];
-
- render(ChatView, { props: { chunks } });
-
- expect(screen.getByText("Hi there")).toBeInTheDocument();
- expect(screen.getByText("Hello!")).toBeInTheDocument();
- });
-
- it("renders tool-call chunks", () => {
- const chunks: RenderedChunk[] = [
- {
- seq: 1,
- role: "assistant",
- chunk: {
- type: "tool-call",
- toolCallId: "tc1",
- toolName: "read_file",
- input: { path: "/tmp/test.txt" },
- },
- provisional: false,
- },
- ];
-
- render(ChatView, { props: { chunks } });
-
- expect(screen.getByText("read_file")).toBeInTheDocument();
- const pre = screen.getByText((content, element) => {
- return element?.tagName === "PRE" && content.includes("/tmp/test.txt");
- });
- expect(pre).toBeInTheDocument();
- });
-
- it("renders tool-result chunks", () => {
- const chunks: RenderedChunk[] = [
- {
- seq: 1,
- role: "tool",
- chunk: {
- type: "tool-result",
- toolCallId: "tc1",
- toolName: "read_file",
- content: "file contents here",
- isError: false,
- },
- provisional: false,
- },
- ];
-
- render(ChatView, { props: { chunks } });
-
- expect(screen.getByText("read_file")).toBeInTheDocument();
- expect(screen.getByText("file contents here")).toBeInTheDocument();
- });
-
- it("renders error chunks with alert role", () => {
- const chunks: RenderedChunk[] = [
- {
- seq: 1,
- role: "assistant",
- chunk: { type: "error", message: "Something failed" },
- provisional: false,
- },
- ];
-
- render(ChatView, { props: { chunks } });
-
- const alert = screen.getByRole("alert");
- expect(alert).toHaveTextContent("Something failed");
- });
-
- it("renders error chunks with code", () => {
- const chunks: RenderedChunk[] = [
- {
- seq: 1,
- role: "assistant",
- chunk: { type: "error", message: "Rate limited", code: "RATE_LIMIT" },
- provisional: false,
- },
- ];
-
- render(ChatView, { props: { chunks } });
-
- expect(screen.getByText("Rate limited")).toBeInTheDocument();
- expect(screen.getByText("[RATE_LIMIT]")).toBeInTheDocument();
- });
-
- it("renders system chunks", () => {
- const chunks: RenderedChunk[] = [
- {
- seq: 1,
- role: "system",
- chunk: { type: "system", text: "System context loaded" },
- provisional: false,
- },
- ];
-
- render(ChatView, { props: { chunks } });
-
- expect(screen.getByText("System context loaded")).toBeInTheDocument();
- });
-
- it("marks provisional chunks", () => {
- const chunks: RenderedChunk[] = [
- {
- seq: null,
- role: "assistant",
- chunk: { type: "text", text: "Streaming..." },
- provisional: true,
- },
- ];
-
- render(ChatView, { props: { chunks } });
-
- const bubble = screen.getByText("Streaming...").closest(".chat-bubble");
- expect(bubble).toHaveClass("opacity-50");
- });
-
- it("renders empty transcript", () => {
- render(ChatView, { props: { chunks: [] } });
-
- const log = screen.getByRole("log");
- expect(log).toBeInTheDocument();
- expect(log.children).toHaveLength(0);
- });
-
- it("thinking <details> stays open across a streaming update", async () => {
- const initial: RenderedChunk[] = [
- {
- seq: null,
- role: "assistant",
- chunk: { type: "thinking", text: "Let me think..." },
- provisional: true,
- },
- ];
-
- const { rerender } = render(ChatView, { props: { chunks: initial } });
-
- const details = screen.getByText("Thinking").closest("details");
- expect(details).not.toBeNull();
- expect(details).not.toHaveAttribute("open");
- if (details) details.open = true;
- expect(details).toHaveAttribute("open");
-
- const updated: RenderedChunk[] = [
- {
- seq: null,
- role: "assistant",
- chunk: { type: "thinking", text: "Let me think... step by step" },
- provisional: true,
- },
- ];
- await rerender({ chunks: updated });
-
- const detailsAfter = screen.getByText("Thinking").closest("details");
- expect(detailsAfter).not.toBeNull();
- expect(detailsAfter).toHaveAttribute("open");
- expect(detailsAfter).toHaveTextContent("Let me think... step by step");
- });
+ it("renders a message's text chunk", () => {
+ const chunks: RenderedChunk[] = [
+ {
+ seq: 1,
+ role: "assistant",
+ chunk: { type: "text", text: "Hello world" },
+ provisional: false,
+ },
+ ];
+
+ render(ChatView, { props: { chunks } });
+
+ expect(screen.getByText("Hello world")).toBeInTheDocument();
+ });
+
+ it("renders multiple chunks", () => {
+ const chunks: RenderedChunk[] = [
+ { seq: 1, role: "user", chunk: { type: "text", text: "Hi there" }, provisional: false },
+ {
+ seq: 2,
+ role: "assistant",
+ chunk: { type: "text", text: "Hello!" },
+ provisional: false,
+ },
+ ];
+
+ render(ChatView, { props: { chunks } });
+
+ expect(screen.getByText("Hi there")).toBeInTheDocument();
+ expect(screen.getByText("Hello!")).toBeInTheDocument();
+ });
+
+ it("shows the show-earlier button only when earlier history is unloaded, and pages it in", async () => {
+ const chunks: RenderedChunk[] = [
+ { seq: 26, role: "user", chunk: { type: "text", text: "later" }, provisional: false },
+ ];
+
+ let resolveEarlier: (() => void) | undefined;
+ const onShowEarlier = vi.fn(
+ () =>
+ new Promise<void>((resolve) => {
+ resolveEarlier = resolve;
+ }),
+ );
+
+ render(ChatView, { props: { chunks, hasEarlier: true, onShowEarlier } });
+
+ const button = screen.getByRole("button", { name: /show earlier messages/i });
+ const user = userEvent.setup();
+ await user.click(button);
+
+ expect(onShowEarlier).toHaveBeenCalledTimes(1);
+ // While the page-in is awaited the button is disabled (no double-fire).
+ expect(screen.getByRole("button", { name: /loading earlier messages/i })).toBeDisabled();
+
+ resolveEarlier?.();
+ await vi.waitFor(() => {
+ expect(screen.getByRole("button", { name: /show earlier messages/i })).toBeEnabled();
+ });
+ });
+
+ it("hides the show-earlier button when nothing is unloaded", () => {
+ const chunks: RenderedChunk[] = [
+ { seq: 1, role: "user", chunk: { type: "text", text: "all here" }, provisional: false },
+ ];
+
+ render(ChatView, { props: { chunks, hasEarlier: false, onShowEarlier: vi.fn() } });
+
+ expect(screen.queryByRole("button", { name: /show earlier/i })).not.toBeInTheDocument();
+ });
+
+ it("renders tool-call chunks", () => {
+ const chunks: RenderedChunk[] = [
+ {
+ seq: 1,
+ role: "assistant",
+ chunk: {
+ type: "tool-call",
+ toolCallId: "tc1",
+ toolName: "read_file",
+ input: { path: "/tmp/test.txt" },
+ },
+ provisional: false,
+ },
+ ];
+
+ render(ChatView, { props: { chunks } });
+
+ expect(screen.getByText("read_file")).toBeInTheDocument();
+ const pre = screen.getByText((content, element) => {
+ return element?.tagName === "PRE" && content.includes("/tmp/test.txt");
+ });
+ expect(pre).toBeInTheDocument();
+ });
+
+ it("renders tool-result chunks", () => {
+ const chunks: RenderedChunk[] = [
+ {
+ seq: 1,
+ role: "tool",
+ chunk: {
+ type: "tool-result",
+ toolCallId: "tc1",
+ toolName: "read_file",
+ content: "file contents here",
+ isError: false,
+ },
+ provisional: false,
+ },
+ ];
+
+ render(ChatView, { props: { chunks } });
+
+ expect(screen.getByText("read_file")).toBeInTheDocument();
+ expect(screen.getByText("file contents here")).toBeInTheDocument();
+ });
+
+ it("renders error chunks with alert role", () => {
+ const chunks: RenderedChunk[] = [
+ {
+ seq: 1,
+ role: "assistant",
+ chunk: { type: "error", message: "Something failed" },
+ provisional: false,
+ },
+ ];
+
+ render(ChatView, { props: { chunks } });
+
+ const alert = screen.getByRole("alert");
+ expect(alert).toHaveTextContent("Something failed");
+ });
+
+ it("renders error chunks with code", () => {
+ const chunks: RenderedChunk[] = [
+ {
+ seq: 1,
+ role: "assistant",
+ chunk: { type: "error", message: "Rate limited", code: "RATE_LIMIT" },
+ provisional: false,
+ },
+ ];
+
+ render(ChatView, { props: { chunks } });
+
+ expect(screen.getByText("Rate limited")).toBeInTheDocument();
+ expect(screen.getByText("[RATE_LIMIT]")).toBeInTheDocument();
+ });
+
+ it("renders system chunks", () => {
+ const chunks: RenderedChunk[] = [
+ {
+ seq: 1,
+ role: "system",
+ chunk: { type: "system", text: "System context loaded" },
+ provisional: false,
+ },
+ ];
+
+ render(ChatView, { props: { chunks } });
+
+ expect(screen.getByText("System context loaded")).toBeInTheDocument();
+ });
+
+ it("renders provisional (in-flight) chunks without any dimming", () => {
+ const chunks: RenderedChunk[] = [
+ {
+ seq: null,
+ role: "assistant",
+ chunk: { type: "text", text: "Streaming..." },
+ provisional: true,
+ },
+ ];
+
+ render(ChatView, { props: { chunks } });
+
+ // In-flight chunks render at full opacity (no faded "disabled" look).
+ const wrapper = screen.getByText("Streaming...").closest("div");
+ expect(wrapper).not.toHaveClass("opacity-50");
+ });
+
+ it("renders empty transcript", () => {
+ render(ChatView, { props: { chunks: [] } });
+
+ const log = screen.getByRole("log");
+ expect(log).toBeInTheDocument();
+ expect(log.children).toHaveLength(0);
+ });
+
+ it("groups batched tool calls (shared stepId) into one DaisyUI list", () => {
+ const chunks: RenderedChunk[] = [
+ {
+ seq: 1,
+ role: "assistant",
+ chunk: {
+ type: "tool-call",
+ toolCallId: "a",
+ toolName: "read_file",
+ input: { path: "/a" },
+ stepId: "t1#0" as StepId,
+ },
+ provisional: false,
+ },
+ {
+ seq: 2,
+ role: "assistant",
+ chunk: {
+ type: "tool-call",
+ toolCallId: "b",
+ toolName: "list_dir",
+ input: { path: "/b" },
+ stepId: "t1#0" as StepId,
+ },
+ provisional: false,
+ },
+ {
+ seq: 3,
+ role: "tool",
+ chunk: {
+ type: "tool-result",
+ toolCallId: "a",
+ toolName: "read_file",
+ content: "contents-of-a",
+ isError: false,
+ stepId: "t1#0" as StepId,
+ },
+ provisional: false,
+ },
+ ];
+
+ const { container } = render(ChatView, { props: { chunks } });
+
+ // Batched calls render as collapsible cards (one per call), not a list.
+ const collapses = container.querySelectorAll(".collapse");
+ expect(collapses).toHaveLength(2);
+
+ // Both call names + the available result are shown; the result is absorbed
+ // (no standalone tool-result card).
+ expect(screen.getByText("read_file")).toBeInTheDocument();
+ expect(screen.getByText("list_dir")).toBeInTheDocument();
+ expect(screen.getByText("contents-of-a")).toBeInTheDocument();
+ });
+
+ it("thinking is a checkbox collapse (no arrow) inside a visible bubble", () => {
+ const chunks: RenderedChunk[] = [
+ {
+ seq: null,
+ role: "assistant",
+ chunk: { type: "thinking", text: "Let me think..." },
+ provisional: true,
+ streaming: true,
+ },
+ ];
+
+ const { container } = render(ChatView, { props: { chunks } });
+
+ const collapse = container.querySelector(".collapse");
+ expect(collapse).not.toBeNull();
+ expect(collapse).not.toHaveClass("collapse-arrow"); // no indicator icon
+ expect(collapse).not.toHaveClass("collapse-plus");
+ // Visible bubble, like tool cards.
+ expect(collapse).toHaveClass("bg-base-200");
+ expect(collapse).toHaveClass("rounded-box");
+ expect(screen.getByRole("checkbox", { name: "Toggle thoughts" })).toBeInTheDocument();
+ });
+
+ it("title is 'Thinking' + dots while streaming, then 'Thoughts' with no dots once complete; open state persists", async () => {
+ const streaming: RenderedChunk[] = [
+ {
+ seq: null,
+ role: "assistant",
+ chunk: { type: "thinking", text: "hmm" },
+ provisional: true,
+ streaming: true,
+ },
+ ];
+
+ const { container, rerender } = render(ChatView, { props: { chunks: streaming } });
+
+ // Streaming: "Thinking" + loading dots.
+ expect(screen.getByText("Thinking")).toBeInTheDocument();
+ expect(screen.queryByText("Thoughts")).toBeNull();
+ expect(container.querySelector(".loading")).not.toBeNull();
+
+ // Open it.
+ const checkbox = screen.getByRole("checkbox", { name: "Toggle thoughts" });
+ await userEvent.click(checkbox);
+ expect(checkbox).toBeChecked();
+
+ // Transition generating → completed/committed (seq assigned, no longer streaming).
+ await rerender({
+ chunks: [
+ {
+ seq: 1,
+ role: "assistant",
+ chunk: { type: "thinking", text: "hmm, all done" },
+ provisional: false,
+ },
+ ],
+ });
+
+ // Completed: "Thoughts", no dots — and the open state survived the transition.
+ expect(screen.getByText("Thoughts")).toBeInTheDocument();
+ expect(screen.queryByText("Thinking")).toBeNull();
+ expect(container.querySelector(".loading")).toBeNull();
+ expect(screen.getByRole("checkbox", { name: "Toggle thoughts" })).toBeChecked();
+ expect(container).toHaveTextContent("hmm, all done");
+ });
+
+ it("renders step and turn metrics as separate rows", () => {
+ const chunks: RenderedChunk[] = [
+ { seq: 1, role: "user", chunk: { type: "text", text: "Hi" }, provisional: false },
+ {
+ seq: 2,
+ role: "assistant",
+ chunk: { type: "text", text: "Hello!" },
+ provisional: false,
+ },
+ {
+ seq: 3,
+ role: "assistant",
+ chunk: {
+ type: "tool-call",
+ toolCallId: "tc1",
+ toolName: "test",
+ input: {},
+ stepId: "t1#0" as StepId,
+ },
+ provisional: false,
+ },
+ ];
+
+ const turnMetrics: TurnMetricsEntry[] = [
+ {
+ turnId: "t1",
+ steps: [
+ {
+ stepId: "t1#0" as StepId,
+ usage: { inputTokens: 100, outputTokens: 50 },
+ genTotalMs: 800,
+ },
+ ],
+ total: {
+ turnId: "t1",
+ usage: { inputTokens: 100, outputTokens: 50 },
+ durationMs: 1200,
+ steps: [
+ {
+ stepId: "t1#0" as StepId,
+ usage: { inputTokens: 100, outputTokens: 50 },
+ genTotalMs: 800,
+ },
+ ],
+ },
+ },
+ ];
+
+ render(ChatView, { props: { chunks, turnMetrics } });
+
+ expect(screen.getByText("Hi")).toBeInTheDocument();
+ expect(screen.getByText("Hello!")).toBeInTheDocument();
+ expect(screen.getByText(/step 1/)).toBeInTheDocument();
+ expect(screen.getAllByText(/150 tok/)).toHaveLength(2);
+ expect(screen.getByText(/turn 1 · 150 tok \(100 in \/ 50 out\)/)).toBeInTheDocument();
+ expect(screen.getByText(/1\.2s/)).toBeInTheDocument();
+ });
+
+ it("renders cache hit-rate badges (Last turn + Chat Total) coloured by level", () => {
+ const chunks: RenderedChunk[] = [
+ { seq: 1, role: "user", chunk: { type: "text", text: "Hi" }, provisional: false },
+ {
+ seq: 2,
+ role: "assistant",
+ chunk: { type: "text", text: "Hello!" },
+ provisional: false,
+ },
+ ];
+ const turnMetrics: TurnMetricsEntry[] = [
+ {
+ turnId: "t1",
+ steps: [],
+ total: {
+ turnId: "t1",
+ usage: { inputTokens: 100, outputTokens: 10, cacheReadTokens: 93 },
+ steps: [],
+ },
+ },
+ ];
+
+ const { container } = render(ChatView, { props: { chunks, turnMetrics } });
+
+ expect(screen.getByText("Last turn:")).toBeInTheDocument();
+ expect(screen.getByText("Chat Total:")).toBeInTheDocument();
+ // single turn ⇒ both the turn rate and the cumulative are 93% ⇒ success badge
+ const badges = container.querySelectorAll(".badge");
+ expect(badges).toHaveLength(2);
+ for (const b of badges) {
+ expect(b.textContent).toBe("93%");
+ expect(b.classList.contains("badge-success")).toBe(true);
+ }
+ });
+
+ it("renders step-metrics inline after tool group", () => {
+ const chunks: RenderedChunk[] = [
+ { seq: 1, role: "user", chunk: { type: "text", text: "Run it" }, provisional: false },
+ {
+ seq: 2,
+ role: "assistant",
+ chunk: {
+ type: "tool-call",
+ toolCallId: "tc1",
+ toolName: "bash",
+ input: { command: "ls" },
+ stepId: "t1#0" as StepId,
+ },
+ provisional: false,
+ },
+ {
+ seq: 3,
+ role: "tool",
+ chunk: {
+ type: "tool-result",
+ toolCallId: "tc1",
+ toolName: "bash",
+ content: "file.txt",
+ isError: false,
+ stepId: "t1#0" as StepId,
+ },
+ provisional: false,
+ },
+ {
+ seq: 4,
+ role: "assistant",
+ chunk: { type: "text", text: "Done!" },
+ provisional: false,
+ },
+ ];
+
+ const turnMetrics: TurnMetricsEntry[] = [
+ {
+ turnId: "t1",
+ steps: [
+ {
+ stepId: "t1#0" as StepId,
+ usage: { inputTokens: 80, outputTokens: 20 },
+ genTotalMs: 300,
+ },
+ ],
+ total: {
+ turnId: "t1",
+ usage: { inputTokens: 80, outputTokens: 20 },
+ durationMs: 500,
+ steps: [
+ {
+ stepId: "t1#0" as StepId,
+ usage: { inputTokens: 80, outputTokens: 20 },
+ genTotalMs: 300,
+ },
+ ],
+ },
+ },
+ ];
+
+ render(ChatView, { props: { chunks, turnMetrics } });
+
+ // Both step-metrics and turn-metrics render
+ expect(screen.getByText(/step 1/)).toBeInTheDocument();
+ expect(screen.getByText(/turn 1 · 100 tok/)).toBeInTheDocument();
+
+ // They are in separate elements (different rows)
+ const stepEl = screen.getByText(/step 1 · 100 tok/).closest("div");
+ const turnEl = screen.getByText(/turn 1 · 100 tok/).closest("div");
+ expect(stepEl).not.toBe(turnEl);
+ });
+
+ it("renders no metrics bubble when turnMetrics is empty", () => {
+ const chunks: RenderedChunk[] = [
+ { seq: 1, role: "user", chunk: { type: "text", text: "Hi" }, provisional: false },
+ {
+ seq: 2,
+ role: "assistant",
+ chunk: { type: "text", text: "Hello!" },
+ provisional: false,
+ },
+ ];
+
+ render(ChatView, { props: { chunks, turnMetrics: [] } });
+
+ expect(screen.getByText("Hi")).toBeInTheDocument();
+ expect(screen.getByText("Hello!")).toBeInTheDocument();
+ expect(screen.queryByText(/step 1/)).toBeNull();
+ expect(screen.queryByText(/^turn/)).toBeNull();
+ });
+
+ it("omits null view values from metrics bubbles", () => {
+ const chunks: RenderedChunk[] = [
+ { seq: 1, role: "user", chunk: { type: "text", text: "Test" }, provisional: false },
+ {
+ seq: 2,
+ role: "assistant",
+ chunk: { type: "text", text: "Response" },
+ provisional: false,
+ },
+ {
+ seq: 3,
+ role: "assistant",
+ chunk: {
+ type: "tool-call",
+ toolCallId: "tc1",
+ toolName: "test",
+ input: {},
+ stepId: "t1#0" as StepId,
+ },
+ provisional: false,
+ },
+ ];
+
+ const turnMetrics: TurnMetricsEntry[] = [
+ {
+ turnId: "t1",
+ steps: [
+ {
+ stepId: "t1#0" as StepId,
+ usage: { inputTokens: 10, outputTokens: 5 },
+ },
+ ],
+ total: {
+ turnId: "t1",
+ usage: { inputTokens: 10, outputTokens: 5 },
+ steps: [
+ {
+ stepId: "t1#0" as StepId,
+ usage: { inputTokens: 10, outputTokens: 5 },
+ },
+ ],
+ },
+ },
+ ];
+
+ render(ChatView, { props: { chunks, turnMetrics } });
+
+ // Step metrics rendered
+ expect(screen.getByText(/step 1/)).toBeInTheDocument();
+ expect(screen.getAllByText(/15 tok/)).toHaveLength(2);
+ // Turn metrics rendered
+ expect(screen.getByText(/turn 1 · 15 tok \(10 in \/ 5 out\)/)).toBeInTheDocument();
+ // No "null" or "undefined" in the DOM
+ expect(screen.queryByText("null")).toBeNull();
+ expect(screen.queryByText("undefined")).toBeNull();
+ });
+
+ it("renders step text but no turn total for a progressive turn (total: null)", () => {
+ const chunks: RenderedChunk[] = [
+ { seq: 1, role: "user", chunk: { type: "text", text: "Hi" }, provisional: false },
+ {
+ seq: 2,
+ role: "assistant",
+ chunk: { type: "text", text: "Hello!" },
+ provisional: false,
+ },
+ {
+ seq: 3,
+ role: "assistant",
+ chunk: {
+ type: "tool-call",
+ toolCallId: "tc1",
+ toolName: "test",
+ input: {},
+ stepId: "t1#0" as StepId,
+ },
+ provisional: false,
+ },
+ ];
+
+ const turnMetrics: TurnMetricsEntry[] = [
+ {
+ turnId: "t1",
+ steps: [
+ {
+ stepId: "t1#0" as StepId,
+ usage: { inputTokens: 100, outputTokens: 50 },
+ genTotalMs: 800,
+ },
+ ],
+ total: null,
+ },
+ ];
+
+ render(ChatView, { props: { chunks, turnMetrics } });
+
+ // Step metrics should render
+ expect(screen.getByText(/step 1/)).toBeInTheDocument();
+ expect(screen.getByText(/150 tok/)).toBeInTheDocument();
+
+ // Turn total should NOT render (total is null — turn still in progress)
+ expect(screen.queryByText(/^turn/)).toBeNull();
+ });
+
+ it("renders a user image chunk as an <img> with the chunk's url", () => {
+ const url = "data:image/png;base64,AAAA";
+ const chunks: RenderedChunk[] = [
+ {
+ seq: 1,
+ role: "user",
+ chunk: { type: "image", url, mimeType: "image/png" },
+ provisional: false,
+ },
+ ];
+
+ const { container } = render(ChatView, { props: { chunks } });
+
+ const img = container.querySelector("img");
+ expect(img).not.toBeNull();
+ expect(img?.getAttribute("src")).toBe(url);
+ expect(img?.getAttribute("alt")).toBe("image/png");
+ expect(img?.getAttribute("loading")).toBe("lazy");
+ });
+
+ it("resolves a persisted image chunk's relative url against apiBaseUrl", () => {
+ // Persisted image chunks now carry a compact relative path (`/images/…`)
+ // served by the backend — prepend the API base to render them.
+ const chunks: RenderedChunk[] = [
+ {
+ seq: 1,
+ role: "user",
+ chunk: { type: "image", url: "/images/conv-123/abc-456.png", mimeType: "image/png" },
+ provisional: false,
+ },
+ ];
+
+ const { container } = render(ChatView, {
+ props: { chunks, apiBaseUrl: "http://localhost:24203" },
+ });
+
+ expect(container.querySelector("img")?.getAttribute("src")).toBe(
+ "http://localhost:24203/images/conv-123/abc-456.png",
+ );
+ });
+
+ it("passes a data URL through unchanged even with apiBaseUrl set (optimistic echo)", () => {
+ // The optimistic echo (what the FE just sent) is still a data URL; it must
+ // NOT be mangled by the base-URL prepend.
+ const dataUrl = "data:image/png;base64,iVBOR=";
+ const chunks: RenderedChunk[] = [
+ { seq: null, role: "user", chunk: { type: "image", url: dataUrl }, provisional: true },
+ ];
+
+ const { container } = render(ChatView, {
+ props: { chunks, apiBaseUrl: "http://localhost:24203" },
+ });
+
+ expect(container.querySelector("img")?.getAttribute("src")).toBe(dataUrl);
+ });
+
+ it("leaves a relative image url root-relative when apiBaseUrl is absent", () => {
+ // No apiBaseUrl → a browser resolves `/images/…` against the document origin.
+ const chunks: RenderedChunk[] = [
+ {
+ seq: 1,
+ role: "user",
+ chunk: { type: "image", url: "/images/conv-1/x.png" },
+ provisional: false,
+ },
+ ];
+
+ const { container } = render(ChatView, { props: { chunks } });
+
+ expect(container.querySelector("img")?.getAttribute("src")).toBe("/images/conv-1/x.png");
+ });
+
+ it("renders a multi-chunk user message [text, image] and a transcription text", () => {
+ // A non-vision model: the server persists the original image chunk AND a
+ // transcription text chunk in the SAME user message — render both.
+ const url = "data:image/png;base64,BBQ=";
+ const chunks: RenderedChunk[] = [
+ { seq: 1, role: "user", chunk: { type: "text", text: "describe this" }, provisional: false },
+ {
+ seq: 2,
+ role: "user",
+ chunk: { type: "image", url, mimeType: "image/png" },
+ provisional: false,
+ },
+ {
+ seq: 3,
+ role: "user",
+ chunk: { type: "text", text: "[Image analysis (via kimi/k2)]: a red square" },
+ provisional: false,
+ },
+ ];
+
+ const { container } = render(ChatView, { props: { chunks } });
+
+ expect(screen.getByText("describe this")).toBeInTheDocument();
+ expect(screen.getByText(/\[Image analysis/)).toBeInTheDocument();
+ expect(container.querySelector("img")?.getAttribute("src")).toBe(url);
+ });
+
+ it("renders a consult_vision tool call/result like any other tool", () => {
+ // read_image is GONE — replaced by consult_vision (opens a vision-model
+ // conversation, attaches the image + question, returns the answer). It is
+ // a normal tool call: rendered generically by toolName.
+ const chunks: RenderedChunk[] = [
+ {
+ seq: 1,
+ role: "assistant",
+ chunk: {
+ type: "tool-call",
+ toolCallId: "tc1",
+ toolName: "consult_vision",
+ input: { question: "what is in this image?", imageIds: [1] },
+ },
+ provisional: false,
+ },
+ {
+ seq: 2,
+ role: "tool",
+ chunk: {
+ type: "tool-result",
+ toolCallId: "tc1",
+ toolName: "consult_vision",
+ content: "a red square on a white background",
+ isError: false,
+ },
+ provisional: false,
+ },
+ ];
+
+ render(ChatView, { props: { chunks } });
+
+ expect(screen.getAllByText("consult_vision").length).toBeGreaterThan(0);
+ expect(screen.getByText("a red square on a white background")).toBeInTheDocument();
+ });
+
+ it("renders a non-vision placeholder text chunk as-is", () => {
+ // A non-vision model gets a numbered placeholder (a regular text chunk)
+ // instead of an auto-transcription. Renders like any text chunk.
+ const chunks: RenderedChunk[] = [
+ {
+ seq: 1,
+ role: "user",
+ chunk: {
+ type: "text",
+ text: "[Image 1 attached — call consult_vision with imageIds=[1] and a specific question to analyze it]",
+ },
+ provisional: false,
+ },
+ ];
+
+ render(ChatView, { props: { chunks } });
+
+ expect(screen.getByText(/\[Image 1 attached/)).toBeInTheDocument();
+ expect(screen.getByText(/consult_vision with imageIds/)).toBeInTheDocument();
+ });
+
+ it("renders a compacted-image text chunk as-is", () => {
+ // Image compaction transcribes old images to [Compacted image]: <desc>.
+ // Regular text chunk — render as-is.
+ const chunks: RenderedChunk[] = [
+ {
+ seq: 1,
+ role: "user",
+ chunk: { type: "text", text: "[Compacted image]: a chart showing rising sales" },
+ provisional: false,
+ },
+ ];
+
+ render(ChatView, { props: { chunks } });
+
+ expect(screen.getByText(/\[Compacted image\]/)).toBeInTheDocument();
+ expect(screen.getByText(/rising sales/)).toBeInTheDocument();
+ });
});
describe("Composer", () => {
- it("calls onSend with the typed text and clears", async () => {
- const onSend = vi.fn();
- const user = userEvent.setup();
+ it("calls onSend with the typed text and clears", async () => {
+ const onSend = vi.fn();
+ const user = userEvent.setup();
+
+ render(Composer, { props: { onSend } });
+
+ const textarea = screen.getByRole("textbox", { name: "Message input" });
+ await user.type(textarea, "Hello world");
+
+ const sendButton = screen.getByRole("button", { name: "Send" });
+ await user.click(sendButton);
+
+ expect(onSend).toHaveBeenCalledTimes(1);
+ expect(onSend).toHaveBeenCalledWith("Hello world", undefined);
+ expect(textarea).toHaveValue("");
+ });
+
+ it("does not call onSend with empty text", async () => {
+ const onSend = vi.fn();
+ const _user = userEvent.setup();
+
+ render(Composer, { props: { onSend } });
+
+ const sendButton = screen.getByRole("button", { name: "Send" });
+ expect(sendButton).toBeDisabled();
+
+ expect(onSend).not.toHaveBeenCalled();
+ });
+
+ it("trims whitespace before sending", async () => {
+ const onSend = vi.fn();
+ const user = userEvent.setup();
+
+ render(Composer, { props: { onSend } });
+
+ const textarea = screen.getByRole("textbox", { name: "Message input" });
+ await user.type(textarea, " hello ");
+
+ const sendButton = screen.getByRole("button", { name: "Send" });
+ await user.click(sendButton);
+
+ expect(onSend).toHaveBeenCalledWith("hello", undefined);
+ });
+
+ it("sends on Enter key (without Shift)", async () => {
+ const onSend = vi.fn();
+ const user = userEvent.setup();
+
+ render(Composer, { props: { onSend } });
+
+ const textarea = screen.getByRole("textbox", { name: "Message input" });
+ await user.type(textarea, "Test message{Enter}");
+
+ expect(onSend).toHaveBeenCalledWith("Test message", undefined);
+ });
+
+ it("does not send on Shift+Enter", async () => {
+ const onSend = vi.fn();
+ const user = userEvent.setup();
+
+ render(Composer, { props: { onSend } });
+
+ const textarea = screen.getByRole("textbox", { name: "Message input" });
+ await user.type(textarea, "Line 1{Shift>}{Enter}{/Shift}Line 2");
+
+ expect(onSend).not.toHaveBeenCalled();
+ });
+
+ it("stages a pasted image and forwards it on send", async () => {
+ const onSend = vi.fn();
+ const user = userEvent.setup();
+ const { container } = render(Composer, { props: { onSend } });
- render(Composer, { props: { onSend } });
+ const textarea = screen.getByRole("textbox", { name: "Message input" });
+ await user.type(textarea, "look at this");
- const textarea = screen.getByRole("textbox", { name: "Message input" });
- await user.type(textarea, "Hello world");
+ // jsdom has no ClipboardEvent/DataTransfer: dispatch a plain paste event
+ // carrying a mock clipboardData whose only item is an image File.
+ const file = new File(["PNG"], "shot.png", { type: "image/png" });
+ const paste = new Event("paste", { bubbles: true });
+ Object.defineProperty(paste, "clipboardData", {
+ value: {
+ items: [{ kind: "file", type: "image/png", getAsFile: () => file }],
+ },
+ });
+ container.querySelector("textarea")?.dispatchEvent(paste);
- const sendButton = screen.getByRole("button", { name: "Send" });
- await user.click(sendButton);
+ await vi.waitFor(() => {
+ expect(screen.getByRole("button", { name: "Remove image" })).toBeInTheDocument();
+ });
- expect(onSend).toHaveBeenCalledTimes(1);
- expect(onSend).toHaveBeenCalledWith("Hello world");
- expect(textarea).toHaveValue("");
- });
+ await user.click(screen.getByRole("button", { name: "Send" }));
- it("does not call onSend with empty text", async () => {
- const onSend = vi.fn();
- const _user = userEvent.setup();
+ expect(onSend).toHaveBeenCalledTimes(1);
+ const [, images] = onSend.mock.calls[0] ?? [];
+ expect(images).toHaveLength(1);
+ expect(images[0]?.url).toMatch(/^data:image\/png;base64,/);
+ expect(images[0]?.mimeType).toBe("image/png");
+ });
- render(Composer, { props: { onSend } });
+ it("lets a text paste proceed when no image is on the clipboard", async () => {
+ const onSend = vi.fn();
+ const user = userEvent.setup();
+ const { container } = render(Composer, { props: { onSend } });
- const sendButton = screen.getByRole("button", { name: "Send" });
- expect(sendButton).toBeDisabled();
+ const textarea = screen.getByRole("textbox", { name: "Message input" });
+ await user.type(textarea, "hello");
- expect(onSend).not.toHaveBeenCalled();
- });
+ // A text-only paste: no file items → the component must NOT preventDefault,
+ // so the default text paste path is unaffected (no image staged).
+ const paste = new Event("paste", { bubbles: true });
+ Object.defineProperty(paste, "clipboardData", {
+ value: { items: [{ kind: "string", type: "text/plain" }] },
+ });
+ container.querySelector("textarea")?.dispatchEvent(paste);
- it("trims whitespace before sending", async () => {
- const onSend = vi.fn();
- const user = userEvent.setup();
+ await new Promise((r) => setTimeout(r, 0));
+ expect(screen.queryByRole("button", { name: "Remove image" })).not.toBeInTheDocument();
+ });
- render(Composer, { props: { onSend } });
+ it("stages an image via the attach button's file picker", async () => {
+ const onSend = vi.fn();
+ const user = userEvent.setup();
+ const { container } = render(Composer, { props: { onSend } });
- const textarea = screen.getByRole("textbox", { name: "Message input" });
- await user.type(textarea, " hello ");
+ const file = new File(["JPG"], "photo.jpg", { type: "image/jpeg" });
+ const input = container.querySelector('input[type="file"]') as HTMLInputElement;
+ Object.defineProperty(input, "files", { value: [file], writable: false });
+ input.dispatchEvent(new Event("change", { bubbles: true }));
- const sendButton = screen.getByRole("button", { name: "Send" });
- await user.click(sendButton);
+ await vi.waitFor(() => {
+ expect(screen.getByRole("button", { name: "Remove image" })).toBeInTheDocument();
+ });
- expect(onSend).toHaveBeenCalledWith("hello");
- });
+ // Image-only send (no text): the Send button is enabled.
+ const send = screen.getByRole("button", { name: "Send" });
+ expect(send).not.toBeDisabled();
+ await user.click(send);
- it("sends on Enter key (without Shift)", async () => {
- const onSend = vi.fn();
- const user = userEvent.setup();
+ expect(onSend).toHaveBeenCalledTimes(1);
+ const [text, images] = onSend.mock.calls[0] ?? [];
+ expect(text).toBe("");
+ expect(images).toHaveLength(1);
+ expect(images[0]?.mimeType).toBe("image/jpeg");
+ });
- render(Composer, { props: { onSend } });
+ it("removes a staged image via the remove button", async () => {
+ const onSend = vi.fn();
+ const user = userEvent.setup();
+ const { container } = render(Composer, { props: { onSend } });
- const textarea = screen.getByRole("textbox", { name: "Message input" });
- await user.type(textarea, "Test message{Enter}");
+ const file = new File(["PNG"], "shot.png", { type: "image/png" });
+ const input = container.querySelector('input[type="file"]') as HTMLInputElement;
+ Object.defineProperty(input, "files", { value: [file], writable: false });
+ input.dispatchEvent(new Event("change", { bubbles: true }));
- expect(onSend).toHaveBeenCalledWith("Test message");
- });
+ await vi.waitFor(() => {
+ expect(screen.getByRole("button", { name: "Remove image" })).toBeInTheDocument();
+ });
+ await user.click(screen.getByRole("button", { name: "Remove image" }));
- it("does not send on Shift+Enter", async () => {
- const onSend = vi.fn();
- const user = userEvent.setup();
+ expect(screen.queryByRole("button", { name: "Remove image" })).not.toBeInTheDocument();
+ // With no text and no images, Send is disabled again.
+ expect(screen.getByRole("button", { name: "Send" })).toBeDisabled();
+ });
- render(Composer, { props: { onSend } });
+ it("ignores a non-image file chosen via the picker", async () => {
+ const onSend = vi.fn();
+ const { container } = render(Composer, { props: { onSend } });
- const textarea = screen.getByRole("textbox", { name: "Message input" });
- await user.type(textarea, "Line 1{Shift>}{Enter}{/Shift}Line 2");
+ const file = new File(["TXT"], "notes.txt", { type: "text/plain" });
+ const input = container.querySelector('input[type="file"]') as HTMLInputElement;
+ Object.defineProperty(input, "files", { value: [file], writable: false });
+ input.dispatchEvent(new Event("change", { bubbles: true }));
- expect(onSend).not.toHaveBeenCalled();
- });
+ // Give the async staging a chance; a non-image is skipped.
+ await new Promise((r) => setTimeout(r, 0));
+ expect(screen.queryByRole("button", { name: "Remove image" })).not.toBeInTheDocument();
+ });
+
+ it("queues (steers) text-only and never forwards images", async () => {
+ // While running, the Send button becomes "Queue"; steering is text-only.
+ const onQueue = vi.fn();
+ const onSend = vi.fn();
+ const user = userEvent.setup();
+ const { container } = render(Composer, { props: { onSend, onQueue, status: "running" } });
+
+ const textarea = screen.getByRole("textbox", { name: "Message input" });
+ await user.type(textarea, "steer here");
+
+ // Also stage an image — it must NOT be forwarded on a queue.
+ const file = new File(["PNG"], "shot.png", { type: "image/png" });
+ const input = container.querySelector('input[type="file"]') as HTMLInputElement;
+ Object.defineProperty(input, "files", { value: [file], writable: false });
+ input.dispatchEvent(new Event("change", { bubbles: true }));
+ await vi.waitFor(() => {
+ expect(screen.getByRole("button", { name: "Remove image" })).toBeInTheDocument();
+ });
+
+ await user.click(screen.getByRole("button", { name: "Queue" }));
+ expect(onQueue).toHaveBeenCalledWith("steer here");
+ expect(onSend).not.toHaveBeenCalled();
+ });
});
describe("ModelSelector", () => {
- it("renders the options and current selection", () => {
- const models = ["openai/gpt-4", "anthropic/claude-3", "google/gemini"];
- render(ModelSelector, {
- props: { models, selected: "anthropic/claude-3", onSelect: vi.fn() },
- });
-
- const select = screen.getByRole("combobox", { name: "Model selector" });
- expect(select).toBeInTheDocument();
- expect(select).toHaveValue("anthropic/claude-3");
-
- const options = screen.getAllByRole("option");
- expect(options).toHaveLength(3);
- expect(options[0]).toHaveValue("openai/gpt-4");
- expect(options[1]).toHaveValue("anthropic/claude-3");
- expect(options[2]).toHaveValue("google/gemini");
- });
-
- it("calls onSelect on change", async () => {
- const onSelect = vi.fn();
- const user = userEvent.setup();
- const models = ["openai/gpt-4", "anthropic/claude-3"];
-
- render(ModelSelector, {
- props: { models, selected: "openai/gpt-4", onSelect },
- });
-
- const select = screen.getByRole("combobox", { name: "Model selector" });
- await user.selectOptions(select, "anthropic/claude-3");
-
- expect(onSelect).toHaveBeenCalledTimes(1);
- expect(onSelect).toHaveBeenCalledWith("anthropic/claude-3");
- });
+ const optionValues = (el: HTMLElement): string[] =>
+ within(el)
+ .getAllByRole("option")
+ .map((o) => (o as HTMLOptionElement).value);
+
+ it("renders a key selector (distinct keys) and a model selector (models for the current key)", () => {
+ const models = ["openai/gpt-4", "openai/gpt-4o", "anthropic/claude-3", "google/gemini"];
+ render(ModelSelector, {
+ props: { models, selected: "anthropic/claude-3", onSelect: vi.fn() },
+ });
+
+ const keySelect = screen.getByRole("combobox", { name: "Key selector" });
+ const modelSelect = screen.getByRole("combobox", { name: "Model selector" });
+ expect(keySelect).toHaveValue("anthropic");
+ expect(modelSelect).toHaveValue("claude-3");
+
+ expect(optionValues(keySelect)).toEqual(["openai", "anthropic", "google"]);
+ // only the models under the selected key
+ expect(optionValues(modelSelect)).toEqual(["claude-3"]);
+ });
+
+ it("selecting a key switches to the first model under it", async () => {
+ const onSelect = vi.fn();
+ const user = userEvent.setup();
+ const models = ["openai/gpt-4", "openai/gpt-4o", "anthropic/claude-3"];
+
+ render(ModelSelector, {
+ props: { models, selected: "openai/gpt-4o", onSelect },
+ });
+
+ await user.selectOptions(screen.getByRole("combobox", { name: "Key selector" }), "anthropic");
+
+ expect(onSelect).toHaveBeenCalledTimes(1);
+ expect(onSelect).toHaveBeenCalledWith("anthropic/claude-3");
+ });
+
+ it("selecting a model keeps the current key", async () => {
+ const onSelect = vi.fn();
+ const user = userEvent.setup();
+ const models = ["openai/gpt-4", "openai/gpt-4o"];
+
+ render(ModelSelector, {
+ props: { models, selected: "openai/gpt-4", onSelect },
+ });
+
+ await user.selectOptions(screen.getByRole("combobox", { name: "Model selector" }), "gpt-4o");
+
+ expect(onSelect).toHaveBeenCalledTimes(1);
+ expect(onSelect).toHaveBeenCalledWith("openai/gpt-4o");
+ });
+
+ it("marks vision-capable models in the model dropdown", () => {
+ const models = ["kimi/k2", "kimi/k1.5"];
+ const modelInfo = {
+ "kimi/k2": { vision: true },
+ "kimi/k1.5": { vision: false },
+ };
+ render(ModelSelector, {
+ props: { models, selected: "kimi/k2", onSelect: vi.fn(), modelInfo },
+ });
+
+ const modelSelect = screen.getByRole("combobox", { name: "Model selector" });
+ const options = within(modelSelect).getAllByRole("option");
+ expect(options).toHaveLength(2);
+ expect(options[0]?.textContent).toContain("vision");
+ expect(options[1]?.textContent).not.toContain("vision");
+ });
+
+ it("shows the vision indicator when the selected model is vision-capable", () => {
+ render(ModelSelector, {
+ props: {
+ models: ["kimi/k2"],
+ selected: "kimi/k2",
+ onSelect: vi.fn(),
+ modelInfo: { "kimi/k2": { vision: true } },
+ },
+ });
+ expect(screen.getByText(/sees images natively/)).toBeInTheDocument();
+ });
+
+ it("shows the vision-handoff hint when the selected model is non-vision", () => {
+ render(ModelSelector, {
+ props: {
+ models: ["umans/glm-5.2"],
+ selected: "umans/glm-5.2",
+ onSelect: vi.fn(),
+ modelInfo: { "umans/glm-5.2": { vision: false } },
+ },
+ });
+ expect(screen.getByText(/auto-described/i)).toBeInTheDocument();
+ expect(screen.queryByText(/sees images natively/)).not.toBeInTheDocument();
+ });
+
+ it("shows the handoff hint when modelInfo is absent", () => {
+ render(ModelSelector, {
+ props: { models: ["openai/gpt-4"], selected: "openai/gpt-4", onSelect: vi.fn() },
+ });
+ expect(screen.getByText(/auto-described/i)).toBeInTheDocument();
+ });
+});
+
+describe("ReasoningEffortSelector", () => {
+ it("renders null (never set) as the default level, marked '(default)'", () => {
+ render(ReasoningEffortSelector, { props: { persisted: null, save: vi.fn() } });
+
+ const select = screen.getByRole("combobox", { name: "Reasoning effort" });
+ expect(select).toHaveValue("high");
+ expect(within(select).getByRole("option", { name: "high (default)" })).toBeInTheDocument();
+ // All five ladder levels are offered.
+ expect(within(select).getAllByRole("option")).toHaveLength(5);
+ });
+
+ it("renders a persisted level as selected", () => {
+ render(ReasoningEffortSelector, { props: { persisted: "xhigh", save: vi.fn() } });
+
+ expect(screen.getByRole("combobox", { name: "Reasoning effort" })).toHaveValue("xhigh");
+ });
+
+ it("selecting a level saves it via the injected port and confirms", async () => {
+ const save = vi.fn(async (level: "low" | "medium" | "high" | "xhigh" | "max") => ({
+ ok: true as const,
+ reasoningEffort: level,
+ }));
+ const user = userEvent.setup();
+
+ render(ReasoningEffortSelector, { props: { persisted: null, save } });
+
+ await user.selectOptions(screen.getByRole("combobox", { name: "Reasoning effort" }), "max");
+
+ expect(save).toHaveBeenCalledTimes(1);
+ expect(save).toHaveBeenCalledWith("max");
+ await vi.waitFor(() => {
+ expect(screen.getByText(/applies from the next turn/i)).toBeInTheDocument();
+ });
+ expect(screen.getByRole("combobox", { name: "Reasoning effort" })).toHaveValue("max");
+ });
+
+ it("a failed save shows the error and reverts to the persisted value", async () => {
+ const save = vi.fn(async () => ({ ok: false as const, error: "nope" }));
+ const user = userEvent.setup();
+
+ render(ReasoningEffortSelector, { props: { persisted: "low", save } });
+
+ await user.selectOptions(screen.getByRole("combobox", { name: "Reasoning effort" }), "max");
+
+ await vi.waitFor(() => {
+ expect(screen.getByText("nope")).toBeInTheDocument();
+ });
+ expect(screen.getByRole("combobox", { name: "Reasoning effort" })).toHaveValue("low");
+ });
+
+ it("disables the select while a save is in flight (no double-fire)", async () => {
+ let resolveSave: ((r: { ok: true; reasoningEffort: "max" }) => void) | undefined;
+ const save = vi.fn(
+ () =>
+ new Promise<{ ok: true; reasoningEffort: "max" }>((resolve) => {
+ resolveSave = resolve;
+ }),
+ );
+ const user = userEvent.setup();
+
+ render(ReasoningEffortSelector, { props: { persisted: null, save } });
+
+ await user.selectOptions(screen.getByRole("combobox", { name: "Reasoning effort" }), "max");
+
+ expect(screen.getByRole("combobox", { name: "Reasoning effort" })).toBeDisabled();
+
+ resolveSave?.({ ok: true, reasoningEffort: "max" });
+ await vi.waitFor(() => {
+ expect(screen.getByRole("combobox", { name: "Reasoning effort" })).toBeEnabled();
+ });
+ });
});
diff --git a/src/features/chat/ui/ChatView.svelte b/src/features/chat/ui/ChatView.svelte
index cb6069b..e67ca5b 100644
--- a/src/features/chat/ui/ChatView.svelte
+++ b/src/features/chat/ui/ChatView.svelte
@@ -1,47 +1,368 @@
<script lang="ts">
- import type { RenderedChunk } from "../index";
+ import type { TurnProviderRetryEvent } from "@dispatch/wire";
+ import { groupRenderedChunks, resolveImageUrl, type RenderedChunk, viewProviderRetry } from "../index";
+ import {
+ interleaveTurnMetrics,
+ viewCacheRate,
+ viewExpectedCache,
+ viewStepMetrics,
+ viewTurnMetrics,
+ type TurnMetricsEntry,
+ } from "../../../core/metrics";
+ import { Markdown } from "../../markdown";
- let { chunks }: { chunks: readonly RenderedChunk[] } = $props();
+ const badgeClass = {
+ success: "badge-success",
+ warning: "badge-warning",
+ error: "badge-error",
+ } as const;
+
+ let {
+ chunks,
+ turnMetrics = [],
+ hasEarlier = false,
+ onShowEarlier,
+ thinkingKeyBase = 0,
+ providerRetry = null,
+ apiBaseUrl = "",
+ }: {
+ chunks: readonly RenderedChunk[];
+ turnMetrics?: readonly TurnMetricsEntry[];
+ /** Earlier history is unloaded (chat limit) and can be paged back in. */
+ hasEarlier?: boolean;
+ /** Page earlier history back in; the caller owns scroll-position preservation. */
+ onShowEarlier?: () => Promise<void>;
+ /**
+ * Ordinal base for thinking-collapse keys: the count of thinking chunks
+ * unloaded by the chat limit, so the remaining ordinals don't shift (and
+ * swap collapse state) when a trim removes older thinking blocks.
+ */
+ thinkingKeyBase?: number;
+ /**
+ * The latest `provider-retry` event for the current turn, or `null` when
+ * no retry is pending → renders the transient yellow "retrying…" banner.
+ * Never persisted (never part of the message history); coalesces to the
+ * newest attempt + delay, and is cleared when content resumes / turn ends.
+ */
+ providerRetry?: TurnProviderRetryEvent | null;
+ /**
+ * The HTTP API base URL (e.g. `http://localhost:24203`). Persisted image
+ * chunks carry a compact relative path (`/images/<conv>/<uuid>.png`); this
+ * base is prepended to render them. The optimistic echo's data URL and any
+ * absolute URL pass through unchanged (see `resolveImageUrl`). Defaults to
+ * "" (root-relative — a browser resolves `/images/…` against its origin).
+ */
+ apiBaseUrl?: string;
+ } = $props();
+
+ // True while a show-earlier page-in is awaited (disables the button).
+ let loadingEarlier = $state(false);
+
+ async function showEarlier() {
+ if (!onShowEarlier || loadingEarlier) return;
+ loadingEarlier = true;
+ try {
+ await onShowEarlier();
+ } finally {
+ loadingEarlier = false;
+ }
+ }
+
+ const groups = $derived(groupRenderedChunks(chunks));
+
+ const rows = $derived(interleaveTurnMetrics(groups, turnMetrics));
+
+ // Stable per-row keys. Thinking blocks get an ordinal key (`think<n>`) that
+ // survives the provisional→committed (seq null → seq N) transition, so the
+ // collapse's open/close state is NOT lost when a turn seals. The ordinal
+ // starts at `thinkingKeyBase` so keys also survive a chat-limit trim removing
+ // older thinking blocks. (App isolates these keys per conversation via {#key}.)
+ const keyedRows = $derived.by(() => {
+ let thinking = thinkingKeyBase;
+ return rows.map((row, i) => {
+ if (row.kind === "step-metrics") {
+ return { row, key: `s${row.step.stepId}` };
+ }
+ if (row.kind === "turn-metrics") {
+ return { row, key: `m${row.turn.turnId}` };
+ }
+ const group = row.group;
+ let key: string;
+ if (group.kind === "tool-batch") {
+ key = `b${group.stepId}`;
+ } else if (group.chunk.chunk.type === "thinking") {
+ key = `think${thinking++}`;
+ } else if (group.chunk.seq != null) {
+ key = `c${group.chunk.seq}`;
+ } else {
+ key = `p${i}`;
+ }
+ return { row, key };
+ });
+ });
</script>
-<div class="flex flex-col gap-2 p-4" role="log" aria-live="polite">
- {#each chunks as rendered, i (rendered.seq != null ? `c${rendered.seq}` : `p${i}`)}
- <div class="chat {rendered.role === 'user' ? 'chat-start' : 'chat-end'}">
- <div class="chat-header text-xs opacity-70">{rendered.role}</div>
- <div
- class="chat-bubble"
- class:chat-bubble-primary={rendered.role === "user"}
- class:chat-bubble-secondary={rendered.role === "assistant"}
- class:opacity-50={rendered.provisional}
- >
- {#if rendered.chunk.type === "text"}
- <p>{rendered.chunk.text}</p>
- {:else if rendered.chunk.type === "thinking"}
- <details>
- <summary>Thinking</summary>
- <p>{rendered.chunk.text}</p>
- </details>
- {:else if rendered.chunk.type === "tool-call"}
- <div class="text-sm">
- <strong>{rendered.chunk.toolName}</strong>
- <pre class="text-xs mt-1">{JSON.stringify(rendered.chunk.input, null, 2)}</pre>
- </div>
- {:else if rendered.chunk.type === "tool-result"}
- <div class="text-sm" class:text-error={rendered.chunk.isError}>
- <strong>{rendered.chunk.toolName}</strong>
- <pre class="text-xs mt-1">{rendered.chunk.content}</pre>
- </div>
- {:else if rendered.chunk.type === "error"}
- <div class="text-error" role="alert">
- {rendered.chunk.message}
- {#if rendered.chunk.code}
- <span class="text-xs opacity-70">[{rendered.chunk.code}]</span>
- {/if}
- </div>
- {:else if rendered.chunk.type === "system"}
- <div class="text-sm opacity-70">{rendered.chunk.text}</div>
- {/if}
- </div>
- </div>
- {/each}
+{#snippet chunkRow(rendered: RenderedChunk)}
+ {#if rendered.role === "user"}
+ <!-- User: a speech bubble, left-aligned. A user message may be multi-chunk
+ ([text, image, image, …]); each chunk renders in its own bubble. A
+ persisted image chunk's url is a compact relative path (`/images/…`)
+ served by the backend — resolve it against the API base. The
+ optimistic echo's data URL (and any absolute URL) passes through. -->
+ <div class="chat chat-start">
+ <div class="chat-bubble chat-bubble-primary">
+ {#if rendered.chunk.type === "text"}
+ <p>{rendered.chunk.text}</p>
+ {:else if rendered.chunk.type === "image"}
+ <img
+ src={resolveImageUrl(rendered.chunk.url, apiBaseUrl)}
+ alt={rendered.chunk.mimeType ?? "pasted image"}
+ loading="lazy"
+ decoding="async"
+ class="max-h-80 max-w-full rounded"
+ />
+ {/if}
+ </div>
+ </div>
+ {:else if rendered.chunk.type === "thinking"}
+ <!-- Thinking: a visible bubble (like tool cards), holding a checkbox collapse
+ (no arrow icon, smooth open/close). Title reads "Thinking" + loading dots
+ while generating, then "Thoughts" with no dots once complete. -->
+ <div class="chat chat-start [&>.chat-bubble]:max-w-5xl [&>.chat-bubble]:p-0">
+ <div class="chat-bubble w-full bg-transparent">
+ <div class="collapse w-full rounded-box bg-base-200 text-sm">
+ <input type="checkbox" aria-label="Toggle thoughts" />
+ <div class="collapse-title flex min-h-0 items-center gap-2 py-2 font-medium">
+ <span>{rendered.streaming ? "Thinking" : "Thoughts"}</span>
+ {#if rendered.streaming}
+ <span class="loading loading-dots loading-sm" aria-label="Generating"></span>
+ {/if}
+ </div>
+ <div class="collapse-content">
+ <p class="whitespace-pre-wrap">{rendered.chunk.text}</p>
+ </div>
+ </div>
+ </div>
+ </div>
+ {:else if rendered.chunk.type === "tool-call" || rendered.chunk.type === "tool-result"}
+ <!-- Single tool call/result: a collapsible card (collapsed by default,
+ like thinking). Title shows the tool name; content shows the
+ input/output. Same chat-start grid shim as the thinking block. -->
+ <div class="chat chat-start [&>.chat-bubble]:max-w-5xl [&>.chat-bubble]:p-0">
+ <div class="chat-bubble w-full bg-transparent">
+ {#if rendered.chunk.type === "tool-call"}
+ <div class="collapse w-full rounded-box bg-base-200 text-sm">
+ <input type="checkbox" aria-label="Toggle tool call" />
+ <div class="collapse-title flex min-h-0 items-center gap-2 py-2 font-medium">
+ <svg
+ class="h-4 w-4 opacity-60"
+ xmlns="http://www.w3.org/2000/svg"
+ viewBox="0 0 24 24"
+ fill="none"
+ stroke="currentColor"
+ stroke-width="2"
+ stroke-linecap="round"
+ stroke-linejoin="round"
+ ><path
+ d="M14.7 6.3a1 1 0 0 0 0 1.4l1.6 1.6a1 1 0 0 0 1.4 0l3.77-3.77a6 6 0 0 1-7.94 7.94l-6.91 6.91a2.12 2.12 0 0 1-3-3l6.91-6.91a6 6 0 0 1 7.94-7.94l-3.76 3.76z"
+ /></svg
+ >
+ <span>{rendered.chunk.toolName}</span>
+ </div>
+ <div class="collapse-content">
+ <pre class="overflow-x-auto text-xs">{JSON.stringify(
+ rendered.chunk.input,
+ null,
+ 2,
+ )}</pre>
+ </div>
+ </div>
+ {:else}
+ <div class="collapse w-full rounded-box bg-base-200 text-sm">
+ <input type="checkbox" aria-label="Toggle tool result" />
+ <div
+ class="collapse-title flex min-h-0 items-center gap-2 py-2 font-medium"
+ class:text-error={rendered.chunk.isError}
+ >
+ <svg
+ class="h-4 w-4 opacity-60"
+ xmlns="http://www.w3.org/2000/svg"
+ viewBox="0 0 24 24"
+ fill="none"
+ stroke="currentColor"
+ stroke-width="2"
+ stroke-linecap="round"
+ stroke-linejoin="round"
+ ><path
+ d="M14.7 6.3a1 1 0 0 0 0 1.4l1.6 1.6a1 1 0 0 0 1.4 0l3.77-3.77a6 6 0 0 1-7.94 7.94l-6.91 6.91a2.12 2.12 0 0 1-3-3l6.91-6.91a6 6 0 0 1 7.94-7.94l-3.76 3.76z"
+ /></svg
+ >
+ <span>{rendered.chunk.toolName}</span>
+ {#if rendered.chunk.isError}
+ <span class="badge badge-error badge-xs">error</span>
+ {/if}
+ </div>
+ <div class="collapse-content">
+ <pre class="max-h-96 overflow-auto text-xs">{rendered.chunk.content}</pre>
+ </div>
+ </div>
+ {/if}
+ </div>
+ </div>
+ {:else}
+ <!-- Assistant text / system / error: an INVISIBLE speech bubble — same
+ chat-start grid as the user bubble, so it inherits identical left spacing. -->
+ <div class="chat chat-start [&>.chat-bubble]:max-w-5xl">
+ <div class="chat-bubble w-full bg-transparent">
+ {#if rendered.chunk.type === "text"}
+ <Markdown text={rendered.chunk.text} streaming={rendered.streaming ?? false} />
+ {:else if rendered.chunk.type === "error"}
+ <div class="text-error" role="alert">
+ {rendered.chunk.message}
+ {#if rendered.chunk.code}
+ <span class="text-xs opacity-70">[{rendered.chunk.code}]</span>
+ {/if}
+ </div>
+ {:else if rendered.chunk.type === "system"}
+ <div class="text-sm opacity-70">{rendered.chunk.text}</div>
+ {/if}
+ </div>
+ </div>
+ {/if}
+{/snippet}
+
+<div class="flex flex-col gap-2 pt-4 pb-4 pl-6" role="log" aria-live="polite">
+ {#if hasEarlier && onShowEarlier}
+ <!-- Chat limit: older chunks are unloaded; offer to page them back in. -->
+ <div class="flex justify-center">
+ <button class="btn btn-ghost btn-xs" disabled={loadingEarlier} onclick={showEarlier}>
+ {#if loadingEarlier}
+ <span class="loading loading-spinner loading-xs" aria-hidden="true"></span>
+ Loading earlier messages…
+ {:else}
+ Show earlier messages
+ {/if}
+ </button>
+ </div>
+ {/if}
+ {#each keyedRows as { row, key } (key)}
+ {#if row.kind === "step-metrics"}
+ {@const sv = viewStepMetrics(row.step, row.index)}
+ <div class="chat chat-start">
+ <div class="chat-bubble w-full max-w-5xl bg-transparent p-0">
+ <div class="text-xs opacity-70">
+ {sv.label} · {sv.tokensLabel}
+ {#if sv.tps}
+ · {sv.tps}{/if}
+ {#if sv.genTotal}
+ · {sv.genTotal}{/if}
+ </div>
+ </div>
+ </div>
+ {:else if row.kind === "turn-metrics"}
+ {@const turnView = viewTurnMetrics(row.turn, row.turnNumber)}
+ {@const lastCache = viewCacheRate(row.turn.usage)}
+ {@const chatCache = viewCacheRate(row.cumulativeUsage)}
+ {@const retention = viewExpectedCache(row.turn.usage, row.prevTurnUsage)}
+ <div class="chat chat-start">
+ <div class="chat-bubble w-full max-w-5xl bg-transparent p-0">
+ <div class="flex flex-col gap-1 text-xs">
+ <div class="opacity-70">
+ {turnView.label} · {turnView.tokensLabel} ({turnView.breakdown})
+ {#if turnView.tps}
+ · {turnView.tps}{/if}
+ {#if turnView.duration}
+ · {turnView.duration}{/if}
+ </div>
+ <div class="flex flex-wrap items-center gap-x-3 gap-y-1">
+ <span class="flex items-center gap-1">
+ <span class="opacity-70">Last turn:</span>
+ <span class="badge badge-sm {badgeClass[lastCache.level]}">{lastCache.pct}%</span>
+ </span>
+ <span class="flex items-center gap-1">
+ <span class="opacity-70">Chat Total:</span>
+ <span class="badge badge-sm {badgeClass[chatCache.level]}">{chatCache.pct}%</span>
+ </span>
+ {#if retention}
+ <span class="flex items-center gap-1">
+ <span class="opacity-70">Retention:</span>
+ <span class="badge badge-sm {badgeClass[retention.level]}">{retention.pct}%</span>
+ </span>
+ {/if}
+ </div>
+ </div>
+ </div>
+ </div>
+ {:else if row.group.kind === "single"}
+ {@render chunkRow(row.group.chunk)}
+ {:else}
+ <!-- Batched tool calls (one step): each entry is a collapsible card.
+ Click to expand and see the input/output. -->
+ <div class="chat chat-start [&>.chat-bubble]:max-w-5xl [&>.chat-bubble]:p-0">
+ <div class="chat-bubble w-full bg-transparent">
+ <div class="flex flex-col gap-1">
+ {#each row.group.entries as entry (entry.call.toolCallId)}
+ <div class="collapse w-full rounded-box bg-base-200 text-sm">
+ <input type="checkbox" aria-label="Toggle tool call" />
+ <div class="collapse-title flex min-h-0 items-center gap-2 py-2 font-medium">
+ <svg
+ class="h-4 w-4 opacity-60"
+ xmlns="http://www.w3.org/2000/svg"
+ viewBox="0 0 24 24"
+ fill="none"
+ stroke="currentColor"
+ stroke-width="2"
+ stroke-linecap="round"
+ stroke-linejoin="round"
+ ><path
+ d="M14.7 6.3a1 1 0 0 0 0 1.4l1.6 1.6a1 1 0 0 0 1.4 0l3.77-3.77a6 6 0 0 1-7.94 7.94l-6.91 6.91a2.12 2.12 0 0 1-3-3l6.91-6.91a6 6 0 0 1 7.94-7.94l-3.76 3.76z"
+ /></svg
+ >
+ <span>{entry.call.toolName}</span>
+ {#if entry.result?.isError}
+ <span class="badge badge-error badge-xs">error</span>
+ {:else if entry.result === null}
+ <span class="loading loading-spinner loading-xs" aria-label="Running"></span>
+ {/if}
+ </div>
+ <div class="collapse-content">
+ <pre class="overflow-x-auto text-xs">{JSON.stringify(
+ entry.call.input,
+ null,
+ 2,
+ )}</pre>
+ {#if entry.result}
+ <pre
+ class="mt-1 max-h-96 overflow-auto text-xs"
+ class:text-error={entry.result.isError}>{entry.result.content}</pre>
+ {/if}
+ </div>
+ </div>
+ {/each}
+ </div>
+ </div>
+ </div>
+ {/if}
+ {/each}
+ {#if providerRetry}
+ {@const rv = viewProviderRetry(providerRetry)}
+ <!-- Transient yellow warning: a provider error is being retried with backoff.
+ NOT a message chunk (never persisted/replayed) — a live UI notification only,
+ shown where the reply would appear. Coalesces to the newest attempt + delay,
+ and is cleared (foldEvent) when content resumes or the turn ends. -->
+ <div class="chat chat-start [&>.chat-bubble]:max-w-5xl">
+ <div class="chat-bubble w-full bg-transparent">
+ <div class="alert alert-warning flex-wrap items-start gap-2 py-2 text-sm" role="status">
+ <div class="flex flex-wrap items-center gap-2 font-medium">
+ <span aria-hidden="true">⚠</span>
+ <span>{rv.attemptLabel} — retrying in {rv.delayLabel}…</span>
+ {#if rv.code}
+ <span class="badge badge-warning badge-sm font-mono">{rv.code}</span>
+ {/if}
+ </div>
+ <div class="w-full font-mono text-xs opacity-70">{rv.message}</div>
+ </div>
+ </div>
+ </div>
+ {/if}
</div>
diff --git a/src/features/chat/ui/CompactionView.svelte b/src/features/chat/ui/CompactionView.svelte
new file mode 100644
index 0000000..5014e5c
--- /dev/null
+++ b/src/features/chat/ui/CompactionView.svelte
@@ -0,0 +1,154 @@
+<script lang="ts">
+ export type CompactNowResult =
+ | { readonly ok: true; readonly messagesSummarized: number; readonly messagesKept: number }
+ | { readonly ok: false; readonly error: string };
+
+ export type SaveCompactPercentResult =
+ | { readonly ok: true; readonly percent: number }
+ | { readonly ok: false; readonly error: string };
+
+ let {
+ percent,
+ canCompact,
+ compactNow,
+ savePercent,
+ }: {
+ /** The conversation's auto-compact percent (0-100), or null when not yet fetched. 0 = disabled. */
+ percent: number | null;
+ /** Whether a real conversation is focused (a draft has nothing to compact). */
+ canCompact: boolean;
+ compactNow: () => Promise<CompactNowResult | null>;
+ savePercent: (percent: number) => Promise<SaveCompactPercentResult | null>;
+ } = $props();
+
+ const DEFAULT_PERCENT = 85;
+
+ let compacting = $state(false);
+ let compactError = $state<string | null>(null);
+ let compactResult = $state<{ summarized: number; kept: number } | null>(null);
+
+ let percentInput = $state("");
+ let savingPercent = $state(false);
+ let percentError = $state<string | null>(null);
+ let percentSaved = $state(false);
+
+ // Sync the input from the prop when it changes (focus switch / initial load).
+ let lastPercent = $state<number | null>(null);
+ $effect(() => {
+ if (percent !== lastPercent) {
+ lastPercent = percent;
+ percentInput = percent !== null ? String(percent) : "";
+ percentError = null;
+ percentSaved = false;
+ }
+ });
+
+ const percentLabel = $derived(
+ percent == null
+ ? "Loading…"
+ : percent === 0
+ ? "Disabled (manual only)"
+ : percent === DEFAULT_PERCENT
+ ? `${percent}% (default)`
+ : `${percent}%`,
+ );
+
+ async function handleCompact() {
+ if (compacting || !canCompact) return;
+ compacting = true;
+ compactError = null;
+ compactResult = null;
+ const result = await compactNow();
+ compacting = false;
+ if (result === null) return;
+ if (result.ok) {
+ compactResult = { summarized: result.messagesSummarized, kept: result.messagesKept };
+ } else {
+ compactError = result.error;
+ }
+ }
+
+ async function handleSavePercent() {
+ const value = Number.parseInt(percentInput, 10);
+ if (Number.isNaN(value) || value < 0 || value > 100) {
+ percentError = "Must be 0-100";
+ return;
+ }
+ savingPercent = true;
+ percentError = null;
+ percentSaved = false;
+ const result = await savePercent(value);
+ savingPercent = false;
+ if (result === null) return;
+ if (result.ok) {
+ percentSaved = true;
+ } else {
+ percentError = result.error;
+ }
+ }
+</script>
+
+<div class="flex flex-col gap-3">
+ <!-- Manual compaction -->
+ <section class="flex flex-col gap-1">
+ <span class="text-xs font-semibold uppercase opacity-60">Manual compaction</span>
+ <button
+ type="button"
+ class="btn btn-sm btn-outline"
+ disabled={!canCompact || compacting}
+ onclick={handleCompact}
+ >
+ {#if compacting}
+ <span class="loading loading-spinner loading-xs"></span>
+ Compacting…
+ {:else}
+ Compact now
+ {/if}
+ </button>
+ {#if !canCompact}
+ <p class="text-xs opacity-60">Open or start a conversation to compact its history.</p>
+ {:else if compactError}
+ <p class="text-xs text-error">{compactError}</p>
+ {:else if compactResult}
+ <p class="text-xs text-success">
+ Compacted — {compactResult.summarized} messages summarized, {compactResult.kept} kept.
+ </p>
+ {:else}
+ <p class="text-xs opacity-50">
+ Summarizes old messages into a system summary + retains the most recent messages.
+ </p>
+ {/if}
+ </section>
+
+ <!-- Auto-compact percent -->
+ <section class="flex flex-col gap-1">
+ <span class="text-xs font-semibold uppercase opacity-60">Auto-compact percent</span>
+ <div class="flex items-center gap-2">
+ <input
+ type="number"
+ class="input input-bordered input-sm w-24"
+ min="0"
+ max="100"
+ placeholder={String(DEFAULT_PERCENT)}
+ value={percentInput}
+ disabled={savingPercent}
+ onchange={handleSavePercent}
+ aria-label="Compact percent (0-100)"
+ />
+ <span class="text-xs opacity-60">%</span>
+ {#if savingPercent}
+ <span class="loading loading-spinner loading-xs"></span>
+ {/if}
+ </div>
+ <p class="text-xs opacity-50">
+ Current: {percentLabel}
+ <br />
+ 0 disables auto-compact. Default is {DEFAULT_PERCENT}%.
+ </p>
+ {#if percentError}
+ <p class="text-xs text-error">{percentError}</p>
+ {:else if percentSaved}
+ <p class="text-xs text-success">Saved.</p>
+ {/if}
+ </section>
+</div>
diff --git a/src/features/chat/ui/Composer.svelte b/src/features/chat/ui/Composer.svelte
index 3762340..04c28cd 100644
--- a/src/features/chat/ui/Composer.svelte
+++ b/src/features/chat/ui/Composer.svelte
@@ -1,33 +1,413 @@
<script lang="ts">
- let { onSend }: { onSend: (text: string) => void } = $props();
-
- let text = $state("");
-
- function handleSubmit(): void {
- const trimmed = text.trim();
- if (trimmed.length === 0) return;
- onSend(trimmed);
- text = "";
- }
-
- function handleKeydown(e: KeyboardEvent): void {
- if (e.key === "Enter" && !e.shiftKey) {
- e.preventDefault();
- handleSubmit();
- }
- }
+ import type { ImageInput } from "@dispatch/wire";
+ import { computeContextUsage, formatCompactTokens } from "../../../core/metrics";
+
+ const FALLBACK_CONTEXT_WINDOW = 1_000_000;
+ const MAX_LINES = 7;
+ /** Accept only raster images (the provider image-content formats). */
+ const IMAGE_ACCEPT = "image/png,image/jpeg,image/gif,image/webp";
+ /** Reject images larger than this before base64-encoding (keeps payloads sane). */
+ const MAX_IMAGE_BYTES = 8 * 1024 * 1024;
+
+ /** A staged image awaiting send: a stable id + the `ImageInput` to forward. */
+ interface StagedImage {
+ readonly id: string;
+ readonly input: ImageInput;
+ }
+
+ let {
+ onSend,
+ onQueue,
+ onStop,
+ contextSize = undefined,
+ contextWindow = undefined,
+ status = "idle",
+ }: {
+ /**
+ * Send a message (start a turn via `chat.send`). Carries any staged images
+ * as `ImageInput[]` (base64 data URLs or https URLs); the store forwards
+ * them on the WS `chat.send` op / `POST /chat` body. `images` is omitted
+ * (not an empty array) when none are staged, so the wire stays text-only.
+ */
+ onSend: (text: string, images?: ImageInput[]) => void;
+ /**
+ * Enqueue a steering message (`chat.queue`). When provided AND the status
+ * is `running`, the send button becomes a "Queue" button that steers the
+ * in-flight turn instead of starting a new one. Steering is text-only —
+ * it never carries images (a mid-turn injection has no image surface).
+ */
+ onQueue?: (text: string) => void;
+ /** Stop the in-flight generation (`POST /conversations/:id/stop`). */
+ onStop?: () => void;
+ // Current context occupancy — updated progressively during a turn (the
+ // latest step's input+output) and finalized to the turn's `contextSize` on
+ // seal, or `undefined` when unknown — the status bar then shows
+ // "— tokens", never 0%.
+ contextSize?: number | undefined;
+ /** Per-model context window (max tokens) from `GET /models` modelInfo. */
+ contextWindow?: number | undefined;
+ /**
+ * Coarse agent status for the status-bar icon. `queued` = the turn is in
+ * flight but waiting for a concurrency slot (CR-13) — shown as a loading
+ * RING (vs the loading DOTS of `running`/actively generating). Behaves like
+ * `running` for the send button (steer/stop).
+ */
+ status?: ComposerStatus;
+ } = $props();
+
+ export type ComposerStatus = "idle" | "running" | "queued" | "error";
+
+ let text = $state("");
+ let images = $state<StagedImage[]>([]);
+ let inputEl: HTMLTextAreaElement | undefined;
+ let fileInputEl: HTMLInputElement | undefined;
+ let dragOver = $state(false);
+
+ const hasText = $derived(text.trim().length > 0);
+ const hasImages = $derived(images.length > 0);
+ const canSend = $derived(hasText || hasImages);
+ const effectiveMax = $derived(contextWindow ?? FALLBACK_CONTEXT_WINDOW);
+ const usage = $derived(computeContextUsage(contextSize, effectiveMax));
+
+ // One button, three modes:
+ // - idle → "Send" (starts a turn via chat.send)
+ // - running/queued + text → "Queue" (steers via chat.queue — text only)
+ // - running/queued + empty → "Stop" (aborts via POST /stop)
+ // (`queued` behaves like `running` — the turn is in flight, just waiting for a
+ // concurrency slot; the user can still steer or stop it.)
+ // Steering never carries images: when running with images staged but no text,
+ // the images stay staged (queue is text-only). Images-without-text while running
+ // is an unusual case that still sends (the server auto-starts/resolves).
+ const inFlight = $derived(status === "running" || status === "queued");
+ const buttonMode = $derived.by<"send" | "queue" | "stop">(() => {
+ if (inFlight && !hasText && !hasImages && onStop !== undefined) return "stop";
+ if (inFlight && hasText && onQueue !== undefined) return "queue";
+ return "send";
+ });
+ const placeholder = $derived(
+ status === "queued"
+ ? "Queued for a slot…"
+ : status === "running"
+ ? "Steer the conversation..."
+ : "Type a message, paste or drop an image…",
+ );
+
+ // As the window fills, escalate color: calm → warning → danger.
+ function fillClass(pct: number): string {
+ if (pct >= 90) return "progress-error";
+ if (pct >= 70) return "progress-warning";
+ return "progress-success";
+ }
+
+ function resize(): void {
+ const el = inputEl;
+ if (!el) return;
+ el.style.height = "auto";
+ const style = getComputedStyle(el);
+ const lineHeight = Number.parseFloat(style.lineHeight) || 20;
+ const paddingY = Number.parseFloat(style.paddingTop) + Number.parseFloat(style.paddingBottom);
+ const borderY =
+ Number.parseFloat(style.borderTopWidth) + Number.parseFloat(style.borderBottomWidth);
+ const maxHeight = lineHeight * MAX_LINES + paddingY + borderY;
+ const next = Math.min(el.scrollHeight, maxHeight);
+ el.style.height = `${next}px`;
+ el.style.overflowY = el.scrollHeight > maxHeight ? "auto" : "hidden";
+ }
+
+ // Re-run resize whenever the value changes (covers programmatic clears too).
+ $effect(() => {
+ void text;
+ resize();
+ });
+
+ /** Read a File into a base64 data URL (`data:image/…;base64,…`). */
+ function fileToDataUrl(file: File): Promise<string> {
+ return new Promise((resolve, reject) => {
+ const reader = new FileReader();
+ reader.onload = () => {
+ if (typeof reader.result === "string") resolve(reader.result);
+ else reject(new Error("unreadable image"));
+ };
+ reader.onerror = () => reject(reader.error ?? new Error("read failed"));
+ reader.readAsDataURL(file);
+ });
+ }
+
+ let imgSeq = 0;
+ /** Stage a File as an image (skip non-images / oversized). Returns whether staged. */
+ async function stageFile(file: File): Promise<boolean> {
+ if (!file.type.startsWith("image/")) return false;
+ if (file.size > MAX_IMAGE_BYTES) return false;
+ const url = await fileToDataUrl(file);
+ // Prefer the file's declared MIME; fall back to the data URL's prefix.
+ const mimeType = file.type || undefined;
+ const id = `img-${Date.now()}-${imgSeq++}`;
+ images = [...images, { id, input: { url, ...(mimeType ? { mimeType } : {}) } }];
+ return true;
+ }
+
+ function removeImage(id: string): void {
+ images = images.filter((img) => img.id !== id);
+ }
+
+ /** Handle a paste anywhere in the form: extract image items from the clipboard. */
+ async function handlePaste(e: ClipboardEvent): Promise<void> {
+ const items = e.clipboardData?.items;
+ if (items === undefined) return;
+ let hadImage = false;
+ const staged: File[] = [];
+ for (const item of items) {
+ if (item.kind === "file" && item.type.startsWith("image/")) {
+ const file = item.getAsFile();
+ if (file !== null) {
+ staged.push(file);
+ hadImage = true;
+ }
+ }
+ }
+ if (!hadImage) return; // let the default text paste proceed
+ e.preventDefault(); // suppress pasting the image as a filename string
+ for (const file of staged) {
+ await stageFile(file);
+ }
+ }
+
+ /** File-picker <input type="file"> change. */
+ async function handleFilePick(e: Event): Promise<void> {
+ const target = e.currentTarget as HTMLInputElement;
+ const files = target.files;
+ if (files === null) return;
+ for (const file of files) {
+ await stageFile(file);
+ }
+ target.value = ""; // reset so picking the same file again re-fires change
+ }
+
+ /** Drop images onto the composer. */
+ async function handleDrop(e: DragEvent): Promise<void> {
+ dragOver = false;
+ const files = e.dataTransfer?.files;
+ if (files === undefined || files.length === 0) return;
+ const hadImage = Array.from(files).some((f) => f.type.startsWith("image/"));
+ if (!hadImage) return;
+ e.preventDefault();
+ for (const file of files) {
+ await stageFile(file);
+ }
+ }
+
+ function handleSubmit(): void {
+ const trimmed = text.trim();
+ // Allow a send with images even when text is empty (an image-only turn).
+ if (trimmed.length === 0 && !hasImages) return;
+ if (buttonMode === "queue") {
+ // Steering is text-only — never forward images.
+ onQueue?.(trimmed);
+ } else {
+ const toSend: ImageInput[] | undefined = hasImages
+ ? images.map((img) => img.input)
+ : undefined;
+ onSend(trimmed, toSend);
+ }
+ text = "";
+ images = [];
+ }
+
+ function handleKeydown(e: KeyboardEvent): void {
+ if (e.key === "Enter" && !e.shiftKey) {
+ e.preventDefault();
+ handleSubmit();
+ }
+ }
</script>
-<form class="flex gap-2 p-4" onsubmit={(e) => { e.preventDefault(); handleSubmit(); }}>
- <textarea
- class="textarea textarea-bordered flex-1"
- bind:value={text}
- onkeydown={handleKeydown}
- placeholder="Type a message..."
- rows="3"
- aria-label="Message input"
- ></textarea>
- <button class="btn btn-primary" type="submit" disabled={text.trim().length === 0}>
- Send
- </button>
+<form
+ class="flex flex-col"
+ onsubmit={(e) => {
+ e.preventDefault();
+ handleSubmit();
+ }}
+ ondrop={handleDrop}
+ ondragover={(e) => {
+ if (e.dataTransfer?.types?.includes("Files")) {
+ e.preventDefault();
+ dragOver = true;
+ }
+ }}
+ ondragleave={() => (dragOver = false)}
+>
+ <!-- Top bar: expanding textarea + image-attach button + single context-aware button -->
+ <div class="flex items-end gap-2 px-4 pt-3 pb-2">
+ <div
+ class="flex-1"
+ onpaste={handlePaste}
+ class:border-2={dragOver}
+ class:border-primary={dragOver}
+ class:border-dashed={dragOver}
+ class:rounded={dragOver}
+ >
+ <textarea
+ bind:this={inputEl}
+ class="textarea textarea-bordered w-full resize-none leading-normal !min-h-0 h-auto"
+ bind:value={text}
+ onkeydown={handleKeydown}
+ {placeholder}
+ rows="1"
+ aria-label="Message input"></textarea>
+ </div>
+
+ <!-- Hidden file picker (images only; multiple). -->
+ <input
+ bind:this={fileInputEl}
+ type="file"
+ accept={IMAGE_ACCEPT}
+ multiple
+ class="hidden"
+ onchange={handleFilePick}
+ />
+ <!-- Attach image button (opens the file picker). -->
+ <button
+ class="btn btn-ghost btn-square shrink-0"
+ type="button"
+ aria-label="Attach image"
+ title="Attach image"
+ onclick={() => fileInputEl?.click()}
+ >
+ <svg
+ xmlns="http://www.w3.org/2000/svg"
+ viewBox="0 0 24 24"
+ fill="none"
+ stroke="currentColor"
+ stroke-width="2"
+ stroke-linecap="round"
+ stroke-linejoin="round"
+ class="h-5 w-5"
+ >
+ <rect x="3" y="3" width="18" height="18" rx="2" ry="2"></rect>
+ <circle cx="8.5" cy="8.5" r="1.5"></circle>
+ <polyline points="21 15 16 10 5 21"></polyline>
+ </svg>
+ </button>
+
+ {#if buttonMode === "stop"}
+ <button
+ class="btn btn-error w-20 shrink-0"
+ type="button"
+ aria-label="Stop generation"
+ onclick={() => onStop?.()}
+ >
+ Stop
+ </button>
+ {:else}
+ <button class="btn btn-primary w-20 shrink-0" type="submit" disabled={!canSend}>
+ {buttonMode === "queue" ? "Queue" : "Send"}
+ </button>
+ {/if}
+ </div>
+
+ <!-- Staged image thumbnails (previews) with remove buttons. -->
+ {#if hasImages}
+ <div class="flex flex-wrap gap-2 px-4 pb-1">
+ {#each images as img (img.id)}
+ <div class="group relative h-20 w-20 shrink-0 overflow-hidden rounded border border-base-300">
+ <img
+ src={img.input.url}
+ alt={img.input.mimeType ?? "staged image"}
+ class="h-full w-full object-cover"
+ />
+ <button
+ class="btn btn-circle btn-xs absolute right-0 top-0 bg-base-100/80 hover:bg-error hover:text-error-content"
+ type="button"
+ aria-label="Remove image"
+ onclick={() => removeImage(img.id)}
+ >
+ <svg
+ xmlns="http://www.w3.org/2000/svg"
+ viewBox="0 0 24 24"
+ fill="none"
+ stroke="currentColor"
+ stroke-width="3"
+ stroke-linecap="round"
+ stroke-linejoin="round"
+ class="h-3 w-3"
+ >
+ <line x1="18" y1="6" x2="6" y2="18"></line>
+ <line x1="6" y1="6" x2="18" y2="18"></line>
+ </svg>
+ </button>
+ </div>
+ {/each}
+ </div>
+ {/if}
+
+ <!-- Bottom status bar: status icon · context-window fill · token count -->
+ <div class="flex items-center gap-2 px-4 pb-2 text-xs text-base-content/50">
+ <span class="shrink-0">
+ {#if status === "queued"}
+ <!-- Waiting for a concurrency slot — a ring (vs the dots of `running`). -->
+ <span
+ class="loading loading-ring loading-xs text-primary"
+ aria-label="Queued"
+ title="Waiting for a concurrency slot"
+ ></span>
+ {:else if status === "running"}
+ <span class="loading loading-dots loading-xs text-primary"></span>
+ {:else if status === "error"}
+ <svg
+ xmlns="http://www.w3.org/2000/svg"
+ viewBox="0 0 24 24"
+ fill="none"
+ stroke="currentColor"
+ stroke-width="2"
+ stroke-linecap="round"
+ stroke-linejoin="round"
+ class="h-4 w-4 text-error"
+ aria-label="Error"
+ >
+ <circle cx="12" cy="12" r="10"></circle>
+ <line x1="12" y1="8" x2="12" y2="12"></line>
+ <line x1="12" y1="16" x2="12.01" y2="16"></line>
+ </svg>
+ {:else}
+ <svg
+ xmlns="http://www.w3.org/2000/svg"
+ viewBox="0 0 24 24"
+ fill="none"
+ stroke="currentColor"
+ stroke-width="2.5"
+ stroke-linecap="round"
+ stroke-linejoin="round"
+ class="h-4 w-4 text-success"
+ aria-label="Idle"
+ >
+ <polyline points="20 6 9 17 4 12"></polyline>
+ </svg>
+ {/if}
+ </span>
+
+ {#if usage.percent !== null}
+ <progress
+ class="progress h-2 flex-1 {fillClass(usage.percent)}"
+ value={usage.percent}
+ max="100"
+ ></progress>
+ {:else}
+ <progress class="progress h-2 flex-1 opacity-40" value="0" max="100"></progress>
+ {/if}
+
+ <span class="shrink-0 whitespace-nowrap font-mono">
+ {#if usage.current !== null}
+ {formatCompactTokens(usage.current)}{#if usage.max !== null}<span
+ class="text-base-content/40"
+ >
+ / {formatCompactTokens(usage.max)}</span
+ >{/if}
+ {#if usage.percent !== null}
+ <span class="ml-1">· {usage.percent.toFixed(1)}%</span>
+ {/if}
+ {:else}
+ <span class="text-base-content/40">— tokens</span>
+ {/if}
+ </span>
+ </div>
</form>
diff --git a/src/features/chat/ui/ModelSelector.svelte b/src/features/chat/ui/ModelSelector.svelte
index 3e25ec3..11b9feb 100644
--- a/src/features/chat/ui/ModelSelector.svelte
+++ b/src/features/chat/ui/ModelSelector.svelte
@@ -1,22 +1,92 @@
<script lang="ts">
- let {
- models,
- selected,
- onSelect,
- }: {
- models: readonly string[];
- selected: string;
- onSelect: (model: string) => void;
- } = $props();
+ import type { ModelMetadata } from "@dispatch/transport-contract";
+ import { isVisionModel, joinModelName, modelKeys, modelsForKey, splitModelName } from "../model-select";
+
+ let {
+ models,
+ selected,
+ onSelect,
+ modelInfo = {},
+ }: {
+ models: readonly string[];
+ selected: string;
+ onSelect: (model: string) => void;
+ /**
+ * Per-model metadata from `GET /models` (`{ [name]: ModelMetadata }`).
+ * Used to show a "vision" badge next to models with `vision: true` (they
+ * natively accept images; others rely on the server's vision handoff).
+ * Optional — absent metadata → no badge (treated as non-vision).
+ */
+ modelInfo?: Readonly<Record<string, ModelMetadata>>;
+ } = $props();
+
+ const keys = $derived(modelKeys(models));
+ const current = $derived(splitModelName(selected));
+ const keyModels = $derived(modelsForKey(models, current.key));
+
+ // Whether the currently-selected full model name is vision-capable.
+ const selectedVision = $derived(isVisionModel(modelInfo, selected));
+
+ // Switching key jumps to the first model available under it.
+ function selectKey(key: string): void {
+ const first = modelsForKey(models, key)[0] ?? "";
+ onSelect(joinModelName(key, first));
+ }
+
+ function selectModel(model: string): void {
+ onSelect(joinModelName(current.key, model));
+ }
+
+ // The full `<key>/<model>` name for a model suffix under the current key.
+ function fullNameFor(modelSuffix: string): string {
+ return joinModelName(current.key, modelSuffix);
+ }
</script>
-<select
- class="select"
- value={selected}
- onchange={(e) => onSelect(e.currentTarget.value)}
- aria-label="Model selector"
->
- {#each models as model (model)}
- <option value={model}>{model}</option>
- {/each}
-</select>
+<div class="flex flex-col gap-2">
+ <select
+ class="select w-full"
+ value={current.key}
+ onchange={(e) => selectKey(e.currentTarget.value)}
+ aria-label="Key selector"
+ >
+ {#each keys as key (key)}
+ <option value={key}>{key}</option>
+ {/each}
+ </select>
+ <select
+ class="select w-full"
+ value={current.model}
+ onchange={(e) => selectModel(e.currentTarget.value)}
+ aria-label="Model selector"
+ >
+ {#each keyModels as model (model)}
+ <option value={model}>
+ {model}{#if isVisionModel(modelInfo, fullNameFor(model))} · vision{/if}
+ </option>
+ {/each}
+ </select>
+ {#if selectedVision}
+ <div class="flex items-center gap-1 text-xs text-base-content/60">
+ <svg
+ xmlns="http://www.w3.org/2000/svg"
+ viewBox="0 0 24 24"
+ fill="none"
+ stroke="currentColor"
+ stroke-width="2"
+ stroke-linecap="round"
+ stroke-linejoin="round"
+ class="h-3.5 w-3.5"
+ aria-hidden="true"
+ >
+ <path d="M1 12s4-8 11-8 11 8 11 8-4 8-11 8-11-8-11-8z"></path>
+ <circle cx="12" cy="12" r="3"></circle>
+ </svg>
+ <span>Vision — this model sees images natively</span>
+ </div>
+ {:else}
+ <div class="text-xs text-base-content/40">
+ Pasted images are auto-described (vision handoff)
+ </div>
+ {/if}
+</div>
diff --git a/src/features/chat/ui/ReasoningEffortSelector.svelte b/src/features/chat/ui/ReasoningEffortSelector.svelte
new file mode 100644
index 0000000..d982905
--- /dev/null
+++ b/src/features/chat/ui/ReasoningEffortSelector.svelte
@@ -0,0 +1,75 @@
+<script lang="ts">
+ import type { ReasoningEffort } from "@dispatch/transport-contract";
+ import {
+ effectiveEffort,
+ effortOptions,
+ isReasoningEffort,
+ type SaveReasoningEffort,
+ } from "../reasoning-effort";
+
+ let {
+ persisted,
+ save,
+ }: {
+ /** The conversation's persisted level, or null when never set (default applies). */
+ persisted: ReasoningEffort | null;
+ save: SaveReasoningEffort;
+ } = $props();
+
+ const options = effortOptions();
+
+ // The user's in-flight choice; null = mirror the (async-loaded) persisted prop.
+ // Re-mounted per conversation, so there is no cross-tab bleed.
+ let chosen = $state<ReasoningEffort | null>(null);
+ let saving = $state(false);
+ let error = $state<string | null>(null);
+ let justSaved = $state(false);
+
+ const selected = $derived(chosen ?? effectiveEffort(persisted));
+
+ async function handleChange(value: string) {
+ if (!isReasoningEffort(value) || saving) return;
+ chosen = value;
+ saving = true;
+ error = null;
+ justSaved = false;
+ const result = await save(value);
+ saving = false;
+ if (result === null) return;
+ if (result.ok) {
+ justSaved = true;
+ } else {
+ error = result.error;
+ chosen = null; // revert to the persisted value
+ }
+ }
+</script>
+
+<div class="flex flex-col gap-1">
+ <span class="text-xs font-semibold uppercase opacity-60">Reasoning effort</span>
+ <div class="flex items-center gap-2">
+ <select
+ class="select select-sm w-full"
+ value={selected}
+ disabled={saving}
+ onchange={(e) => handleChange(e.currentTarget.value)}
+ aria-label="Reasoning effort"
+ >
+ {#each options as option (option.value)}
+ <option value={option.value}>{option.label}</option>
+ {/each}
+ </select>
+ {#if saving}
+ <span class="loading loading-spinner loading-xs" aria-label="Saving reasoning effort"></span>
+ {/if}
+ </div>
+ {#if error}
+ <p class="text-xs text-error">{error}</p>
+ {:else if justSaved}
+ <p class="text-xs text-success">Saved — applies from the next turn.</p>
+ {:else}
+ <p class="text-xs opacity-50">
+ How long the model thinks before answering. Changing it can re-prefill the prompt cache once.
+ </p>
+ {/if}
+</div>
diff --git a/src/features/computer/index.ts b/src/features/computer/index.ts
new file mode 100644
index 0000000..05e56cc
--- /dev/null
+++ b/src/features/computer/index.ts
@@ -0,0 +1,31 @@
+export type {
+ Badge,
+ ComputerListResult,
+ ComputerSaveResult,
+ ComputerStatusResult,
+ ComputerStatusView,
+ ComputerView,
+ LoadComputerStatus,
+ LoadComputers,
+ SaveComputer,
+ TestComputer,
+ TestComputerResult,
+ TestResultView,
+} from "./logic/view-model";
+export {
+ formatHost,
+ knownHostLabel,
+ summarizeComputers,
+ viewComputer,
+ viewComputerStatus,
+ viewComputers,
+ viewTestResult,
+} from "./logic/view-model";
+export { default as ComputerField } from "./ui/ComputerField.svelte";
+export { default as ComputerSelect } from "./ui/ComputerSelect.svelte";
+
+/** Public module manifest — aggregated by the shell's "Loaded Modules" view. */
+export const manifest = {
+ name: "computer",
+ description: "Per-conversation / per-workspace SSH computer selection + status",
+} as const;
diff --git a/src/features/computer/logic/view-model.test.ts b/src/features/computer/logic/view-model.test.ts
new file mode 100644
index 0000000..45d459e
--- /dev/null
+++ b/src/features/computer/logic/view-model.test.ts
@@ -0,0 +1,167 @@
+import type { ComputerStatusResponse, TestComputerResponse } from "@dispatch/transport-contract";
+import type { ComputerEntry } from "@dispatch/wire";
+import { describe, expect, it } from "vitest";
+import {
+ formatHost,
+ knownHostLabel,
+ summarizeComputers,
+ viewComputer,
+ viewComputerStatus,
+ viewComputers,
+ viewTestResult,
+} from "./view-model";
+
+function computer(overrides: Partial<ComputerEntry> = {}): ComputerEntry {
+ return {
+ alias: "buildbox",
+ hostName: "10.0.0.5",
+ port: 22,
+ user: "deploy",
+ identityFile: "/home/deploy/.ssh/id_ed25519",
+ knownHost: true,
+ usageCount: 0,
+ ...overrides,
+ };
+}
+
+describe("formatHost", () => {
+ it("is user@host with no port when port is the SSH default (22)", () => {
+ expect(formatHost(computer({ port: 22 }))).toBe("[email protected]");
+ });
+
+ it("appends a non-default port", () => {
+ expect(formatHost(computer({ port: 2222 }))).toBe("[email protected]:2222");
+ });
+
+ it("falls back to the alias when hostName is empty", () => {
+ expect(formatHost(computer({ hostName: "" }))).toBe("deploy@buildbox");
+ });
+});
+
+describe("knownHostLabel", () => {
+ it("is 'known host' when known", () => {
+ expect(knownHostLabel(true)).toBe("known host");
+ });
+
+ it("is 'new host' when not known", () => {
+ expect(knownHostLabel(false)).toBe("new host");
+ });
+});
+
+describe("viewComputer", () => {
+ it("projects alias + hostSummary + identity + known-host label", () => {
+ const v = viewComputer(computer());
+ expect(v.alias).toBe("buildbox");
+ expect(v.hostSummary).toBe("[email protected]");
+ expect(v.identityFile).toBe("/home/deploy/.ssh/id_ed25519");
+ expect(v.knownHostLabel).toBe("known host");
+ expect(v.knownHost).toBe(true);
+ });
+
+ it("preserves a null identityFile (default key)", () => {
+ const v = viewComputer(computer({ identityFile: null }));
+ expect(v.identityFile).toBeNull();
+ });
+});
+
+describe("viewComputers", () => {
+ it("maps each entry (and drops usageCount from the view)", () => {
+ const views = viewComputers([
+ computer({ alias: "a", usageCount: 3 }),
+ computer({ alias: "b", hostName: "b.local", usageCount: 0 }),
+ ]);
+ expect(views).toHaveLength(2);
+ expect(views.at(0)?.alias).toBe("a");
+ expect(views.at(1)?.hostSummary).toBe("[email protected]");
+ });
+});
+
+describe("summarizeComputers", () => {
+ it("is 'No computers discovered' for an empty list", () => {
+ expect(summarizeComputers([])).toBe("No computers discovered");
+ });
+
+ it("is singular for one computer", () => {
+ expect(summarizeComputers([computer()])).toBe("1 computer");
+ });
+
+ it("is plural for many", () => {
+ expect(summarizeComputers([computer(), computer(), computer()])).toBe("3 computers");
+ });
+});
+
+describe("viewComputerStatus", () => {
+ function status(
+ state: ComputerStatusResponse["state"],
+ overrides: Partial<ComputerStatusResponse> = {},
+ ): ComputerStatusResponse {
+ return { alias: "buildbox", state, knownHost: true, ...overrides };
+ }
+
+ it("connected → success badge, not busy, no error", () => {
+ const v = viewComputerStatus(status("connected"));
+ expect(v.statusLabel).toBe("Connected");
+ expect(v.badge).toBe("success");
+ expect(v.busy).toBe(false);
+ expect(v.error).toBeNull();
+ });
+
+ it("connecting → warning badge + busy (spinner), no error", () => {
+ const v = viewComputerStatus(status("connecting"));
+ expect(v.statusLabel).toBe("Connecting…");
+ expect(v.badge).toBe("warning");
+ expect(v.busy).toBe(true);
+ expect(v.error).toBeNull();
+ });
+
+ it("disconnected → neutral badge, NOT busy (a stable idle state)", () => {
+ const v = viewComputerStatus(status("disconnected"));
+ expect(v.statusLabel).toBe("Disconnected");
+ expect(v.badge).toBe("neutral");
+ expect(v.busy).toBe(false);
+ expect(v.error).toBeNull();
+ });
+
+ it("error → error badge, not busy, surfaces the reason", () => {
+ const v = viewComputerStatus(status("error", { error: "auth refused" }));
+ expect(v.statusLabel).toBe("Error");
+ expect(v.badge).toBe("error");
+ expect(v.busy).toBe(false);
+ expect(v.error).toBe("auth refused");
+ });
+
+ it("error falls back to a default reason when the backend omits one", () => {
+ const v = viewComputerStatus(status("error"));
+ expect(v.error).toBe("Connection failed");
+ });
+
+ it("carries the knownHost flag through", () => {
+ const v = viewComputerStatus(status("connected", { knownHost: false }));
+ expect(v.knownHost).toBe(false);
+ });
+});
+
+describe("viewTestResult", () => {
+ it("ok=true → no error, 'Connection OK' label", () => {
+ const r = viewTestResult({ alias: "buildbox", ok: true } as TestComputerResponse);
+ expect(r.ok).toBe(true);
+ expect(r.error).toBeNull();
+ expect(r.label).toBe("Connection OK");
+ });
+
+ it("ok=false → surfaces the failure reason", () => {
+ const r = viewTestResult({
+ alias: "buildbox",
+ ok: false,
+ error: "host unreachable",
+ } as TestComputerResponse);
+ expect(r.ok).toBe(false);
+ expect(r.error).toBe("host unreachable");
+ expect(r.label).toBe("Failed");
+ });
+
+ it("ok=false without a reason falls back to a default", () => {
+ const r = viewTestResult({ alias: "buildbox", ok: false } as TestComputerResponse);
+ expect(r.error).toBe("Connection failed");
+ });
+});
diff --git a/src/features/computer/logic/view-model.ts b/src/features/computer/logic/view-model.ts
new file mode 100644
index 0000000..d489fb5
--- /dev/null
+++ b/src/features/computer/logic/view-model.ts
@@ -0,0 +1,184 @@
+import type { ComputerStatusResponse, TestComputerResponse } from "@dispatch/transport-contract";
+import type { Computer, ComputerEntry } from "@dispatch/wire";
+
+/**
+ * Pure core for the computer feature — zero DOM, zero effects, zero Svelte.
+ *
+ * A **computer** is a remote SSH target discovered from the user's `~/.ssh/config`
+ * (read-only — there is no CRUD store; the user edits their config to add one).
+ * The computer feature surfaces, per-conversation and per-workspace, WHICH
+ * computer a turn's tools execute on (the computer analog of `cwd`). It is a
+ * USER-facing control only: the computer is a tool-execution target forwarded to
+ * tools and NEVER part of the model prompt (so it does not affect prompt
+ * caching) — the agent never sees it.
+ *
+ * This module holds the pure logic: formatting a `Computer` for display, mapping a
+ * live `ComputerStatusResponse.state` to a display badge, and the one-line
+ * discovered-list summary. The effects (the HTTP list/get/status/test +
+ * per-conversation get/set) are INJECTED via the ports below; the composition root
+ * implements them.
+ */
+
+// ── Injected ports (consumer-defines-port; the composition root adapts the
+// store's HTTP calls to these shapes). Mirrors cwd-lsp's ports. ──────────────
+
+/** Outcome of `PUT /conversations/:id/computer`; `null` when no real conversation is focused. */
+export type ComputerSaveResult =
+ | { readonly ok: true; readonly computerId: string | null }
+ | { readonly ok: false; readonly error: string };
+
+export type SaveComputer = (computerId: string | null) => Promise<ComputerSaveResult | null>;
+
+/** Outcome of `GET /computers`; `null` when the list couldn't be loaded. */
+export type ComputerListResult =
+ | { readonly ok: true; readonly computers: readonly ComputerEntry[] }
+ | { readonly ok: false; readonly error: string };
+
+export type LoadComputers = () => Promise<ComputerListResult | null>;
+
+/** Outcome of `GET /computers/:alias/status`; `null` when no alias / not loaded. */
+export type ComputerStatusResult =
+ | { readonly ok: true; readonly status: ComputerStatusResponse }
+ | { readonly ok: false; readonly error: string };
+
+export type LoadComputerStatus = (alias: string) => Promise<ComputerStatusResult | null>;
+
+/** Outcome of `POST /computers/:alias/test`. */
+export type TestComputerResult =
+ | { readonly ok: true; readonly response: TestComputerResponse }
+ | { readonly ok: false; readonly error: string };
+
+export type TestComputer = (alias: string) => Promise<TestComputerResult | null>;
+
+// ── Computer → display view ──────────────────────────────────────────────────
+
+export type Badge = "success" | "warning" | "error" | "neutral";
+
+export interface ComputerView {
+ /** The SSH config `Host` alias — also the `computerId` users select. */
+ readonly alias: string;
+ /** A compact `user@host:port` connection string (the resolved config values). */
+ readonly hostSummary: string;
+ /** The resolved `IdentityFile`, or `null` = default `~/.ssh/id_*`. */
+ readonly identityFile: string | null;
+ /** Short label for the known-host indicator, e.g. "known host" / "new host". */
+ readonly knownHostLabel: string;
+ /** Whether the host's key is already in `~/.ssh/known_hosts`. */
+ readonly knownHost: boolean;
+}
+
+/**
+ * Format a computer's connection target as `user@host:port`, omitting the port
+ * when it is the SSH default (22) so the summary stays compact (mirrors how a user
+ * reads an ssh config `Host` block). `hostName` falls back to the alias itself
+ * (the backend resolves this, but this is defensive).
+ */
+export function formatHost(computer: Computer): string {
+ const host = computer.hostName || computer.alias;
+ const port = computer.port === 22 ? "" : `:${computer.port}`;
+ return `${computer.user}@${host}${port}`;
+}
+
+/** The display label for the known-host indicator. */
+export function knownHostLabel(knownHost: boolean): string {
+ return knownHost ? "known host" : "new host";
+}
+
+export function viewComputer(computer: Computer): ComputerView {
+ return {
+ alias: computer.alias,
+ hostSummary: formatHost(computer),
+ identityFile: computer.identityFile,
+ knownHostLabel: knownHostLabel(computer.knownHost),
+ knownHost: computer.knownHost,
+ };
+}
+
+export function viewComputers(computers: readonly ComputerEntry[]): readonly ComputerView[] {
+ return computers.map(viewComputer);
+}
+
+/**
+ * A one-line summary of the discovered list, e.g. "3 computers" / "No computers
+ * discovered" (the latter is the expected state until the `ssh` extension lands).
+ */
+export function summarizeComputers(computers: readonly ComputerEntry[]): string {
+ if (computers.length === 0) return "No computers discovered";
+ return `${computers.length} computer${computers.length === 1 ? "" : "s"}`;
+}
+
+// ── Connection status → display view ──────────────────────────────────────────
+
+export interface ComputerStatusView {
+ readonly alias: string;
+ readonly state: ComputerStatusResponse["state"];
+ readonly statusLabel: string;
+ readonly badge: Badge;
+ /** True while the state is transient (show a spinner). */
+ readonly busy: boolean;
+ /** The error reason when `state === "error"`, else null. */
+ readonly error: string | null;
+ /** Whether the host's key is already in `~/.ssh/known_hosts`. */
+ readonly knownHost: boolean;
+}
+
+/**
+ * Map a computer's live connection state to a display label + badge + busy flag.
+ * Mirrors the LSP/MCP status→badge pattern (each feature owns its own mapping —
+ * the enums differ, so they are not shared). Exhaustive vs the contract:
+ * `connected`→success, `connecting`→warning+busy, `disconnected`→neutral (a stable
+ * idle state, NOT busy), `error`→error.
+ */
+export function viewComputerStatus(status: ComputerStatusResponse): ComputerStatusView {
+ let statusLabel: string;
+ let badge: Badge;
+ let busy = false;
+ switch (status.state) {
+ case "connected":
+ statusLabel = "Connected";
+ badge = "success";
+ break;
+ case "connecting":
+ statusLabel = "Connecting…";
+ badge = "warning";
+ busy = true;
+ break;
+ case "disconnected":
+ statusLabel = "Disconnected";
+ badge = "neutral";
+ break;
+ case "error":
+ statusLabel = "Error";
+ badge = "error";
+ break;
+ }
+ return {
+ alias: status.alias,
+ state: status.state,
+ statusLabel,
+ badge,
+ busy,
+ error: status.state === "error" ? (status.error ?? "Connection failed") : null,
+ knownHost: status.knownHost,
+ };
+}
+
+// ── Test-connection result → display view ───────────────────────────────────
+
+export interface TestResultView {
+ readonly alias: string;
+ readonly ok: boolean;
+ /** The failure reason when `ok` is false, else null. */
+ readonly error: string | null;
+ /** A short result label, e.g. "Connection OK" / "Failed". */
+ readonly label: string;
+}
+
+export function viewTestResult(response: TestComputerResponse): TestResultView {
+ return {
+ alias: response.alias,
+ ok: response.ok,
+ error: response.ok ? null : (response.error ?? "Connection failed"),
+ label: response.ok ? "Connection OK" : "Failed",
+ };
+}
diff --git a/src/features/computer/ui/ComputerField.svelte b/src/features/computer/ui/ComputerField.svelte
new file mode 100644
index 0000000..6b54c88
--- /dev/null
+++ b/src/features/computer/ui/ComputerField.svelte
@@ -0,0 +1,211 @@
+<script lang="ts">
+ import type { ComputerStatusResponse } from "@dispatch/transport-contract";
+ import ComputerSelect from "./ComputerSelect.svelte";
+ import {
+ viewComputerStatus,
+ type ComputerStatusView,
+ type LoadComputerStatus,
+ type SaveComputer,
+ type TestComputer,
+ } from "../logic/view-model";
+ import type { ComputerEntry } from "@dispatch/wire";
+ import { untrack } from "svelte";
+
+ let {
+ computerId,
+ canEdit,
+ computers,
+ save,
+ loadStatus,
+ test,
+ }: {
+ /** The active conversation's persisted computer alias, or null (local/inherit). */
+ computerId: string | null;
+ /** Whether a real conversation is focused (a draft can't persist yet). */
+ canEdit: boolean;
+ /** Discovered computers from `GET /computers` (read-only). */
+ computers: readonly ComputerEntry[];
+ save: SaveComputer;
+ loadStatus: LoadComputerStatus;
+ test: TestComputer;
+ } = $props();
+
+ // ── Save: selecting a dropdown option persists immediately (PUT /computer). ──
+ let saving = $state(false);
+ let error = $state<string | null>(null);
+ let justSaved = $state(false);
+
+ async function select(computerId: string | null) {
+ if (saving || !canEdit) return;
+ saving = true;
+ error = null;
+ justSaved = false;
+ const result = await save(computerId);
+ saving = false;
+ if (result === null) return;
+ if (result.ok) {
+ justSaved = true;
+ } else {
+ error = result.error;
+ }
+ }
+
+ // ── Connection status: poll the selected computer's live state. Owned + ──
+ // disposed here (never leaks across conversations — the field re-mounts per
+ // conversation via the {#key} in App.svelte, like CwdField). No poll while
+ // local (no alias) or while a draft can't persist.
+ let statusView = $state<ComputerStatusView | null>(null);
+ let statusError = $state<string | null>(null);
+
+ async function refreshStatus() {
+ const alias = untrack(() => computerId);
+ if (alias === null) {
+ statusView = null;
+ statusError = null;
+ return;
+ }
+ const result = await loadStatus(alias);
+ if (result === null) return;
+ if (result.ok) {
+ statusView = viewComputerStatus(result.status);
+ statusError = null;
+ } else {
+ statusView = null;
+ statusError = result.error;
+ }
+ }
+
+ // Re-fetch on mount + whenever the selected alias changes (incl. after a save).
+ // Clear the test result so a stale ✓ from alias A doesn't persist for alias B.
+ $effect(() => {
+ void computerId;
+ testResult = null;
+ void refreshStatus();
+ });
+
+ // Poll the status while a computer is selected. `connecting` is transient, so
+ // a faster cadence helps it flip to `connected`; a connected host is stable.
+ const POLL_MS = 4000;
+ $effect(() => {
+ const alias = computerId;
+ if (alias === null) return;
+ const handle = setInterval(() => void refreshStatus(), POLL_MS);
+ return () => clearInterval(handle);
+ });
+
+ // ── Test connection: one-shot probe (POST /computers/:alias/test). ──────────
+ let testing = $state(false);
+ let testResult = $state<{ ok: boolean; error: string | null } | null>(null);
+
+ async function runTest() {
+ const alias = untrack(() => computerId);
+ if (alias === null || testing) return;
+ testing = true;
+ testResult = null;
+ const result = await test(alias);
+ testing = false;
+ if (result === null) return;
+ testResult = result.ok ? { ok: true, error: null } : { ok: false, error: result.error };
+ // Refresh the connection-status badge so it reflects the post-test state
+ // (clears a stale "connecting" spinner caught by the poll mid-test).
+ void refreshStatus();
+ }
+
+ const badgeClass = $derived.by(() => {
+ const b = statusView?.badge ?? "neutral";
+ switch (b) {
+ case "success":
+ return "badge-success";
+ case "warning":
+ return "badge-warning";
+ case "error":
+ return "badge-error";
+ default:
+ return "badge-ghost";
+ }
+ });
+</script>
+
+<div class="flex flex-col gap-1">
+ <span class="text-xs font-semibold uppercase opacity-60">Computer (SSH)</span>
+ <div class="flex items-center gap-2">
+ <ComputerSelect
+ value={computerId}
+ {computers}
+ disabled={!canEdit || saving}
+ onSelect={select}
+ />
+ {#if saving}
+ <span class="loading loading-spinner loading-xs shrink-0"></span>
+ {/if}
+ </div>
+
+ {#if !canEdit}
+ <p class="text-xs opacity-60">Start or open a conversation to set its computer.</p>
+ {:else if computerId !== null}
+ <!-- Connection status badge + Test affordance for the selected computer. -->
+ <div class="flex flex-wrap items-center gap-2">
+ {#if statusView}
+ <span
+ class="badge badge-sm {badgeClass}"
+ title={statusView.error ?? statusView.statusLabel}
+ >
+ {#if statusView.busy}
+ <span class="loading loading-spinner loading-[10px]"></span>
+ {/if}
+ {statusView.statusLabel}
+ </span>
+ {:else if statusError}
+ <span class="badge badge-sm badge-error" title={statusError}>Status error</span>
+ {:else}
+ <span class="badge badge-sm badge-ghost">—</span>
+ {/if}
+
+ <button
+ type="button"
+ class="btn btn-ghost btn-xs"
+ disabled={testing}
+ onclick={runTest}
+ title={testResult
+ ? testResult.ok
+ ? "Connection OK"
+ : (testResult.error ?? "Failed")
+ : "Test connection"}
+ >
+ {#if testing}
+ <span class="loading loading-spinner loading-[10px]"></span>
+ {:else if testResult?.ok}
+ <span class="text-success">✓</span>
+ {:else if testResult}
+ <span class="text-error">✗</span>
+ {:else}
+ Test
+ {/if}
+ </button>
+
+ {#if testResult}
+ <span class="text-xs {testResult.ok ? 'text-success' : 'text-error'}">
+ {testResult.ok ? "OK" : (testResult.error ?? "Failed")}
+ </span>
+ {/if}
+ </div>
+ {#if statusView?.error}
+ <p class="text-xs text-error">{statusView.error}</p>
+ {/if}
+ {:else if computers.length === 0}
+ <p class="text-xs opacity-50">
+ No computers discovered — add a `Host` block to your `~/.ssh/config` to use a remote computer.
+ </p>
+ {:else if justSaved && !error}
+ <p class="text-xs text-success">Saved.</p>
+ {/if}
+
+ {#if error}
+ <p class="text-xs text-error">{error}</p>
+ {/if}
+
+ <p class="text-xs opacity-50">
+ Where this conversation's tools run. `null` (Local) runs on the server; an alias runs over SSH.
+ Not seen by the agent.
+ </p>
+</div>
diff --git a/src/features/computer/ui/ComputerSelect.svelte b/src/features/computer/ui/ComputerSelect.svelte
new file mode 100644
index 0000000..c580b60
--- /dev/null
+++ b/src/features/computer/ui/ComputerSelect.svelte
@@ -0,0 +1,39 @@
+<script lang="ts">
+ import type { ComputerEntry } from "@dispatch/wire";
+
+ let {
+ value,
+ computers,
+ disabled = false,
+ onSelect,
+ }: {
+ /** The currently selected computer alias, or null for "Local (none)". */
+ value: string | null;
+ /** Discovered computers from `GET /computers` (read-only). */
+ computers: readonly ComputerEntry[];
+ disabled?: boolean;
+ onSelect: (computerId: string | null) => void;
+ } = $props();
+
+ // A `<select>` value is a string; map "" ↔ null (Local). The chosen option's
+ // value is the alias, with "" meaning "clear / local".
+ const selectValue = $derived(value ?? "");
+
+ function onChange(e: Event) {
+ const v = (e.currentTarget as HTMLSelectElement).value;
+ onSelect(v === "" ? null : v);
+ }
+</script>
+
+<select
+ class="select select-bordered select-sm w-full font-mono text-xs"
+ value={selectValue}
+ {disabled}
+ onchange={onChange}
+ aria-label="Computer"
+>
+ <option value="">Local (none)</option>
+ {#each computers as c (c.alias)}
+ <option value={c.alias}>{c.alias}{c.knownHost ? "" : " · new host"}</option>
+ {/each}
+</select>
diff --git a/src/features/concurrency/index.ts b/src/features/concurrency/index.ts
new file mode 100644
index 0000000..c0870e3
--- /dev/null
+++ b/src/features/concurrency/index.ts
@@ -0,0 +1,63 @@
+export type {
+ // Contract shapes re-exported for a single import surface.
+ ConcurrencyCooldownResponse,
+ ConcurrencyCooldownResult,
+ ConcurrencyDeleteResult,
+ ConcurrencyLimitEntry,
+ ConcurrencyLimitResponse,
+ ConcurrencyLimitResult,
+ ConcurrencyLimitsResponse,
+ ConcurrencyLimitsResult,
+ ConcurrencyStatusEntry,
+ ConcurrencyStatusResponse,
+ ConcurrencyStatusResult,
+ DeleteConcurrencyLimit,
+ GetConcurrencyCooldown,
+ GetConcurrencyLimit,
+ LoadConcurrencyLimits,
+ LoadConcurrencyStatus,
+ RestoreOutcome,
+ SaveConcurrencyCooldown,
+ SaveConcurrencyLimit,
+ SetConcurrencyCooldownRequest,
+ SetConcurrencyLimitRequest,
+} from "./logic/types";
+export type {
+ AutoReduceNotice,
+ Badge,
+ ConcurrencyLimitView,
+ ConcurrencyStatusView,
+} from "./logic/view-model";
+export {
+ autoReduceNotices,
+ cooldownLabel,
+ DEFAULT_COOLDOWN_MS,
+ formatPauseDuration,
+ normalizeConcurrencyCooldown,
+ normalizeConcurrencyLimit,
+ normalizeConcurrencyLimits,
+ normalizeConcurrencyStatus,
+ normalizeLimit,
+ parseCooldownInput,
+ parseLimitInput,
+ pauseLabel,
+ providerFromModel,
+ providerOptions,
+ statusLabel,
+ summarizeLimits,
+ summarizeStatus,
+ viewAutoReduce,
+ viewConcurrencyLimit,
+ viewConcurrencyLimits,
+ viewConcurrencyStatus,
+ viewConcurrencyStatuses,
+} from "./logic/view-model";
+export { default as AutoReduceBanner } from "./ui/AutoReduceBanner.svelte";
+export { default as ConcurrencyLimitRow } from "./ui/ConcurrencyLimitRow.svelte";
+export { default as ConcurrencyView } from "./ui/ConcurrencyView.svelte";
+
+/** Public module manifest — aggregated by the shell's "Loaded Modules" view. */
+export const manifest = {
+ name: "concurrency",
+ description: "Per-provider concurrency limits + live in-flight/queue status",
+} as const;
diff --git a/src/features/concurrency/logic/types.ts b/src/features/concurrency/logic/types.ts
new file mode 100644
index 0000000..a0c5f6b
--- /dev/null
+++ b/src/features/concurrency/logic/types.ts
@@ -0,0 +1,119 @@
+import type {
+ ConcurrencyCooldownResponse,
+ ConcurrencyLimitResponse,
+ ConcurrencyLimitsResponse,
+ ConcurrencyStatusEntry,
+ ConcurrencyStatusResponse,
+ SetConcurrencyCooldownRequest,
+ SetConcurrencyLimitRequest,
+} from "@dispatch/transport-contract";
+
+/**
+ * Pure core types for the concurrency feature — zero DOM, zero effects, zero
+ * Svelte.
+ *
+ * The backend tracks + limits how many concurrent token-generating API requests
+ * are in flight PER PROVIDER. When the cap is reached, additional requests queue
+ * and are granted slots oldest-agent-first; a 429 backoff PAUSES a provider's
+ * queue until `pausedUntil`. The cap is in-memory + per-provider (no persistence),
+ * managed via a plain REST surface under `/concurrency/...` provided by the
+ * `concurrency` extension. When the extension isn't loaded, the list + status
+ * endpoints return empty arrays (`{ limits: [] }` / `{ providers: [] }`); the
+ * single / PUT / DELETE endpoints return `503`.
+ *
+ * The data shapes ARE part of `@dispatch/transport-contract` (0.23.0), so they
+ * are imported directly (mirrors `mcp` / `computer`). The result types + injected
+ * ports below are FE-owned (the composition root adapts the store's HTTP calls to
+ * them). The endpoints are GLOBAL (not workspace- or conversation-scoped).
+ *
+ * Concurrency-fixes (additive, no version bump): each `ConcurrencyStatusEntry`
+ * now also carries `cooldownMs` (per-slot release cooldown, configurable +
+ * persisted), `autoReduced` (a 429 auto-reduced the limit by 1, one-way), and
+ * when auto-reduced, `autoReducedFrom` + a `notice` banner string. A manual
+ * `PUT /concurrency/limits/:providerId` clears `autoReduced`. Two new endpoints
+ * `GET`/`PUT /concurrency/cooldown/:providerId` view/change the cooldown.
+ */
+
+/** Re-export the contract shapes so consumers import a single surface. */
+export type {
+ ConcurrencyCooldownResponse,
+ ConcurrencyLimitResponse,
+ ConcurrencyLimitsResponse,
+ ConcurrencyStatusEntry,
+ ConcurrencyStatusResponse,
+ SetConcurrencyCooldownRequest,
+ SetConcurrencyLimitRequest,
+};
+
+/**
+ * A configured concurrency limit — one provider's cap on in-flight requests.
+ * Same shape as the contract's `ConcurrencyLimitResponse`.
+ */
+export interface ConcurrencyLimitEntry {
+ readonly providerId: string;
+ readonly limit: number;
+}
+
+// ── Result types (port outcomes; the store returns these directly) ──────────────
+
+/** Outcome of `GET /concurrency/limits` (all configured limits). */
+export type ConcurrencyLimitsResult =
+ | { readonly ok: true; readonly limits: readonly ConcurrencyLimitEntry[] }
+ | { readonly ok: false; readonly error: string };
+
+/**
+ * Outcome of `GET`/`PUT /concurrency/limits/:providerId` — the configured limit
+ * for one provider. `GET` returns `404` when the provider has no limit (surfaced
+ * as `ok: false`); `PUT` returns `400` for a non-positive-integer body.
+ */
+export type ConcurrencyLimitResult =
+ | { readonly ok: true; readonly providerId: string; readonly limit: number }
+ | { readonly ok: false; readonly error: string };
+
+/** Outcome of `DELETE /concurrency/limits/:providerId` (remove → unlimited). */
+export type ConcurrencyDeleteResult =
+ | { readonly ok: true; readonly providerId: string }
+ | { readonly ok: false; readonly error: string };
+
+/** Outcome of `GET /concurrency/status` (live status for every limited provider). */
+export type ConcurrencyStatusResult =
+ | { readonly ok: true; readonly providers: readonly ConcurrencyStatusEntry[] }
+ | { readonly ok: false; readonly error: string };
+
+/**
+ * Outcome of `GET`/`PUT /concurrency/cooldown/:providerId` — the per-slot
+ * release cooldown (ms) for one provider. `GET` returns `404` when the provider
+ * has no concurrency config at all (no limit, no cooldown); `PUT` returns `400`
+ * for a non-negative-integer body. Both return `503` when the extension isn't
+ * loaded.
+ */
+export type ConcurrencyCooldownResult =
+ | { readonly ok: true; readonly providerId: string; readonly cooldownMs: number }
+ | { readonly ok: false; readonly error: string };
+
+/**
+ * Outcome of an auto-reduce banner's "Restore to N" action (PUT the limit back
+ * to `autoReducedFrom` via `PUT /concurrency/limits/:providerId`). Carried back to
+ * the banner so a FAILED restore surfaces an inline error next to the button
+ * (instead of silently re-enabling the button / showing the error far away).
+ */
+export type RestoreOutcome = { readonly ok: true } | { readonly ok: false; readonly error: string };
+
+// ── Injected ports (consumer-defines-port; the composition root adapts the
+// store's HTTP calls to these shapes). ──────────────────────────────────────
+
+export type LoadConcurrencyLimits = () => Promise<ConcurrencyLimitsResult>;
+export type GetConcurrencyLimit = (providerId: string) => Promise<ConcurrencyLimitResult>;
+export type SaveConcurrencyLimit = (
+ providerId: string,
+ limit: number,
+) => Promise<ConcurrencyLimitResult>;
+export type DeleteConcurrencyLimit = (providerId: string) => Promise<ConcurrencyDeleteResult>;
+export type LoadConcurrencyStatus = () => Promise<ConcurrencyStatusResult>;
+/** `GET /concurrency/cooldown/:providerId` — read the per-slot release cooldown. */
+export type GetConcurrencyCooldown = (providerId: string) => Promise<ConcurrencyCooldownResult>;
+/** `PUT /concurrency/cooldown/:providerId` — set the per-slot release cooldown (non-negative int). */
+export type SaveConcurrencyCooldown = (
+ providerId: string,
+ cooldownMs: number,
+) => Promise<ConcurrencyCooldownResult>;
diff --git a/src/features/concurrency/logic/view-model.test.ts b/src/features/concurrency/logic/view-model.test.ts
new file mode 100644
index 0000000..6e6b770
--- /dev/null
+++ b/src/features/concurrency/logic/view-model.test.ts
@@ -0,0 +1,670 @@
+import type { ConcurrencyStatusEntry } from "@dispatch/transport-contract";
+import { describe, expect, it } from "vitest";
+import {
+ autoReduceNotices,
+ cooldownLabel,
+ DEFAULT_COOLDOWN_MS,
+ formatPauseDuration,
+ normalizeConcurrencyCooldown,
+ normalizeConcurrencyLimit,
+ normalizeConcurrencyLimits,
+ normalizeConcurrencyStatus,
+ parseCooldownInput,
+ parseLimitInput,
+ pauseLabel,
+ providerFromModel,
+ providerOptions,
+ statusLabel,
+ summarizeLimits,
+ summarizeStatus,
+ viewAutoReduce,
+ viewConcurrencyLimit,
+ viewConcurrencyLimits,
+ viewConcurrencyStatus,
+ viewConcurrencyStatuses,
+} from "./view-model";
+
+const status = (over: Partial<ConcurrencyStatusEntry> = {}): ConcurrencyStatusEntry => ({
+ providerId: "umans",
+ limit: 4,
+ inFlight: 2,
+ queued: 0,
+ paused: false,
+ cooldownMs: 350,
+ autoReduced: false,
+ ...over,
+});
+
+// ── parseLimitInput ───────────────────────────────────────────────────────────
+
+describe("parseLimitInput", () => {
+ it("accepts positive integers", () => {
+ expect(parseLimitInput("4")).toBe(4);
+ expect(parseLimitInput(" 12 ")).toBe(12);
+ expect(parseLimitInput("1")).toBe(1);
+ });
+
+ it("rejects zero, negatives, non-integers, and garbage", () => {
+ expect(parseLimitInput("0")).toBeNull();
+ expect(parseLimitInput("-1")).toBeNull();
+ expect(parseLimitInput("4.5")).toBeNull();
+ expect(parseLimitInput("")).toBeNull();
+ expect(parseLimitInput(" ")).toBeNull();
+ expect(parseLimitInput("abc")).toBeNull();
+ expect(parseLimitInput("4abc")).toBeNull();
+ });
+});
+
+// ── parseCooldownInput (non-negative integer — 0 is valid, unlike the limit) ──
+
+describe("parseCooldownInput", () => {
+ it("accepts zero + positive integers", () => {
+ expect(parseCooldownInput("0")).toBe(0);
+ expect(parseCooldownInput("350")).toBe(350);
+ expect(parseCooldownInput(" 100 ")).toBe(100);
+ });
+
+ it("rejects negatives, non-integers, and garbage", () => {
+ expect(parseCooldownInput("-1")).toBeNull();
+ expect(parseCooldownInput("4.5")).toBeNull();
+ expect(parseCooldownInput("")).toBeNull();
+ expect(parseCooldownInput("abc")).toBeNull();
+ expect(parseCooldownInput("100ms")).toBeNull();
+ });
+});
+
+// ── cooldownLabel ─────────────────────────────────────────────────────────────
+
+describe("cooldownLabel", () => {
+ it("0 → off label", () => {
+ expect(cooldownLabel(0)).toBe("0ms (off)");
+ });
+ it("sub-second → ms", () => {
+ expect(cooldownLabel(350)).toBe("350ms");
+ expect(cooldownLabel(999)).toBe("999ms");
+ });
+ it("≥1s → seconds (trims trailing .0)", () => {
+ expect(cooldownLabel(1000)).toBe("1s");
+ expect(cooldownLabel(1500)).toBe("1.5s");
+ expect(cooldownLabel(60_000)).toBe("60s");
+ });
+});
+
+// ── providerFromModel / providerOptions ───────────────────────────────────────
+
+describe("providerFromModel", () => {
+ it("takes the part before the first slash", () => {
+ expect(providerFromModel("openai/gpt-4o")).toBe("openai");
+ expect(providerFromModel("openai-compat/gpt-4o-mini")).toBe("openai-compat");
+ });
+ it("returns the whole string when there is no slash", () => {
+ expect(providerFromModel("umans")).toBe("umans");
+ });
+});
+
+describe("providerOptions", () => {
+ it("derives distinct provider ids from models, first-seen order", () => {
+ expect(
+ providerOptions(["openai/gpt-4o", "umans/umans-glm-5.2", "openai/gpt-4o-mini"], []),
+ ).toEqual(["openai", "umans"]);
+ });
+ it("unions with providers already carrying a configured limit", () => {
+ expect(providerOptions(["openai/gpt-4o"], [{ providerId: "anthropic", limit: 4 }])).toEqual([
+ "openai",
+ "anthropic",
+ ]);
+ });
+ it("does not duplicate a provider present in both models and limits", () => {
+ expect(providerOptions(["openai/gpt-4o"], [{ providerId: "openai", limit: 4 }])).toEqual([
+ "openai",
+ ]);
+ });
+ it("ignores models whose provider prefix is empty", () => {
+ expect(providerOptions(["/model-only", "umans/x"], [])).toEqual(["umans"]);
+ });
+ it("returns [] when there are no models and no limits", () => {
+ expect(providerOptions([], [])).toEqual([]);
+ });
+});
+
+// ── pauseLabel + formatPauseDuration ───────────────────────────────────────────
+
+describe("formatPauseDuration", () => {
+ it("formats seconds / minutes+seconds / hours+minutes", () => {
+ expect(formatPauseDuration(30_000)).toBe("30s");
+ expect(formatPauseDuration(65_000)).toBe("1m 05s");
+ expect(formatPauseDuration(3_660_000)).toBe("1h 01m");
+ });
+
+ it("non-positive → resuming", () => {
+ expect(formatPauseDuration(0)).toBe("resuming");
+ expect(formatPauseDuration(-5_000)).toBe("resuming");
+ });
+});
+
+describe("pauseLabel", () => {
+ it("null when not paused", () => {
+ expect(pauseLabel(false, undefined, 0)).toBeNull();
+ expect(pauseLabel(false, 10_000, 0)).toBeNull();
+ });
+
+ it("'paused' (bare) when paused without a usable timestamp", () => {
+ expect(pauseLabel(true, undefined, 0)).toBe("paused");
+ expect(pauseLabel(true, null, 0)).toBe("paused");
+ expect(pauseLabel(true, Number.NaN, 0)).toBe("paused");
+ });
+
+ it("countdown when paused with a future timestamp", () => {
+ const now = 1_000_000;
+ expect(pauseLabel(true, now + 30_000, now)).toBe("paused — resumes in 30s");
+ expect(pauseLabel(true, now + 65_000, now)).toBe("paused — resumes in 1m 05s");
+ });
+
+ it("'paused' (bare) when the timestamp is missing, non-finite, or expired", () => {
+ expect(pauseLabel(true, 0, 1_000)).toBe("paused");
+ expect(pauseLabel(true, 1_000, 2_000)).toBe("paused");
+ expect(pauseLabel(true, Number.NaN, 0)).toBe("paused");
+ // The countdown prefix only appears with a FUTURE timestamp:
+ expect(pauseLabel(true, 2_000, 1_000)).toBe("paused — resumes in 1s");
+ });
+});
+
+// ── viewConcurrencyStatus ──────────────────────────────────────────────────────
+
+describe("viewConcurrencyStatus", () => {
+ it("serving under capacity → success badge, in-flight label, no queue", () => {
+ const v = viewConcurrencyStatus(status({ inFlight: 2, limit: 4, queued: 0 }), 0);
+ expect(v.inFlightLabel).toBe("2/4");
+ expect(v.queuedLabel).toBe("no queue");
+ expect(v.pausedLabel).toBeNull();
+ expect(v.badge).toBe("success");
+ expect(v.busy).toBe(false);
+ });
+
+ it("at capacity with a queue → warning badge + busy (spinner)", () => {
+ const v = viewConcurrencyStatus(status({ inFlight: 4, limit: 4, queued: 3 }), 0);
+ expect(v.inFlightLabel).toBe("4/4");
+ expect(v.queuedLabel).toBe("3 queued");
+ expect(v.badge).toBe("warning");
+ expect(v.busy).toBe(true);
+ });
+
+ it("idle (no in-flight) → neutral badge, not busy", () => {
+ const v = viewConcurrencyStatus(status({ inFlight: 0, limit: 4, queued: 0 }), 0);
+ expect(v.badge).toBe("neutral");
+ expect(v.busy).toBe(false);
+ expect(v.inFlightLabel).toBe("0/4");
+ });
+
+ it("paused → warning badge + pause countdown label", () => {
+ const now = 1_000_000;
+ const v = viewConcurrencyStatus(
+ status({ paused: true, pausedUntil: now + 30_000, inFlight: 4, limit: 4, queued: 3 }),
+ now,
+ );
+ expect(v.paused).toBe(true);
+ expect(v.pausedLabel).toBe("paused — resumes in 30s");
+ expect(v.badge).toBe("warning");
+ expect(v.busy).toBe(true);
+ });
+
+ it("at capacity but no queue → success (busy only when queuing)", () => {
+ const v = viewConcurrencyStatus(status({ inFlight: 4, limit: 4, queued: 0 }), 0);
+ expect(v.badge).toBe("success");
+ expect(v.busy).toBe(false);
+ });
+
+ it("normalizes garbage counts to 0 and a malformed limit to 1", () => {
+ const v = viewConcurrencyStatus(
+ {
+ providerId: "x",
+ limit: -3,
+ inFlight: Number.NaN,
+ queued: "oops" as unknown as number,
+ paused: false,
+ cooldownMs: Number.NaN,
+ autoReduced: false,
+ },
+ 0,
+ );
+ expect(v.limit).toBe(1);
+ expect(v.inFlight).toBe(0);
+ expect(v.queued).toBe(0);
+ expect(v.inFlightLabel).toBe("0/1");
+ expect(v.cooldownMs).toBe(DEFAULT_COOLDOWN_MS);
+ });
+
+ it("viewConcurrencyStatuses maps a list preserving order", () => {
+ const views = viewConcurrencyStatuses(
+ [status({ providerId: "a" }), status({ providerId: "b" })],
+ 0,
+ );
+ expect(views.map((v) => v.providerId)).toEqual(["a", "b"]);
+ });
+
+ it("carries cooldownMs + label + autoReduced fields onto the view", () => {
+ const v = viewConcurrencyStatus(status({ cooldownMs: 1500 }), 0);
+ expect(v.cooldownMs).toBe(1500);
+ expect(v.cooldownLabel).toBe("1.5s");
+ expect(v.autoReduced).toBe(false);
+ expect(v.autoReducedFrom).toBeNull();
+ });
+
+ it("auto-reduced → warning badge (not busy) + autoReducedFrom carried", () => {
+ const v = viewConcurrencyStatus(
+ status({ limit: 3, autoReduced: true, autoReducedFrom: 4, inFlight: 0 }),
+ 0,
+ );
+ expect(v.autoReduced).toBe(true);
+ expect(v.autoReducedFrom).toBe(4);
+ expect(v.badge).toBe("warning");
+ // autoReduced alone does NOT flip busy (a reduced limit still admits agents).
+ expect(v.busy).toBe(false);
+ });
+});
+
+// ── statusLabel (the row's status badge word) ──────────────────────────────────
+
+describe("statusLabel", () => {
+ it("idle (no in-flight) → Idle", () => {
+ expect(
+ statusLabel(viewConcurrencyStatus(status({ inFlight: 0, limit: 4, queued: 0 }), 0)),
+ ).toBe("Idle");
+ });
+
+ it("serving under capacity → Active", () => {
+ expect(
+ statusLabel(viewConcurrencyStatus(status({ inFlight: 2, limit: 4, queued: 0 }), 0)),
+ ).toBe("Active");
+ });
+
+ it("at capacity with a queue → At capacity", () => {
+ expect(
+ statusLabel(viewConcurrencyStatus(status({ inFlight: 4, limit: 4, queued: 3 }), 0)),
+ ).toBe("At capacity");
+ });
+
+ it("at capacity but no queue → Active (not At capacity)", () => {
+ expect(
+ statusLabel(viewConcurrencyStatus(status({ inFlight: 4, limit: 4, queued: 0 }), 0)),
+ ).toBe("Active");
+ });
+
+ it("paused → Paused (regardless of in-flight/queue)", () => {
+ expect(
+ statusLabel(
+ viewConcurrencyStatus(status({ paused: true, inFlight: 4, limit: 4, queued: 3 }), 0),
+ ),
+ ).toBe("Paused");
+ });
+});
+
+// ── viewAutoReduce / autoReduceNotices (the auto-reduce banner view) ───────────
+
+describe("viewAutoReduce", () => {
+ it("returns null when not auto-reduced", () => {
+ expect(viewAutoReduce(status({ autoReduced: false }))).toBeNull();
+ });
+
+ it("uses the backend notice verbatim + carries from/current limits", () => {
+ const notice = viewAutoReduce(
+ status({
+ limit: 3,
+ autoReduced: true,
+ autoReducedFrom: 4,
+ notice: "Concurrency limit auto-reduced to 3 after a 429.",
+ }),
+ );
+ expect(notice).toEqual({
+ providerId: "umans",
+ message: "Concurrency limit auto-reduced to 3 after a 429.",
+ fromLimit: 4,
+ currentLimit: 3,
+ });
+ });
+
+ it("synthesizes a fallback notice when the backend notice is absent/empty", () => {
+ expect(viewAutoReduce(status({ limit: 3, autoReduced: true, autoReducedFrom: 4 }))).toEqual({
+ providerId: "umans",
+ message: "Concurrency limit auto-reduced to 3 after a 429 — restore manually when ready.",
+ fromLimit: 4,
+ currentLimit: 3,
+ });
+ expect(
+ viewAutoReduce(status({ limit: 3, autoReduced: true, autoReducedFrom: 4, notice: "" })),
+ ).not.toBeNull();
+ });
+
+ it("falls back to currentLimit+1 when autoReducedFrom is missing/garbage", () => {
+ const notice = viewAutoReduce(status({ limit: 3, autoReduced: true }));
+ expect(notice?.fromLimit).toBe(4); // 3 + 1
+ });
+});
+
+describe("autoReduceNotices", () => {
+ it("collects one banner per auto-reduced provider (input order), empty when none", () => {
+ expect(autoReduceNotices([status({ providerId: "a" })])).toEqual([]);
+ const out = autoReduceNotices([
+ status({ providerId: "a", autoReduced: true, autoReducedFrom: 4, limit: 3 }),
+ status({ providerId: "b" }),
+ status({ providerId: "c", autoReduced: true, autoReducedFrom: 2, limit: 1 }),
+ ]);
+ expect(out.map((n) => n.providerId)).toEqual(["a", "c"]);
+ expect(out[1]?.fromLimit).toBe(2);
+ });
+});
+
+// ── viewConcurrencyLimit ───────────────────────────────────────────────────────
+
+describe("viewConcurrencyLimit", () => {
+ it("passes through id + normalizes the limit", () => {
+ const v = viewConcurrencyLimit({ providerId: "umans", limit: 4 });
+ expect(v.providerId).toBe("umans");
+ expect(v.limit).toBe(4);
+ });
+
+ it("clamps a malformed limit to 1", () => {
+ expect(viewConcurrencyLimit({ providerId: "x", limit: 0 }).limit).toBe(1);
+ expect(viewConcurrencyLimit({ providerId: "x", limit: -2 }).limit).toBe(1);
+ expect(viewConcurrencyLimit({ providerId: "x", limit: 2.9 }).limit).toBe(2);
+ });
+
+ it("viewConcurrencyLimits maps a list preserving order", () => {
+ const views = viewConcurrencyLimits([
+ { providerId: "a", limit: 1 },
+ { providerId: "b", limit: 2 },
+ ]);
+ expect(views.map((v) => v.providerId)).toEqual(["a", "b"]);
+ });
+});
+
+// ── summarizeLimits / summarizeStatus ──────────────────────────────────────────
+
+describe("summarizeLimits", () => {
+ it("empty → No limits configured", () => {
+ expect(summarizeLimits([])).toBe("No limits configured");
+ });
+ it("counts limits (singular/plural)", () => {
+ expect(summarizeLimits([{ providerId: "a", limit: 1 }])).toBe("1 limit configured");
+ expect(
+ summarizeLimits([
+ { providerId: "a", limit: 1 },
+ { providerId: "b", limit: 2 },
+ ]),
+ ).toBe("2 limits configured");
+ });
+});
+
+describe("summarizeStatus", () => {
+ it("empty → No limits configured", () => {
+ expect(summarizeStatus([], 0)).toBe("No limits configured");
+ });
+ it("aggregates providers + in-flight totals", () => {
+ const s = summarizeStatus(
+ [
+ status({ providerId: "a", limit: 4, inFlight: 2 }),
+ status({ providerId: "b", limit: 6, inFlight: 3 }),
+ ],
+ 0,
+ );
+ expect(s).toBe("2 providers · 5/10 in flight");
+ });
+ it("includes queued + paused fragments only when non-zero", () => {
+ const s = summarizeStatus(
+ [
+ status({ providerId: "a", limit: 4, inFlight: 4, queued: 2 }),
+ status({
+ providerId: "b",
+ limit: 4,
+ inFlight: 1,
+ queued: 0,
+ paused: true,
+ pausedUntil: 1000,
+ }),
+ ],
+ 0,
+ );
+ expect(s).toBe("2 providers · 5/8 in flight · 2 queued · 1 paused");
+ });
+ it("singular provider", () => {
+ expect(summarizeStatus([status({ providerId: "a", limit: 4, inFlight: 1 })], 0)).toBe(
+ "1 provider · 1/4 in flight",
+ );
+ });
+ it("includes an auto-reduced fragment only when non-zero", () => {
+ const s = summarizeStatus(
+ [
+ status({ providerId: "a", limit: 3, inFlight: 1, autoReduced: true, autoReducedFrom: 4 }),
+ status({ providerId: "b", limit: 4, inFlight: 1 }),
+ ],
+ 0,
+ );
+ expect(s).toBe("2 providers · 2/7 in flight · 1 auto-reduced");
+ });
+});
+
+// ── Network-seam normalizers ───────────────────────────────────────────────────
+
+describe("normalizeConcurrencyLimits", () => {
+ it("coerces a well-formed body", () => {
+ const limits = normalizeConcurrencyLimits({
+ limits: [
+ { providerId: "umans", limit: 4 },
+ { providerId: "openai-compat", limit: 5 },
+ ],
+ });
+ expect(limits).toEqual([
+ { providerId: "umans", limit: 4 },
+ { providerId: "openai-compat", limit: 5 },
+ ]);
+ });
+
+ it("non-array / missing limits → []", () => {
+ expect(normalizeConcurrencyLimits({})).toEqual([]);
+ expect(normalizeConcurrencyLimits({ limits: "nope" })).toEqual([]);
+ expect(normalizeConcurrencyLimits(null)).toEqual([]);
+ expect(normalizeConcurrencyLimits(undefined)).toEqual([]);
+ });
+
+ it("drops entries without a provider id + clamps limits", () => {
+ const limits = normalizeConcurrencyLimits({
+ limits: [
+ { providerId: "umans", limit: 4 },
+ { providerId: "", limit: 9 },
+ { providerId: 123, limit: 1 },
+ { limit: 2 },
+ { providerId: "anthropic", limit: -5 },
+ ],
+ });
+ expect(limits).toEqual([
+ { providerId: "umans", limit: 4 },
+ { providerId: "anthropic", limit: 1 },
+ ]);
+ });
+});
+
+describe("normalizeConcurrencyLimit", () => {
+ it("coerces a well-formed single response", () => {
+ expect(normalizeConcurrencyLimit({ providerId: "umans", limit: 4 })).toEqual({
+ providerId: "umans",
+ limit: 4,
+ });
+ });
+ it("null when the provider id is missing/non-string", () => {
+ expect(normalizeConcurrencyLimit({ limit: 4 })).toBeNull();
+ expect(normalizeConcurrencyLimit({ providerId: "", limit: 4 })).toBeNull();
+ expect(normalizeConcurrencyLimit(null)).toBeNull();
+ });
+ it("clamps a malformed limit to 1", () => {
+ expect(normalizeConcurrencyLimit({ providerId: "x", limit: 0 })).toEqual({
+ providerId: "x",
+ limit: 1,
+ });
+ });
+});
+
+describe("normalizeConcurrencyStatus", () => {
+ it("coerces a well-formed body, preserving pausedUntil only when present", () => {
+ const now = Date.now();
+ const providers = normalizeConcurrencyStatus({
+ providers: [
+ { providerId: "umans", limit: 4, inFlight: 2, queued: 1, paused: false },
+ {
+ providerId: "openai-compat",
+ limit: 5,
+ inFlight: 5,
+ queued: 3,
+ paused: true,
+ pausedUntil: now,
+ },
+ ],
+ });
+ expect(providers).toHaveLength(2);
+ const [first, second] = providers;
+ expect(first).toEqual({
+ providerId: "umans",
+ limit: 4,
+ inFlight: 2,
+ queued: 1,
+ paused: false,
+ cooldownMs: 350,
+ autoReduced: false,
+ });
+ expect(first !== undefined && !("pausedUntil" in first)).toBe(true);
+ expect(second).toEqual({
+ providerId: "openai-compat",
+ limit: 5,
+ inFlight: 5,
+ queued: 3,
+ paused: true,
+ pausedUntil: now,
+ cooldownMs: 350,
+ autoReduced: false,
+ });
+ });
+
+ it("non-array / missing providers → []", () => {
+ expect(normalizeConcurrencyStatus({})).toEqual([]);
+ expect(normalizeConcurrencyStatus({ providers: 42 })).toEqual([]);
+ expect(normalizeConcurrencyStatus(null)).toEqual([]);
+ });
+
+ it("drops entries without a provider id + clamps counts", () => {
+ const providers = normalizeConcurrencyStatus({
+ providers: [
+ { providerId: "umans", limit: 4, inFlight: 2, queued: 1, paused: false },
+ { providerId: "", inFlight: 1 },
+ { limit: 2 },
+ { providerId: 9, inFlight: 0 },
+ { providerId: "x", limit: -1, inFlight: "bad", queued: null, paused: "yes" },
+ ],
+ });
+ expect(providers).toEqual([
+ {
+ providerId: "umans",
+ limit: 4,
+ inFlight: 2,
+ queued: 1,
+ paused: false,
+ cooldownMs: 350,
+ autoReduced: false,
+ },
+ {
+ providerId: "x",
+ limit: 1,
+ inFlight: 0,
+ queued: 0,
+ paused: false,
+ cooldownMs: 350,
+ autoReduced: false,
+ },
+ ]);
+ });
+
+ it("omits pausedUntil when it is not a finite number", () => {
+ const providers = normalizeConcurrencyStatus({
+ providers: [
+ { providerId: "a", limit: 1, inFlight: 0, queued: 0, paused: true, pausedUntil: "x" },
+ { providerId: "b", limit: 1, inFlight: 0, queued: 0, paused: true, pausedUntil: null },
+ ],
+ });
+ for (const p of providers) expect("pausedUntil" in p).toBe(false);
+ });
+
+ it("coerces cooldownMs (default 350) + carries auto-reduce fields only when true", () => {
+ const [reduced, healthy] = normalizeConcurrencyStatus({
+ providers: [
+ {
+ providerId: "umans",
+ limit: 3,
+ inFlight: 1,
+ queued: 0,
+ paused: false,
+ cooldownMs: 500,
+ autoReduced: true,
+ autoReducedFrom: 4,
+ notice: "auto-reduced to 3 after a 429.",
+ },
+ { providerId: "openai", limit: 4, inFlight: 0, queued: 0, paused: false },
+ ],
+ });
+ expect(reduced?.cooldownMs).toBe(500);
+ expect(reduced?.autoReduced).toBe(true);
+ expect(reduced?.autoReducedFrom).toBe(4);
+ expect(reduced?.notice).toBe("auto-reduced to 3 after a 429.");
+ // Healthy entry: cooldownMs defaults to 350 when absent; auto-reduce fields
+ // are NOT present (they are only included when autoReduced===true).
+ expect(healthy?.cooldownMs).toBe(DEFAULT_COOLDOWN_MS);
+ expect(healthy?.autoReduced).toBe(false);
+ expect(healthy && "autoReducedFrom" in healthy).toBe(false);
+ expect(healthy && "notice" in healthy).toBe(false);
+ });
+
+ it("drops autoReducedFrom/notice when autoReduced is false (even if present in JSON)", () => {
+ const [p] = normalizeConcurrencyStatus({
+ providers: [
+ {
+ providerId: "x",
+ limit: 4,
+ inFlight: 0,
+ queued: 0,
+ paused: false,
+ autoReduced: false,
+ autoReducedFrom: 9,
+ notice: "stale",
+ },
+ ],
+ });
+ expect(p?.autoReduced).toBe(false);
+ expect(p && "autoReducedFrom" in p).toBe(false);
+ expect(p && "notice" in p).toBe(false);
+ });
+});
+
+// ── normalizeConcurrencyCooldown ───────────────────────────────────────────────
+
+describe("normalizeConcurrencyCooldown", () => {
+ it("coerces a well-formed body", () => {
+ expect(normalizeConcurrencyCooldown({ providerId: "umans", cooldownMs: 500 })).toEqual({
+ providerId: "umans",
+ cooldownMs: 500,
+ });
+ });
+
+ it("defaults a malformed/absent cooldownMs to 350", () => {
+ expect(normalizeConcurrencyCooldown({ providerId: "x", cooldownMs: -1 })?.cooldownMs).toBe(
+ DEFAULT_COOLDOWN_MS,
+ );
+ expect(normalizeConcurrencyCooldown({ providerId: "x" })?.cooldownMs).toBe(DEFAULT_COOLDOWN_MS);
+ expect(normalizeConcurrencyCooldown({ providerId: "x", cooldownMs: "fast" })?.cooldownMs).toBe(
+ DEFAULT_COOLDOWN_MS,
+ );
+ });
+
+ it("returns null for a missing/malformed providerId", () => {
+ expect(normalizeConcurrencyCooldown({ cooldownMs: 350 })).toBeNull();
+ expect(normalizeConcurrencyCooldown({ providerId: "", cooldownMs: 350 })).toBeNull();
+ expect(normalizeConcurrencyCooldown(null)).toBeNull();
+ expect(normalizeConcurrencyCooldown({})).toBeNull();
+ });
+});
diff --git a/src/features/concurrency/logic/view-model.ts b/src/features/concurrency/logic/view-model.ts
new file mode 100644
index 0000000..8a37198
--- /dev/null
+++ b/src/features/concurrency/logic/view-model.ts
@@ -0,0 +1,487 @@
+import type {
+ ConcurrencyCooldownResponse,
+ ConcurrencyStatusEntry,
+} from "@dispatch/transport-contract";
+import type { ConcurrencyLimitEntry } from "./types";
+
+/**
+ * Pure view-models for the concurrency feature — zero DOM, zero effects, zero
+ * Svelte. Maps backend `ConcurrencyLimitEntry` / `ConcurrencyStatusEntry` to
+ * display shapes (badges, "2/4" in-flight labels, pause countdowns, cooldown
+ * labels, auto-reduce banners, summaries), holds the limit/cooldown-input
+ * parsing, and the network-seam normalizers the composition root coerces the
+ * untyped JSON with.
+ */
+
+export type Badge = "success" | "warning" | "error" | "neutral";
+
+/** A configured limit row shaped for display. */
+export interface ConcurrencyLimitView {
+ readonly providerId: string;
+ readonly limit: number;
+}
+
+/**
+ * A live status row shaped for display. Carries the raw counts plus pre-computed
+ * labels so the template stays thin.
+ */
+export interface ConcurrencyStatusView {
+ readonly providerId: string;
+ readonly limit: number;
+ readonly inFlight: number;
+ readonly queued: number;
+ readonly paused: boolean;
+ /** "2/4" — in-flight slots held vs the cap. */
+ readonly inFlightLabel: string;
+ /** "1 queued" / "no queue". */
+ readonly queuedLabel: string;
+ /** A pause label when paused, e.g. "paused — resumes in 30s"; null otherwise. */
+ readonly pausedLabel: string | null;
+ readonly badge: Badge;
+ /** True when paused or at capacity (show a spinner). */
+ readonly busy: boolean;
+ /** Per-slot release cooldown in ms (defensive default 350 on garbage). */
+ readonly cooldownMs: number;
+ /** "350ms" / "1.2s" / "0ms (off)" — display label for the cooldown. */
+ readonly cooldownLabel: string;
+ /** Whether the limit was auto-reduced by a 429 (one-way; user restores manually). */
+ readonly autoReduced: boolean;
+ /** The original limit before auto-reduction; null when not auto-reduced. */
+ readonly autoReducedFrom: number | null;
+}
+
+/**
+ * A view-model for the auto-reduce banner — derived from a status entry whose
+ * `autoReduced` is `true`. `message` is the backend's `notice` when present, else
+ * a synthesized fallback. `viewAutoReduce` returns this (or null) so the banner
+ * section renders without reaching into the raw entry.
+ */
+export interface AutoReduceNotice {
+ readonly providerId: string;
+ readonly message: string;
+ /** The original limit before reduction — the value "Restore to N" PUTs. */
+ readonly fromLimit: number;
+ /** The current (reduced) limit. */
+ readonly currentLimit: number;
+}
+
+// ── Limit input parsing ───────────────────────────────────────────────────────
+
+/**
+ * Parse a raw limit input into a positive integer, or `null` when it is not a
+ * valid positive integer. Accepts "4" → 4; rejects "0", "-1", "4.5", "", "abc".
+ * Drives the Add/Save button's disabled state so an invalid value never reaches
+ * the backend (the backend is still the authority — it 400s a non-positive body).
+ */
+export function parseLimitInput(value: string): number | null {
+ const trimmed = value.trim();
+ if (trimmed === "" || !/^[0-9]+$/.test(trimmed)) return null;
+ const n = Number.parseInt(trimmed, 10);
+ return Number.isFinite(n) && n >= 1 ? n : null;
+}
+
+/**
+ * Coerce an untrusted limit value into a positive integer (default 1). Used when
+ * normalizing backend responses so a malformed `limit` can never be 0/negative.
+ */
+export function normalizeLimit(value: unknown): number {
+ const n = typeof value === "number" && Number.isFinite(value) ? value : 1;
+ const int = Math.floor(n);
+ return int >= 1 ? int : 1;
+}
+
+// ── Cooldown input parsing ────────────────────────────────────────────────────
+//
+// The per-slot release cooldown (ms) is a NON-NEGATIVE integer (0 = no cooldown,
+// instant re-admission) — unlike the limit, 0 is a VALID value. The default is
+// 350ms (the backend's server default when a limit is set but no explicit
+// cooldown was configured). It is configurable + persisted per provider via
+// `PUT /concurrency/cooldown/:providerId`.
+
+/** The server's default cooldown (ms) — used when none is explicitly set. */
+export const DEFAULT_COOLDOWN_MS = 350;
+
+/**
+ * Parse a raw cooldown input into a non-negative integer, or `null` when it is
+ * not valid. Accepts "0" → 0, "350" → 350; rejects "-1", "4.5", "", "abc".
+ * Drives the cooldown Save button's disabled state so an invalid value never
+ * reaches the backend (the backend 400s a non-negative-integer body).
+ */
+export function parseCooldownInput(value: string): number | null {
+ const trimmed = value.trim();
+ if (trimmed === "" || !/^[0-9]+$/.test(trimmed)) return null;
+ const n = Number.parseInt(trimmed, 10);
+ return Number.isFinite(n) && n >= 0 ? n : null;
+}
+
+/**
+ * Coerce an untrusted cooldown value into a non-negative integer (default
+ * {@link DEFAULT_COOLDOWN_MS}). Used when normalizing backend responses so a
+ * malformed `cooldownMs` can never be negative/non-finite.
+ */
+export function normalizeCooldown(value: unknown): number {
+ const n = typeof value === "number" && Number.isFinite(value) ? value : DEFAULT_COOLDOWN_MS;
+ const int = Math.floor(n);
+ return int >= 0 ? int : DEFAULT_COOLDOWN_MS;
+}
+
+/**
+ * Format a cooldown (ms) as a short display label:
+ * 0 → "0ms (off)" · <1000 → "350ms" · ≥1000 → "1.2s" (trailing ".0" trimmed).
+ */
+export function cooldownLabel(ms: number): string {
+ if (ms <= 0) return "0ms (off)";
+ if (ms < 1000) return `${ms}ms`;
+ const secs = ms / 1000;
+ const fixed = secs.toFixed(1);
+ return `${fixed.endsWith(".0") ? fixed.slice(0, -2) : fixed}s`;
+}
+
+// ── Provider options (the Add-form dropdown) ───────────────────────────────────
+//
+// A concurrency `providerId` is the credential name that prefixes a model name
+// (`<provider>/<model>` — the same key the model picker groups by). The dropdown
+// is the UNION of providers discoverable from the available models AND providers
+// already carrying a configured limit (so a limit set out-of-band but whose
+// model list is empty still appears), in first-seen order. Models are the
+// authority; a provider with models but no limit is still selectable (Add sets it).
+
+/** The provider id prefix of a `<provider>/<model>` name (the part before the first `/`, or the whole string). */
+export function providerFromModel(full: string): string {
+ const i = full.indexOf("/");
+ return i === -1 ? full : full.slice(0, i);
+}
+
+/** Distinct provider ids to offer in the Add dropdown, first-seen order. */
+export function providerOptions(
+ models: readonly string[],
+ limits: readonly ConcurrencyLimitEntry[],
+): string[] {
+ const seen = new Set<string>();
+ const out: string[] = [];
+ const add = (p: string): void => {
+ if (p !== "" && !seen.has(p)) {
+ seen.add(p);
+ out.push(p);
+ }
+ };
+ for (const m of models) add(providerFromModel(m));
+ for (const l of limits) add(l.providerId);
+ return out;
+}
+
+// ── Status → display view ──────────────────────────────────────────────────────
+
+const NO_LIMITS = "No limits configured";
+
+/**
+ * Format a remaining-ms delta as a short pause countdown: "30s", "1m 05s",
+ * "resuming" (≤ 0). Pure via the injected `remainingMs`. The component recomputes
+ * this on each status poll (every ~2s) — a 1s ticking timer is optional.
+ */
+export function formatPauseDuration(remainingMs: number): string {
+ if (remainingMs <= 0) return "resuming";
+ const totalSec = Math.floor(remainingMs / 1000);
+ const hours = Math.floor(totalSec / 3600);
+ const mins = Math.floor((totalSec % 3600) / 60);
+ const secs = totalSec % 60;
+ if (hours > 0) return `${hours}h ${String(mins).padStart(2, "0")}m`;
+ if (mins > 0) return `${mins}m ${String(secs).padStart(2, "0")}s`;
+ return `${secs}s`;
+}
+
+/**
+ * The pause label for a status entry, or `null` when not paused. When paused with
+ * a future `pausedUntil`, shows "paused — resumes in 30s"; when paused without a
+ * usable timestamp, shows "paused". Pure via the injectable `now`.
+ */
+export function pauseLabel(
+ paused: boolean,
+ pausedUntil: number | null | undefined,
+ now: number = Date.now(),
+): string | null {
+ if (!paused) return null;
+ if (typeof pausedUntil === "number" && Number.isFinite(pausedUntil)) {
+ const remaining = pausedUntil - now;
+ if (remaining > 0) return `paused — resumes in ${formatPauseDuration(remaining)}`;
+ }
+ // Paused without a usable future timestamp (missing, non-finite, or already
+ // expired): the next status poll will clear `paused`. Show "paused" meanwhile.
+ return "paused";
+}
+
+/**
+ * Build a display view for a status entry. `now` is injectable for tests
+ * (defaults to `Date.now()`); the composition-root component passes nothing in
+ * production (it recomputes on each poll).
+ *
+ * `autoReduced` does NOT flip `busy` (a reduced limit still admits agents; it is
+ * a degraded-but-active state surfaced via the banner, not a spinner) — it only
+ * nudges the badge to `warning` so the row signals attention.
+ */
+export function viewConcurrencyStatus(
+ entry: ConcurrencyStatusEntry,
+ now: number = Date.now(),
+): ConcurrencyStatusView {
+ const limit = normalizeLimit(entry.limit);
+ const inFlight = clampCount(entry.inFlight);
+ const queued = clampCount(entry.queued);
+ const paused = entry.paused === true;
+ const autoReduced = entry.autoReduced === true;
+ const atCapacity = inFlight >= limit;
+ let badge: Badge;
+ if (paused) badge = "warning";
+ else if (autoReduced) badge = "warning";
+ else if (atCapacity && queued > 0) badge = "warning";
+ else if (inFlight > 0) badge = "success";
+ else badge = "neutral";
+ const cooldownMs = normalizeCooldown(entry.cooldownMs);
+ const autoReducedFrom =
+ autoReduced &&
+ typeof entry.autoReducedFrom === "number" &&
+ Number.isFinite(entry.autoReducedFrom)
+ ? normalizeLimit(entry.autoReducedFrom)
+ : null;
+ return {
+ providerId: entry.providerId,
+ limit,
+ inFlight,
+ queued,
+ paused,
+ inFlightLabel: `${inFlight}/${limit}`,
+ queuedLabel: queued === 0 ? "no queue" : `${queued} queued`,
+ pausedLabel: pauseLabel(paused, entry.pausedUntil, now),
+ badge,
+ busy: paused || (atCapacity && queued > 0),
+ cooldownMs,
+ cooldownLabel: cooldownLabel(cooldownMs),
+ autoReduced,
+ autoReducedFrom,
+ };
+}
+
+/**
+ * A short status word for a status view, for the row's status badge:
+ * "Paused" · "At capacity" (in-flight at the cap with a queue) · "Active"
+ * (in-flight > 0) · "Idle". Mirrors the badge-text branching so the template
+ * holds no branching logic.
+ */
+export function statusLabel(view: ConcurrencyStatusView): string {
+ if (view.paused) return "Paused";
+ if (view.inFlight >= view.limit && view.queued > 0) return "At capacity";
+ if (view.inFlight > 0) return "Active";
+ return "Idle";
+}
+
+/**
+ * The auto-reduce banner view for a status entry, or `null` when it is not
+ * auto-reduced. `message` prefers the backend's `notice` (verbatim, when present
+ * + non-empty); otherwise a synthesized fallback is built from
+ * `autoReducedFrom` → `limit`. `fromLimit` is the value "Restore to N" PUTs back.
+ */
+export function viewAutoReduce(entry: ConcurrencyStatusEntry): AutoReduceNotice | null {
+ if (entry.autoReduced !== true) return null;
+ const currentLimit = normalizeLimit(entry.limit);
+ const fromLimit =
+ typeof entry.autoReducedFrom === "number" && Number.isFinite(entry.autoReducedFrom)
+ ? normalizeLimit(entry.autoReducedFrom)
+ : currentLimit + 1;
+ const notice =
+ typeof entry.notice === "string" && entry.notice.length > 0
+ ? entry.notice
+ : `Concurrency limit auto-reduced to ${currentLimit} after a 429 — restore manually when ready.`;
+ return {
+ providerId: entry.providerId,
+ message: notice,
+ fromLimit,
+ currentLimit,
+ };
+}
+
+/**
+ * All auto-reduce banners across a status list (one per auto-reduced provider),
+ * in input order. Empty when none are auto-reduced.
+ */
+export function autoReduceNotices(
+ entries: readonly ConcurrencyStatusEntry[],
+): readonly AutoReduceNotice[] {
+ const out: AutoReduceNotice[] = [];
+ for (const e of entries) {
+ const n = viewAutoReduce(e);
+ if (n !== null) out.push(n);
+ }
+ return out;
+}
+
+export function viewConcurrencyStatuses(
+ entries: readonly ConcurrencyStatusEntry[],
+ now: number = Date.now(),
+): readonly ConcurrencyStatusView[] {
+ return entries.map((e) => viewConcurrencyStatus(e, now));
+}
+
+/** A display view for a configured limit entry. */
+export function viewConcurrencyLimit(entry: ConcurrencyLimitEntry): ConcurrencyLimitView {
+ return { providerId: entry.providerId, limit: normalizeLimit(entry.limit) };
+}
+
+export function viewConcurrencyLimits(
+ entries: readonly ConcurrencyLimitEntry[],
+): readonly ConcurrencyLimitView[] {
+ return entries.map(viewConcurrencyLimit);
+}
+
+// ── Summaries ──────────────────────────────────────────────────────────────────
+
+/** A one-line summary of the configured limits list, e.g. "2 limits configured". */
+export function summarizeLimits(limits: readonly ConcurrencyLimitEntry[]): string {
+ if (limits.length === 0) return NO_LIMITS;
+ return `${limits.length} limit${limits.length === 1 ? "" : "s"} configured`;
+}
+
+/**
+ * A one-line summary of the live status, e.g.
+ * "2 providers · 6/10 in flight · 1 queued · 1 paused · 1 auto-reduced". Only the
+ * queued / paused / auto-reduced fragments appear when non-zero.
+ */
+export function summarizeStatus(
+ providers: readonly ConcurrencyStatusEntry[],
+ now: number = Date.now(),
+): string {
+ if (providers.length === 0) return NO_LIMITS;
+ let inFlight = 0;
+ let limitTotal = 0;
+ let queued = 0;
+ let paused = 0;
+ let autoReduced = 0;
+ for (const p of providers) {
+ const limit = normalizeLimit(p.limit);
+ inFlight += clampCount(p.inFlight);
+ limitTotal += limit;
+ queued += clampCount(p.queued);
+ if (p.paused === true) paused += 1;
+ if (p.autoReduced === true) autoReduced += 1;
+ }
+ const parts: string[] = [];
+ parts.push(
+ `${providers.length} provider${providers.length === 1 ? "" : "s"}`,
+ `${inFlight}/${limitTotal} in flight`,
+ );
+ if (queued > 0) parts.push(`${queued} queued`);
+ if (paused > 0) parts.push(`${paused} paused`);
+ if (autoReduced > 0) parts.push(`${autoReduced} auto-reduced`);
+ // Touch `now` so the summary recomputes alongside the per-row pause countdown.
+ void now;
+ return parts.join(" · ");
+}
+
+// ── Network-seam normalization (pure; called by the composition root) ───────────
+//
+// The concurrency responses are untyped JSON at runtime. The store coerces each
+// defensively HERE (pure + tested) — a malformed/partial backend value (e.g. the
+// extension returning `{}`) can never crash the renderer. Mirrors the
+// `normalizeHeartbeatConfig` / inline `Array.isArray(data.servers)` guards.
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+ return value !== null && typeof value === "object";
+}
+
+function asString(value: unknown): string | null {
+ return typeof value === "string" && value.length > 0 ? value : null;
+}
+
+/** Coerce a non-negative count field to a non-negative integer (0 on garbage). */
+function clampCount(value: unknown): number {
+ const n = typeof value === "number" && Number.isFinite(value) ? value : 0;
+ const int = Math.floor(n);
+ return int >= 0 ? int : 0;
+}
+
+/** Coerce an untrusted `GET /concurrency/limits` body into a typed limit list. */
+export function normalizeConcurrencyLimits(data: unknown): readonly ConcurrencyLimitEntry[] {
+ if (!isRecord(data) || !Array.isArray(data.limits)) return [];
+ const limits = data.limits as readonly unknown[];
+ return limits
+ .filter((r): r is Record<string, unknown> => isRecord(r))
+ .map((r) => ({
+ providerId: asString(r.providerId) ?? "",
+ limit: normalizeLimit(r.limit),
+ }))
+ .filter((r) => r.providerId !== "");
+}
+
+/** Coerce an untrusted `GET`/`PUT /concurrency/limits/:id` body into a limit, or null. */
+export function normalizeConcurrencyLimit(data: unknown): ConcurrencyLimitEntry | null {
+ if (!isRecord(data)) return null;
+ const providerId = asString(data.providerId);
+ if (providerId === null) return null;
+ return { providerId, limit: normalizeLimit(data.limit) };
+}
+
+/**
+ * Coerce an untrusted `GET /concurrency/status` body into a typed status list.
+ * `pausedUntil` is included only when it is a finite number (it is absent when
+ * not paused). `cooldownMs` (default 350) + `autoReduced` are always coerced;
+ * `autoReducedFrom` + `notice` are included only when `autoReduced` is true (and
+ * well-formed), mirroring the backend's "present only when auto-reduced" contract.
+ */
+export function normalizeConcurrencyStatus(data: unknown): readonly ConcurrencyStatusEntry[] {
+ if (!isRecord(data) || !Array.isArray(data.providers)) return [];
+ const providers = data.providers as readonly unknown[];
+ return providers
+ .filter((r): r is Record<string, unknown> => isRecord(r))
+ .map((r): ConcurrencyStatusEntry => {
+ const providerId = asString(r.providerId) ?? "";
+ const limit = normalizeLimit(r.limit);
+ const inFlight = clampCount(r.inFlight);
+ const queued = clampCount(r.queued);
+ const paused = r.paused === true;
+ const cooldownMs = normalizeCooldown(r.cooldownMs);
+ const autoReduced = r.autoReduced === true;
+ // Build immutably (the contract fields are readonly): start with the always-
+ // present fields, then layer the optional `pausedUntil` (finite number only)
+ // + the auto-reduce-only `autoReducedFrom`/`notice` (present only when true).
+ let entry: ConcurrencyStatusEntry = {
+ providerId,
+ limit,
+ inFlight,
+ queued,
+ paused,
+ cooldownMs,
+ autoReduced,
+ };
+ if (typeof r.pausedUntil === "number" && Number.isFinite(r.pausedUntil)) {
+ entry = { ...entry, pausedUntil: r.pausedUntil };
+ }
+ if (autoReduced) {
+ // Accumulate the auto-reduce-only optionals into a plain record (the
+ // contract fields are readonly, so we can't mutate a typed partial —
+ // collect then spread into a fresh entry).
+ const patch: { autoReducedFrom?: number; notice?: string } = {};
+ if (typeof r.autoReducedFrom === "number" && Number.isFinite(r.autoReducedFrom)) {
+ patch.autoReducedFrom = normalizeLimit(r.autoReducedFrom);
+ }
+ if (typeof r.notice === "string" && r.notice.length > 0) {
+ patch.notice = r.notice;
+ }
+ if (patch.autoReducedFrom !== undefined || patch.notice !== undefined) {
+ entry = { ...entry, ...patch };
+ }
+ }
+ return entry;
+ })
+ .filter((r) => r.providerId !== "");
+}
+
+/**
+ * Coerce an untrusted `GET`/`PUT /concurrency/cooldown/:providerId` body into a
+ * typed cooldown response, or `null` when it is malformed (missing/malformed
+ * `providerId` or `cooldownMs`). The composition root surfaces a 404/400/503 as
+ * `ok: false` separately; this only defends the success body.
+ */
+export function normalizeConcurrencyCooldown(data: unknown): ConcurrencyCooldownResponse | null {
+ if (!isRecord(data)) return null;
+ const providerId = asString(data.providerId);
+ if (providerId === null) return null;
+ return { providerId, cooldownMs: normalizeCooldown(data.cooldownMs) };
+}
diff --git a/src/features/concurrency/ui/AutoReduceBanner.svelte b/src/features/concurrency/ui/AutoReduceBanner.svelte
new file mode 100644
index 0000000..132ebc7
--- /dev/null
+++ b/src/features/concurrency/ui/AutoReduceBanner.svelte
@@ -0,0 +1,81 @@
+<script lang="ts">
+ import type { AutoReduceNotice } from "../logic/view-model";
+ import type { RestoreOutcome } from "../logic/types";
+
+ let {
+ notice,
+ onRestore,
+ onDismiss,
+ }: {
+ /** The auto-reduce banner view (providerId + message + from/current limit). */
+ notice: AutoReduceNotice;
+ /**
+ * "Restore to N" — PUT the limit back to `fromLimit`. Returns the outcome so
+ * a FAILED restore surfaces an inline error here (the banner owns its error
+ * display; the parent only refreshes on success).
+ */
+ onRestore: (providerId: string, limit: number) => Promise<RestoreOutcome>;
+ /** Hide this banner locally (persists hidden while autoReduced stays true). */
+ onDismiss: (providerId: string) => void;
+ } = $props();
+
+ let restoring = $state(false);
+ /** Inline restore error (e.g. "Concurrency service not available"); cleared on retry. */
+ let error = $state<string | null>(null);
+
+ async function handleRestore(): Promise<void> {
+ restoring = true;
+ error = null;
+ // The parent PUTs the limit + refreshes status on success; the banner clears
+ // once the next poll shows autoReduced===false. On failure the outcome is
+ // bubbled back here so the error shows inline next to the button.
+ const result = await onRestore(notice.providerId, notice.fromLimit);
+ restoring = false;
+ if (!result.ok) {
+ error = result.error;
+ }
+ }
+</script>
+
+<div
+ class="alert alert-warning flex flex-col gap-2 py-2 text-xs"
+ role="status"
+ data-testid={`auto-reduce-banner-${notice.providerId}`}
+>
+ <div class="flex items-start gap-2">
+ <span class="shrink-0">⚠</span>
+ <div class="flex-1">
+ <p>{notice.message}</p>
+ <p class="opacity-70">
+ Was {notice.fromLimit}, now {notice.currentLimit}.
+ </p>
+ </div>
+ <div class="flex shrink-0 items-center gap-1">
+ <!-- The "Restore to N" text stays visible while loading (only the spinner is
+ prepended) so the button keeps its accessible name during the PUT — a
+ spinner-only button loses its name for screen-reader users. -->
+ <button
+ type="button"
+ class="btn btn-warning btn-xs gap-1"
+ disabled={restoring}
+ onclick={handleRestore}
+ >
+ {#if restoring}
+ <span class="loading loading-spinner loading-xs"></span>
+ {/if}
+ Restore to {notice.fromLimit}
+ </button>
+ <button
+ type="button"
+ class="btn btn-ghost btn-xs"
+ aria-label={`Dismiss auto-reduce notice for ${notice.providerId}`}
+ onclick={() => onDismiss(notice.providerId)}
+ >
+ ✕
+ </button>
+ </div>
+ </div>
+ {#if error}
+ <p class="font-mono text-error" data-testid={`restore-error-${notice.providerId}`}>{error}</p>
+ {/if}
+</div>
diff --git a/src/features/concurrency/ui/ConcurrencyLimitRow.svelte b/src/features/concurrency/ui/ConcurrencyLimitRow.svelte
new file mode 100644
index 0000000..bf06ac0
--- /dev/null
+++ b/src/features/concurrency/ui/ConcurrencyLimitRow.svelte
@@ -0,0 +1,204 @@
+<script lang="ts">
+ import { untrack } from "svelte";
+ import {
+ DEFAULT_COOLDOWN_MS,
+ parseCooldownInput,
+ parseLimitInput,
+ statusLabel,
+ type Badge,
+ type ConcurrencyLimitView,
+ type ConcurrencyStatusView,
+ } from "../logic/view-model";
+ import type {
+ DeleteConcurrencyLimit,
+ SaveConcurrencyCooldown,
+ SaveConcurrencyLimit,
+ } from "../logic/types";
+
+ let {
+ limit,
+ status,
+ save,
+ saveCooldown,
+ remove,
+ }: {
+ /** The configured limit row (providerId + current limit). */
+ limit: ConcurrencyLimitView;
+ /** The provider's live status view (in-flight/queue/badge), or null when no
+ * status entry exists yet. Drives the status line + seeds the cooldown input. */
+ status: ConcurrencyStatusView | null;
+ save: SaveConcurrencyLimit;
+ saveCooldown: SaveConcurrencyCooldown;
+ remove: DeleteConcurrencyLimit;
+ } = $props();
+
+ // The badge→color map (presentational). Mirrors the old status-card mapping.
+ const badgeClass: Record<Badge, string> = {
+ success: "badge-success",
+ warning: "badge-warning",
+ error: "badge-error",
+ neutral: "badge-ghost",
+ };
+
+ // The cooldown input seed: the live cooldown when a status entry exists, else
+ // the server default (350).
+ const cooldownMs = $derived(status?.cooldownMs ?? DEFAULT_COOLDOWN_MS);
+
+ // Inline-edit state for the limit + cooldown inputs. Each is seeded from its
+ // canonical value, but only while untouched — so a save echo / status-poll
+ // refresh re-syncs without clobbering an in-flight edit. Mirrors the
+ // ChatLimitField seed pattern (avoids reading the prop in the $state init).
+ let limitDraft = $state("");
+ let lastLimitSeed = $state("");
+ let cooldownDraft = $state("");
+ let lastCooldownSeed = $state("");
+ let saving = $state(false);
+ let removing = $state(false);
+ let error = $state<string | null>(null);
+ /** Brief "Saved" confirmation after a successful save; cleared on edit. */
+ let justSaved = $state(false);
+
+ $effect(() => {
+ const incomingLimit = String(limit.limit);
+ const incomingCooldown = String(cooldownMs);
+ untrack(() => {
+ if (limitDraft === lastLimitSeed) limitDraft = incomingLimit;
+ lastLimitSeed = incomingLimit;
+ if (cooldownDraft === lastCooldownSeed) cooldownDraft = incomingCooldown;
+ lastCooldownSeed = incomingCooldown;
+ });
+ });
+
+ const parsedLimit = $derived(parseLimitInput(limitDraft));
+ const parsedCooldown = $derived(parseCooldownInput(cooldownDraft));
+ const dirtyLimit = $derived(parsedLimit !== null && parsedLimit !== limit.limit);
+ const dirtyCooldown = $derived(parsedCooldown !== null && parsedCooldown !== cooldownMs);
+ const dirty = $derived(dirtyLimit || dirtyCooldown);
+
+ // Clear the "Saved" hint + any error as soon as the user edits either field.
+ function onInput(): void {
+ justSaved = false;
+ error = null;
+ }
+
+ // "Set" saves whichever field is dirty: the limit first (PUT
+ // /concurrency/limits/:id), then the cooldown (PUT /concurrency/cooldown/:id).
+ // Stops + surfaces an inline error on the first failure.
+ async function handleSet(): Promise<void> {
+ if (!dirty || saving || removing) return;
+ saving = true;
+ error = null;
+ try {
+ if (dirtyLimit && parsedLimit !== null) {
+ const r = await save(limit.providerId, parsedLimit);
+ if (!r.ok) {
+ error = r.error;
+ return;
+ }
+ // Reflect the echoed limit back immediately (the prop re-asserts it via
+ // the seed effect once the parent reloads).
+ limitDraft = String(r.limit);
+ lastLimitSeed = limitDraft;
+ }
+ if (dirtyCooldown && parsedCooldown !== null) {
+ const r = await saveCooldown(limit.providerId, parsedCooldown);
+ if (!r.ok) {
+ error = r.error;
+ return;
+ }
+ cooldownDraft = String(r.cooldownMs);
+ lastCooldownSeed = cooldownDraft;
+ }
+ justSaved = true;
+ } finally {
+ saving = false;
+ }
+ }
+
+ async function handleRemove(): Promise<void> {
+ removing = true;
+ error = null;
+ const result = await remove(limit.providerId);
+ removing = false;
+ if (!result.ok) {
+ error = result.error;
+ }
+ // On success the parent drops this row (re-loaded limits list).
+ }
+</script>
+
+<div class="flex flex-col gap-1 rounded-box bg-base-200 p-2 text-sm">
+ <!-- Line 1: provider + limit + cooldown + Set + ✕ (all on one line — nowrap so
+ the buttons never wrap; tight gap + narrow inputs keep the provider name
+ visible; the provider shrinks via flex-1 + min-w-0). -->
+ <div class="flex flex-nowrap items-center gap-1">
+ <span class="min-w-0 flex-1 truncate font-medium font-mono" title={limit.providerId}
+ >{limit.providerId}</span
+ >
+ <input
+ type="text"
+ inputmode="numeric"
+ class="input input-bordered input-xs w-12 min-w-0 font-mono"
+ aria-label={`Concurrency limit for ${limit.providerId}`}
+ bind:value={limitDraft}
+ oninput={onInput}
+ disabled={saving || removing}
+ />
+ <input
+ type="text"
+ inputmode="numeric"
+ class="input input-bordered input-xs w-14 min-w-0 font-mono"
+ aria-label={`Release cooldown (ms) for ${limit.providerId}`}
+ bind:value={cooldownDraft}
+ oninput={onInput}
+ disabled={saving || removing}
+ />
+ <span class="shrink-0 text-[10px] opacity-50">ms</span>
+ <button
+ type="button"
+ class="btn btn-primary btn-xs shrink-0"
+ aria-label={`Set concurrency for ${limit.providerId}`}
+ disabled={!dirty || saving || removing}
+ onclick={handleSet}
+ >
+ {#if saving}
+ <span class="loading loading-spinner loading-xs"></span>
+ {:else}
+ Set
+ {/if}
+ </button>
+ <button
+ type="button"
+ class="btn btn-ghost btn-xs shrink-0 text-error"
+ aria-label={`Remove concurrency limit for ${limit.providerId}`}
+ disabled={saving || removing}
+ onclick={handleRemove}
+ >
+ {#if removing}
+ <span class="loading loading-spinner loading-xs"></span>
+ {:else}
+ ✕
+ {/if}
+ </button>
+ </div>
+
+ <!-- Line 2: in-flight count (left) + status badge (right). Hidden until the
+ first status poll for this provider lands. -->
+ {#if status !== null}
+ <div class="flex items-center justify-between gap-2 text-xs opacity-70">
+ <span title="In-flight slots held vs cap">{status.inFlightLabel} in flight</span>
+ <span class="badge badge-sm {badgeClass[status.badge]} gap-1">
+ {#if status.busy}
+ <span class="loading loading-spinner loading-xs"></span>
+ {/if}
+ {statusLabel(status)}
+ </span>
+ </div>
+ {/if}
+
+ {#if error}
+ <span class="font-mono text-xs text-error">{error}</span>
+ {:else if justSaved && !dirty}
+ <span class="text-xs text-success">Saved.</span>
+ {/if}
+</div>
diff --git a/src/features/concurrency/ui/ConcurrencyView.svelte b/src/features/concurrency/ui/ConcurrencyView.svelte
new file mode 100644
index 0000000..aadb8d1
--- /dev/null
+++ b/src/features/concurrency/ui/ConcurrencyView.svelte
@@ -0,0 +1,433 @@
+<script lang="ts">
+ import { untrack } from "svelte";
+ import type { ConcurrencyStatusEntry } from "@dispatch/transport-contract";
+ import {
+ autoReduceNotices,
+ DEFAULT_COOLDOWN_MS,
+ parseCooldownInput,
+ parseLimitInput,
+ providerOptions,
+ summarizeLimits,
+ viewConcurrencyLimits,
+ viewConcurrencyStatus,
+ type ConcurrencyStatusView,
+ } from "../logic/view-model";
+ import type {
+ ConcurrencyLimitEntry,
+ DeleteConcurrencyLimit,
+ LoadConcurrencyLimits,
+ LoadConcurrencyStatus,
+ RestoreOutcome,
+ SaveConcurrencyCooldown,
+ SaveConcurrencyLimit,
+ } from "../logic/types";
+ import AutoReduceBanner from "./AutoReduceBanner.svelte";
+ import ConcurrencyLimitRow from "./ConcurrencyLimitRow.svelte";
+
+ let {
+ models,
+ loadLimits,
+ saveLimit,
+ deleteLimit,
+ loadStatus,
+ saveCooldown,
+ }: {
+ /** Available models (`<provider>/<model>`) — the source of provider ids for the Add dropdown. */
+ models: readonly string[];
+ loadLimits: LoadConcurrencyLimits;
+ saveLimit: SaveConcurrencyLimit;
+ deleteLimit: DeleteConcurrencyLimit;
+ loadStatus: LoadConcurrencyStatus;
+ saveCooldown: SaveConcurrencyCooldown;
+ } = $props();
+
+ // ── Limits (config: list / add / update / remove) ────────────────────────────
+ let limits = $state<readonly ConcurrencyLimitEntry[]>([]);
+ let limitsError = $state<string | null>(null);
+ /** True after the first load settles (gates the empty state). */
+ let hasLoadedLimits = $state(false);
+ /** Re-entrancy guard for background/silent refreshes (no UI — prevents
+ * overlapping fetches). The refresh is near-instant, so a visible loading
+ * indicator would flicker every poll/reload; it stays INVISIBLE (mirrors the
+ * heartbeat runs list). */
+ let limitsInFlight = false;
+
+ // Add-row state. The provider id is chosen from a dropdown of known providers
+ // (derived from the available models + any already-configured limit providers).
+ // The row is revealed by the "Add" button; "Set" saves it, ✕ cancels.
+ let addOpen = $state(false);
+ let newProviderId = $state("");
+ let newLimitInput = $state("");
+ let newCooldownInput = $state("");
+ let adding = $state(false);
+ let addError = $state<string | null>(null);
+
+ const providerOpts = $derived(providerOptions(models, limits));
+ const limitViews = $derived(viewConcurrencyLimits(limits));
+ const limitsSummary = $derived(summarizeLimits(limits));
+ const parsedNewLimit = $derived(parseLimitInput(newLimitInput));
+ const parsedNewCooldown = $derived(parseCooldownInput(newCooldownInput));
+ /** Only send a cooldown PUT when the user moved it off the server default. */
+ const newCooldownChanged = $derived(
+ parsedNewCooldown !== null && parsedNewCooldown !== DEFAULT_COOLDOWN_MS,
+ );
+ const canSet = $derived(
+ newProviderId !== "" &&
+ parsedNewLimit !== null &&
+ parsedNewCooldown !== null &&
+ !limits.some((l) => l.providerId === newProviderId) &&
+ !adding,
+ );
+
+ // Keep the dropdown selection valid: default to the first option, and if the
+ // selected provider is removed from the options (e.g. its limit was deleted and
+ // it has no models), fall back to the first remaining option. Runs untracked so
+ // it doesn't loop on its own assignment.
+ $effect(() => {
+ const opts = providerOpts;
+ untrack(() => {
+ if (opts.length === 0) {
+ if (newProviderId !== "") newProviderId = "";
+ return;
+ }
+ if (!opts.includes(newProviderId)) newProviderId = opts[0] ?? "";
+ });
+ });
+
+ async function refreshLimits(): Promise<void> {
+ if (limitsInFlight) return;
+ limitsInFlight = true;
+ const result = await loadLimits();
+ limitsInFlight = false;
+ hasLoadedLimits = true;
+ if (result.ok) {
+ limits = result.limits;
+ // Clear the error only on success so it stays visible (stable, no flicker)
+ // during an in-flight retry rather than vanishing mid-refresh.
+ limitsError = null;
+ } else {
+ limitsError = result.error;
+ }
+ }
+
+ function startAdd(): void {
+ addOpen = true;
+ addError = null;
+ newLimitInput = "";
+ newCooldownInput = String(DEFAULT_COOLDOWN_MS);
+ // newProviderId is kept valid (defaults to the first option) by the effect above.
+ }
+
+ function cancelAdd(): void {
+ addOpen = false;
+ addError = null;
+ newLimitInput = "";
+ newCooldownInput = "";
+ }
+
+ // "Set" on the add row: save the limit, then the cooldown (only when the user
+ // moved it off the server default of 350ms — the backend defaults to 350 when a
+ // limit is set, so an unchanged value needs no extra PUT). On full success the
+ // add row closes + the limits/status reload (the new limit appears as a row).
+ async function handleAdd(): Promise<void> {
+ if (parsedNewLimit === null || parsedNewCooldown === null || newProviderId === "") return;
+ adding = true;
+ addError = null;
+ const limitResult = await saveLimit(newProviderId, parsedNewLimit);
+ if (!limitResult.ok) {
+ adding = false;
+ addError = limitResult.error;
+ return;
+ }
+ if (newCooldownChanged) {
+ const cooldownResult = await saveCooldown(newProviderId, parsedNewCooldown);
+ adding = false;
+ if (!cooldownResult.ok) {
+ // The limit was saved (→ a row will appear after reload); the cooldown PUT
+ // failed. Surface the error but keep the add row open so it's visible. The
+ // user can edit the cooldown on the now-saved row.
+ addError = cooldownResult.error;
+ void refreshLimits();
+ void refreshStatus();
+ return;
+ }
+ } else {
+ adding = false;
+ }
+ addOpen = false;
+ newLimitInput = "";
+ newCooldownInput = "";
+ void refreshLimits();
+ void refreshStatus();
+ }
+
+ // Wrap the ports so a row's save/remove reloads the authoritative list + status
+ // on success (the row still gets the result to drive its own UI).
+ async function rowSave(providerId: string, limit: number) {
+ const result = await saveLimit(providerId, limit);
+ if (result.ok) {
+ void refreshLimits();
+ void refreshStatus();
+ }
+ return result;
+ }
+
+ async function rowRemove(providerId: string) {
+ const result = await deleteLimit(providerId);
+ if (result.ok) {
+ void refreshLimits();
+ void refreshStatus();
+ }
+ return result;
+ }
+
+ // Wrap the cooldown save so a successful PUT refreshes the live status (which
+ // re-carries the new `cooldownMs`). The row still gets the result to drive its
+ // own UI.
+ async function cooldownSave(providerId: string, cooldownMs: number) {
+ const result = await saveCooldown(providerId, cooldownMs);
+ if (result.ok) {
+ void refreshStatus();
+ }
+ return result;
+ }
+
+ // ── Live status (polls while mounted — seeds cooldown inputs + drives the
+ // auto-reduce banners; the poll is silent, no status cards) ────────────────
+ let statusEntries = $state<readonly ConcurrencyStatusEntry[]>([]);
+ let statusError = $state<string | null>(null);
+ /** True after the first load settles (gates the empty state). */
+ let hasLoadedStatus = $state(false);
+ /** Re-entrancy guard for the 2s background poll (no UI — a visible loading
+ * indicator flickered every poll because the refresh is near-instant; it stays
+ * INVISIBLE, mirroring the heartbeat runs list). */
+ let statusInFlight = false;
+
+ // Per-provider status view (from the live status poll) so each saved limit row
+ // renders its in-flight count + status badge + seeds its cooldown input. Null
+ // when a provider has no status entry yet (the row falls back to Idle + the
+ // server-default cooldown of 350).
+ const statusByProvider = $derived.by(() => {
+ const map = new Map<string, ConcurrencyStatusView>();
+ for (const e of statusEntries) map.set(e.providerId, viewConcurrencyStatus(e));
+ return map;
+ });
+
+ // ── Auto-reduce banners (persist while autoReduced===true; dismissible) ───────
+ //
+ // When a provider's limit is auto-reduced by a 429, `GET /concurrency/status`
+ // carries `autoReduced: true` (+ `autoReducedFrom` + `notice`). We render a
+ // banner per such provider. The banner is DISMISSIBLE: a dismissed provider
+ // stays hidden while it remains auto-reduced (persist-while-true), and is
+ // UN-dismissed the moment a poll shows it no longer auto-reduced — so a future
+ // auto-reduce re-shows the banner. Restoring the limit (PUT) clears
+ // `autoReduced` server-side → the next poll drops the banner automatically.
+ //
+ // The dismissed set is intentionally COMPONENT-LOCAL (NOT persisted to
+ // localStorage / a module-global): it resets on remount (sidebar view switch /
+ // reload). This is correct — `autoReduced` is a REAL persisted degraded state,
+ // so re-showing the banner on a fresh mount reminds the user. Persisting a
+ // dismissal across reloads would risk HIDING an ongoing degradation (a
+ // footgun), and AGENTS.md forbids module-global ambient state. Mirrors the
+ // component-local `limitsError`/`statusError` pattern.
+ let dismissedAutoReduce = $state<ReadonlySet<string>>(new Set());
+
+ const allNotices = $derived(autoReduceNotices(statusEntries));
+ const visibleNotices = $derived(
+ allNotices.filter((n) => !dismissedAutoReduce.has(n.providerId)),
+ );
+
+ // Reconcile the dismissed set against the live auto-reduced providers: keep a
+ // dismissed entry ONLY while its provider is still auto-reduced. A provider
+ // that has been restored (no longer in `allNotices`) is dropped from the
+ // dismissed set so a future auto-reduce re-shows its banner.
+ $effect(() => {
+ const autoReducedIds = new Set(allNotices.map((n) => n.providerId));
+ untrack(() => {
+ let changed = false;
+ const next = new Set<string>();
+ for (const id of dismissedAutoReduce) {
+ if (autoReducedIds.has(id)) next.add(id);
+ else changed = true;
+ }
+ if (changed) dismissedAutoReduce = next;
+ });
+ });
+
+ function dismissAutoReduce(providerId: string): void {
+ if (dismissedAutoReduce.has(providerId)) return;
+ dismissedAutoReduce = new Set([...dismissedAutoReduce, providerId]);
+ }
+
+ // "Restore to N" — PUT the limit back to `autoReducedFrom` via the limits
+ // endpoint (a manual PUT clears `autoReduced` server-side). Refreshes limits +
+ // status on success; the next status poll shows `autoReduced===false` and the
+ // banner drops (the dismissed-set effect above un-dismisses it too). The banner
+ // component owns its own restoring-spinner + inline error; on FAILURE the
+ // outcome is bubbled back so the banner shows the error inline (instead of
+ // silently re-enabling the button / surfacing it only in the limits section).
+ async function restoreLimit(providerId: string, limit: number): Promise<RestoreOutcome> {
+ const result = await saveLimit(providerId, limit);
+ if (result.ok) {
+ void refreshLimits();
+ void refreshStatus();
+ return { ok: true };
+ }
+ return { ok: false, error: result.error };
+ }
+
+ async function refreshStatus(): Promise<void> {
+ if (statusInFlight) return;
+ statusInFlight = true;
+ const result = await loadStatus();
+ statusInFlight = false;
+ hasLoadedStatus = true;
+ if (result.ok) {
+ statusEntries = result.providers;
+ // Clear the error only on success so it stays visible (stable, no flicker)
+ // during an in-flight retry rather than vanishing mid-poll.
+ statusError = null;
+ } else {
+ statusError = result.error;
+ }
+ }
+
+ const STATUS_POLL_MS = 2000;
+
+ // Load limits + status on mount, and poll the live status while the view is
+ // alive (so a saved limit's cooldown input re-seeds + auto-reduce banners stay
+ // fresh without a manual refresh). Runs once — no reactive deps read inside.
+ $effect(() => {
+ untrack(() => {
+ void refreshLimits();
+ void refreshStatus();
+ });
+ const h = setInterval(() => {
+ void refreshStatus();
+ }, STATUS_POLL_MS);
+ return () => clearInterval(h);
+ });
+</script>
+
+<div class="flex flex-col gap-4">
+ <!-- Auto-reduce banners (appear when a provider's limit was auto-reduced by a 429) -->
+ {#if visibleNotices.length > 0}
+ <section class="flex flex-col gap-2" aria-label="Concurrency auto-reduce notices">
+ {#each visibleNotices as notice (notice.providerId)}
+ <AutoReduceBanner {notice} onRestore={restoreLimit} onDismiss={dismissAutoReduce} />
+ {/each}
+ </section>
+ {/if}
+
+ <!-- Limits (config) — a single list of editable rows. -->
+ <section class="flex flex-col gap-2">
+ <div class="flex items-center justify-between gap-2">
+ <h3 class="text-xs font-semibold uppercase opacity-60">Concurrency limits</h3>
+ <button
+ type="button"
+ class="btn btn-ghost btn-xs"
+ onclick={() => {
+ void refreshLimits();
+ void refreshStatus();
+ }}
+ aria-label="Refresh concurrency limits"
+ >
+ Refresh
+ </button>
+ </div>
+
+ <span class="text-xs opacity-70">{limitsSummary}</span>
+
+ {#if limitsError}
+ <p class="text-xs text-error">{limitsError}</p>
+ {:else if hasLoadedLimits && limitViews.length === 0 && !addOpen}
+ <p class="text-xs opacity-60">No limits configured — providers run unlimited.</p>
+ {/if}
+
+ <ul class="flex flex-col gap-2">
+ {#each limitViews as limit (limit.providerId)}
+ <li>
+ <ConcurrencyLimitRow
+ {limit}
+ status={statusByProvider.get(limit.providerId) ?? null}
+ save={rowSave}
+ saveCooldown={cooldownSave}
+ remove={rowRemove}
+ />
+ </li>
+ {/each}
+ </ul>
+
+ <!-- Add row: an "Add" button reveals a new item (dropdown + limit + cooldown
+ + Set + ✕). Set saves the limit (+ cooldown when moved off the default);
+ ✕ cancels the draft. -->
+ {#if addOpen}
+ <div class="flex flex-col gap-1 rounded-box bg-base-200 p-2 text-sm">
+ <!-- All on one line — nowrap so the buttons never wrap (tight gap + narrow
+ inputs keep the provider dropdown visible; it shrinks via flex-1 + min-w-0). -->
+ <div class="flex flex-nowrap items-center gap-1">
+ <select
+ class="select select-bordered select-xs min-w-0 flex-1 font-mono"
+ aria-label="Provider"
+ bind:value={newProviderId}
+ disabled={adding || providerOpts.length === 0}
+ >
+ {#if providerOpts.length === 0}
+ <option value="" disabled>No providers available</option>
+ {:else}
+ {#each providerOpts as provider (provider)}
+ <option value={provider}>{provider}</option>
+ {/each}
+ {/if}
+ </select>
+ <input
+ type="text"
+ inputmode="numeric"
+ class="input input-bordered input-xs w-12 min-w-0 font-mono"
+ placeholder="4"
+ aria-label="New concurrency limit"
+ bind:value={newLimitInput}
+ disabled={adding}
+ />
+ <input
+ type="text"
+ inputmode="numeric"
+ class="input input-bordered input-xs w-14 min-w-0 font-mono"
+ aria-label="New release cooldown (ms)"
+ bind:value={newCooldownInput}
+ disabled={adding}
+ />
+ <span class="shrink-0 text-[10px] opacity-50">ms</span>
+ <button
+ type="button"
+ class="btn btn-primary btn-xs shrink-0"
+ disabled={!canSet}
+ onclick={handleAdd}
+ >
+ {#if adding}
+ <span class="loading loading-spinner loading-xs"></span>
+ {:else}
+ Set
+ {/if}
+ </button>
+ <button
+ type="button"
+ class="btn btn-ghost btn-xs shrink-0 text-error"
+ aria-label="Cancel add"
+ disabled={adding}
+ onclick={cancelAdd}
+ >
+ ✕
+ </button>
+ </div>
+ {#if addError}
+ <p class="font-mono text-xs text-error">{addError}</p>
+ {/if}
+ </div>
+ {:else}
+ <button type="button" class="btn btn-ghost btn-xs w-fit" onclick={startAdd}>
+ + Add
+ </button>
+ {/if}
+ </section>
+</div>
diff --git a/src/features/concurrency/ui/ConcurrencyView.test.ts b/src/features/concurrency/ui/ConcurrencyView.test.ts
new file mode 100644
index 0000000..a8163c2
--- /dev/null
+++ b/src/features/concurrency/ui/ConcurrencyView.test.ts
@@ -0,0 +1,559 @@
+import type { ConcurrencyStatusEntry } from "@dispatch/transport-contract";
+import { render, screen } from "@testing-library/svelte";
+import userEvent from "@testing-library/user-event";
+import { describe, expect, it } from "vitest";
+import type {
+ ConcurrencyCooldownResult,
+ ConcurrencyDeleteResult,
+ ConcurrencyLimitResult,
+ ConcurrencyLimitsResult,
+ ConcurrencyStatusResult,
+} from "../logic/types";
+import ConcurrencyView from "./ConcurrencyView.svelte";
+
+// Available models → provider ids are "umans", "anthropic", "openai-compat".
+const MODELS = ["umans/umans-glm-5.2", "anthropic/claude-sonnet", "openai-compat/gpt-4o"] as const;
+
+// A status entry factory (defaults to a healthy limited provider). The new
+// concurrency-fixes fields (`cooldownMs`, `autoReduced`) are always present.
+function statusEntry(over: Partial<ConcurrencyStatusEntry> = {}): ConcurrencyStatusEntry {
+ return {
+ providerId: "umans",
+ limit: 4,
+ inFlight: 2,
+ queued: 1,
+ paused: false,
+ cooldownMs: 350,
+ autoReduced: false,
+ ...over,
+ };
+}
+
+// Fakes for the injected ports. Each resolves immediately so the mount effect's
+// initial load settles in a microtask (assertions await via findBy*). The status
+// list is mutable so a test can flip `autoReduced` between polls to simulate a
+// restore clearing the banner.
+function makeFakes(opts?: {
+ limits?: readonly { providerId: string; limit: number }[];
+ status?: ConcurrencyStatusEntry[];
+ /**
+ * When set, `saveLimit` rejects with this error (returns `ok: false`) — used
+ * to test the auto-reduce banner's inline restore-error feedback.
+ */
+ saveLimitError?: string;
+ /**
+ * Optional hook invoked inside `saveLimit` AFTER recording the call. Lets a
+ * test simulate a backend side-effect of the PUT (e.g. clearing `autoReduced`
+ * on the next status poll). Receives the providerId + limit + the fakes bag so
+ * it can mutate the status list. (A plain method reassignment would NOT reach
+ * the already-rendered component — the prop captured the original closure.)
+ */
+ onSaveLimit?: (
+ providerId: string,
+ limit: number,
+ self: { calls: MakeFakesCalls; setStatus: (next: ConcurrencyStatusEntry[]) => void },
+ ) => void;
+}) {
+ let limits = opts?.limits ?? [{ providerId: "umans", limit: 4 }];
+ let status = opts?.status ?? [statusEntry()];
+ const onSaveLimit = opts?.onSaveLimit;
+ const saveLimitError = opts?.saveLimitError;
+
+ const calls: MakeFakesCalls = {
+ loadLimits: 0,
+ loadStatus: 0,
+ saves: [] as { providerId: string; limit: number }[],
+ deletes: [] as string[],
+ cooldownSaves: [] as { providerId: string; cooldownMs: number }[],
+ };
+
+ function setStatus(next: ConcurrencyStatusEntry[]): void {
+ status = next;
+ }
+
+ return {
+ calls,
+ // Allow a test to mutate the status list between polls (e.g. clear
+ // autoReduced after a restore to simulate the next poll).
+ setStatus,
+ loadLimits: async (): Promise<ConcurrencyLimitsResult> => {
+ calls.loadLimits++;
+ return { ok: true, limits };
+ },
+ saveLimit: async (providerId: string, limit: number): Promise<ConcurrencyLimitResult> => {
+ calls.saves.push({ providerId, limit });
+ if (saveLimitError !== undefined) {
+ return { ok: false, error: saveLimitError };
+ }
+ // Reflect the new limit into the list the next load returns.
+ limits = [...limits.filter((l) => l.providerId !== providerId), { providerId, limit }];
+ if (onSaveLimit !== undefined) onSaveLimit(providerId, limit, { calls, setStatus });
+ return { ok: true, providerId, limit };
+ },
+ deleteLimit: async (providerId: string): Promise<ConcurrencyDeleteResult> => {
+ calls.deletes.push(providerId);
+ limits = limits.filter((l) => l.providerId !== providerId);
+ return { ok: true, providerId };
+ },
+ loadStatus: async (): Promise<ConcurrencyStatusResult> => {
+ calls.loadStatus++;
+ return { ok: true, providers: status };
+ },
+ saveCooldown: async (
+ providerId: string,
+ cooldownMs: number,
+ ): Promise<ConcurrencyCooldownResult> => {
+ calls.cooldownSaves.push({ providerId, cooldownMs });
+ // Reflect the new cooldown into the status list the next load returns.
+ status = status.map((s) => (s.providerId === providerId ? { ...s, cooldownMs } : s));
+ return { ok: true, providerId, cooldownMs };
+ },
+ };
+}
+
+type MakeFakesCalls = {
+ loadLimits: number;
+ loadStatus: number;
+ saves: { providerId: string; limit: number }[];
+ deletes: string[];
+ cooldownSaves: { providerId: string; cooldownMs: number }[];
+};
+
+function props(fakes: ReturnType<typeof makeFakes>) {
+ return {
+ models: MODELS as unknown as readonly string[],
+ loadLimits: fakes.loadLimits,
+ saveLimit: fakes.saveLimit,
+ deleteLimit: fakes.deleteLimit,
+ loadStatus: fakes.loadStatus,
+ saveCooldown: fakes.saveCooldown,
+ };
+}
+
+describe("ConcurrencyView", () => {
+ it("loads + renders the configured limits list on mount", async () => {
+ const fakes = makeFakes();
+ render(ConcurrencyView, { props: props(fakes) });
+
+ // The limits summary + the row's remove control (unique to the limits list).
+ expect(await screen.findByText(/1 limit configured/)).toBeInTheDocument();
+ expect(await screen.findByLabelText("Remove concurrency limit for umans")).toBeVisible();
+ expect(fakes.calls.loadLimits).toBeGreaterThanOrEqual(1);
+ expect(fakes.calls.loadStatus).toBeGreaterThanOrEqual(1);
+ });
+
+ it("renders the per-provider cooldown input seeded from the live status", async () => {
+ const fakes = makeFakes({ status: [statusEntry({ cooldownMs: 350 })] });
+ render(ConcurrencyView, { props: props(fakes) });
+
+ // The saved row's cooldown input (in the same row as the limit) is seeded 350.
+ const cooldownInput = await screen.findByLabelText("Release cooldown (ms) for umans");
+ expect((cooldownInput as HTMLInputElement).value).toBe("350");
+ });
+
+ it("renders a status line (in-flight count left + badge right) below the edit line", async () => {
+ // Default status: limit 4, inFlight 2, queued 1, not paused → Active, "2/4".
+ const fakes = makeFakes();
+ render(ConcurrencyView, { props: props(fakes) });
+
+ expect(await screen.findByText("2/4 in flight")).toBeVisible();
+ expect(await screen.findByText("Active")).toBeVisible();
+ });
+
+ it("shows the At-capacity badge when in-flight is at the cap with a queue", async () => {
+ const fakes = makeFakes({
+ status: [statusEntry({ inFlight: 4, limit: 4, queued: 3 })],
+ });
+ render(ConcurrencyView, { props: props(fakes) });
+
+ expect(await screen.findByText("4/4 in flight")).toBeVisible();
+ expect(await screen.findByText("At capacity")).toBeVisible();
+ });
+
+ it("shows the Idle badge when no slots are in flight", async () => {
+ const fakes = makeFakes({
+ status: [statusEntry({ inFlight: 0, limit: 4, queued: 0 })],
+ });
+ render(ConcurrencyView, { props: props(fakes) });
+
+ expect(await screen.findByText("0/4 in flight")).toBeVisible();
+ expect(await screen.findByText("Idle")).toBeVisible();
+ });
+
+ it("surfaces NO loading indicator during refresh (background poll is silent — no flicker)", async () => {
+ // The 2s status poll + post-mutation reloads are SILENT: they never toggle a
+ // visible loading state, so the Refresh button is plain-text (no spinner).
+ const fakes = makeFakes();
+ render(ConcurrencyView, { props: props(fakes) });
+
+ await screen.findByText(/1 limit configured/);
+
+ const limitsRefresh = screen.getByLabelText("Refresh concurrency limits");
+ expect(limitsRefresh).toHaveTextContent("Refresh");
+ expect(limitsRefresh.querySelector(".loading-spinner")).toBeNull();
+ expect(limitsRefresh).not.toBeDisabled();
+
+ // A manual refresh stays silent too (no spinner appears).
+ await fakes.loadStatus();
+ expect(limitsRefresh.querySelector(".loading-spinner")).toBeNull();
+ });
+
+ it("shows an empty state + Add button when no limits are configured", async () => {
+ const fakes = makeFakes({ limits: [], status: [] });
+ render(ConcurrencyView, { props: props(fakes) });
+
+ expect(await screen.findByText(/No limits configured/)).toBeInTheDocument();
+ expect(screen.getByRole("button", { name: "+ Add" })).toBeVisible();
+ // No provider dropdown until Add is clicked.
+ expect(screen.queryByLabelText("Provider")).toBeNull();
+ });
+
+ it("reveals a new item row (dropdown + limit + cooldown + Set + ✕) when Add is clicked", async () => {
+ const user = userEvent.setup();
+ const fakes = makeFakes({ limits: [], status: [] });
+ render(ConcurrencyView, { props: props(fakes) });
+
+ await screen.findByText(/No limits configured/);
+ await user.click(screen.getByRole("button", { name: "+ Add" }));
+
+ // The new-item row appears with a provider dropdown (auto-selected first),
+ // a limit input, a cooldown input (seeded with the default 350), Set + ✕.
+ const providerSelect = screen.getByLabelText("Provider");
+ expect((providerSelect as HTMLSelectElement).value).not.toBe("");
+ expect(screen.getByPlaceholderText("4")).toBeVisible();
+ const cooldownInput = screen.getByLabelText("New release cooldown (ms)");
+ expect((cooldownInput as HTMLInputElement).value).toBe("350");
+ expect(screen.getByRole("button", { name: "Set" })).toBeVisible();
+ expect(screen.getByRole("button", { name: "Cancel add" })).toBeVisible();
+ });
+
+ it("adds a provider limit via the new-item row Set (calls saveLimit + reloads)", async () => {
+ const user = userEvent.setup();
+ const fakes = makeFakes({ limits: [], status: [] });
+ render(ConcurrencyView, { props: props(fakes) });
+
+ await screen.findByText(/No limits configured/);
+ await user.click(screen.getByRole("button", { name: "+ Add" }));
+
+ const providerSelect = screen.getByLabelText("Provider");
+ // Choose "anthropic" from the dropdown (the list is auto-selected first).
+ await user.selectOptions(providerSelect, "anthropic");
+ await user.type(screen.getByPlaceholderText("4"), "8");
+ await user.click(screen.getByRole("button", { name: "Set" }));
+
+ expect(fakes.calls.saves).toEqual([{ providerId: "anthropic", limit: 8 }]);
+ // The cooldown was left at the default (350) → no extra cooldown PUT fired.
+ expect(fakes.calls.cooldownSaves).toHaveLength(0);
+ // After save the component reloads the limits list (now showing the row).
+ expect(fakes.calls.loadLimits).toBeGreaterThanOrEqual(2);
+ expect(await screen.findByText(/1 limit configured/)).toBeInTheDocument();
+ expect(await screen.findByLabelText("Remove concurrency limit for anthropic")).toBeVisible();
+ // The add row closed back to the Add button.
+ expect(screen.getByRole("button", { name: "+ Add" })).toBeVisible();
+ });
+
+ it("sends a cooldown PUT when the new item's cooldown is moved off the default", async () => {
+ const user = userEvent.setup();
+ const fakes = makeFakes({ limits: [], status: [] });
+ render(ConcurrencyView, { props: props(fakes) });
+
+ await screen.findByText(/No limits configured/);
+ await user.click(screen.getByRole("button", { name: "+ Add" }));
+
+ await user.selectOptions(screen.getByLabelText("Provider"), "anthropic");
+ await user.type(screen.getByPlaceholderText("4"), "8");
+ const cooldownInput = screen.getByLabelText("New release cooldown (ms)");
+ await user.clear(cooldownInput);
+ await user.type(cooldownInput, "500");
+ await user.click(screen.getByRole("button", { name: "Set" }));
+
+ expect(fakes.calls.saves).toEqual([{ providerId: "anthropic", limit: 8 }]);
+ expect(fakes.calls.cooldownSaves).toEqual([{ providerId: "anthropic", cooldownMs: 500 }]);
+ });
+
+ it("disables Set when the limit is empty/invalid (provider is auto-selected)", async () => {
+ const user = userEvent.setup();
+ const fakes = makeFakes({ limits: [], status: [] });
+ render(ConcurrencyView, { props: props(fakes) });
+
+ await screen.findByText(/No limits configured/);
+ await user.click(screen.getByRole("button", { name: "+ Add" }));
+
+ const providerSelect = screen.getByLabelText("Provider");
+ // A provider is auto-selected from the dropdown.
+ expect((providerSelect as HTMLSelectElement).value).not.toBe("");
+ const setBtn = screen.getByRole("button", { name: "Set" });
+ expect(setBtn).toBeDisabled(); // no limit entered yet
+
+ // An invalid (non-numeric) limit keeps Set disabled.
+ await user.type(screen.getByPlaceholderText("4"), "abc");
+ expect(setBtn).toBeDisabled();
+
+ // A valid positive-integer limit enables Set.
+ const limitInput = screen.getByPlaceholderText("4");
+ await user.clear(limitInput);
+ await user.type(limitInput, "5");
+ expect(setBtn).toBeEnabled();
+ });
+
+ it("shows no-providers + disables the dropdown when there are no models", async () => {
+ const user = userEvent.setup();
+ const fakes = makeFakes({ limits: [], status: [] });
+ render(ConcurrencyView, {
+ props: { ...props(fakes), models: [] as unknown as readonly string[] },
+ });
+
+ await screen.findByText(/No limits configured/);
+ await user.click(screen.getByRole("button", { name: "+ Add" }));
+
+ const providerSelect = screen.getByLabelText("Provider");
+ expect(providerSelect).toBeDisabled();
+ expect(screen.getByRole("button", { name: "Set" })).toBeDisabled();
+ });
+
+ it("cancels the new-item row (✕) without saving", async () => {
+ const user = userEvent.setup();
+ const fakes = makeFakes({ limits: [], status: [] });
+ render(ConcurrencyView, { props: props(fakes) });
+
+ await screen.findByText(/No limits configured/);
+ await user.click(screen.getByRole("button", { name: "+ Add" }));
+ await user.type(screen.getByPlaceholderText("4"), "8");
+ await user.click(screen.getByRole("button", { name: "Cancel add" }));
+
+ // The row collapses back to the Add button; nothing was saved.
+ expect(screen.queryByLabelText("Provider")).toBeNull();
+ expect(screen.getByRole("button", { name: "+ Add" })).toBeVisible();
+ expect(fakes.calls.saves).toHaveLength(0);
+ });
+
+ it("removes a provider limit via the row ✕ (calls deleteLimit + reloads)", async () => {
+ const user = userEvent.setup();
+ const fakes = makeFakes();
+ render(ConcurrencyView, { props: props(fakes) });
+
+ // Wait for the limits to load (unique summary) before interacting.
+ await screen.findByText(/1 limit configured/);
+ await user.click(screen.getByLabelText("Remove concurrency limit for umans"));
+
+ expect(fakes.calls.deletes).toEqual(["umans"]);
+ expect(fakes.calls.loadLimits).toBeGreaterThanOrEqual(2);
+ });
+
+ it("surfaces a load error from the limits endpoint", async () => {
+ const failing = {
+ models: MODELS as unknown as readonly string[],
+ loadLimits: async (): Promise<ConcurrencyLimitsResult> => ({
+ ok: false,
+ error: "Concurrency service not available",
+ }),
+ saveLimit: async (): Promise<ConcurrencyLimitResult> => ({ ok: false, error: "noop" }),
+ deleteLimit: async (): Promise<ConcurrencyDeleteResult> => ({ ok: false, error: "noop" }),
+ loadStatus: async (): Promise<ConcurrencyStatusResult> => ({ ok: true, providers: [] }),
+ saveCooldown: async (): Promise<ConcurrencyCooldownResult> => ({ ok: false, error: "noop" }),
+ };
+ render(ConcurrencyView, { props: failing });
+ expect(await screen.findByText("Concurrency service not available")).toBeVisible();
+ });
+
+ // ── Concurrency-fixes: auto-reduce banner + cooldown editing ────────────────
+
+ it("renders an auto-reduce banner (with the backend notice + Restore) when a provider is auto-reduced", async () => {
+ const fakes = makeFakes({
+ status: [
+ statusEntry({
+ limit: 3,
+ autoReduced: true,
+ autoReducedFrom: 4,
+ notice: "Concurrency limit auto-reduced to 3 after a 429 — restore manually when ready.",
+ }),
+ ],
+ });
+ render(ConcurrencyView, { props: props(fakes) });
+
+ // The banner shows the backend notice verbatim + a "Restore to 4" action.
+ expect(await screen.findByText(/auto-reduced to 3 after a 429/)).toBeVisible();
+ expect(await screen.findByRole("button", { name: /Restore to 4/ })).toBeVisible();
+ // The "Was 4, now 3." provenance line is shown.
+ expect(await screen.findByText(/Was 4, now 3\./)).toBeVisible();
+ });
+
+ it("clears the banner after Restore (next status poll shows autoReduced===false)", async () => {
+ const user = userEvent.setup();
+ // Start auto-reduced (limit 3, was 4). The restore PUT clears `autoReduced`
+ // server-side; the next status poll returns limit 4 + autoReduced===false →
+ // the banner drops.
+ const fakes = makeFakes({
+ status: [
+ statusEntry({
+ limit: 3,
+ autoReduced: true,
+ autoReducedFrom: 4,
+ notice: "Concurrency limit auto-reduced to 3 after a 429.",
+ }),
+ ],
+ onSaveLimit: (_providerId, limit, self) => {
+ // Simulate the backend clearing `autoReduced` on the manual PUT: the next
+ // status load returns the restored limit with autoReduced===false.
+ self.setStatus([statusEntry({ limit, autoReduced: false })]);
+ },
+ });
+ render(ConcurrencyView, { props: props(fakes) });
+
+ const restoreBtn = await screen.findByRole("button", { name: /Restore to 4/ });
+ await user.click(restoreBtn);
+
+ // The restore PUT the limit back to the original (autoReducedFrom = 4).
+ expect(fakes.calls.saves).toEqual([{ providerId: "umans", limit: 4 }]);
+ // The banner is gone (no Restore button, no notice text); the limits list
+ // now reflects the restored limit (the row's limit input re-seeds to 4).
+ const limitInput = await screen.findByLabelText("Concurrency limit for umans");
+ expect((limitInput as HTMLInputElement).value).toBe("4");
+ expect(screen.queryByRole("button", { name: /Restore to/ })).toBeNull();
+ expect(screen.queryByText(/auto-reduced to 3 after a 429/)).toBeNull();
+ });
+
+ it("dismisses the auto-reduce banner locally while it stays auto-reduced", async () => {
+ const user = userEvent.setup();
+ const fakes = makeFakes({
+ status: [
+ statusEntry({
+ limit: 3,
+ autoReduced: true,
+ autoReducedFrom: 4,
+ notice: "Concurrency limit auto-reduced to 3 after a 429.",
+ }),
+ ],
+ });
+ render(ConcurrencyView, { props: props(fakes) });
+
+ await screen.findByRole("button", { name: /Restore to 4/ });
+ // Dismiss the banner (hide locally — the provider is still auto-reduced).
+ await user.click(screen.getByLabelText("Dismiss auto-reduce notice for umans"));
+ expect(screen.queryByRole("button", { name: /Restore to/ })).toBeNull();
+ expect(screen.queryByText(/auto-reduced to 3 after a 429/)).toBeNull();
+ });
+
+ it("shows an inline error in the banner when the Restore PUT fails (no silent re-enable)", async () => {
+ const user = userEvent.setup();
+ const fakes = makeFakes({
+ status: [
+ statusEntry({
+ limit: 3,
+ autoReduced: true,
+ autoReducedFrom: 4,
+ notice: "Concurrency limit auto-reduced to 3 after a 429.",
+ }),
+ ],
+ saveLimitError: "Concurrency service not available",
+ });
+ render(ConcurrencyView, { props: props(fakes) });
+
+ const restoreBtn = await screen.findByRole("button", { name: /Restore to 4/ });
+ await user.click(restoreBtn);
+
+ // The error surfaces INLINE in the banner (near the restore action), not
+ // only in the far-away limits section. The banner is still present (restore
+ // did not succeed) and the button re-enabled for a retry.
+ expect(await screen.findByTestId("restore-error-umans")).toHaveTextContent(
+ "Concurrency service not available",
+ );
+ expect(screen.getByRole("button", { name: /Restore to 4/ })).toBeVisible();
+ expect(screen.getByRole("button", { name: /Restore to 4/ })).not.toBeDisabled();
+ // The restore PUT was attempted.
+ expect(fakes.calls.saves).toEqual([{ providerId: "umans", limit: 4 }]);
+ });
+
+ it("clears the inline restore error on a retry that succeeds", async () => {
+ const user = userEvent.setup();
+ // First restore fails; the second succeeds (clears autoReduced). Reassigning
+ // `fakes.saveLimit` BEFORE `props(fakes)` is captured would NOT reach the
+ // rendered component, so swap it BEFORE render here.
+ const fakes = makeFakes({
+ status: [
+ statusEntry({
+ limit: 3,
+ autoReduced: true,
+ autoReducedFrom: 4,
+ notice: "Concurrency limit auto-reduced to 3 after a 429.",
+ }),
+ ],
+ onSaveLimit: (_providerId, limit, self) => {
+ self.setStatus([statusEntry({ limit, autoReduced: false })]);
+ },
+ });
+ let attempts = 0;
+ const succeeding = fakes.saveLimit;
+ fakes.saveLimit = async (providerId, limit) => {
+ attempts++;
+ if (attempts === 1) return { ok: false, error: "Concurrency service not available" };
+ return succeeding(providerId, limit);
+ };
+ render(ConcurrencyView, { props: props(fakes) });
+
+ const restoreBtn = await screen.findByRole("button", { name: /Restore to 4/ });
+ await user.click(restoreBtn);
+ // First attempt: inline error appears.
+ expect(await screen.findByTestId("restore-error-umans")).toBeInTheDocument();
+
+ // Retry: the error clears, the banner drops (restore succeeded).
+ await user.click(screen.getByRole("button", { name: /Restore to 4/ }));
+ const limitInput = await screen.findByLabelText("Concurrency limit for umans");
+ expect((limitInput as HTMLInputElement).value).toBe("4");
+ expect(screen.queryByTestId("restore-error-umans")).toBeNull();
+ expect(screen.queryByRole("button", { name: /Restore to/ })).toBeNull();
+ });
+
+ it("edits the per-provider cooldown in the limit row (PUT /concurrency/cooldown + reloads)", async () => {
+ const user = userEvent.setup();
+ const fakes = makeFakes({ status: [statusEntry({ cooldownMs: 350 })] });
+ render(ConcurrencyView, { props: props(fakes) });
+
+ // Wait for the saved row + its cooldown input (seeded with 350).
+ const cooldownInput = await screen.findByLabelText("Release cooldown (ms) for umans");
+ expect((cooldownInput as HTMLInputElement).value).toBe("350");
+
+ await user.clear(cooldownInput);
+ await user.type(cooldownInput, "500");
+ await user.click(screen.getByRole("button", { name: "Set concurrency for umans" }));
+
+ // The cooldown PUT fired with the new value.
+ expect(fakes.calls.cooldownSaves).toEqual([{ providerId: "umans", cooldownMs: 500 }]);
+ // The limit was NOT re-saved (unchanged) — only the cooldown PUT fired.
+ expect(fakes.calls.saves).toHaveLength(0);
+ });
+
+ it("edits the per-provider limit in the row (PUT /concurrency/limits + reloads)", async () => {
+ const user = userEvent.setup();
+ const fakes = makeFakes();
+ render(ConcurrencyView, { props: props(fakes) });
+
+ const limitInput = await screen.findByLabelText("Concurrency limit for umans");
+ expect((limitInput as HTMLInputElement).value).toBe("4");
+
+ await user.clear(limitInput);
+ await user.type(limitInput, "8");
+ await user.click(screen.getByRole("button", { name: "Set concurrency for umans" }));
+
+ expect(fakes.calls.saves).toEqual([{ providerId: "umans", limit: 8 }]);
+ // Cooldown unchanged → no cooldown PUT.
+ expect(fakes.calls.cooldownSaves).toHaveLength(0);
+ });
+
+ it("rejects a negative cooldown input (Set disabled — non-negative integer only)", async () => {
+ const user = userEvent.setup();
+ const fakes = makeFakes({ status: [statusEntry({ cooldownMs: 350 })] });
+ render(ConcurrencyView, { props: props(fakes) });
+
+ const cooldownInput = await screen.findByLabelText("Release cooldown (ms) for umans");
+ // 0 is valid (no cooldown); a negative is not.
+ await user.clear(cooldownInput);
+ await user.type(cooldownInput, "0");
+ expect(screen.getByRole("button", { name: "Set concurrency for umans" })).toBeEnabled();
+
+ await user.clear(cooldownInput);
+ await user.type(cooldownInput, "-5");
+ expect(screen.getByRole("button", { name: "Set concurrency for umans" })).toBeDisabled();
+ expect(fakes.calls.cooldownSaves).toHaveLength(0);
+ });
+});
diff --git a/src/features/conversation-cache/cache.test.ts b/src/features/conversation-cache/cache.test.ts
index 89e81b8..ce1c60c 100644
--- a/src/features/conversation-cache/cache.test.ts
+++ b/src/features/conversation-cache/cache.test.ts
@@ -4,9 +4,9 @@ import { createConversationCache } from "./cache";
import type { ConversationCacheIndexEntry, ConversationChunkStore } from "./types";
const chunk = (seq: number, role: "user" | "assistant" = "user"): StoredChunk => ({
- seq,
- role,
- chunk: { type: "text", text: `chunk-${seq}` },
+ seq,
+ role,
+ chunk: { type: "text", text: `chunk-${seq}` },
});
/**
@@ -14,184 +14,184 @@ const chunk = (seq: number, role: "user" | "assistant" = "user"): StoredChunk =>
* An outermost edge: simulates the storage port without any real I/O.
*/
function createFakeStore(): ConversationChunkStore {
- const store = new Map<string, StoredChunk[]>();
-
- return {
- async load(conversationId) {
- return store.get(conversationId) ?? [];
- },
-
- async append(conversationId, chunks) {
- const existing = store.get(conversationId) ?? [];
- const existingSeqs = new Set(existing.map((c) => c.seq));
- const toAdd = chunks.filter((c) => !existingSeqs.has(c.seq));
- store.set(
- conversationId,
- [...existing, ...toAdd].sort((a, b) => a.seq - b.seq),
- );
- },
-
- async delete(conversationId) {
- store.delete(conversationId);
- },
-
- async index() {
- const entries: ConversationCacheIndexEntry[] = [];
- for (const [id, chunks] of store) {
- if (chunks.length === 0) continue;
- let maxSeq = 0;
- for (const c of chunks) {
- if (c.seq > maxSeq) maxSeq = c.seq;
- }
- entries.push({
- conversationId: id,
- chunkCount: chunks.length,
- maxSeq,
- });
- }
- return entries;
- },
- };
+ const store = new Map<string, StoredChunk[]>();
+
+ return {
+ async load(conversationId) {
+ return store.get(conversationId) ?? [];
+ },
+
+ async append(conversationId, chunks) {
+ const existing = store.get(conversationId) ?? [];
+ const existingSeqs = new Set(existing.map((c) => c.seq));
+ const toAdd = chunks.filter((c) => !existingSeqs.has(c.seq));
+ store.set(
+ conversationId,
+ [...existing, ...toAdd].sort((a, b) => a.seq - b.seq),
+ );
+ },
+
+ async delete(conversationId) {
+ store.delete(conversationId);
+ },
+
+ async index() {
+ const entries: ConversationCacheIndexEntry[] = [];
+ for (const [id, chunks] of store) {
+ if (chunks.length === 0) continue;
+ let maxSeq = 0;
+ for (const c of chunks) {
+ if (c.seq > maxSeq) maxSeq = c.seq;
+ }
+ entries.push({
+ conversationId: id,
+ chunkCount: chunks.length,
+ maxSeq,
+ });
+ }
+ return entries;
+ },
+ };
}
describe("cache.load", () => {
- it("returns stored chunks", async () => {
- const store = createFakeStore();
- const cache = createConversationCache(store);
- await store.append("conv-1", [chunk(1), chunk(2)]);
- const result = await cache.load("conv-1");
- expect(result).toEqual([chunk(1), chunk(2)]);
- });
-
- it("returns empty array for absent conversation", async () => {
- const store = createFakeStore();
- const cache = createConversationCache(store);
- const result = await cache.load("nonexistent");
- expect(result).toEqual([]);
- });
+ it("returns stored chunks", async () => {
+ const store = createFakeStore();
+ const cache = createConversationCache(store);
+ await store.append("conv-1", [chunk(1), chunk(2)]);
+ const result = await cache.load("conv-1");
+ expect(result).toEqual([chunk(1), chunk(2)]);
+ });
+
+ it("returns empty array for absent conversation", async () => {
+ const store = createFakeStore();
+ const cache = createConversationCache(store);
+ const result = await cache.load("nonexistent");
+ expect(result).toEqual([]);
+ });
});
describe("cache.commit", () => {
- it("appends only new chunks", async () => {
- const store = createFakeStore();
- const cache = createConversationCache(store);
- await store.append("conv-1", [chunk(1), chunk(2)]);
-
- const merged = await cache.commit("conv-1", [chunk(2), chunk(3)]);
- expect(merged).toEqual([chunk(1), chunk(2), chunk(3)]);
-
- // Verify store has all chunks
- const stored = await store.load("conv-1");
- expect(stored).toEqual([chunk(1), chunk(2), chunk(3)]);
- });
-
- it("returns full merged result", async () => {
- const store = createFakeStore();
- const cache = createConversationCache(store);
-
- const merged = await cache.commit("conv-1", [chunk(3), chunk(1)]);
- expect(merged).toEqual([chunk(1), chunk(3)]);
- });
-
- it("is idempotent — re-committing same chunks is a no-op", async () => {
- const store = createFakeStore();
- const cache = createConversationCache(store);
-
- await cache.commit("conv-1", [chunk(1), chunk(2)]);
- const merged = await cache.commit("conv-1", [chunk(1), chunk(2)]);
- expect(merged).toEqual([chunk(1), chunk(2)]);
-
- const stored = await store.load("conv-1");
- expect(stored).toEqual([chunk(1), chunk(2)]);
- });
+ it("appends only new chunks", async () => {
+ const store = createFakeStore();
+ const cache = createConversationCache(store);
+ await store.append("conv-1", [chunk(1), chunk(2)]);
+
+ const merged = await cache.commit("conv-1", [chunk(2), chunk(3)]);
+ expect(merged).toEqual([chunk(1), chunk(2), chunk(3)]);
+
+ // Verify store has all chunks
+ const stored = await store.load("conv-1");
+ expect(stored).toEqual([chunk(1), chunk(2), chunk(3)]);
+ });
+
+ it("returns full merged result", async () => {
+ const store = createFakeStore();
+ const cache = createConversationCache(store);
+
+ const merged = await cache.commit("conv-1", [chunk(3), chunk(1)]);
+ expect(merged).toEqual([chunk(1), chunk(3)]);
+ });
+
+ it("is idempotent — re-committing same chunks is a no-op", async () => {
+ const store = createFakeStore();
+ const cache = createConversationCache(store);
+
+ await cache.commit("conv-1", [chunk(1), chunk(2)]);
+ const merged = await cache.commit("conv-1", [chunk(1), chunk(2)]);
+ expect(merged).toEqual([chunk(1), chunk(2)]);
+
+ const stored = await store.load("conv-1");
+ expect(stored).toEqual([chunk(1), chunk(2)]);
+ });
});
describe("cache.sinceSeq", () => {
- it("returns max seq from cache", async () => {
- const store = createFakeStore();
- const cache = createConversationCache(store);
- await store.append("conv-1", [chunk(1), chunk(5), chunk(3)]);
- expect(await cache.sinceSeq("conv-1")).toBe(5);
- });
-
- it("returns 0 for empty conversation", async () => {
- const store = createFakeStore();
- const cache = createConversationCache(store);
- expect(await cache.sinceSeq("conv-1")).toBe(0);
- });
+ it("returns max seq from cache", async () => {
+ const store = createFakeStore();
+ const cache = createConversationCache(store);
+ await store.append("conv-1", [chunk(1), chunk(5), chunk(3)]);
+ expect(await cache.sinceSeq("conv-1")).toBe(5);
+ });
+
+ it("returns 0 for empty conversation", async () => {
+ const store = createFakeStore();
+ const cache = createConversationCache(store);
+ expect(await cache.sinceSeq("conv-1")).toBe(0);
+ });
});
describe("cache.evictIfOverBudget", () => {
- it("deletes selected conversations", async () => {
- const store = createFakeStore();
- const cache = createConversationCache(store, { maxChunks: 5 });
-
- await store.append("a", [chunk(1), chunk(2)]);
- await store.append("b", [chunk(1), chunk(2)]);
- await store.append("c", [chunk(1)]);
-
- // Total = 5, max = 5, under budget
- const evicted = await cache.evictIfOverBudget(null);
- expect(evicted).toEqual([]);
-
- // Add more to go over budget
- await store.append("d", [chunk(1), chunk(2), chunk(3)]);
- // Total = 8, max = 5, need to evict 3+ chunks
-
- const evicted2 = await cache.evictIfOverBudget(null);
- expect(evicted2.length).toBeGreaterThan(0);
-
- // Verify evicted conversations are deleted
- for (const id of evicted2) {
- expect(await store.load(id)).toEqual([]);
- }
- });
-
- it("never evicts the active conversation", async () => {
- const store = createFakeStore();
- const cache = createConversationCache(store, { maxChunks: 3 });
-
- await store.append("active", [chunk(1), chunk(2), chunk(3)]);
- await store.append("other", [chunk(1), chunk(2)]);
-
- // Total = 5, max = 3, need to evict 2+ chunks
- const evicted = await cache.evictIfOverBudget("active");
- expect(evicted).not.toContain("active");
- expect(evicted).toContain("other");
- });
-
- it("returns empty when under budget", async () => {
- const store = createFakeStore();
- const cache = createConversationCache(store, { maxChunks: 100 });
-
- await store.append("a", [chunk(1)]);
- await store.append("b", [chunk(1)]);
-
- const evicted = await cache.evictIfOverBudget(null);
- expect(evicted).toEqual([]);
- });
+ it("deletes selected conversations", async () => {
+ const store = createFakeStore();
+ const cache = createConversationCache(store, { maxChunks: 5 });
+
+ await store.append("a", [chunk(1), chunk(2)]);
+ await store.append("b", [chunk(1), chunk(2)]);
+ await store.append("c", [chunk(1)]);
+
+ // Total = 5, max = 5, under budget
+ const evicted = await cache.evictIfOverBudget(null);
+ expect(evicted).toEqual([]);
+
+ // Add more to go over budget
+ await store.append("d", [chunk(1), chunk(2), chunk(3)]);
+ // Total = 8, max = 5, need to evict 3+ chunks
+
+ const evicted2 = await cache.evictIfOverBudget(null);
+ expect(evicted2.length).toBeGreaterThan(0);
+
+ // Verify evicted conversations are deleted
+ for (const id of evicted2) {
+ expect(await store.load(id)).toEqual([]);
+ }
+ });
+
+ it("never evicts the active conversation", async () => {
+ const store = createFakeStore();
+ const cache = createConversationCache(store, { maxChunks: 3 });
+
+ await store.append("active", [chunk(1), chunk(2), chunk(3)]);
+ await store.append("other", [chunk(1), chunk(2)]);
+
+ // Total = 5, max = 3, need to evict 2+ chunks
+ const evicted = await cache.evictIfOverBudget("active");
+ expect(evicted).not.toContain("active");
+ expect(evicted).toContain("other");
+ });
+
+ it("returns empty when under budget", async () => {
+ const store = createFakeStore();
+ const cache = createConversationCache(store, { maxChunks: 100 });
+
+ await store.append("a", [chunk(1)]);
+ await store.append("b", [chunk(1)]);
+
+ const evicted = await cache.evictIfOverBudget(null);
+ expect(evicted).toEqual([]);
+ });
});
describe("cache.delete", () => {
- it("removes the conversation from the store", async () => {
- const store = createFakeStore();
- const cache = createConversationCache(store);
+ it("removes the conversation from the store", async () => {
+ const store = createFakeStore();
+ const cache = createConversationCache(store);
- await store.append("conv-1", [chunk(1), chunk(2)]);
- await cache.delete("conv-1");
+ await store.append("conv-1", [chunk(1), chunk(2)]);
+ await cache.delete("conv-1");
- const stored = await store.load("conv-1");
- expect(stored).toEqual([]);
- });
+ const stored = await store.load("conv-1");
+ expect(stored).toEqual([]);
+ });
- it("then load returns []", async () => {
- const store = createFakeStore();
- const cache = createConversationCache(store);
+ it("then load returns []", async () => {
+ const store = createFakeStore();
+ const cache = createConversationCache(store);
- await cache.commit("conv-1", [chunk(1), chunk(2), chunk(3)]);
- await cache.delete("conv-1");
+ await cache.commit("conv-1", [chunk(1), chunk(2), chunk(3)]);
+ await cache.delete("conv-1");
- const result = await cache.load("conv-1");
- expect(result).toEqual([]);
- });
+ const result = await cache.load("conv-1");
+ expect(result).toEqual([]);
+ });
});
diff --git a/src/features/conversation-cache/cache.ts b/src/features/conversation-cache/cache.ts
index 3d5743a..4953944 100644
--- a/src/features/conversation-cache/cache.ts
+++ b/src/features/conversation-cache/cache.ts
@@ -3,31 +3,31 @@ import { nextSinceSeq, reconcileCache, selectEvictions } from "./logic";
import type { ConversationChunkStore } from "./types";
export interface ConversationCache {
- /** Load all cached chunks for a conversation. */
- load(conversationId: string): Promise<readonly StoredChunk[]>;
+ /** Load all cached chunks for a conversation. */
+ load(conversationId: string): Promise<readonly StoredChunk[]>;
- /**
- * Load + reconcile + append new chunks.
- * Returns the merged cache (the new authoritative cache for this conversation).
- */
- commit(conversationId: string, incoming: readonly StoredChunk[]): Promise<readonly StoredChunk[]>;
+ /**
+ * Load + reconcile + append new chunks.
+ * Returns the merged cache (the new authoritative cache for this conversation).
+ */
+ commit(conversationId: string, incoming: readonly StoredChunk[]): Promise<readonly StoredChunk[]>;
- /** Return the `?sinceSeq=` cursor for the next incremental sync. */
- sinceSeq(conversationId: string): Promise<number>;
+ /** Return the `?sinceSeq=` cursor for the next incremental sync. */
+ sinceSeq(conversationId: string): Promise<number>;
- /**
- * Evict conversations over budget.
- * Returns the evicted conversationIds.
- */
- evictIfOverBudget(activeConversationId: string | null): Promise<readonly string[]>;
+ /**
+ * Evict conversations over budget.
+ * Returns the evicted conversationIds.
+ */
+ evictIfOverBudget(activeConversationId: string | null): Promise<readonly string[]>;
- /** Delete all cached data for a single conversation (local forget). */
- delete(conversationId: string): Promise<void>;
+ /** Delete all cached data for a single conversation (local forget). */
+ delete(conversationId: string): Promise<void>;
}
export interface ConversationCacheOptions {
- /** Maximum total chunks across all conversations before eviction triggers. */
- readonly maxChunks?: number;
+ /** Maximum total chunks across all conversations before eviction triggers. */
+ readonly maxChunks?: number;
}
const DEFAULT_MAX_CHUNKS = 10_000;
@@ -38,41 +38,41 @@ const DEFAULT_MAX_CHUNKS = 10_000;
* The ONLY impurity is the injected `store`; all logic delegates to pure functions.
*/
export function createConversationCache(
- store: ConversationChunkStore,
- opts?: ConversationCacheOptions,
+ store: ConversationChunkStore,
+ opts?: ConversationCacheOptions,
): ConversationCache {
- const maxChunks = opts?.maxChunks ?? DEFAULT_MAX_CHUNKS;
+ const maxChunks = opts?.maxChunks ?? DEFAULT_MAX_CHUNKS;
- return {
- async load(conversationId) {
- return store.load(conversationId);
- },
+ return {
+ async load(conversationId) {
+ return store.load(conversationId);
+ },
- async commit(conversationId, incoming) {
- const cached = await store.load(conversationId);
- const { merged, toAppend } = reconcileCache(cached, incoming);
- if (toAppend.length > 0) {
- await store.append(conversationId, toAppend);
- }
- return merged;
- },
+ async commit(conversationId, incoming) {
+ const cached = await store.load(conversationId);
+ const { merged, toAppend } = reconcileCache(cached, incoming);
+ if (toAppend.length > 0) {
+ await store.append(conversationId, toAppend);
+ }
+ return merged;
+ },
- async sinceSeq(conversationId) {
- const cached = await store.load(conversationId);
- return nextSinceSeq(cached);
- },
+ async sinceSeq(conversationId) {
+ const cached = await store.load(conversationId);
+ return nextSinceSeq(cached);
+ },
- async evictIfOverBudget(activeConversationId) {
- const idx = await store.index();
- const toEvict = selectEvictions(idx, { maxChunks, activeConversationId });
- for (const id of toEvict) {
- await store.delete(id);
- }
- return toEvict;
- },
+ async evictIfOverBudget(activeConversationId) {
+ const idx = await store.index();
+ const toEvict = selectEvictions(idx, { maxChunks, activeConversationId });
+ for (const id of toEvict) {
+ await store.delete(id);
+ }
+ return toEvict;
+ },
- async delete(conversationId) {
- await store.delete(conversationId);
- },
- };
+ async delete(conversationId) {
+ await store.delete(conversationId);
+ },
+ };
}
diff --git a/src/features/conversation-cache/index.ts b/src/features/conversation-cache/index.ts
index ba3f69a..25e2af7 100644
--- a/src/features/conversation-cache/index.ts
+++ b/src/features/conversation-cache/index.ts
@@ -2,7 +2,13 @@ export type { ConversationCache, ConversationCacheOptions } from "./cache";
export { createConversationCache } from "./cache";
export { nextSinceSeq, reconcileCache, selectEvictions } from "./logic";
export type {
- ConversationCacheIndexEntry,
- ConversationChunkStore,
- ReconcileResult,
+ ConversationCacheIndexEntry,
+ ConversationChunkStore,
+ ReconcileResult,
} from "./types";
+
+/** Public module manifest — aggregated by the shell's "Loaded Modules" view. */
+export const manifest = {
+ name: "conversation-cache",
+ description: "IndexedDB-backed chunk cache with reconciliation",
+} as const;
diff --git a/src/features/conversation-cache/logic.test.ts b/src/features/conversation-cache/logic.test.ts
index 858460a..880c32e 100644
--- a/src/features/conversation-cache/logic.test.ts
+++ b/src/features/conversation-cache/logic.test.ts
@@ -4,137 +4,137 @@ import { nextSinceSeq, reconcileCache, selectEvictions } from "./logic";
import type { ConversationCacheIndexEntry } from "./types";
const chunk = (seq: number, role: "user" | "assistant" = "user"): StoredChunk => ({
- seq,
- role,
- chunk: { type: "text", text: `chunk-${seq}` },
+ seq,
+ role,
+ chunk: { type: "text", text: `chunk-${seq}` },
});
describe("reconcileCache", () => {
- it("merges and dedupes by seq", () => {
- const cached = [chunk(1), chunk(2)];
- const incoming = [chunk(2), chunk(3)];
- const result = reconcileCache(cached, incoming);
- expect(result.merged).toEqual([chunk(1), chunk(2), chunk(3)]);
- });
-
- it("toAppend excludes already-cached seqs", () => {
- const cached = [chunk(1), chunk(2)];
- const incoming = [chunk(2), chunk(3)];
- const result = reconcileCache(cached, incoming);
- expect(result.toAppend).toEqual([chunk(3)]);
- });
-
- it("tolerates out-of-order incoming", () => {
- const cached = [chunk(1)];
- const incoming = [chunk(5), chunk(3), chunk(2)];
- const result = reconcileCache(cached, incoming);
- expect(result.merged).toEqual([chunk(1), chunk(2), chunk(3), chunk(5)]);
- expect(result.toAppend).toEqual([chunk(5), chunk(3), chunk(2)]);
- });
-
- it("returns empty merged and toAppend when both inputs are empty", () => {
- const result = reconcileCache([], []);
- expect(result.merged).toEqual([]);
- expect(result.toAppend).toEqual([]);
- });
-
- it("handles empty cached with incoming", () => {
- const incoming = [chunk(3), chunk(1)];
- const result = reconcileCache([], incoming);
- expect(result.merged).toEqual([chunk(1), chunk(3)]);
- expect(result.toAppend).toEqual([chunk(3), chunk(1)]);
- });
-
- it("handles cached with empty incoming", () => {
- const cached = [chunk(1), chunk(2)];
- const result = reconcileCache(cached, []);
- expect(result.merged).toEqual([chunk(1), chunk(2)]);
- expect(result.toAppend).toEqual([]);
- });
-
- it("is idempotent — re-reconciling same incoming produces same result", () => {
- const cached = [chunk(1)];
- const incoming = [chunk(2), chunk(3)];
- const first = reconcileCache(cached, incoming);
- const second = reconcileCache(first.merged, incoming);
- expect(second.merged).toEqual(first.merged);
- expect(second.toAppend).toEqual([]);
- });
+ it("merges and dedupes by seq", () => {
+ const cached = [chunk(1), chunk(2)];
+ const incoming = [chunk(2), chunk(3)];
+ const result = reconcileCache(cached, incoming);
+ expect(result.merged).toEqual([chunk(1), chunk(2), chunk(3)]);
+ });
+
+ it("toAppend excludes already-cached seqs", () => {
+ const cached = [chunk(1), chunk(2)];
+ const incoming = [chunk(2), chunk(3)];
+ const result = reconcileCache(cached, incoming);
+ expect(result.toAppend).toEqual([chunk(3)]);
+ });
+
+ it("tolerates out-of-order incoming", () => {
+ const cached = [chunk(1)];
+ const incoming = [chunk(5), chunk(3), chunk(2)];
+ const result = reconcileCache(cached, incoming);
+ expect(result.merged).toEqual([chunk(1), chunk(2), chunk(3), chunk(5)]);
+ expect(result.toAppend).toEqual([chunk(5), chunk(3), chunk(2)]);
+ });
+
+ it("returns empty merged and toAppend when both inputs are empty", () => {
+ const result = reconcileCache([], []);
+ expect(result.merged).toEqual([]);
+ expect(result.toAppend).toEqual([]);
+ });
+
+ it("handles empty cached with incoming", () => {
+ const incoming = [chunk(3), chunk(1)];
+ const result = reconcileCache([], incoming);
+ expect(result.merged).toEqual([chunk(1), chunk(3)]);
+ expect(result.toAppend).toEqual([chunk(3), chunk(1)]);
+ });
+
+ it("handles cached with empty incoming", () => {
+ const cached = [chunk(1), chunk(2)];
+ const result = reconcileCache(cached, []);
+ expect(result.merged).toEqual([chunk(1), chunk(2)]);
+ expect(result.toAppend).toEqual([]);
+ });
+
+ it("is idempotent — re-reconciling same incoming produces same result", () => {
+ const cached = [chunk(1)];
+ const incoming = [chunk(2), chunk(3)];
+ const first = reconcileCache(cached, incoming);
+ const second = reconcileCache(first.merged, incoming);
+ expect(second.merged).toEqual(first.merged);
+ expect(second.toAppend).toEqual([]);
+ });
});
describe("nextSinceSeq", () => {
- it("returns max seq", () => {
- const cached = [chunk(1), chunk(5), chunk(3)];
- expect(nextSinceSeq(cached)).toBe(5);
- });
-
- it("returns 0 when empty", () => {
- expect(nextSinceSeq([])).toBe(0);
- });
-
- it("returns single seq for single chunk", () => {
- expect(nextSinceSeq([chunk(42)])).toBe(42);
- });
+ it("returns max seq", () => {
+ const cached = [chunk(1), chunk(5), chunk(3)];
+ expect(nextSinceSeq(cached)).toBe(5);
+ });
+
+ it("returns 0 when empty", () => {
+ expect(nextSinceSeq([])).toBe(0);
+ });
+
+ it("returns single seq for single chunk", () => {
+ expect(nextSinceSeq([chunk(42)])).toBe(42);
+ });
});
describe("selectEvictions", () => {
- it("never evicts the active conversation", () => {
- const index: ConversationCacheIndexEntry[] = [
- { conversationId: "active", chunkCount: 100, maxSeq: 100, lastAccess: 1000 },
- { conversationId: "other", chunkCount: 50, maxSeq: 50, lastAccess: 1 },
- ];
- const result = selectEvictions(index, { maxChunks: 50, activeConversationId: "active" });
- expect(result).not.toContain("active");
- expect(result).toContain("other");
- });
-
- it("evicts LRU until under budget", () => {
- const index: ConversationCacheIndexEntry[] = [
- { conversationId: "a", chunkCount: 30, maxSeq: 30, lastAccess: 100 },
- { conversationId: "b", chunkCount: 30, maxSeq: 30, lastAccess: 50 },
- { conversationId: "c", chunkCount: 30, maxSeq: 30, lastAccess: 200 },
- { conversationId: "d", chunkCount: 30, maxSeq: 30, lastAccess: 10 },
- ];
- // Total = 120, max = 60, need to evict 60+ chunks
- // LRU order: d(10), b(50), a(100), c(200)
- const result = selectEvictions(index, { maxChunks: 60, activeConversationId: null });
- expect(result).toEqual(["d", "b"]);
- });
-
- it("is a no-op under budget", () => {
- const index: ConversationCacheIndexEntry[] = [
- { conversationId: "a", chunkCount: 10, maxSeq: 10, lastAccess: 100 },
- { conversationId: "b", chunkCount: 10, maxSeq: 10, lastAccess: 50 },
- ];
- const result = selectEvictions(index, { maxChunks: 100, activeConversationId: null });
- expect(result).toEqual([]);
- });
-
- it("returns empty for empty index", () => {
- const result = selectEvictions([], { maxChunks: 100, activeConversationId: null });
- expect(result).toEqual([]);
- });
-
- it("tie-breaks by smaller maxSeq when lastAccess is equal", () => {
- const index: ConversationCacheIndexEntry[] = [
- { conversationId: "a", chunkCount: 30, maxSeq: 100, lastAccess: 50 },
- { conversationId: "b", chunkCount: 30, maxSeq: 50, lastAccess: 50 },
- { conversationId: "c", chunkCount: 30, maxSeq: 200, lastAccess: 50 },
- ];
- // Total = 90, max = 60, need to evict 30+ chunks
- // All have same lastAccess, tie-break by maxSeq: b(50), a(100), c(200)
- const result = selectEvictions(index, { maxChunks: 60, activeConversationId: null });
- expect(result).toEqual(["b"]);
- });
-
- it("handles missing lastAccess (treated as 0)", () => {
- const index: ConversationCacheIndexEntry[] = [
- { conversationId: "a", chunkCount: 30, maxSeq: 30, lastAccess: 100 },
- { conversationId: "b", chunkCount: 30, maxSeq: 30 },
- ];
- // Total = 60, max = 30, need to evict 30+ chunks
- // b has no lastAccess (0), a has 100
- const result = selectEvictions(index, { maxChunks: 30, activeConversationId: null });
- expect(result).toEqual(["b"]);
- });
+ it("never evicts the active conversation", () => {
+ const index: ConversationCacheIndexEntry[] = [
+ { conversationId: "active", chunkCount: 100, maxSeq: 100, lastAccess: 1000 },
+ { conversationId: "other", chunkCount: 50, maxSeq: 50, lastAccess: 1 },
+ ];
+ const result = selectEvictions(index, { maxChunks: 50, activeConversationId: "active" });
+ expect(result).not.toContain("active");
+ expect(result).toContain("other");
+ });
+
+ it("evicts LRU until under budget", () => {
+ const index: ConversationCacheIndexEntry[] = [
+ { conversationId: "a", chunkCount: 30, maxSeq: 30, lastAccess: 100 },
+ { conversationId: "b", chunkCount: 30, maxSeq: 30, lastAccess: 50 },
+ { conversationId: "c", chunkCount: 30, maxSeq: 30, lastAccess: 200 },
+ { conversationId: "d", chunkCount: 30, maxSeq: 30, lastAccess: 10 },
+ ];
+ // Total = 120, max = 60, need to evict 60+ chunks
+ // LRU order: d(10), b(50), a(100), c(200)
+ const result = selectEvictions(index, { maxChunks: 60, activeConversationId: null });
+ expect(result).toEqual(["d", "b"]);
+ });
+
+ it("is a no-op under budget", () => {
+ const index: ConversationCacheIndexEntry[] = [
+ { conversationId: "a", chunkCount: 10, maxSeq: 10, lastAccess: 100 },
+ { conversationId: "b", chunkCount: 10, maxSeq: 10, lastAccess: 50 },
+ ];
+ const result = selectEvictions(index, { maxChunks: 100, activeConversationId: null });
+ expect(result).toEqual([]);
+ });
+
+ it("returns empty for empty index", () => {
+ const result = selectEvictions([], { maxChunks: 100, activeConversationId: null });
+ expect(result).toEqual([]);
+ });
+
+ it("tie-breaks by smaller maxSeq when lastAccess is equal", () => {
+ const index: ConversationCacheIndexEntry[] = [
+ { conversationId: "a", chunkCount: 30, maxSeq: 100, lastAccess: 50 },
+ { conversationId: "b", chunkCount: 30, maxSeq: 50, lastAccess: 50 },
+ { conversationId: "c", chunkCount: 30, maxSeq: 200, lastAccess: 50 },
+ ];
+ // Total = 90, max = 60, need to evict 30+ chunks
+ // All have same lastAccess, tie-break by maxSeq: b(50), a(100), c(200)
+ const result = selectEvictions(index, { maxChunks: 60, activeConversationId: null });
+ expect(result).toEqual(["b"]);
+ });
+
+ it("handles missing lastAccess (treated as 0)", () => {
+ const index: ConversationCacheIndexEntry[] = [
+ { conversationId: "a", chunkCount: 30, maxSeq: 30, lastAccess: 100 },
+ { conversationId: "b", chunkCount: 30, maxSeq: 30 },
+ ];
+ // Total = 60, max = 30, need to evict 30+ chunks
+ // b has no lastAccess (0), a has 100
+ const result = selectEvictions(index, { maxChunks: 30, activeConversationId: null });
+ expect(result).toEqual(["b"]);
+ });
});
diff --git a/src/features/conversation-cache/logic.ts b/src/features/conversation-cache/logic.ts
index 4a4479e..3cb23e2 100644
--- a/src/features/conversation-cache/logic.ts
+++ b/src/features/conversation-cache/logic.ts
@@ -9,24 +9,24 @@ import type { ConversationCacheIndexEntry, ReconcileResult } from "./types";
* (exactly what to persist). Idempotent; tolerant of out-of-order/overlapping `incoming`.
*/
export function reconcileCache(
- cached: readonly StoredChunk[],
- incoming: readonly StoredChunk[],
+ cached: readonly StoredChunk[],
+ incoming: readonly StoredChunk[],
): ReconcileResult {
- const seen = new Set<number>();
- for (const chunk of cached) {
- seen.add(chunk.seq);
- }
+ const seen = new Set<number>();
+ for (const chunk of cached) {
+ seen.add(chunk.seq);
+ }
- const toAppend: StoredChunk[] = [];
- for (const chunk of incoming) {
- if (!seen.has(chunk.seq)) {
- toAppend.push(chunk);
- seen.add(chunk.seq);
- }
- }
+ const toAppend: StoredChunk[] = [];
+ for (const chunk of incoming) {
+ if (!seen.has(chunk.seq)) {
+ toAppend.push(chunk);
+ seen.add(chunk.seq);
+ }
+ }
- const merged = [...cached, ...toAppend].sort((a, b) => a.seq - b.seq);
- return { merged, toAppend };
+ const merged = [...cached, ...toAppend].sort((a, b) => a.seq - b.seq);
+ return { merged, toAppend };
}
/**
@@ -34,12 +34,12 @@ export function reconcileCache(
* This is the `?sinceSeq=` cursor for the next incremental sync.
*/
export function nextSinceSeq(cached: readonly StoredChunk[]): number {
- if (cached.length === 0) return 0;
- let max = 0;
- for (const chunk of cached) {
- if (chunk.seq > max) max = chunk.seq;
- }
- return max;
+ if (cached.length === 0) return 0;
+ let max = 0;
+ for (const chunk of cached) {
+ if (chunk.seq > max) max = chunk.seq;
+ }
+ return max;
}
/**
@@ -50,28 +50,28 @@ export function nextSinceSeq(cached: readonly StoredChunk[]): number {
* Returns [] when under budget.
*/
export function selectEvictions(
- index: readonly ConversationCacheIndexEntry[],
- opts: { maxChunks: number; activeConversationId: string | null },
+ index: readonly ConversationCacheIndexEntry[],
+ opts: { maxChunks: number; activeConversationId: string | null },
): readonly string[] {
- const totalChunks = index.reduce((sum, entry) => sum + entry.chunkCount, 0);
- if (totalChunks <= opts.maxChunks) return [];
+ const totalChunks = index.reduce((sum, entry) => sum + entry.chunkCount, 0);
+ if (totalChunks <= opts.maxChunks) return [];
- const candidates = index
- .filter((entry) => entry.conversationId !== opts.activeConversationId)
- .sort((a, b) => {
- const aAccess = a.lastAccess ?? 0;
- const bAccess = b.lastAccess ?? 0;
- if (aAccess !== bAccess) return aAccess - bAccess;
- return a.maxSeq - b.maxSeq;
- });
+ const candidates = index
+ .filter((entry) => entry.conversationId !== opts.activeConversationId)
+ .sort((a, b) => {
+ const aAccess = a.lastAccess ?? 0;
+ const bAccess = b.lastAccess ?? 0;
+ if (aAccess !== bAccess) return aAccess - bAccess;
+ return a.maxSeq - b.maxSeq;
+ });
- let remaining = totalChunks;
- const evictions: string[] = [];
- for (const entry of candidates) {
- if (remaining <= opts.maxChunks) break;
- evictions.push(entry.conversationId);
- remaining -= entry.chunkCount;
- }
+ let remaining = totalChunks;
+ const evictions: string[] = [];
+ for (const entry of candidates) {
+ if (remaining <= opts.maxChunks) break;
+ evictions.push(entry.conversationId);
+ remaining -= entry.chunkCount;
+ }
- return evictions;
+ return evictions;
}
diff --git a/src/features/conversation-cache/types.ts b/src/features/conversation-cache/types.ts
index 2a349cc..345ab71 100644
--- a/src/features/conversation-cache/types.ts
+++ b/src/features/conversation-cache/types.ts
@@ -2,10 +2,10 @@ import type { StoredChunk } from "@dispatch/wire";
/** Metadata entry for a cached conversation, used by eviction logic. */
export interface ConversationCacheIndexEntry {
- readonly conversationId: string;
- readonly chunkCount: number;
- readonly maxSeq: number;
- readonly lastAccess?: number;
+ readonly conversationId: string;
+ readonly chunkCount: number;
+ readonly maxSeq: number;
+ readonly lastAccess?: number;
}
/**
@@ -17,26 +17,26 @@ export interface ConversationCacheIndexEntry {
* All methods MUST be idempotent on `seq`: re-appending an existing seq is a no-op.
*/
export interface ConversationChunkStore {
- /** Load all cached chunks for a conversation, seq-ordered. Returns [] if absent. */
- load(conversationId: string): Promise<readonly StoredChunk[]>;
+ /** Load all cached chunks for a conversation, seq-ordered. Returns [] if absent. */
+ load(conversationId: string): Promise<readonly StoredChunk[]>;
- /**
- * Append committed chunks to a conversation's cache.
- * MUST be idempotent on `seq`: re-appending an existing seq is a no-op.
- */
- append(conversationId: string, chunks: readonly StoredChunk[]): Promise<void>;
+ /**
+ * Append committed chunks to a conversation's cache.
+ * MUST be idempotent on `seq`: re-appending an existing seq is a no-op.
+ */
+ append(conversationId: string, chunks: readonly StoredChunk[]): Promise<void>;
- /** Delete all cached data for a conversation. */
- delete(conversationId: string): Promise<void>;
+ /** Delete all cached data for a conversation. */
+ delete(conversationId: string): Promise<void>;
- /** Return metadata for all cached conversations (for eviction). */
- index(): Promise<readonly ConversationCacheIndexEntry[]>;
+ /** Return metadata for all cached conversations (for eviction). */
+ index(): Promise<readonly ConversationCacheIndexEntry[]>;
}
/** Result of reconciling cached chunks with incoming authoritative chunks. */
export interface ReconcileResult {
- /** The merged, deduplicated, seq-ordered chunk list. */
- readonly merged: readonly StoredChunk[];
- /** The subset of incoming chunks that need to be appended (not already cached). */
- readonly toAppend: readonly StoredChunk[];
+ /** The merged, deduplicated, seq-ordered chunk list. */
+ readonly merged: readonly StoredChunk[];
+ /** The subset of incoming chunks that need to be appended (not already cached). */
+ readonly toAppend: readonly StoredChunk[];
}
diff --git a/src/features/cwd-lsp/index.ts b/src/features/cwd-lsp/index.ts
new file mode 100644
index 0000000..36ea1b2
--- /dev/null
+++ b/src/features/cwd-lsp/index.ts
@@ -0,0 +1,14 @@
+export type {
+ CwdSaveResult,
+ LoadLspStatus,
+ LspStatusResult,
+ SaveCwd,
+} from "./logic/view-model";
+export { default as CwdField } from "./ui/CwdField.svelte";
+export { default as LspStatusView } from "./ui/LspStatusView.svelte";
+
+/** Public module manifest — aggregated by the shell's "Loaded Modules" view. */
+export const manifest = {
+ name: "cwd-lsp",
+ description: "Per-conversation working directory + language-server status",
+} as const;
diff --git a/src/features/cwd-lsp/logic/view-model.test.ts b/src/features/cwd-lsp/logic/view-model.test.ts
new file mode 100644
index 0000000..7bc0aad
--- /dev/null
+++ b/src/features/cwd-lsp/logic/view-model.test.ts
@@ -0,0 +1,101 @@
+import type { LspServerInfo } from "@dispatch/transport-contract";
+import { describe, expect, it } from "vitest";
+import {
+ cwdChanged,
+ isSubmittableCwd,
+ normalizeCwd,
+ summarizeServers,
+ viewLspServer,
+ viewLspServers,
+} from "./view-model";
+
+const server = (over: Partial<LspServerInfo> = {}): LspServerInfo => ({
+ id: "typescript",
+ name: "TypeScript",
+ root: "/home/me/project",
+ extensions: [".ts", ".tsx"],
+ state: "connected",
+ ...over,
+});
+
+describe("cwd helpers", () => {
+ it("normalizeCwd trims surrounding whitespace", () => {
+ expect(normalizeCwd(" /a/b ")).toBe("/a/b");
+ expect(normalizeCwd("\t/x\n")).toBe("/x");
+ });
+
+ it("isSubmittableCwd is false for empty / whitespace-only", () => {
+ expect(isSubmittableCwd("")).toBe(false);
+ expect(isSubmittableCwd(" ")).toBe(false);
+ expect(isSubmittableCwd("/a")).toBe(true);
+ });
+
+ it("cwdChanged: true only when a non-empty trimmed value differs from current", () => {
+ expect(cwdChanged("/a/b", null)).toBe(true);
+ expect(cwdChanged("/a/b", "/a/b")).toBe(false);
+ expect(cwdChanged(" /a/b ", "/a/b")).toBe(false); // trim-equal → no change
+ expect(cwdChanged("/a/c", "/a/b")).toBe(true);
+ expect(cwdChanged("", "/a/b")).toBe(false); // empty is not a change (can't clear)
+ expect(cwdChanged(" ", null)).toBe(false);
+ });
+});
+
+describe("viewLspServer", () => {
+ it("connected → success badge, not busy, no error", () => {
+ const v = viewLspServer(server({ state: "connected" }));
+ expect(v.badge).toBe("success");
+ expect(v.statusLabel).toBe("Connected");
+ expect(v.busy).toBe(false);
+ expect(v.error).toBeNull();
+ expect(v.extensionsLabel).toBe(".ts .tsx");
+ });
+
+ it("starting / not-started → busy (spinner) with warning / neutral badge", () => {
+ const starting = viewLspServer(server({ state: "starting" }));
+ expect(starting.badge).toBe("warning");
+ expect(starting.busy).toBe(true);
+
+ const notStarted = viewLspServer(server({ state: "not-started" }));
+ expect(notStarted.badge).toBe("neutral");
+ expect(notStarted.busy).toBe(true);
+ });
+
+ it("error → error badge + surfaces the reason (with a fallback)", () => {
+ const withReason = viewLspServer(server({ state: "error", error: "ENOENT" }));
+ expect(withReason.badge).toBe("error");
+ expect(withReason.busy).toBe(false);
+ expect(withReason.error).toBe("ENOENT");
+
+ const noReason = viewLspServer(server({ state: "error" }));
+ expect(noReason.error).toBe("Failed to start");
+ });
+
+ it("viewLspServers maps a list preserving order", () => {
+ const views = viewLspServers([server({ id: "a" }), server({ id: "b" })]);
+ expect(views.map((v) => v.id)).toEqual(["a", "b"]);
+ });
+});
+
+describe("summarizeServers", () => {
+ it("empty list", () => {
+ expect(summarizeServers([])).toBe("No language servers");
+ });
+
+ it("counts connected / starting / errors", () => {
+ expect(summarizeServers([server({ state: "connected" })])).toBe("1 connected");
+ expect(
+ summarizeServers([
+ server({ id: "a", state: "connected" }),
+ server({ id: "b", state: "error" }),
+ ]),
+ ).toBe("1 connected, 1 error");
+ expect(
+ summarizeServers([
+ server({ id: "a", state: "connected" }),
+ server({ id: "b", state: "starting" }),
+ server({ id: "c", state: "error" }),
+ server({ id: "d", state: "error" }),
+ ]),
+ ).toBe("1 connected, 1 starting, 2 errors");
+ });
+});
diff --git a/src/features/cwd-lsp/logic/view-model.ts b/src/features/cwd-lsp/logic/view-model.ts
new file mode 100644
index 0000000..7642418
--- /dev/null
+++ b/src/features/cwd-lsp/logic/view-model.ts
@@ -0,0 +1,130 @@
+import type { LspServerInfo, LspServerState } from "@dispatch/transport-contract";
+
+/**
+ * Pure core for the cwd-lsp feature — zero DOM, zero effects, zero Svelte.
+ *
+ * The cwd-lsp feature exposes a conversation's per-tab working directory (cwd)
+ * and the live status of the language servers configured for that cwd. This
+ * module holds the pure logic: cwd normalization/validation, the mapping of a
+ * backend `LspServerState` to a display badge, and a one-line server summary.
+ * The effects (the HTTP get/set cwd + get LSP status) are INJECTED via the ports
+ * below; the composition root implements them.
+ */
+
+// ── Injected ports (consumer-defines-port; the composition root adapts the
+// store's HTTP calls to these shapes). ──────────────────────────────────────
+
+/** Outcome of `PUT /conversations/:id/cwd`; `null` when no real conversation is focused. */
+export type CwdSaveResult =
+ | { readonly ok: true; readonly cwd: string | null }
+ | { readonly ok: false; readonly error: string };
+
+export type SaveCwd = (cwd: string) => Promise<CwdSaveResult | null>;
+
+/** Outcome of `GET /conversations/:id/lsp`; `null` when no real conversation is focused. */
+export type LspStatusResult =
+ | { readonly ok: true; readonly cwd: string | null; readonly servers: readonly LspServerInfo[] }
+ | { readonly ok: false; readonly error: string };
+
+export type LoadLspStatus = () => Promise<LspStatusResult | null>;
+
+// ── cwd helpers ───────────────────────────────────────────────────────────────
+
+/** Trim surrounding whitespace; the backend rejects an empty cwd. */
+export function normalizeCwd(raw: string): string {
+ return raw.trim();
+}
+
+/** Whether a typed cwd is submittable (non-empty after trim). */
+export function isSubmittableCwd(raw: string): boolean {
+ return normalizeCwd(raw).length > 0;
+}
+
+/**
+ * Whether saving `typed` would change the persisted `current` cwd. A no-op save
+ * (unchanged, or empty) should be disabled.
+ */
+export function cwdChanged(typed: string, current: string | null): boolean {
+ const next = normalizeCwd(typed);
+ if (next.length === 0) return false;
+ return next !== (current ?? "");
+}
+
+// ── LSP server status → display view ──────────────────────────────────────────
+
+export type Badge = "success" | "warning" | "error" | "neutral";
+
+export interface LspServerView {
+ readonly id: string;
+ readonly name: string;
+ readonly root: string;
+ /** Space-joined extension list, e.g. ".ts .tsx". */
+ readonly extensionsLabel: string;
+ readonly state: LspServerState;
+ readonly statusLabel: string;
+ readonly badge: Badge;
+ /** True while the state is transient (show a spinner). */
+ readonly busy: boolean;
+ /** The error reason when `state === "error"`, else null. */
+ readonly error: string | null;
+}
+
+/** Map a server's state to a display label + badge severity + busy flag. */
+export function viewLspServer(server: LspServerInfo): LspServerView {
+ let statusLabel: string;
+ let badge: Badge;
+ let busy = false;
+ switch (server.state) {
+ case "connected":
+ statusLabel = "Connected";
+ badge = "success";
+ break;
+ case "starting":
+ statusLabel = "Starting…";
+ badge = "warning";
+ busy = true;
+ break;
+ case "not-started":
+ statusLabel = "Not started";
+ badge = "neutral";
+ busy = true;
+ break;
+ case "error":
+ statusLabel = "Error";
+ badge = "error";
+ break;
+ }
+ return {
+ id: server.id,
+ name: server.name,
+ root: server.root,
+ extensionsLabel: server.extensions.join(" "),
+ state: server.state,
+ statusLabel,
+ badge,
+ busy,
+ error: server.state === "error" ? (server.error ?? "Failed to start") : null,
+ };
+}
+
+export function viewLspServers(servers: readonly LspServerInfo[]): readonly LspServerView[] {
+ return servers.map(viewLspServer);
+}
+
+/** A short one-line summary, e.g. "2 connected" / "1 connected, 1 error". */
+export function summarizeServers(servers: readonly LspServerInfo[]): string {
+ if (servers.length === 0) return "No language servers";
+ let connected = 0;
+ let errored = 0;
+ let pending = 0;
+ for (const s of servers) {
+ if (s.state === "connected") connected++;
+ else if (s.state === "error") errored++;
+ else pending++;
+ }
+ const parts: string[] = [];
+ if (connected > 0) parts.push(`${connected} connected`);
+ if (pending > 0) parts.push(`${pending} starting`);
+ if (errored > 0) parts.push(`${errored} error${errored === 1 ? "" : "s"}`);
+ return parts.join(", ");
+}
diff --git a/src/features/cwd-lsp/ui/CwdField.svelte b/src/features/cwd-lsp/ui/CwdField.svelte
new file mode 100644
index 0000000..c83f5ce
--- /dev/null
+++ b/src/features/cwd-lsp/ui/CwdField.svelte
@@ -0,0 +1,96 @@
+<script lang="ts">
+ import { untrack } from "svelte";
+ import { cwdChanged, normalizeCwd, type SaveCwd } from "../logic/view-model";
+
+ let {
+ cwd,
+ canEdit,
+ save,
+ }: {
+ /** The active conversation's persisted cwd, or null when unset. */
+ cwd: string | null;
+ /** Whether a real conversation is focused (a draft can't persist a cwd yet). */
+ canEdit: boolean;
+ save: SaveCwd;
+ } = $props();
+
+ // Start empty; the $effect below seeds from the (async-loaded) cwd prop. (Reading
+ // the prop directly into initial $state would only capture its first value.)
+ let value = $state("");
+ let lastSeed = $state("");
+ let saving = $state(false);
+ let error = $state<string | null>(null);
+ let justSaved = $state(false);
+
+ // Seed the input from the persisted cwd (it loads async). Only reseed while the
+ // field is untouched, so an in-flight load can't clobber what the user typed.
+ // Re-mounted per conversation, so there is no cross-tab bleed.
+ $effect(() => {
+ const incoming = cwd ?? "";
+ untrack(() => {
+ if (value === lastSeed) value = incoming;
+ lastSeed = incoming;
+ });
+ });
+
+ const dirty = $derived(cwdChanged(value, cwd));
+
+ async function handleSave() {
+ if (saving || !canEdit || !dirty) return;
+ saving = true;
+ error = null;
+ justSaved = false;
+ const result = await save(normalizeCwd(value));
+ saving = false;
+ if (result === null) return;
+ if (result.ok) {
+ justSaved = true;
+ } else {
+ error = result.error;
+ }
+ }
+
+ function onInput() {
+ justSaved = false;
+ error = null;
+ }
+</script>
+
+<div class="flex flex-col gap-1">
+ <span class="text-xs font-semibold uppercase opacity-60">Working directory</span>
+ <div class="flex items-center gap-2">
+ <input
+ type="text"
+ class="input input-bordered input-sm w-full font-mono text-xs"
+ placeholder={canEdit ? "/abs/path/to/project" : "Open a conversation first"}
+ bind:value
+ disabled={!canEdit || saving}
+ oninput={onInput}
+ onkeydown={(e) => {
+ if (e.key === "Enter") handleSave();
+ }}
+ aria-label="Working directory"
+ />
+ <button
+ type="button"
+ class="btn btn-primary btn-sm"
+ disabled={!canEdit || saving || !dirty}
+ onclick={handleSave}
+ >
+ {#if saving}
+ <span class="loading loading-spinner loading-xs"></span>
+ {:else}
+ Set
+ {/if}
+ </button>
+ </div>
+ {#if !canEdit}
+ <p class="text-xs opacity-60">Start or open a conversation to set its working directory.</p>
+ {:else if error}
+ <p class="text-xs text-error">{error}</p>
+ {:else if justSaved && !dirty}
+ <p class="text-xs text-success">Saved.</p>
+ {:else}
+ <p class="text-xs opacity-50">Defaults each turn's cwd; drives the language servers below.</p>
+ {/if}
+</div>
diff --git a/src/features/cwd-lsp/ui/LspStatusView.svelte b/src/features/cwd-lsp/ui/LspStatusView.svelte
new file mode 100644
index 0000000..c8c9ea8
--- /dev/null
+++ b/src/features/cwd-lsp/ui/LspStatusView.svelte
@@ -0,0 +1,129 @@
+<script lang="ts">
+ import { untrack } from "svelte";
+ import {
+ type Badge,
+ type LoadLspStatus,
+ type LspServerView,
+ summarizeServers,
+ viewLspServers,
+ } from "../logic/view-model";
+
+ let {
+ cwd,
+ canView,
+ load,
+ }: {
+ /** The active conversation's cwd — the trigger to (re)load when it changes. */
+ cwd: string | null;
+ /** Whether a real conversation is focused. */
+ canView: boolean;
+ load: LoadLspStatus;
+ } = $props();
+
+ const badgeClass: Record<Badge, string> = {
+ success: "badge-success",
+ warning: "badge-warning",
+ error: "badge-error",
+ neutral: "badge-ghost",
+ };
+
+ let servers = $state<readonly LspServerView[]>([]);
+ let loading = $state(false);
+ let error = $state<string | null>(null);
+ let loadedCwd = $state<string | null>(null);
+ let hasLoaded = $state(false);
+ let summary = $state("");
+
+ async function refresh() {
+ if (!canView) return;
+ loading = true;
+ error = null;
+ const result = await load();
+ loading = false;
+ if (result === null) return;
+ hasLoaded = true;
+ if (result.ok) {
+ servers = viewLspServers(result.servers);
+ summary = summarizeServers(result.servers);
+ loadedCwd = result.cwd;
+ } else {
+ error = result.error;
+ }
+ }
+
+ // (Re)load on mount and whenever the conversation's cwd changes. The LSP GET
+ // lazily spawns servers, so we avoid a redundant fetch when `cwd` resolves to
+ // the value we already loaded for.
+ $effect(() => {
+ const target = cwd;
+ const can = canView;
+ untrack(() => {
+ if (!can) return;
+ if (!hasLoaded || target !== loadedCwd) void refresh();
+ });
+ });
+</script>
+
+<div class="flex flex-col gap-2">
+ <div class="flex items-center justify-between gap-2">
+ <span class="text-xs opacity-70">
+ {#if loading}
+ Resolving…
+ {:else if hasLoaded && loadedCwd !== null}
+ {summary}
+ {:else}
+ Language servers
+ {/if}
+ </span>
+ <button
+ type="button"
+ class="btn btn-ghost btn-xs"
+ disabled={!canView || loading}
+ onclick={() => refresh()}
+ aria-label="Refresh language server status"
+ >
+ {#if loading}
+ <span class="loading loading-spinner loading-xs"></span>
+ {:else}
+ Refresh
+ {/if}
+ </button>
+ </div>
+
+ {#if !canView}
+ <p class="text-xs opacity-60">Open or start a conversation to see its language servers.</p>
+ {:else if error}
+ <p class="text-xs text-error">{error}</p>
+ {:else if hasLoaded && loadedCwd === null}
+ <p class="text-xs opacity-60">
+ Set a working directory in the Model panel to enable language servers.
+ </p>
+ {:else if hasLoaded && servers.length === 0 && !loading}
+ <p class="text-xs opacity-60">No language servers configured for this directory.</p>
+ {:else}
+ <ul class="flex flex-col gap-2">
+ {#each servers as server (server.id)}
+ <li class="flex flex-col gap-1 rounded-box bg-base-200 p-2 text-sm">
+ <div class="flex items-center justify-between gap-2">
+ <span class="font-medium">{server.name}</span>
+ <span class="badge badge-sm {badgeClass[server.badge]} gap-1">
+ {#if server.busy}
+ <span class="loading loading-spinner loading-xs"></span>
+ {/if}
+ {server.statusLabel}
+ </span>
+ </div>
+ {#if server.extensionsLabel}
+ <span class="font-mono text-xs opacity-60">{server.extensionsLabel}</span>
+ {/if}
+ <span class="truncate font-mono text-xs opacity-50" title={server.root}
+ >{server.root}</span
+ >
+ {#if server.error}
+ <span class="font-mono text-xs text-error">{server.error}</span>
+ {/if}
+ </li>
+ {/each}
+ </ul>
+ {/if}
+</div>
diff --git a/src/features/heartbeat/index.ts b/src/features/heartbeat/index.ts
new file mode 100644
index 0000000..cc438f1
--- /dev/null
+++ b/src/features/heartbeat/index.ts
@@ -0,0 +1,50 @@
+export type {
+ HeartbeatConfig,
+ HeartbeatConfigPatch,
+ HeartbeatConfigResult,
+ HeartbeatNextRunResult,
+ HeartbeatRun,
+ HeartbeatRunStatus,
+ HeartbeatRunsResult,
+ HeartbeatStopResult,
+ LoadHeartbeatConfig,
+ LoadHeartbeatNextRun,
+ LoadHeartbeatRuns,
+ SaveHeartbeatConfig,
+ StopHeartbeatRun,
+} from "./logic/types";
+export type { Badge, HeartbeatFormState, HeartbeatRunView } from "./logic/view-model";
+export {
+ approximateNextRunEpoch,
+ badgeForStatus,
+ DEFAULT_INTERVAL_MINUTES,
+ effectiveSystemPrompt,
+ effortOptions,
+ emptyForm,
+ formatCountdown,
+ formatRunTime,
+ formDiffers,
+ formFromConfig,
+ isInheritingSystemPrompt,
+ joinInterval,
+ nextRunEpoch,
+ normalizeHeartbeatConfig,
+ normalizeHeartbeatRuns,
+ normalizeInterval,
+ patchFromForm,
+ persistedSystemPrompt,
+ relativeLabel,
+ splitInterval,
+ statusLabelFor,
+ viewRun,
+ viewRuns,
+} from "./logic/view-model";
+export { default as HeartbeatView } from "./ui/HeartbeatView.svelte";
+export { default as PromptEditor } from "./ui/PromptEditor.svelte";
+export { default as RunModal } from "./ui/RunModal.svelte";
+
+/** Public module manifest — aggregated by the shell's "Loaded Modules" view. */
+export const manifest = {
+ name: "heartbeat",
+ description: "Workspace autonomous-agent heartbeat: config, run history, live run chat",
+} as const;
diff --git a/src/features/heartbeat/logic/types.ts b/src/features/heartbeat/logic/types.ts
new file mode 100644
index 0000000..3d3d525
--- /dev/null
+++ b/src/features/heartbeat/logic/types.ts
@@ -0,0 +1,103 @@
+import type { ReasoningEffort } from "@dispatch/transport-contract";
+
+/**
+ * Pure core types for the heartbeat feature — zero DOM, zero effects, zero Svelte.
+ *
+ * Heartbeat is a workspace-scoped autonomous agent loop: the backend periodically
+ * runs a turn in a dedicated conversation using a configured system prompt, task
+ * prompt, model, reasoning effort, and interval. The FE exposes the config
+ * (`GET`/`PUT /workspaces/:id/heartbeat`), the run history
+ * (`GET /workspaces/:id/heartbeat/runs`), and a per-run stop
+ * (`POST /workspaces/:id/heartbeat/runs/:runId/stop`).
+ *
+ * The backend's heartbeat API is a plain REST surface — it is NOT part of the
+ * shared `@dispatch/transport-contract` / `@dispatch/wire` packages (verified:
+ * no `heartbeat` symbol in either `dist/`). So, following the consumer-defines-
+ * port pattern (mirrors `features/mcp` / `features/computer` result types), the
+ * FE owns these shapes here and adapts the untyped JSON at the network seam in
+ * the composition root. If the backend later promotes these to a shared contract
+ * package, swap the local types for the imports (see `backend-handoff.md`).
+ */
+
+/** The canonical run lifecycle status (backend-owned enum, verbatim). */
+export type HeartbeatRunStatus = "running" | "completed" | "stopped";
+
+/** The workspace's heartbeat configuration (`GET /workspaces/:id/heartbeat`). */
+export interface HeartbeatConfig {
+ /** Whether the autonomous loop is enabled (running on the interval). */
+ readonly enabled: boolean;
+ readonly systemPrompt: string;
+ readonly taskPrompt: string;
+ /** Minutes between runs. */
+ readonly intervalMinutes: number;
+ /** The model name (`<credential>/<model>`) the heartbeat runs with. */
+ readonly model: string;
+ /**
+ * The heartbeat's reasoning effort, or null when never set (the server
+ * default `"high"` then applies) — mirrors the per-conversation knob's
+ * resolution chain.
+ */
+ readonly reasoningEffort: ReasoningEffort | null;
+}
+
+/**
+ * A partial config patch for `PUT /workspaces/:id/heartbeat`. Every field is
+ * optional — the backend merges the patch onto the stored config.
+ */
+export interface HeartbeatConfigPatch {
+ readonly enabled?: boolean;
+ readonly systemPrompt?: string;
+ readonly taskPrompt?: string;
+ readonly intervalMinutes?: number;
+ readonly model?: string;
+ readonly reasoningEffort?: ReasoningEffort | null;
+}
+
+/** One heartbeat run (`GET /workspaces/:id/heartbeat/runs`). */
+export interface HeartbeatRun {
+ readonly id: string;
+ /** The conversation this run wrote to (watch it live for the chat). */
+ readonly conversationId: string;
+ /** ISO timestamp of when the run was triggered. */
+ readonly triggeredAt: string;
+ readonly status: HeartbeatRunStatus;
+}
+
+// ── Injected ports (consumer-defines-port; the composition root adapts the
+// store's HTTP calls to these shapes). ──────────────────────────────────────
+
+/** Outcome of `GET /workspaces/:id/heartbeat` (or the PUT response). */
+export type HeartbeatConfigResult =
+ | { readonly ok: true; readonly config: HeartbeatConfig }
+ | { readonly ok: false; readonly error: string };
+
+/** Outcome of `GET /workspaces/:id/heartbeat/runs`. */
+export type HeartbeatRunsResult =
+ | { readonly ok: true; readonly runs: readonly HeartbeatRun[] }
+ | { readonly ok: false; readonly error: string };
+
+/** Outcome of `POST /workspaces/:id/heartbeat/runs/:runId/stop`. */
+export type HeartbeatStopResult =
+ | { readonly ok: true }
+ | { readonly ok: false; readonly error: string };
+
+export type LoadHeartbeatConfig = () => Promise<HeartbeatConfigResult | null>;
+export type SaveHeartbeatConfig = (
+ patch: HeartbeatConfigPatch,
+) => Promise<HeartbeatConfigResult | null>;
+export type LoadHeartbeatRuns = () => Promise<HeartbeatRunsResult | null>;
+export type StopHeartbeatRun = (runId: string) => Promise<HeartbeatStopResult | null>;
+
+/**
+ * Outcome of `GET /workspaces/:id/heartbeat/next-run` — the server-authoritative
+ * timestamp of the next scheduled heartbeat run (ISO 8601 string), or `null`
+ * when the heartbeat is disabled or no run is scheduled. The FE computes a live
+ * countdown from this + a 1s clock (see `formatCountdown`). When the endpoint is
+ * unavailable (404 — backend hasn't shipped it yet), the FE falls back to an
+ * approximation from the runs + config (see `approximateNextRunEpoch`).
+ */
+export type HeartbeatNextRunResult =
+ | { readonly ok: true; readonly nextRunAt: string | null }
+ | { readonly ok: false; readonly error: string };
+
+export type LoadHeartbeatNextRun = () => Promise<HeartbeatNextRunResult | null>;
diff --git a/src/features/heartbeat/logic/view-model.test.ts b/src/features/heartbeat/logic/view-model.test.ts
new file mode 100644
index 0000000..aca0aa6
--- /dev/null
+++ b/src/features/heartbeat/logic/view-model.test.ts
@@ -0,0 +1,470 @@
+import type { ReasoningEffort } from "@dispatch/transport-contract";
+import { describe, expect, it } from "vitest";
+import type { HeartbeatConfig, HeartbeatRun } from "./types";
+import {
+ approximateNextRunEpoch,
+ badgeForStatus,
+ DEFAULT_INTERVAL_MINUTES,
+ effectiveSystemPrompt,
+ effortOptions,
+ emptyForm,
+ formatCountdown,
+ formatRunTime,
+ formDiffers,
+ formFromConfig,
+ isInheritingSystemPrompt,
+ joinInterval,
+ nextRunEpoch,
+ normalizeHeartbeatConfig,
+ normalizeHeartbeatRuns,
+ normalizeInterval,
+ patchFromForm,
+ persistedSystemPrompt,
+ relativeLabel,
+ splitInterval,
+ statusLabelFor,
+ viewRun,
+ viewRuns,
+} from "./view-model";
+
+const NOW = Date.UTC(2026, 5, 25, 14, 30, 5); // 2026-06-25T14:30:05Z
+const ISO_AT = "2026-06-25T14:30:05Z"; // exactly NOW
+const run = (over: Partial<HeartbeatRun> = {}): HeartbeatRun => ({
+ id: "run-1",
+ conversationId: "conv-1",
+ triggeredAt: ISO_AT,
+ status: "completed",
+ ...over,
+});
+
+const config = (over: Partial<HeartbeatConfig> = {}): HeartbeatConfig => ({
+ enabled: false,
+ systemPrompt: "be helpful",
+ taskPrompt: "check status",
+ intervalMinutes: 15,
+ model: "openai/gpt-4o",
+ reasoningEffort: null,
+ ...over,
+});
+
+describe("badgeForStatus", () => {
+ it("running → warning + busy (spinner)", () => {
+ expect(badgeForStatus("running")).toEqual({ badge: "warning", busy: true });
+ });
+ it("completed → success, not busy", () => {
+ expect(badgeForStatus("completed")).toEqual({ badge: "success", busy: false });
+ });
+ it("stopped → neutral, not busy", () => {
+ expect(badgeForStatus("stopped")).toEqual({ badge: "neutral", busy: false });
+ });
+});
+
+describe("statusLabelFor", () => {
+ it("maps each status to a display label", () => {
+ expect(statusLabelFor("running")).toBe("Running");
+ expect(statusLabelFor("completed")).toBe("Completed");
+ expect(statusLabelFor("stopped")).toBe("Stopped");
+ });
+});
+
+describe("formatRunTime", () => {
+ it("formats an ISO timestamp as HH:MM:SS (UTC components)", () => {
+ // Uses local getHours/Minutes/Seconds; under UTC env (TZ=UTC) reads 14:30:05.
+ // We assert the SHAPE (3 colon-separated 2-digit groups) so it's TZ-stable.
+ expect(formatRunTime(ISO_AT)).toMatch(/^\d{2}:\d{2}:\d{2}$/);
+ expect(formatRunTime(ISO_AT).split(":")).toHaveLength(3);
+ });
+ it("returns — for an unparseable timestamp", () => {
+ expect(formatRunTime("not-a-date")).toBe("—");
+ expect(formatRunTime("")).toBe("—");
+ });
+});
+
+describe("relativeLabel", () => {
+ it("just now when within a minute", () => {
+ expect(relativeLabel(ISO_AT, NOW)).toBe("just now");
+ expect(relativeLabel(ISO_AT, NOW + 30_000)).toBe("just now");
+ });
+ it("Nm ago under an hour", () => {
+ expect(relativeLabel(ISO_AT, NOW + 5 * 60_000)).toBe("5m ago");
+ expect(relativeLabel(ISO_AT, NOW + 59 * 60_000)).toBe("59m ago");
+ });
+ it("Nh ago under a day", () => {
+ expect(relativeLabel(ISO_AT, NOW + 2 * 3_600_000)).toBe("2h ago");
+ });
+ it("absolute date+time past a day", () => {
+ const label = relativeLabel(ISO_AT, NOW + 26 * 3_600_000);
+ expect(label).toMatch(/^[A-Z][a-z]{2} \d+, \d{2}:\d{2}$/);
+ });
+ it("future timestamp → just now (clock skew tolerance)", () => {
+ expect(relativeLabel(ISO_AT, NOW - 10_000)).toBe("just now");
+ });
+ it("returns — for an unparseable timestamp", () => {
+ expect(relativeLabel("nope", NOW)).toBe("—");
+ });
+});
+
+describe("viewRun / viewRuns", () => {
+ it("running run: warning badge + busy + labels", () => {
+ const v = viewRun(run({ status: "running" }), NOW);
+ expect(v.badge).toBe("warning");
+ expect(v.busy).toBe(true);
+ expect(v.statusLabel).toBe("Running");
+ expect(v.id).toBe("run-1");
+ expect(v.conversationId).toBe("conv-1");
+ expect(v.timeLabel).toMatch(/^\d{2}:\d{2}:\d{2}$/);
+ expect(v.relativeLabel).toBe("just now");
+ });
+ it("completed run: success badge, not busy", () => {
+ expect(viewRun(run({ status: "completed" }), NOW).badge).toBe("success");
+ });
+ it("stopped run: neutral badge, not busy", () => {
+ expect(viewRun(run({ status: "stopped" }), NOW).badge).toBe("neutral");
+ });
+ it("viewRuns preserves order", () => {
+ const views = viewRuns([run({ id: "a" }), run({ id: "b" })], NOW);
+ expect(views.map((v) => v.id)).toEqual(["a", "b"]);
+ });
+});
+
+describe("config form", () => {
+ it("emptyForm has defaults (disabled, default interval split, default effort)", () => {
+ const f = emptyForm();
+ expect(f.enabled).toBe(false);
+ // 30 min → 0h 30m
+ expect(f.intervalHours).toBe(0);
+ expect(f.intervalMinutes).toBe(30);
+ expect(f.reasoningEffort).toBe("high"); // DEFAULT_REASONING_EFFORT
+ expect(f.systemPrompt).toBe("");
+ expect(f.model).toBe("");
+ });
+
+ it("formFromConfig resolves null reasoningEffort to the default", () => {
+ const f = formFromConfig(config({ reasoningEffort: null }));
+ expect(f.reasoningEffort).toBe("high");
+ });
+
+ it("formFromConfig passes through a set reasoningEffort", () => {
+ const f = formFromConfig(config({ reasoningEffort: "max" }));
+ expect(f.reasoningEffort).toBe("max");
+ });
+
+ it("formFromConfig splits intervalMinutes into hours + minutes (0–59)", () => {
+ expect(formFromConfig(config({ intervalMinutes: 90 }))).toMatchObject({
+ intervalHours: 1,
+ intervalMinutes: 30,
+ });
+ expect(formFromConfig(config({ intervalMinutes: 60 }))).toMatchObject({
+ intervalHours: 1,
+ intervalMinutes: 0,
+ });
+ expect(formFromConfig(config({ intervalMinutes: 59 }))).toMatchObject({
+ intervalHours: 0,
+ intervalMinutes: 59,
+ });
+ expect(formFromConfig(config({ intervalMinutes: 1440 }))).toMatchObject({
+ intervalHours: 24,
+ intervalMinutes: 0,
+ });
+ });
+
+ it("formFromConfig coerces malformed fields safely", () => {
+ const f = formFromConfig(
+ config({
+ enabled: "yes" as unknown as boolean,
+ intervalMinutes: -5,
+ model: 42 as unknown as string,
+ systemPrompt: undefined as unknown as string,
+ }),
+ );
+ expect(f.enabled).toBe(false); // non-true → false
+ // -5 clamps to 1 → 0h 1m
+ expect(f.intervalHours).toBe(0);
+ expect(f.intervalMinutes).toBe(1);
+ expect(f.model).toBe(""); // non-string → ""
+ expect(f.systemPrompt).toBe(""); // undefined → ""
+ });
+
+ it("normalizeInterval clamps to 1–1440 and rounds", () => {
+ expect(normalizeInterval(0)).toBe(1);
+ expect(normalizeInterval(-10)).toBe(1);
+ expect(normalizeInterval(1.4)).toBe(1);
+ expect(normalizeInterval(15.6)).toBe(16);
+ expect(normalizeInterval(2000)).toBe(1440);
+ expect(normalizeInterval("30" as unknown as number)).toBe(30); // default on non-number
+ expect(normalizeInterval(undefined)).toBe(DEFAULT_INTERVAL_MINUTES);
+ });
+
+ it("splitInterval / joinInterval round-trip (and clamp)", () => {
+ expect(splitInterval(90)).toEqual({ hours: 1, minutes: 30 });
+ expect(splitInterval(0)).toEqual({ hours: 0, minutes: 1 }); // 0 → clamps to 1
+ expect(splitInterval(1440)).toEqual({ hours: 24, minutes: 0 });
+ expect(splitInterval(2000)).toEqual({ hours: 24, minutes: 0 }); // clamped
+ // join recomputes + clamps
+ expect(joinInterval(1, 30)).toBe(90);
+ expect(joinInterval(0, 0)).toBe(1); // 0 → clamps to 1
+ expect(joinInterval(25, 0)).toBe(1440); // 1500 → clamps to 1440
+ expect(joinInterval(-1, 30)).toBe(30); // negatives floored to 0
+ expect(joinInterval("x" as unknown as number, 15)).toBe(15); // non-finite → 0h
+ });
+
+ it("patchFromForm recombines hours+minutes into intervalMinutes + carries every field", () => {
+ const f = formFromConfig(config({ intervalMinutes: 2000 }));
+ // 2000 clamps to 1440 → 24h 0m in the form
+ expect(f.intervalHours).toBe(24);
+ expect(f.intervalMinutes).toBe(0);
+ const patch = patchFromForm(f);
+ expect(patch.intervalMinutes).toBe(1440);
+ expect(patch.enabled).toBe(false);
+ expect(patch.model).toBe("openai/gpt-4o");
+ expect(patch.reasoningEffort).toBe("high");
+ expect(patch.systemPrompt).toBe("be helpful");
+ expect(patch.taskPrompt).toBe("check status");
+ });
+
+ it("patchFromForm recombines an arbitrary hours/minutes edit", () => {
+ const f = formFromConfig(config({ intervalMinutes: 15 }));
+ f.intervalHours = 2;
+ f.intervalMinutes = 45;
+ expect(patchFromForm(f).intervalMinutes).toBe(165);
+ });
+
+ it("formDiffers is false for a form seeded from the config (no edits)", () => {
+ const c = config({ reasoningEffort: "medium" });
+ const f = formFromConfig(c);
+ expect(formDiffers(f, c)).toBe(false);
+ });
+
+ it("formDiffers is true after an edit", () => {
+ const c = config();
+ const f = formFromConfig(c);
+ f.systemPrompt = "changed";
+ expect(formDiffers(f, c)).toBe(true);
+ });
+
+ it("formDiffers is true after an interval edit (hours or minutes)", () => {
+ const c = config({ intervalMinutes: 90 });
+ const f = formFromConfig(c);
+ f.intervalMinutes = 45; // 1h45m vs 1h30m
+ expect(formDiffers(f, c)).toBe(true);
+ });
+
+ it("formDiffers treats null config effort as the default (matches the resolved form)", () => {
+ const c = config({ reasoningEffort: null });
+ const f = formFromConfig(c);
+ expect(formDiffers(f, c)).toBe(false); // null resolves to "high" == form
+ });
+});
+
+describe("system-prompt inheritance (override ⇄ global default)", () => {
+ const DEFAULT = "You are a helpful assistant.";
+
+ it("effectiveSystemPrompt: override wins when non-empty, else the default", () => {
+ expect(effectiveSystemPrompt("custom", DEFAULT)).toBe("custom");
+ expect(effectiveSystemPrompt("", DEFAULT)).toBe(DEFAULT);
+ });
+
+ it("isInheritingSystemPrompt: true iff the override is empty", () => {
+ expect(isInheritingSystemPrompt("")).toBe(true);
+ expect(isInheritingSystemPrompt("custom")).toBe(false);
+ });
+
+ it('persistedSystemPrompt: empty or matching-the-default → inherit ("")', () => {
+ // matching the default → inherit (never duplicate the default into the config)
+ expect(persistedSystemPrompt(DEFAULT, DEFAULT)).toBe("");
+ // empty edit → inherit
+ expect(persistedSystemPrompt("", DEFAULT)).toBe("");
+ });
+
+ it("persistedSystemPrompt: a distinct edit → the override verbatim", () => {
+ expect(persistedSystemPrompt("custom", DEFAULT)).toBe("custom");
+ expect(persistedSystemPrompt(`${DEFAULT}\nmore`, DEFAULT)).toBe(`${DEFAULT}\nmore`);
+ });
+
+ it("round-trip: inherit → display default → reset (no edit) → persist inherit", () => {
+ // A heartbeat inheriting (override "") displays the default; with no edit,
+ // persisting yields inherit ("") — so the global default stays the source.
+ const override = "";
+ const displayed = effectiveSystemPrompt(override, DEFAULT);
+ expect(displayed).toBe(DEFAULT);
+ expect(persistedSystemPrompt(displayed, DEFAULT)).toBe("");
+ });
+
+ it("round-trip: override → reset to default → persist inherit (clears override)", () => {
+ // User had an override, clicks Reset (textarea ← default): persisting clears
+ // the override ("" → inherit) because the text now matches the default.
+ const afterReset = DEFAULT;
+ expect(persistedSystemPrompt(afterReset, DEFAULT)).toBe("");
+ });
+});
+
+describe("effortOptions re-export", () => {
+ it("exposes the canonical ladder with the default marked", () => {
+ const opts = effortOptions();
+ const values = opts.map((o) => o.value) as readonly string[];
+ expect(values).toEqual(["low", "medium", "high", "xhigh", "max"]);
+ const def = opts.find((o) => o.value === "high");
+ expect(def?.label).toBe("high (default)");
+ });
+});
+
+describe("reasoningEffort type narrowing (sanity)", () => {
+ // Ensures the imported ladder stays the wire's canonical set — if the wire
+ // ladder changes, this test flags the drift alongside the chat feature.
+ it("the five canonical levels", () => {
+ const levels: readonly ReasoningEffort[] = ["low", "medium", "high", "xhigh", "max"];
+ expect(levels).toHaveLength(5);
+ });
+});
+
+describe("normalizeHeartbeatConfig", () => {
+ it("passes through a well-formed config", () => {
+ const c = normalizeHeartbeatConfig({
+ enabled: true,
+ systemPrompt: "sys",
+ taskPrompt: "task",
+ intervalMinutes: 20,
+ model: "openai/gpt-4o",
+ reasoningEffort: "max",
+ });
+ expect(c).toEqual({
+ enabled: true,
+ systemPrompt: "sys",
+ taskPrompt: "task",
+ intervalMinutes: 20,
+ model: "openai/gpt-4o",
+ reasoningEffort: "max",
+ });
+ });
+ it("coerces a malformed body safely (never throws, never undefined)", () => {
+ const c = normalizeHeartbeatConfig({
+ enabled: "yes",
+ intervalMinutes: -3,
+ reasoningEffort: "bogus",
+ });
+ expect(c.enabled).toBe(false);
+ expect(c.intervalMinutes).toBe(1);
+ expect(c.reasoningEffort).toBeNull();
+ expect(c.systemPrompt).toBe("");
+ expect(c.taskPrompt).toBe("");
+ expect(c.model).toBe("");
+ });
+ it("accepts a null reasoningEffort", () => {
+ expect(normalizeHeartbeatConfig({ reasoningEffort: null }).reasoningEffort).toBeNull();
+ });
+ it("handles null / non-object input", () => {
+ const c = normalizeHeartbeatConfig(null);
+ expect(c.enabled).toBe(false);
+ expect(c.intervalMinutes).toBe(DEFAULT_INTERVAL_MINUTES);
+ expect(c.model).toBe("");
+ });
+ it("clamps a huge interval", () => {
+ expect(normalizeHeartbeatConfig({ intervalMinutes: 99999 }).intervalMinutes).toBe(1440);
+ });
+});
+
+describe("normalizeHeartbeatRuns", () => {
+ it("maps a well-formed runs list", () => {
+ const runs = normalizeHeartbeatRuns({
+ runs: [
+ { id: "r1", conversationId: "c1", triggeredAt: "2026-06-25T10:00:00Z", status: "running" },
+ {
+ id: "r2",
+ conversationId: "c2",
+ triggeredAt: "2026-06-25T09:00:00Z",
+ status: "completed",
+ },
+ ],
+ });
+ expect(runs).toHaveLength(2);
+ expect(runs[0]).toMatchObject({ id: "r1", status: "running" });
+ expect(runs[1]).toMatchObject({ id: "r2", status: "completed" });
+ });
+ it("returns [] for malformed body", () => {
+ expect(normalizeHeartbeatRuns(null)).toEqual([]);
+ expect(normalizeHeartbeatRuns({})).toEqual([]);
+ expect(normalizeHeartbeatRuns({ runs: "nope" })).toEqual([]);
+ });
+ it("drops runs missing id/conversationId and defaults unknown status", () => {
+ const runs = normalizeHeartbeatRuns({
+ runs: [
+ { id: "r1", conversationId: "c1", triggeredAt: "x", status: "garbage" },
+ { id: "", conversationId: "c2", triggeredAt: "x", status: "completed" },
+ { id: "r3", conversationId: "", triggeredAt: "x", status: "running" },
+ { id: "r4", conversationId: "c4", triggeredAt: "x", status: "stopped" },
+ ],
+ });
+ expect(runs).toHaveLength(2);
+ expect(runs[0]?.status).toBe("completed"); // "garbage" → default
+ expect(runs[0]?.id).toBe("r1");
+ expect(runs[1]?.id).toBe("r4");
+ });
+});
+
+describe("next-run countdown", () => {
+ const ISO_AT = "2026-06-25T14:05:00Z"; // 5 min past the hour
+
+ describe("nextRunEpoch", () => {
+ it("parses an ISO timestamp to epoch-ms", () => {
+ expect(nextRunEpoch(ISO_AT)).toBe(Date.parse(ISO_AT));
+ });
+ it("returns null for unparseable / empty / non-string", () => {
+ expect(nextRunEpoch("not-a-date")).toBeNull();
+ expect(nextRunEpoch("")).toBeNull();
+ expect(nextRunEpoch(null)).toBeNull();
+ expect(nextRunEpoch(undefined)).toBeNull();
+ });
+ });
+
+ describe("formatCountdown", () => {
+ it("null → —", () => {
+ expect(formatCountdown(null)).toBe("—");
+ });
+ it("≤ 0 → due", () => {
+ expect(formatCountdown(0)).toBe("due");
+ expect(formatCountdown(-5000)).toBe("due");
+ });
+ it("seconds only (< 1m)", () => {
+ expect(formatCountdown(32_000)).toBe("32s");
+ expect(formatCountdown(1_000)).toBe("1s");
+ });
+ it("minutes + seconds (1m–1h)", () => {
+ expect(formatCountdown(4 * 60_000 + 32_000)).toBe("4m 32s");
+ expect(formatCountdown(59 * 60_000 + 5_000)).toBe("59m 05s");
+ });
+ it("hours + minutes (≥ 1h)", () => {
+ expect(formatCountdown(3_600_000 + 5 * 60_000)).toBe("1h 05m");
+ expect(formatCountdown(2 * 3_600_000 + 30 * 60_000)).toBe("2h 30m");
+ });
+ });
+
+ describe("approximateNextRunEpoch", () => {
+ const runs = (times: string[]): HeartbeatRun[] =>
+ times.map((t, i) => ({
+ id: `r${i}`,
+ conversationId: "c",
+ triggeredAt: t,
+ status: "completed",
+ }));
+
+ it("disabled → null", () => {
+ expect(approximateNextRunEpoch(runs([ISO_AT]), 15, false)).toBeNull();
+ });
+ it("no runs → null (no fabricated countdown)", () => {
+ expect(approximateNextRunEpoch([], 15, true)).toBeNull();
+ });
+ it("latest run + interval (minutes)", () => {
+ // latest is the max triggeredAt (runs need not be ordered)
+ const unordered = runs(["2026-06-25T13:00:00Z", "2026-06-25T13:50:00Z"]);
+ // 13:50 + 15 min = 14:05
+ expect(approximateNextRunEpoch(unordered, 15, true)).toBe(Date.parse("2026-06-25T14:05:00Z"));
+ });
+ it("ignores unparseable triggeredAt values", () => {
+ const mixed = runs(["not-a-date", "2026-06-25T13:50:00Z"]);
+ expect(approximateNextRunEpoch(mixed, 15, true)).toBe(Date.parse("2026-06-25T14:05:00Z"));
+ });
+ it("all-unparseable → null", () => {
+ expect(approximateNextRunEpoch(runs(["nope", "also-nope"]), 15, true)).toBeNull();
+ });
+ });
+});
diff --git a/src/features/heartbeat/logic/view-model.ts b/src/features/heartbeat/logic/view-model.ts
new file mode 100644
index 0000000..e91febd
--- /dev/null
+++ b/src/features/heartbeat/logic/view-model.ts
@@ -0,0 +1,410 @@
+import type { ReasoningEffort } from "@dispatch/transport-contract";
+import {
+ DEFAULT_REASONING_EFFORT,
+ effectiveEffort,
+ effortOptions,
+} from "../../chat/reasoning-effort";
+import type {
+ HeartbeatConfig,
+ HeartbeatConfigPatch,
+ HeartbeatRun,
+ HeartbeatRunStatus,
+} from "./types";
+
+/**
+ * Pure view-models for the heartbeat feature — zero DOM, zero effects, zero
+ * Svelte. Maps backend `HeartbeatConfig`/`HeartbeatRun` to display shapes
+ * (badges, labels, formatted times) and holds the config-form helpers.
+ *
+ * The reasoning-effort ladder + resolution are SERVER-owned and shared with the
+ * per-conversation knob, so they are REUSED from `features/chat/reasoning-effort`
+ * (a sanctioned cross-feature import through its public exports) rather than
+ * redefined — no drift.
+ */
+
+export type Badge = "success" | "warning" | "error" | "neutral";
+
+/** A run shaped for display in the scrolling runs list. */
+export interface HeartbeatRunView {
+ readonly id: string;
+ readonly conversationId: string;
+ readonly status: HeartbeatRunStatus;
+ readonly statusLabel: string;
+ readonly badge: Badge;
+ /** True while the run is in flight (show a spinner). */
+ readonly busy: boolean;
+ /** A short absolute clock label, e.g. "14:30:05". */
+ readonly timeLabel: string;
+ /** A relative label, e.g. "5m ago" / "just now". */
+ readonly relativeLabel: string;
+}
+
+const RUNNING_LABEL = "Running";
+const COMPLETED_LABEL = "Completed";
+const STOPPED_LABEL = "Stopped";
+
+/**
+ * Map a run's status to a display badge + busy flag. `running` → warning +
+ * spinner, `completed` → success, `stopped` → neutral. Mirrors the LSP/MCP
+ * status visual treatment.
+ */
+export function badgeForStatus(status: HeartbeatRunStatus): { badge: Badge; busy: boolean } {
+ switch (status) {
+ case "running":
+ return { badge: "warning", busy: true };
+ case "completed":
+ return { badge: "success", busy: false };
+ case "stopped":
+ return { badge: "neutral", busy: false };
+ }
+}
+
+export function statusLabelFor(status: HeartbeatRunStatus): string {
+ switch (status) {
+ case "running":
+ return RUNNING_LABEL;
+ case "completed":
+ return COMPLETED_LABEL;
+ case "stopped":
+ return STOPPED_LABEL;
+ }
+}
+
+/**
+ * Format an ISO timestamp as a short absolute clock label (HH:MM:SS) in the
+ * viewer's locale. Returns "—" for an unparseable timestamp so the UI never
+ * crashes on a malformed backend value. Pure (no `now` needed — an absolute
+ * clock label doesn't depend on the current time).
+ */
+export function formatRunTime(triggeredAt: string): string {
+ const t = parseTime(triggeredAt);
+ if (t === null) return "—";
+ return clockLabel(t);
+}
+
+/**
+ * A coarse relative label — "just now" (<1m), "Nm ago", "Nh ago", else the
+ * absolute date+time (so an old run reads "Jun 24, 14:30"). Pure via `now`.
+ */
+export function relativeLabel(triggeredAt: string, now: number = Date.now()): string {
+ const t = parseTime(triggeredAt);
+ if (t === null) return "—";
+ const deltaMs = now - t;
+ if (deltaMs < 0) return "just now";
+ const mins = Math.floor(deltaMs / 60000);
+ if (mins < 1) return "just now";
+ if (mins < 60) return `${mins}m ago`;
+ const hours = Math.floor(mins / 60);
+ if (hours < 24) return `${hours}h ago`;
+ return dateLabel(t);
+}
+
+/**
+ * Build a display view for a run. `now` is injectable for tests (defaults to
+ * `Date.now()`); the composition-root component passes nothing in production.
+ */
+export function viewRun(run: HeartbeatRun, now: number = Date.now()): HeartbeatRunView {
+ const { badge, busy } = badgeForStatus(run.status);
+ return {
+ id: run.id,
+ conversationId: run.conversationId,
+ status: run.status,
+ statusLabel: statusLabelFor(run.status),
+ badge,
+ busy,
+ timeLabel: formatRunTime(run.triggeredAt),
+ relativeLabel: relativeLabel(run.triggeredAt, now),
+ };
+}
+
+export function viewRuns(
+ runs: readonly HeartbeatRun[],
+ now: number = Date.now(),
+): readonly HeartbeatRunView[] {
+ return runs.map((r) => viewRun(r, now));
+}
+
+// ── Time formatting (pure: no `Date` mutation; injectable `now` for tests) ─────
+
+/** Parse an ISO timestamp to epoch ms, or null if unparseable. */
+function parseTime(iso: string): number | null {
+ if (typeof iso !== "string" || iso.length === 0) return null;
+ const t = Date.parse(iso);
+ return Number.isNaN(t) ? null : t;
+}
+
+/** `HH:MM:SS` in the viewer's locale (24h where the locale uses it). */
+function clockLabel(epochMs: number): string {
+ const d = new Date(epochMs);
+ const hh = String(d.getHours()).padStart(2, "0");
+ const mm = String(d.getMinutes()).padStart(2, "0");
+ const ss = String(d.getSeconds()).padStart(2, "0");
+ return `${hh}:${mm}:${ss}`;
+}
+
+/** A short absolute date+time label for an old run, e.g. "Jun 24, 14:30". */
+function dateLabel(epochMs: number): string {
+ const d = new Date(epochMs);
+ const month = d.toLocaleString(undefined, { month: "short" });
+ const day = d.getDate();
+ const hh = String(d.getHours()).padStart(2, "0");
+ const mm = String(d.getMinutes()).padStart(2, "0");
+ return `${month} ${day}, ${hh}:${mm}`;
+}
+
+// ── Next-run countdown (timer of when the next heartbeat fires) ───────────────
+//
+// The authoritative next-run time comes from the backend
+// (`GET /workspaces/:id/heartbeat/next-run` → `nextRunAt` ISO string); the FE
+// computes a live countdown from it + a 1s clock. When that endpoint is absent,
+// the FE falls back to an approximation (`approximateNextRunEpoch`) from the
+// latest run + the configured interval.
+
+/** Parse an ISO timestamp to epoch-ms, or null if unparseable. */
+export function nextRunEpoch(iso: string | null | undefined): number | null {
+ if (typeof iso !== "string" || iso.length === 0) return null;
+ const t = Date.parse(iso);
+ return Number.isNaN(t) ? null : t;
+}
+
+/**
+ * Format a remaining-ms delta as a short countdown: "4m 32s", "32s", "1h 05m",
+ * "due" (≤ 0), or "—" (unknown/null). Pure via the injected `remainingMs`.
+ */
+export function formatCountdown(remainingMs: number | null): string {
+ if (remainingMs === null) return "—";
+ if (remainingMs <= 0) return "due";
+ const totalSec = Math.floor(remainingMs / 1000);
+ const hours = Math.floor(totalSec / 3600);
+ const mins = Math.floor((totalSec % 3600) / 60);
+ const secs = totalSec % 60;
+ if (hours > 0) return `${hours}h ${String(mins).padStart(2, "0")}m`;
+ if (mins > 0) return `${mins}m ${String(secs).padStart(2, "0")}s`;
+ return `${secs}s`;
+}
+
+/**
+ * Approximate the next-run epoch-ms when the backend's `next-run` endpoint is
+ * unavailable: the LATEST run's `triggeredAt` + `intervalMinutes` (only when the
+ * heartbeat is enabled AND at least one run exists). Returns null otherwise (the
+ * FE then shows no countdown — never a fabricated one). The latest run is the
+ * max `triggeredAt` (runs need not be ordered). Pure (no `now` needed — the next
+ * run is latest + interval, independent of the current time).
+ */
+export function approximateNextRunEpoch(
+ runs: readonly HeartbeatRun[],
+ intervalMinutes: number,
+ enabled: boolean,
+): number | null {
+ if (!enabled) return null;
+ let latest: number | null = null;
+ for (const r of runs) {
+ const t = Date.parse(r.triggeredAt);
+ if (!Number.isNaN(t) && (latest === null || t > latest)) latest = t;
+ }
+ if (latest === null) return null;
+ return latest + intervalMinutes * 60_000;
+}
+
+// ── Config form ───────────────────────────────────────────────────────────────
+
+/**
+ * The editable form state for the config panel — a mutable mirror of a loaded
+ * `HeartbeatConfig` that the inputs bind to. `reasoningEffort` is resolved to
+ * an effective level for the `<select>` (null ⇒ default `high`), exactly like
+ * the per-conversation selector.
+ *
+ * The interval is split into `intervalHours` + `intervalMinutes` (0–59) for the
+ * UI (two inputs), and recombined to a total-minutes value at the patch seam
+ * (`patchFromForm`); the backend stores a single `intervalMinutes`.
+ */
+export interface HeartbeatFormState {
+ enabled: boolean;
+ systemPrompt: string;
+ taskPrompt: string;
+ intervalHours: number;
+ intervalMinutes: number;
+ model: string;
+ reasoningEffort: ReasoningEffort;
+}
+
+/** The default interval (minutes) shown for an empty/unset config. */
+export const DEFAULT_INTERVAL_MINUTES = 30;
+
+/** Split a total-minutes value into { hours, minutes (0–59) }. Pure. */
+export function splitInterval(totalMinutes: number): { hours: number; minutes: number } {
+ const total = normalizeInterval(totalMinutes);
+ const hours = Math.floor(total / 60);
+ const minutes = total - hours * 60;
+ return { hours, minutes };
+}
+
+/** Recombine hours + minutes into a clamped total-minutes value. Pure. */
+export function joinInterval(hours: number, minutes: number): number {
+ const h = Number.isFinite(hours) ? Math.max(0, Math.floor(hours)) : 0;
+ const m = Number.isFinite(minutes) ? Math.max(0, Math.floor(minutes)) : 0;
+ return normalizeInterval(h * 60 + m);
+}
+
+/**
+ * Seed the editable form state from a loaded config, applying safe defaults for
+ * any malformed/absent backend field so the inputs are never `undefined`.
+ */
+export function formFromConfig(config: HeartbeatConfig): HeartbeatFormState {
+ const { hours, minutes } = splitInterval(config.intervalMinutes);
+ return {
+ enabled: config.enabled === true,
+ systemPrompt: config.systemPrompt ?? "",
+ taskPrompt: config.taskPrompt ?? "",
+ intervalHours: hours,
+ intervalMinutes: minutes,
+ model: typeof config.model === "string" ? config.model : "",
+ reasoningEffort: effectiveEffort(config.reasoningEffort ?? null),
+ };
+}
+
+/** An empty form (before the config loads). */
+export function emptyForm(): HeartbeatFormState {
+ const { hours, minutes } = splitInterval(DEFAULT_INTERVAL_MINUTES);
+ return {
+ enabled: false,
+ systemPrompt: "",
+ taskPrompt: "",
+ intervalHours: hours,
+ intervalMinutes: minutes,
+ model: "",
+ reasoningEffort: DEFAULT_REASONING_EFFORT,
+ };
+}
+
+/** Clamp a raw interval to a sane positive-minute range (1–1440 = 1 min–24 h). */
+export function normalizeInterval(value: unknown): number {
+ const n = typeof value === "number" && Number.isFinite(value) ? value : DEFAULT_INTERVAL_MINUTES;
+ const int = Math.round(n);
+ if (int < 1) return 1;
+ if (int > 1440) return 1440;
+ return int;
+}
+
+/**
+ * The patch to PUT when persisting the form. The split hours+minutes are
+ * recombined into a single `intervalMinutes` (clamped); text fields are sent
+ * verbatim. `reasoningEffort` is always present (a resolved level) since the
+ * heartbeat has no per-run override — it persists the level.
+ */
+export function patchFromForm(form: HeartbeatFormState): HeartbeatConfigPatch {
+ return {
+ enabled: form.enabled,
+ systemPrompt: form.systemPrompt,
+ taskPrompt: form.taskPrompt,
+ intervalMinutes: joinInterval(form.intervalHours, form.intervalMinutes),
+ model: form.model,
+ reasoningEffort: form.reasoningEffort,
+ };
+}
+
+/** Whether the form differs from the loaded config (drives the Save button). */
+export function formDiffers(form: HeartbeatFormState, config: HeartbeatConfig): boolean {
+ const { hours, minutes } = splitInterval(config.intervalMinutes);
+ return (
+ form.enabled !== config.enabled ||
+ form.systemPrompt !== (config.systemPrompt ?? "") ||
+ form.taskPrompt !== (config.taskPrompt ?? "") ||
+ form.intervalHours !== hours ||
+ form.intervalMinutes !== minutes ||
+ form.model !== (typeof config.model === "string" ? config.model : "") ||
+ form.reasoningEffort !== effectiveEffort(config.reasoningEffort ?? null)
+ );
+}
+
+// ── System-prompt inheritance (heartbeat override ⇄ global default) ────────────
+//
+// The heartbeat's `systemPrompt` is an OVERRIDE of the global system prompt (the
+// one every workspace conversation uses — there is no per-workspace system
+// prompt; `GET /system-prompt` is global). An EMPTY override means "inherit the
+// global default" (server-owned resolution: the backend resolves empty → global
+// at run time; see CR-HB-2). These pure helpers keep the override/inherit
+// semantics in ONE place so the editor + form agree.
+
+/**
+ * The prompt to DISPLAY: the heartbeat's override if it set one, else the global
+ * default. The editor pre-fills the textarea with this so the user can see (and
+ * tweak) what will run — but a pre-filled default is NOT an explicit edit.
+ */
+export function effectiveSystemPrompt(override: string, defaultPrompt: string): string {
+ return override !== "" ? override : defaultPrompt;
+}
+
+/** Whether the heartbeat is inheriting the global default (empty override). */
+export function isInheritingSystemPrompt(override: string): boolean {
+ return override === "";
+}
+
+/**
+ * The `systemPrompt` value to PERSIST for the given editable text: if the user's
+ * text matches the global default (or is empty), persist `""` to INHERIT (so a
+ * later change to the global default still flows through); otherwise persist the
+ * text verbatim as an override. This keeps "matching the default = inheriting it"
+ * — never duplicating the default into the heartbeat config.
+ */
+export function persistedSystemPrompt(editable: string, defaultPrompt: string): string {
+ if (editable === "" || editable === defaultPrompt) return "";
+ return editable;
+}
+
+// The reasoning-effort `<option>`s are reused verbatim from the per-conversation
+// selector (re-exported so the config panel imports a single source).
+export { effortOptions };
+
+// ── Network-seam normalization (pure; called by the composition root) ────────
+//
+// The heartbeat API is untyped JSON (not a transport-contract type), so the
+// store coerces each response defensively HERE (pure + tested) — a malformed/
+// partial backend value can never crash the renderer. Mirrors the inline
+// `Array.isArray(data.servers) ? … : []` guard the store does for LSP/MCP.
+
+/** Narrow an untrusted string to the run-status enum, defaulting to "completed". */
+function asRunStatus(value: unknown): HeartbeatRunStatus {
+ if (value === "running" || value === "completed" || value === "stopped") return value;
+ return "completed";
+}
+
+/** Coerce an untrusted `GET .../heartbeat/runs` body into a typed run list. */
+export function normalizeHeartbeatRuns(data: unknown): readonly HeartbeatRun[] {
+ if (!isRecord(data) || !Array.isArray(data.runs)) return [];
+ const runs = data.runs as readonly unknown[];
+ return runs
+ .filter((r): r is Record<string, unknown> => r !== null && typeof r === "object")
+ .map((r) => ({
+ id: typeof r.id === "string" ? r.id : "",
+ conversationId: typeof r.conversationId === "string" ? r.conversationId : "",
+ triggeredAt: typeof r.triggeredAt === "string" ? r.triggeredAt : "",
+ status: asRunStatus(r.status),
+ }))
+ .filter((r) => r.id !== "" && r.conversationId !== "");
+}
+
+/** Coerce an untrusted `GET`/`PUT .../heartbeat` body into a typed config. */
+export function normalizeHeartbeatConfig(data: unknown): HeartbeatConfig {
+ const d = isRecord(data) ? data : {};
+ const effort = d.reasoningEffort;
+ return {
+ enabled: d.enabled === true,
+ systemPrompt: typeof d.systemPrompt === "string" ? d.systemPrompt : "",
+ taskPrompt: typeof d.taskPrompt === "string" ? d.taskPrompt : "",
+ intervalMinutes: normalizeInterval(d.intervalMinutes),
+ model: typeof d.model === "string" ? d.model : "",
+ reasoningEffort:
+ effort === "low" ||
+ effort === "medium" ||
+ effort === "high" ||
+ effort === "xhigh" ||
+ effort === "max"
+ ? effort
+ : null,
+ };
+}
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+ return value !== null && typeof value === "object";
+}
diff --git a/src/features/heartbeat/ui/HeartbeatView.svelte b/src/features/heartbeat/ui/HeartbeatView.svelte
new file mode 100644
index 0000000..5f262f8
--- /dev/null
+++ b/src/features/heartbeat/ui/HeartbeatView.svelte
@@ -0,0 +1,536 @@
+<script lang="ts">
+ import { untrack } from "svelte";
+ import type { ReasoningEffort } from "@dispatch/transport-contract";
+ import { isReasoningEffort } from "../../chat/reasoning-effort";
+ import {
+ approximateNextRunEpoch,
+ badgeForStatus,
+ type Badge,
+ emptyForm,
+ effortOptions,
+ formatCountdown,
+ formDiffers,
+ formFromConfig,
+ joinInterval,
+ nextRunEpoch,
+ patchFromForm,
+ viewRuns,
+ type HeartbeatFormState,
+ type HeartbeatRunView,
+ } from "../logic/view-model";
+ import type {
+ HeartbeatRun,
+ LoadHeartbeatConfig,
+ LoadHeartbeatNextRun,
+ LoadHeartbeatRuns,
+ SaveHeartbeatConfig,
+ StopHeartbeatRun,
+ } from "../logic/types";
+ import type {
+ LoadSystemPrompt,
+ LoadSystemPromptVariables,
+ } from "../../system-prompt";
+ import PromptEditor from "./PromptEditor.svelte";
+
+ let {
+ models,
+ loadConfig,
+ saveConfig,
+ loadRuns,
+ stopRun,
+ loadVariables,
+ loadDefaultPrompt,
+ loadNextRun,
+ onOpenRun,
+ }: {
+ /** The available model names (for the config's model dropdown). */
+ models: readonly string[];
+ loadConfig: LoadHeartbeatConfig;
+ saveConfig: SaveHeartbeatConfig;
+ loadRuns: LoadHeartbeatRuns;
+ stopRun: StopHeartbeatRun;
+ /** Load the available system-prompt variables (palette in the prompt editor). */
+ loadVariables: LoadSystemPromptVariables;
+ /** Load the global system prompt — the default the heartbeat inherits when
+ * its `systemPrompt` is empty (the workspace's regular prompt). */
+ loadDefaultPrompt: LoadSystemPrompt;
+ /** Load the server-authoritative next-run timestamp (the countdown source). */
+ loadNextRun: LoadHeartbeatNextRun;
+ /** Open a run's chat in the fullscreen modal (composition-root wires the live watch). */
+ onOpenRun: (run: HeartbeatRunView) => void;
+ } = $props();
+
+ const badgeClass: Record<Badge, string> = {
+ success: "badge-success",
+ warning: "badge-warning",
+ error: "badge-error",
+ neutral: "badge-ghost",
+ };
+
+ const effortOpts = effortOptions();
+
+ // ── Config form ──────────────────────────────────────────────────────────
+ let form = $state<HeartbeatFormState>(emptyForm());
+ /** The last successfully loaded/saved config, to diff the form against. */
+ let loadedConfig = $state<HeartbeatFormState>(emptyForm());
+ let configLoading = $state(false);
+ let configError = $state<string | null>(null);
+ let saving = $state(false);
+ let saveError = $state<string | null>(null);
+ let justSaved = $state(false);
+ let hasConfig = $state(false);
+ let promptEditorOpen = $state(false);
+
+ const hasChanges = $derived(formDiffers(form, loadedConfig) && hasConfig);
+
+ async function refreshConfig(): Promise<void> {
+ configLoading = true;
+ configError = null;
+ const result = await loadConfig();
+ configLoading = false;
+ if (result === null) return;
+ if (result.ok) {
+ hasConfig = true;
+ form = formFromConfig(result.config);
+ loadedConfig = formFromConfig(result.config);
+ saveError = null;
+ } else {
+ configError = result.error;
+ }
+ }
+
+ async function handleSave(): Promise<void> {
+ if (saving || !hasChanges) return;
+ saving = true;
+ saveError = null;
+ justSaved = false;
+ const result = await saveConfig(patchFromForm(form));
+ saving = false;
+ if (result === null) return;
+ if (result.ok) {
+ // Re-seed from the authoritative response so the form tracks the server.
+ form = formFromConfig(result.config);
+ loadedConfig = formFromConfig(result.config);
+ justSaved = true;
+ } else {
+ saveError = result.error;
+ }
+ }
+
+ // The enable toggle is the primary action — persist it immediately (don't
+ // require a separate Save). Mirrors the codebase's save-on-change controls.
+ async function handleToggleEnabled(): Promise<void> {
+ if (saving) return;
+ const next = !form.enabled;
+ form = { ...form, enabled: next };
+ saving = true;
+ saveError = null;
+ justSaved = false;
+ const result = await saveConfig({ enabled: next });
+ saving = false;
+ if (result === null) return;
+ if (result.ok) {
+ form = formFromConfig(result.config);
+ loadedConfig = formFromConfig(result.config);
+ justSaved = true;
+ } else {
+ saveError = result.error;
+ // Revert the toggle to the last-known state.
+ form = { ...form, enabled: loadedConfig.enabled };
+ }
+ }
+
+ // ── Runs list (polls while mounted) ───────────────────────────────────────
+ let runs = $state<readonly HeartbeatRunView[]>([]);
+ /** The raw backend runs (carry `triggeredAt`), kept for the next-run
+ * approximation fallback (the view drops `triggeredAt` for display labels). */
+ let rawRuns = $state<readonly HeartbeatRun[]>([]);
+ /** True after the first successful load (gates the "No runs yet" empty state
+ * WITHOUT flashing it before the initial fetch resolves). The per-poll
+ * loading is intentionally INVISIBLE — it's near-instant and a visible
+ * loading indicator caused the sidebar to flicker every poll (height shift). */
+ let hasLoadedRuns = $state(false);
+ let runsError = $state<string | null>(null);
+ let stoppingId = $state<string | null>(null);
+ let stopError = $state<string | null>(null);
+ let pollHandle: ReturnType<typeof setInterval> | null = null;
+ /** Re-entrancy guard for background polling (no UI — prevents overlapping fetches). */
+ let refreshInFlight = false;
+
+ // ── Next-run countdown ───────────────────────────────────────────────────
+ /** Epoch-ms of the next scheduled run, or null (no countdown shown). Sourced
+ * from the backend's `next-run` endpoint; falls back to an approximation
+ * (latest run + interval) when the endpoint is unavailable (404 — pre-CR-HB-3). */
+ let nextRunAt = $state<number | null>(null);
+ /** Once the next-run endpoint fails (404), stop polling it (avoid 404 spam) and
+ * rely on the approximation. Reset only on remount. */
+ let nextRunEndpointFailed = $state(false);
+
+ async function refreshNextRun(): Promise<void> {
+ if (nextRunEndpointFailed) return;
+ const result = await loadNextRun();
+ if (result === null) return;
+ if (result.ok) {
+ nextRunAt = nextRunEpoch(result.nextRunAt);
+ } else {
+ // Endpoint absent / errored → stop polling it + use the approximation.
+ nextRunEndpointFailed = true;
+ }
+ }
+
+ /** The fallback countdown source: latest run + interval (only when enabled +
+ * ≥1 run). Recomputed reactively from the loaded config + raw runs. */
+ const approxNextRun = $derived(
+ approximateNextRunEpoch(
+ rawRuns,
+ joinInterval(loadedConfig.intervalHours, loadedConfig.intervalMinutes),
+ loadedConfig.enabled,
+ ),
+ );
+ /** The effective next-run epoch: the server value if available, else the
+ * approximation. Drives the countdown. */
+ const effectiveNextRun = $derived(nextRunEndpointFailed ? approxNextRun : nextRunAt);
+
+ const RUN_POLL_MS = 4000;
+
+ async function refreshRuns(): Promise<void> {
+ if (refreshInFlight) return;
+ refreshInFlight = true;
+ const result = await loadRuns();
+ refreshInFlight = false;
+ if (result === null) return;
+ if (result.ok) {
+ rawRuns = result.runs;
+ runs = viewRuns(result.runs);
+ // Clear the error only on success so it stays visible (stable, no
+ // flicker) during an in-flight retry rather than vanishing mid-poll.
+ runsError = null;
+ hasLoadedRuns = true;
+ } else {
+ runsError = result.error;
+ }
+ }
+
+ async function handleStop(runId: string): Promise<void> {
+ if (stoppingId !== null) return;
+ stoppingId = runId;
+ stopError = null;
+ const result = await stopRun(runId);
+ stoppingId = null;
+ if (result === null) return;
+ if (result.ok) {
+ await refreshRuns();
+ } else {
+ stopError = result.error;
+ }
+ }
+
+ // Load config + runs + next-run on mount, and poll them while the view is
+ // alive so a running run's completion/stopped transition + the next-run timer
+ // stay fresh without a manual refresh.
+ $effect(() => {
+ untrack(() => {
+ void refreshConfig();
+ void refreshRuns();
+ void refreshNextRun();
+ });
+ pollHandle = setInterval(() => {
+ void refreshRuns();
+ void refreshNextRun();
+ }, RUN_POLL_MS);
+ return () => {
+ if (pollHandle !== null) clearInterval(pollHandle);
+ pollHandle = null;
+ };
+ });
+
+ // A relative label ("5m ago") drifts as time passes; re-derive runs every
+ // minute so the list stays fresh without a full re-fetch.
+ let tick = $state(0);
+ $effect(() => {
+ const h = setInterval(() => {
+ tick++;
+ }, 60000);
+ return () => clearInterval(h);
+ });
+ const runsView = $derived.by(() => {
+ void tick; // depend on the ticker
+ return runs;
+ });
+
+ // The countdown clock: ticks every second so the "next run in Xm Ys" stays
+ // live. Pure countdown math is in `formatCountdown` (view-model); this only
+ // advances `now`.
+ let now = $state(Date.now());
+ $effect(() => {
+ const h = setInterval(() => {
+ now = Date.now();
+ }, 1000);
+ return () => clearInterval(h);
+ });
+ const countdownMs = $derived(
+ effectiveNextRun !== null ? effectiveNextRun - now : null,
+ );
+ const countdownLabel = $derived(formatCountdown(countdownMs));
+</script>
+
+<div class="flex flex-col gap-3">
+ <!-- Enable / status header -->
+ <section class="flex flex-col gap-1">
+ <div class="flex items-center justify-between gap-2">
+ <div class="flex items-center gap-2">
+ <button
+ type="button"
+ role="switch"
+ aria-checked={form.enabled}
+ aria-label="Toggle heartbeat"
+ class="toggle toggle-sm"
+ class:toggle-primary={form.enabled}
+ disabled={saving || configLoading}
+ onclick={handleToggleEnabled}
+ ></button>
+ <span class="text-xs font-semibold uppercase opacity-60">
+ {#if configLoading}
+ Loading…
+ {:else if form.enabled}
+ Enabled
+ {:else}
+ Disabled
+ {/if}
+ </span>
+ </div>
+ <button
+ type="button"
+ class="btn btn-ghost btn-xs"
+ disabled={configLoading}
+ onclick={() => refreshConfig()}
+ aria-label="Refresh heartbeat config"
+ >
+ {#if configLoading}
+ <span class="loading loading-spinner loading-xs"></span>
+ {:else}
+ Refresh
+ {/if}
+ </button>
+ </div>
+ {#if form.enabled && effectiveNextRun !== null}
+ <p class="text-xs opacity-60" title="When the next heartbeat run fires">
+ Next run in {countdownLabel}
+ </p>
+ {/if}
+ </section>
+
+ {#if configError}
+ <p class="text-xs text-error">{configError}</p>
+ {:else}
+ <!-- Prompts (open the full-page editor) -->
+ <section class="flex flex-col gap-1">
+ <span class="text-xs font-semibold uppercase opacity-60">Prompts</span>
+ <button
+ type="button"
+ class="btn btn-sm btn-outline"
+ disabled={saving || configLoading}
+ onclick={() => (promptEditorOpen = true)}
+ >
+ Edit prompts
+ </button>
+ <p class="text-xs opacity-50">
+ Open the editor for the system + task prompts (with a variable palette).
+ </p>
+ </section>
+
+ <!-- Model + reasoning effort -->
+ <section class="flex flex-col gap-2">
+ <div class="flex flex-col gap-1">
+ <span class="text-xs font-semibold uppercase opacity-60">Model</span>
+ <select
+ class="select select-sm w-full"
+ value={form.model}
+ disabled={saving || configLoading}
+ onchange={(e) => (form = { ...form, model: e.currentTarget.value })}
+ aria-label="Heartbeat model"
+ >
+ {#if models.length === 0}
+ <option value="">No models available</option>
+ {:else}
+ <option value="" disabled>Select a model</option>
+ {#each models as model (model)}
+ <option value={model}>{model}</option>
+ {/each}
+ {/if}
+ </select>
+ </div>
+
+ <div class="flex flex-col gap-1">
+ <span class="text-xs font-semibold uppercase opacity-60">Reasoning effort</span>
+ <select
+ class="select select-sm w-full"
+ value={form.reasoningEffort}
+ disabled={saving || configLoading}
+ onchange={(e) => {
+ const v = e.currentTarget.value;
+ if (isReasoningEffort(v)) form = { ...form, reasoningEffort: v as ReasoningEffort };
+ }}
+ aria-label="Heartbeat reasoning effort"
+ >
+ {#each effortOpts as option (option.value)}
+ <option value={option.value}>{option.label}</option>
+ {/each}
+ </select>
+ </div>
+ </section>
+
+ <!-- Interval (hours + minutes) -->
+ <section class="flex flex-col gap-1">
+ <span class="text-xs font-semibold uppercase opacity-60">Interval</span>
+ <div class="flex items-center gap-2">
+ <input
+ type="number"
+ class="input input-bordered input-sm w-20"
+ min="0"
+ max="24"
+ value={form.intervalHours}
+ disabled={saving || configLoading}
+ oninput={(e) => {
+ const n = Number.parseInt(e.currentTarget.value, 10);
+ form = { ...form, intervalHours: Number.isNaN(n) ? 0 : n };
+ }}
+ onchange={(e) => {
+ const clamped = Math.max(0, Math.min(24, form.intervalHours));
+ form = { ...form, intervalHours: clamped };
+ e.currentTarget.value = String(clamped);
+ }}
+ aria-label="Heartbeat interval hours"
+ />
+ <span class="text-xs opacity-60">h</span>
+ <input
+ type="number"
+ class="input input-bordered input-sm w-20"
+ min="0"
+ max="59"
+ value={form.intervalMinutes}
+ disabled={saving || configLoading}
+ oninput={(e) => {
+ const n = Number.parseInt(e.currentTarget.value, 10);
+ form = { ...form, intervalMinutes: Number.isNaN(n) ? 0 : n };
+ }}
+ onchange={(e) => {
+ const clamped = Math.max(0, Math.min(59, form.intervalMinutes));
+ form = { ...form, intervalMinutes: clamped };
+ e.currentTarget.value = String(clamped);
+ }}
+ aria-label="Heartbeat interval minutes"
+ />
+ <span class="text-xs opacity-60">m between runs</span>
+ </div>
+ </section>
+
+ <!-- Save -->
+ <section class="flex flex-col gap-1">
+ <button
+ type="button"
+ class="btn btn-sm btn-primary"
+ disabled={!hasChanges || saving || configLoading}
+ onclick={handleSave}
+ >
+ {#if saving}
+ <span class="loading loading-spinner loading-xs"></span>
+ Saving…
+ {:else}
+ Save config
+ {/if}
+ </button>
+ {#if saveError}
+ <p class="text-xs text-error">{saveError}</p>
+ {:else if justSaved}
+ <p class="text-xs text-success">Saved.</p>
+ {/if}
+ </section>
+ {/if}
+
+ <!-- Runs list -->
+ <section class="flex flex-col gap-1">
+ <div class="flex items-center justify-between gap-2">
+ <span class="text-xs font-semibold uppercase opacity-60">Runs</span>
+ <button
+ type="button"
+ class="btn btn-ghost btn-xs"
+ onclick={() => refreshRuns()}
+ aria-label="Refresh heartbeat runs"
+ >
+ Refresh
+ </button>
+ </div>
+
+ {#if runsError}
+ <p class="text-xs text-error">{runsError}</p>
+ {:else if runs.length > 0}
+ <ul class="flex max-h-72 flex-col gap-1 overflow-y-auto">
+ {#each runsView as run (run.id)}
+ <li>
+ <button
+ type="button"
+ class="flex w-full items-center justify-between gap-2 rounded-box bg-base-200 p-2 text-left hover:bg-base-300"
+ onclick={() => onOpenRun(run)}
+ aria-label="Open heartbeat run {run.id} chat"
+ >
+ <span class="flex min-w-0 flex-col gap-0.5">
+ <span class="truncate font-mono text-xs opacity-70">{run.id}</span>
+ <span class="text-xs opacity-60">
+ {run.relativeLabel} · {run.timeLabel}
+ </span>
+ </span>
+ <span class="flex items-center gap-1">
+ {#if run.busy}
+ <span class="loading loading-spinner loading-xs"></span>
+ {/if}
+ <span class="badge badge-sm {badgeClass[run.badge]}">{run.statusLabel}</span>
+ </span>
+ </button>
+ {#if run.busy}
+ <button
+ type="button"
+ class="btn btn-ghost btn-xs mt-0.5 text-xs"
+ disabled={stoppingId === run.id}
+ onclick={() => handleStop(run.id)}
+ >
+ {#if stoppingId === run.id}
+ <span class="loading loading-spinner loading-xs"></span>
+ Stopping…
+ {:else}
+ Stop
+ {/if}
+ </button>
+ {/if}
+ </li>
+ {/each}
+ </ul>
+ {#if stopError}
+ <p class="text-xs text-error">{stopError}</p>
+ {/if}
+ {:else if hasLoadedRuns}
+ <!-- Loaded with zero runs (not the pre-first-load gap). No loading
+ indicator — polling is near-instant and a visible one flickered. -->
+ <p class="text-xs opacity-60">No runs yet. Enable the heartbeat to start the loop.</p>
+ {/if}
+ </section>
+</div>
+
+{#if promptEditorOpen}
+ <PromptEditor
+ systemPrompt={form.systemPrompt}
+ taskPrompt={form.taskPrompt}
+ {loadVariables}
+ {loadDefaultPrompt}
+ {saveConfig}
+ onSaved={(systemPrompt, taskPrompt) => {
+ // Sync the form + the diff baseline so the main Save button + formDiffers
+ // stay accurate (the editor persisted the prompts already). `systemPrompt`
+ // may be "" (inherit) — the form stores the raw override.
+ form = { ...form, systemPrompt, taskPrompt };
+ loadedConfig = { ...loadedConfig, systemPrompt, taskPrompt };
+ justSaved = true;
+ }}
+ onClose={() => (promptEditorOpen = false)}
+ />
+{/if}
diff --git a/src/features/heartbeat/ui/PromptEditor.svelte b/src/features/heartbeat/ui/PromptEditor.svelte
new file mode 100644
index 0000000..2320827
--- /dev/null
+++ b/src/features/heartbeat/ui/PromptEditor.svelte
@@ -0,0 +1,412 @@
+<script lang="ts">
+ import type { SystemPromptVariable } from "@dispatch/transport-contract";
+ import { tick, untrack } from "svelte";
+ import {
+ buildTag,
+ groupVariables,
+ insertTag,
+ isDynamicVariable,
+ type LoadSystemPrompt,
+ type LoadSystemPromptVariables,
+ } from "../../system-prompt";
+ import type { SaveHeartbeatConfig } from "../logic/types";
+ import {
+ effectiveSystemPrompt,
+ isInheritingSystemPrompt,
+ persistedSystemPrompt,
+ } from "../logic/view-model";
+ import { portal } from "../../../adapters/portal";
+
+ let {
+ systemPrompt,
+ taskPrompt,
+ loadVariables,
+ loadDefaultPrompt,
+ saveConfig,
+ onSaved,
+ onClose,
+ }: {
+ /**
+ * The heartbeat's persisted system prompt (raw override). Empty = inherit
+ * the global system prompt (the workspace's regular prompt).
+ */
+ systemPrompt: string;
+ /** The current task prompt (seeded from the loaded config). */
+ taskPrompt: string;
+ /** Load the available variables (`GET /system-prompt/variables`). */
+ loadVariables: LoadSystemPromptVariables;
+ /** Load the GLOBAL system prompt (`GET /system-prompt`) — the default the
+ * heartbeat inherits when its `systemPrompt` is empty. */
+ loadDefaultPrompt: LoadSystemPrompt;
+ /** Persist both prompts via a partial heartbeat config PUT. */
+ saveConfig: SaveHeartbeatConfig;
+ /** Called after a successful save with the RAW persisted prompts (system
+ * may be "" = inherit), so the parent can sync its form. */
+ onSaved: (systemPrompt: string, taskPrompt: string) => void;
+ onClose: () => void;
+ } = $props();
+
+ // The global default system prompt (loaded async on open). Empty until loaded
+ // (or when no global prompt is configured) — the editor degrades gracefully.
+ let defaultPrompt = $state("");
+
+ // The editable system text. Pre-filled with the EFFECTIVE prompt — the
+ // heartbeat's override, or the global default when inheriting (so the user
+ // can see + tweak what will run). A pre-filled default is NOT an explicit
+ // edit (see `hasChanges`).
+ let system = $state(untrack(() => systemPrompt));
+ let task = $state(untrack(() => taskPrompt));
+
+ // The raw persisted override at open + after each save (the diff baseline for
+ // the system field). Empty = the heartbeat is inheriting the global default.
+ // REACTIVE so a successful save can update it to the newly-persisted value —
+ // otherwise `systemBaseline` stays pinned to the open-time value and
+ // `hasChanges` never clears (the "Save flickers and reverts" bug).
+ let loadedSystemRaw = $state(untrack(() => systemPrompt));
+ let loadedTask = $state(untrack(() => taskPrompt));
+
+ let variables = $state<readonly SystemPromptVariable[]>([]);
+ let varsLoading = $state(false);
+ let varsError = $state<string | null>(null);
+ let defaultLoading = $state(false);
+
+ let saving = $state(false);
+ let saveError = $state<string | null>(null);
+ let justSaved = $state(false);
+
+ // The textarea currently focused — variable insertion targets THIS one.
+ type Field = "system" | "task";
+ let activeField = $state<Field>("system");
+ let systemEl = $state<HTMLTextAreaElement | null>(null);
+ let taskEl = $state<HTMLTextAreaElement | null>(null);
+
+ const groups = $derived(groupVariables(variables));
+ /** The baseline system text to diff against: the effective prompt at open +
+ * after the last save (override, or the default when inheriting) — so a
+ * pre-filled default does NOT register as an unsaved change, and a saved
+ * edit clears `hasChanges` (the baseline tracks the persisted value). */
+ const systemBaseline = $derived(effectiveSystemPrompt(loadedSystemRaw, defaultPrompt));
+ const hasChanges = $derived(system !== systemBaseline || task !== loadedTask);
+ /** Whether the current text matches the default (i.e. saving would inherit). */
+ const inheriting = $derived(system === defaultPrompt && defaultPrompt !== "");
+
+ async function loadVars(): Promise<void> {
+ untrack(() => {
+ varsLoading = true;
+ varsError = null;
+ });
+ const result = await loadVariables();
+ varsLoading = false;
+ if (result.ok) {
+ variables = result.variables;
+ } else {
+ varsError = result.error;
+ }
+ }
+
+ async function loadDefault(): Promise<void> {
+ untrack(() => {
+ defaultLoading = true;
+ });
+ const result = await loadDefaultPrompt();
+ defaultLoading = false;
+ if (result.ok) {
+ defaultPrompt = result.template;
+ // Pre-fill an inheriting (empty) override with the global default so the
+ // user can see + tweak what will run — but ONLY if they haven't edited
+ // the system field yet (system still equals the open-time raw override).
+ // Done here (not in a reactive $effect) so a late-loading default can't
+ // clobber an in-flight edit.
+ if (isInheritingSystemPrompt(loadedSystemRaw) && system === loadedSystemRaw) {
+ system = defaultPrompt;
+ }
+ }
+ // A failed default load is non-fatal: the editor still works with the
+ // raw override; only the "inherit" affordance is unavailable.
+ }
+
+ async function save(): Promise<void> {
+ if (saving || !hasChanges) return;
+ saving = true;
+ saveError = null;
+ justSaved = false;
+ // Persist the system prompt via the inheritance helper: matching the
+ // default (or empty) → "" (inherit); otherwise the override verbatim.
+ const systemToPersist = persistedSystemPrompt(system, defaultPrompt);
+ const result = await saveConfig({ systemPrompt: systemToPersist, taskPrompt: task });
+ saving = false;
+ if (result === null) return;
+ if (result.ok) {
+ // Advance the diff baseline to the persisted value so `hasChanges`
+ // clears (systemBaseline recomputes off loadedSystemRaw). Without this
+ // the baseline stays pinned to the open-time value and the Save button
+ // never settles ("flickers and reverts to unsaved").
+ loadedSystemRaw = systemToPersist;
+ loadedTask = task;
+ justSaved = true;
+ onSaved(systemToPersist, task);
+ } else {
+ saveError = result.error;
+ }
+ }
+
+ /** Revert ALL edits to the open-time state (system effective prompt + task). */
+ function reset(): void {
+ system = systemBaseline;
+ task = loadedTask;
+ saveError = null;
+ justSaved = false;
+ }
+
+ /** Reset ONLY the system prompt to the global default (clears any override →
+ * inherit on save). No-op until the default has loaded. */
+ function resetSystemToDefault(): void {
+ if (defaultPrompt === "") return;
+ system = defaultPrompt;
+ saveError = null;
+ justSaved = false;
+ }
+
+ /**
+ * Insert a variable tag into the ACTIVE textarea at its cursor. The active
+ * field is tracked via focus handlers; insertion uses that field's element +
+ * its own text (so a tag never lands in the wrong box).
+ */
+ async function insertAtActive(tag: string): Promise<void> {
+ const el = activeField === "system" ? systemEl : taskEl;
+ if (el === null) return;
+ const start = el.selectionStart;
+ const end = el.selectionEnd;
+ if (activeField === "system") {
+ const ins = insertTag(system, tag, start, end);
+ system = ins.template;
+ await tick();
+ el.focus();
+ el.setSelectionRange(ins.cursor, ins.cursor);
+ } else {
+ const ins = insertTag(task, tag, start, end);
+ task = ins.template;
+ await tick();
+ el.focus();
+ el.setSelectionRange(ins.cursor, ins.cursor);
+ }
+ }
+
+ /** Dynamic (file:<path>) variable: build the tag from the input + insert. */
+ async function insertDynamic(type: string, path: string): Promise<void> {
+ const trimmed = path.trim();
+ if (trimmed.length === 0) return;
+ await insertAtActive(buildTag(type, trimmed));
+ }
+
+ function onKeydown(e: KeyboardEvent): void {
+ if (e.key === "Escape") onClose();
+ }
+
+ // Load the variable palette + the global default once on open.
+ $effect(() => {
+ void loadVars();
+ void loadDefault();
+ });
+</script>
+
+<svelte:window onkeydown={onKeydown} />
+
+<!-- Teleported to <body> (use:portal) so `position: fixed` resolves against the
+ VIEWPORT, not the sidebar's `transform: translateX(...)` container — an
+ ancestor transform establishes a containing block for `fixed`, which would
+ otherwise clip this overlay to the sidebar area. (RunModal/SystemPromptBuilder
+ avoid this by rendering at the composition root; this modal lives inside
+ HeartbeatView, so it must escape its ancestor.) -->
+<!-- svelte-ignore a11y_no_static_element_interactions -->
+<div
+ use:portal
+ class="fixed inset-0 z-50 flex items-center justify-center bg-black/50 p-4"
+ role="dialog"
+ aria-modal="true"
+ aria-label="Heartbeat prompt editor"
+ tabindex="-1"
+ onclick={onClose}
+ onkeydown={onKeydown}
+>
+ <!-- svelte-ignore a11y_click_events_have_key_events, a11y_no_static_element_interactions -->
+ <div
+ class="flex h-[85vh] w-full max-w-6xl flex-col overflow-hidden rounded-box bg-base-100 shadow-2xl"
+ onclick={(e) => e.stopPropagation()}
+ >
+ <!-- Header -->
+ <div class="flex shrink-0 items-center justify-between border-b border-base-300 px-4 py-3">
+ <div class="flex items-center gap-2">
+ <h2 class="text-sm font-semibold">Heartbeat Prompts</h2>
+ {#if varsLoading}
+ <span class="loading loading-spinner loading-xs"></span>
+ {/if}
+ </div>
+ <button
+ type="button"
+ class="btn btn-ghost btn-sm btn-square"
+ onclick={onClose}
+ aria-label="Close prompt editor"
+ >
+ ✕
+ </button>
+ </div>
+
+ <!-- Body: half editor (two boxes) / half variables -->
+ <div class="flex min-h-0 flex-1">
+ <!-- Left: two text editors (system top, task bottom) -->
+ <div class="flex w-1/2 min-w-0 flex-col gap-2 border-r border-base-300 p-4">
+ <div class="flex min-h-0 flex-1 flex-col gap-1">
+ <div class="flex shrink-0 items-center justify-between gap-2">
+ <div class="flex items-center gap-2">
+ <span class="text-xs font-semibold uppercase opacity-60">System prompt</span>
+ {#if defaultLoading}
+ <span class="loading loading-spinner loading-xs"></span>
+ {:else if inheriting}
+ <span class="badge badge-ghost badge-sm font-normal">Inheriting workspace default</span>
+ {/if}
+ </div>
+ <button
+ type="button"
+ class="btn btn-ghost btn-xs"
+ disabled={defaultPrompt === "" || saving}
+ onclick={resetSystemToDefault}
+ title="Reset the system prompt to the workspace default (inherit)"
+ >
+ Reset to default
+ </button>
+ </div>
+ <textarea
+ bind:this={systemEl}
+ bind:value={system}
+ onfocus={() => (activeField = "system")}
+ class="textarea textarea-bordered min-h-0 w-full flex-1 resize-none font-mono text-xs"
+ placeholder={defaultPrompt || "You are an autonomous agent…"}
+ disabled={saving}
+ aria-label="Heartbeat system prompt"
+ ></textarea>
+ <p class="shrink-0 text-xs opacity-50">
+ {#if inheriting}
+ Matches the workspace default — saving will inherit it (no override).
+ {:else if defaultPrompt !== ""}
+ Editing overrides the workspace default.
+ {:else}
+ Empty — no system prompt set.
+ {/if}
+ </p>
+ </div>
+
+ <div class="flex min-h-0 flex-1 flex-col gap-1">
+ <span class="shrink-0 text-xs font-semibold uppercase opacity-60">Task prompt</span>
+ <textarea
+ bind:this={taskEl}
+ bind:value={task}
+ onfocus={() => (activeField = "task")}
+ class="textarea textarea-bordered min-h-0 w-full flex-1 resize-none font-mono text-xs"
+ placeholder="Check the system status and report…"
+ disabled={saving}
+ aria-label="Heartbeat task prompt"
+ ></textarea>
+ </div>
+
+ <div class="flex shrink-0 flex-wrap items-center gap-2">
+ <button
+ type="button"
+ class="btn btn-primary btn-sm"
+ disabled={saving || !hasChanges}
+ onclick={save}
+ >
+ {#if saving}
+ <span class="loading loading-spinner loading-xs"></span>
+ {:else}
+ Save
+ {/if}
+ </button>
+ <button
+ type="button"
+ class="btn btn-ghost btn-sm"
+ disabled={!hasChanges}
+ onclick={reset}
+ >
+ Reset
+ </button>
+ {#if justSaved && !hasChanges}
+ <span class="text-xs text-success">Saved.</span>
+ {:else if hasChanges}
+ <span class="text-xs opacity-60">Unsaved changes</span>
+ {/if}
+ </div>
+
+ {#if saveError}
+ <p class="shrink-0 text-xs text-error">{saveError}</p>
+ {/if}
+ </div>
+
+ <!-- Right: variable palette -->
+ <div class="flex w-1/2 min-w-0 flex-col overflow-y-auto p-4">
+ <h3 class="mb-2 shrink-0 text-xs font-semibold uppercase opacity-60">Variables</h3>
+ <p class="mb-3 shrink-0 text-xs opacity-50">
+ Click a variable to insert it into the focused prompt box.
+ </p>
+ {#if varsError}
+ <p class="text-xs text-error">{varsError}</p>
+ {:else if groups.length === 0 && !varsLoading}
+ <p class="text-xs opacity-60">No variables available.</p>
+ {:else}
+ <div class="flex flex-col gap-3">
+ {#each groups as group (group.type)}
+ <div class="rounded-box bg-base-200 p-3">
+ <span class="text-xs font-semibold uppercase opacity-70">{group.type}</span>
+ <div class="mt-2 flex flex-wrap gap-1">
+ {#each group.variables as variable (variable.type + variable.name)}
+ {#if isDynamicVariable(variable)}
+ <!-- Dynamic (file:<path>) variable: a path input + Insert button. -->
+ <div class="flex items-center gap-1">
+ <input
+ type="text"
+ class="input input-bordered input-xs w-32 font-mono"
+ placeholder={variable.name}
+ onkeydown={(e) => {
+ if (e.key === "Enter") {
+ const v = e.currentTarget.value;
+ void insertDynamic(variable.type, v);
+ e.currentTarget.value = "";
+ }
+ }}
+ />
+ <button
+ type="button"
+ class="btn btn-xs"
+ onclick={(e) => {
+ const input = (e.currentTarget as HTMLButtonElement)
+ .previousElementSibling as HTMLInputElement | null;
+ if (input !== null) {
+ void insertDynamic(variable.type, input.value);
+ input.value = "";
+ }
+ }}
+ >
+ Insert
+ </button>
+ </div>
+ {:else}
+ <button
+ type="button"
+ class="btn btn-xs"
+ title={variable.description}
+ onclick={() =>
+ void insertAtActive(buildTag(variable.type, variable.name))}
+ >
+ {variable.name}
+ </button>
+ {/if}
+ {/each}
+ </div>
+ </div>
+ {/each}
+ </div>
+ {/if}
+ </div>
+ </div>
+ </div>
+</div>
diff --git a/src/features/heartbeat/ui/PromptEditor.test.ts b/src/features/heartbeat/ui/PromptEditor.test.ts
new file mode 100644
index 0000000..284b319
--- /dev/null
+++ b/src/features/heartbeat/ui/PromptEditor.test.ts
@@ -0,0 +1,167 @@
+import { render, screen } from "@testing-library/svelte";
+import userEvent from "@testing-library/user-event";
+import { describe, expect, it, vi } from "vitest";
+import type {
+ HeartbeatConfigPatch,
+ HeartbeatConfigResult,
+ SaveHeartbeatConfig,
+} from "../logic/types";
+import PromptEditor from "./PromptEditor.svelte";
+
+// Fakes for the injected ports.
+
+function fakeLoadVariables() {
+ return vi.fn(async () => ({ ok: true, variables: [] }) as const);
+}
+
+function fakeLoadDefaultPrompt(template = "You are a helpful assistant.") {
+ return vi.fn(async () => ({ ok: true, template }) as const);
+}
+
+/** A capturing saveConfig that resolves ok, echoing the merged config shape. */
+function fakeSaveConfig(): {
+ calls: HeartbeatConfigPatch[];
+ impl: SaveHeartbeatConfig;
+} {
+ const calls: HeartbeatConfigPatch[] = [];
+ const impl: SaveHeartbeatConfig = async (patch) => {
+ calls.push(patch);
+ // Echo a config that reflects the persisted patch (so onSaved sync is realistic).
+ const config = {
+ enabled: false,
+ systemPrompt: patch.systemPrompt ?? "",
+ taskPrompt: patch.taskPrompt ?? "",
+ intervalMinutes: 30,
+ model: "openai/gpt-4o",
+ reasoningEffort: null,
+ };
+ return { ok: true, config } satisfies HeartbeatConfigResult;
+ };
+ return { calls, impl };
+}
+
+const baseProps = (overrides: Record<string, unknown> = {}) => ({
+ systemPrompt: "",
+ taskPrompt: "",
+ loadVariables: fakeLoadVariables(),
+ loadDefaultPrompt: fakeLoadDefaultPrompt(),
+ saveConfig: fakeSaveConfig().impl,
+ onSaved: vi.fn(),
+ onClose: vi.fn(),
+ ...overrides,
+});
+
+describe("PromptEditor save flow", () => {
+ it("persists an edited system prompt and clears the unsaved state (regression: save flickered + reverted)", async () => {
+ const user = userEvent.setup();
+ const save = fakeSaveConfig();
+ const onSaved = vi.fn();
+ render(PromptEditor, {
+ props: baseProps({
+ // Start inheriting (empty override); the default pre-fills.
+ systemPrompt: "",
+ saveConfig: save.impl,
+ onSaved,
+ }),
+ });
+
+ // Wait for the default to load + pre-fill the system textarea.
+ const systemBox = await screen.findByLabelText("Heartbeat system prompt");
+ expect(systemBox).toHaveValue("You are a helpful assistant.");
+
+ // Save is disabled while it matches the default (no explicit edit).
+ expect(screen.getByRole("button", { name: "Save" })).toBeDisabled();
+
+ // Edit the system prompt → an override.
+ await user.clear(systemBox);
+ await user.type(systemBox, "custom override");
+
+ // Save is now enabled.
+ const saveBtn = screen.getByRole("button", { name: "Save" });
+ expect(saveBtn).toBeEnabled();
+ await user.click(saveBtn);
+
+ // The save port was called with the override persisted verbatim.
+ expect(save.calls).toHaveLength(1);
+ expect(save.calls[0]?.systemPrompt).toBe("custom override");
+ expect(onSaved).toHaveBeenCalledWith("custom override", "");
+
+ // THE REGRESSION: after save, hasChanges must clear (Save disabled again)
+ // and the "Saved." confirmation shows — NOT "Unsaved changes".
+ await vi.waitFor(() => {
+ expect(screen.getByRole("button", { name: "Save" })).toBeDisabled();
+ });
+ expect(screen.getByText("Saved.")).toBeInTheDocument();
+ expect(screen.queryByText(/Unsaved changes/i)).not.toBeInTheDocument();
+ });
+
+ it("persisting text that matches the default sends '' (inherit) and clears unsaved state", async () => {
+ const user = userEvent.setup();
+ const save = fakeSaveConfig();
+ render(PromptEditor, {
+ props: baseProps({
+ // Start with an override.
+ systemPrompt: "old override",
+ saveConfig: save.impl,
+ }),
+ });
+
+ const systemBox = await screen.findByLabelText("Heartbeat system prompt");
+ expect(systemBox).toHaveValue("old override");
+
+ // Reset to default → text matches the default → saving inherits ("").
+ await user.click(screen.getByRole("button", { name: "Reset to default" }));
+ expect(systemBox).toHaveValue("You are a helpful assistant.");
+
+ const saveBtn = screen.getByRole("button", { name: "Save" });
+ expect(saveBtn).toBeEnabled();
+ await user.click(saveBtn);
+
+ expect(save.calls).toHaveLength(1);
+ expect(save.calls[0]?.systemPrompt).toBe(""); // inherit
+ await vi.waitFor(() => {
+ expect(screen.getByRole("button", { name: "Save" })).toBeDisabled();
+ });
+ expect(screen.getByText("Saved.")).toBeInTheDocument();
+ });
+
+ it("editing the task prompt saves + clears unsaved state", async () => {
+ const user = userEvent.setup();
+ const save = fakeSaveConfig();
+ render(PromptEditor, {
+ props: baseProps({ saveConfig: save.impl }),
+ });
+
+ const taskBox = await screen.findByLabelText("Heartbeat task prompt");
+ await user.type(taskBox, "do the thing");
+
+ const saveBtn = screen.getByRole("button", { name: "Save" });
+ expect(saveBtn).toBeEnabled();
+ await user.click(saveBtn);
+
+ expect(save.calls[0]?.taskPrompt).toBe("do the thing");
+ await vi.waitFor(() => {
+ expect(screen.getByRole("button", { name: "Save" })).toBeDisabled();
+ });
+ expect(screen.getByText("Saved.")).toBeInTheDocument();
+ });
+
+ it("a failed save surfaces the error and keeps the edit unsaved", async () => {
+ const user = userEvent.setup();
+ const failingSave: SaveHeartbeatConfig = async () => ({ ok: false, error: "boom" });
+ render(PromptEditor, {
+ props: baseProps({ saveConfig: failingSave }),
+ });
+
+ const systemBox = await screen.findByLabelText("Heartbeat system prompt");
+ await user.clear(systemBox);
+ await user.type(systemBox, "custom");
+
+ await user.click(screen.getByRole("button", { name: "Save" }));
+
+ expect(screen.getByText("boom")).toBeInTheDocument();
+ // Still unsaved (Save stays enabled), no success badge.
+ expect(screen.getByRole("button", { name: "Save" })).toBeEnabled();
+ expect(screen.queryByText("Saved.")).not.toBeInTheDocument();
+ });
+});
diff --git a/src/features/heartbeat/ui/RunModal.svelte b/src/features/heartbeat/ui/RunModal.svelte
new file mode 100644
index 0000000..92068ae
--- /dev/null
+++ b/src/features/heartbeat/ui/RunModal.svelte
@@ -0,0 +1,176 @@
+<script lang="ts">
+ import { tick } from "svelte";
+ import { ChatView } from "../../chat";
+ import type { ChatStore } from "../../chat";
+ import type { HeartbeatRunView } from "../logic/view-model";
+ import type { StopHeartbeatRun } from "../logic/types";
+
+ let {
+ run,
+ openChat,
+ closeChat,
+ stopRun,
+ onClose,
+ apiBaseUrl = "",
+ }: {
+ /** The run to display (its conversation's chat is shown live). */
+ run: HeartbeatRunView;
+ /**
+ * Open a live watch on a conversation (the store's `watchConversation`):
+ * returns a {@link ChatStore} subscribed to the conversation's turn stream
+ * + history loaded. The modal owns the watch lifecycle — calls
+ * `closeChat` on unmount.
+ */
+ openChat: (conversationId: string) => ChatStore;
+ /** Dispose + unsubscribe the watch opened by `openChat`. */
+ closeChat: (conversationId: string) => void;
+ /** Stop the heartbeat run (`POST .../runs/:runId/stop`). */
+ stopRun: StopHeartbeatRun;
+ onClose: () => void;
+ /**
+ * The HTTP API base URL, to resolve persisted image chunk URLs
+ * (`/images/…`) in the run's transcript. Defaults to "" (root-relative).
+ */
+ apiBaseUrl?: string;
+ } = $props();
+
+ // Open the live watch ONCE on mount (the modal is keyed per run.id, so a run
+ // switch remounts it). `untrack` avoids re-running if the prop fn identity
+ // changes — `run.conversationId` is the real dependency, captured once here.
+ let chat = $state<ChatStore | null>(null);
+ $effect(() => {
+ chat = openChat(run.conversationId);
+ return () => closeChat(run.conversationId);
+ });
+
+ // Live scroll: keep the transcript pinned to the bottom while it streams
+ // (unless the reader has scrolled up — then we don't fight them).
+ let scrollEl = $state<HTMLDivElement | undefined>();
+ let contentEl = $state<HTMLDivElement | undefined>();
+ let pinned = $state(true);
+
+ function onScroll() {
+ const el = scrollEl;
+ if (el === undefined) return;
+ pinned = el.scrollHeight - el.scrollTop - el.clientHeight < 40;
+ }
+
+ // Follow the bottom on new content while pinned. Reads `chunks.length` so the
+ // effect re-runs on every streamed append.
+ const chunkCount = $derived(chat?.chunks.length ?? 0);
+ $effect(() => {
+ void chunkCount;
+ if (!pinned) return;
+ void tick().then(() => {
+ const el = scrollEl;
+ if (el !== undefined) el.scrollTop = el.scrollHeight;
+ });
+ });
+
+ // Stop state.
+ let stopping = $state(false);
+ let stopError = $state<string | null>(null);
+
+ async function handleStop() {
+ if (stopping) return;
+ stopping = true;
+ stopError = null;
+ const result = await stopRun(run.id);
+ stopping = false;
+ if (result === null) return;
+ if (!result.ok) stopError = result.error;
+ }
+
+ // The live "running" signal: the chat store's `generating` reflects the
+ // actual event stream (turn-start…turn-sealed). True while a turn streams —
+ // that is when a Stop is meaningful. Falls back to the run's status snapshot
+ // before the stream attaches.
+ const live = $derived(chat?.generating ?? run.busy);
+
+ function handleKeydown(e: KeyboardEvent) {
+ if (e.key === "Escape") onClose();
+ }
+</script>
+
+<svelte:window onkeydown={handleKeydown} />
+
+<!-- Fullscreen overlay. -->
+<div class="fixed inset-0 z-50 flex flex-col bg-base-100">
+ <!-- Header -->
+ <header class="flex items-center justify-between gap-2 border-b border-base-300 px-4 py-2">
+ <div class="flex min-w-0 items-center gap-2">
+ <button
+ type="button"
+ class="btn btn-ghost btn-sm"
+ onclick={onClose}
+ aria-label="Close run chat"
+ >
+ ✕
+ </button>
+ <span class="truncate font-mono text-xs opacity-70" title="Run id">{run.id}</span>
+ {#if live}
+ <span class="badge badge-sm badge-warning gap-1">
+ <span class="loading loading-spinner loading-xs"></span>
+ Running
+ </span>
+ {:else}
+ <span class="badge badge-sm badge-ghost">{run.statusLabel}</span>
+ {/if}
+ </div>
+ <div class="flex items-center gap-2">
+ {#if stopError}
+ <span class="text-xs text-error">{stopError}</span>
+ {/if}
+ {#if live}
+ <button
+ type="button"
+ class="btn btn-sm btn-error btn-outline"
+ disabled={stopping}
+ onclick={handleStop}
+ >
+ {#if stopping}
+ <span class="loading loading-spinner loading-xs"></span>
+ Stopping…
+ {:else}
+ Stop
+ {/if}
+ </button>
+ {/if}
+ </div>
+ </header>
+
+ <!-- Transcript -->
+ <div class="relative min-h-0 flex-1">
+ <div bind:this={scrollEl} class="h-full overflow-y-auto" onscroll={onScroll}>
+ <div bind:this={contentEl} class="p-4">
+ {#if chat === null}
+ <div class="flex h-full items-center justify-center">
+ <span class="loading loading-spinner loading-md"></span>
+ </div>
+ {:else if chat.chunks.length === 0 && chat.pendingSync}
+ <div class="flex h-full items-center justify-center">
+ <span class="loading loading-spinner loading-md"></span>
+ </div>
+ {:else}
+ <ChatView
+ chunks={chat.chunks}
+ turnMetrics={chat.turnMetrics}
+ hasEarlier={chat.hasEarlier}
+ onShowEarlier={chat.showEarlier}
+ thinkingKeyBase={chat.thinkingKeyBase}
+ providerRetry={chat.providerRetry}
+ apiBaseUrl={apiBaseUrl}
+ />
+ {/if}
+ </div>
+ </div>
+ {#if chat !== null && chat.chunks.length === 0 && !chat.pendingSync}
+ <div
+ class="pointer-events-none absolute inset-0 flex items-center justify-center"
+ aria-hidden="true"
+ >
+ <span class="select-none text-2xl font-bold opacity-10">No messages</span>
+ </div>
+ {/if}
+ </div>
+</div>
diff --git a/src/features/markdown/index.ts b/src/features/markdown/index.ts
new file mode 100644
index 0000000..ff3aefa
--- /dev/null
+++ b/src/features/markdown/index.ts
@@ -0,0 +1,8 @@
+export { renderMarkdown } from "./logic/markdown";
+export { default as Markdown } from "./ui/Markdown.svelte";
+
+/** Public module manifest — aggregated by the shell's "Loaded Modules" view. */
+export const manifest = {
+ name: "markdown",
+ description: "Renders assistant messages as sanitized Markdown (GFM + syntax highlighting)",
+} as const;
diff --git a/src/features/markdown/logic/markdown.test.ts b/src/features/markdown/logic/markdown.test.ts
new file mode 100644
index 0000000..54b0086
--- /dev/null
+++ b/src/features/markdown/logic/markdown.test.ts
@@ -0,0 +1,58 @@
+import { describe, expect, it } from "vitest";
+import { renderMarkdown } from "./markdown";
+
+describe("renderMarkdown", () => {
+ it("renders GFM markdown (headings, emphasis)", () => {
+ const html = renderMarkdown("# Title\n\nSome **bold** text.");
+ expect(html).toContain("<h1");
+ expect(html).toContain("Title");
+ expect(html).toContain("<strong>bold</strong>");
+ });
+
+ it("highlights fenced code for a known language", () => {
+ const html = renderMarkdown("```javascript\nconst x = 1;\n```");
+ expect(html).toContain("language-javascript");
+ expect(html).toContain("hljs-keyword"); // `const` got highlighted
+ });
+
+ it("resolves language aliases (js -> javascript)", () => {
+ const html = renderMarkdown("```js\nconst x = 1;\n```");
+ expect(html).toContain("hljs-keyword");
+ });
+
+ it("escapes code for an unknown language without throwing", () => {
+ const html = renderMarkdown("```nope\n<b>x</b>\n```");
+ expect(html).toContain("&lt;b&gt;");
+ });
+
+ it("sanitizes dangerous HTML", () => {
+ const html = renderMarkdown("Hi <script>alert(1)</script> there");
+ expect(html).not.toContain("<script>");
+ expect(html).toContain("Hi");
+ });
+
+ it("balances dangling bold emphasis while streaming", () => {
+ expect(renderMarkdown("a **bold", { streaming: true })).toContain("<strong>bold</strong>");
+ });
+
+ it("does not balance delimiters when not streaming", () => {
+ expect(renderMarkdown("a **bold")).not.toContain("<strong>");
+ });
+
+ it("wraps fenced code blocks with a copy button", () => {
+ const html = renderMarkdown("```js\nconst x = 1;\n```");
+ expect(html).toContain("code-block");
+ expect(html).toContain("data-copy");
+ expect(html).toContain("<pre>");
+ });
+
+ it("does not add a copy button to inline code", () => {
+ const html = renderMarkdown("use `npm run dev` please");
+ expect(html).not.toContain("data-copy");
+ expect(html).toContain("<code>npm run dev</code>");
+ });
+
+ it("returns an empty string for empty input", () => {
+ expect(renderMarkdown("")).toBe("");
+ });
+});
diff --git a/src/features/markdown/logic/markdown.ts b/src/features/markdown/logic/markdown.ts
new file mode 100644
index 0000000..ad8a8bd
--- /dev/null
+++ b/src/features/markdown/logic/markdown.ts
@@ -0,0 +1,165 @@
+/**
+ * Pure Markdown → sanitized-HTML renderer for assistant messages.
+ *
+ * Mirrors old Dispatch's stack (marked + marked-highlight + highlight.js +
+ * DOMPurify; GFM + line breaks; streaming delimiter-closing), but kept fully
+ * SYNCHRONOUS and pure: `input → output`, no effects, no `$effect`. Languages
+ * are a fixed "hot set" registered at module load (no lazy dynamic import), so a
+ * single `renderMarkdown(text)` call is deterministic and unit-testable.
+ *
+ * The only ambient dependency is DOMPurify, which sanitizes against the DOM —
+ * present in the browser and in the jsdom test env.
+ */
+
+import DOMPurify from "dompurify";
+import type { LanguageFn } from "highlight.js";
+import hljs from "highlight.js/lib/core";
+import bash from "highlight.js/lib/languages/bash";
+import c from "highlight.js/lib/languages/c";
+import cpp from "highlight.js/lib/languages/cpp";
+import csharp from "highlight.js/lib/languages/csharp";
+import css from "highlight.js/lib/languages/css";
+import go from "highlight.js/lib/languages/go";
+import java from "highlight.js/lib/languages/java";
+import javascript from "highlight.js/lib/languages/javascript";
+import json from "highlight.js/lib/languages/json";
+import markdownLang from "highlight.js/lib/languages/markdown";
+import php from "highlight.js/lib/languages/php";
+import plaintext from "highlight.js/lib/languages/plaintext";
+import python from "highlight.js/lib/languages/python";
+import ruby from "highlight.js/lib/languages/ruby";
+import rust from "highlight.js/lib/languages/rust";
+import shell from "highlight.js/lib/languages/shell";
+import sql from "highlight.js/lib/languages/sql";
+import typescript from "highlight.js/lib/languages/typescript";
+import xml from "highlight.js/lib/languages/xml";
+import yaml from "highlight.js/lib/languages/yaml";
+import { Marked } from "marked";
+import { markedHighlight } from "marked-highlight";
+
+// Hot set: registered eagerly so common code blocks highlight on first paint.
+const HOT_LANGUAGES: Record<string, LanguageFn> = {
+ bash,
+ c,
+ cpp,
+ csharp,
+ css,
+ go,
+ java,
+ javascript,
+ json,
+ markdown: markdownLang,
+ php,
+ plaintext,
+ python,
+ ruby,
+ rust,
+ shell,
+ sql,
+ typescript,
+ xml,
+ yaml,
+};
+for (const [name, lang] of Object.entries(HOT_LANGUAGES)) {
+ hljs.registerLanguage(name, lang);
+}
+
+// Normalize common fence aliases to canonical highlight.js names.
+const ALIASES: Record<string, string> = {
+ js: "javascript",
+ jsx: "javascript",
+ mjs: "javascript",
+ cjs: "javascript",
+ ts: "typescript",
+ tsx: "typescript",
+ py: "python",
+ py3: "python",
+ rb: "ruby",
+ sh: "bash",
+ zsh: "bash",
+ yml: "yaml",
+ "c++": "cpp",
+ cxx: "cpp",
+ "c#": "csharp",
+ cs: "csharp",
+ htm: "xml",
+ html: "xml",
+ svg: "xml",
+ md: "markdown",
+ mdx: "markdown",
+ golang: "go",
+ rs: "rust",
+};
+
+function normalizeLang(lang: string): string {
+ const lower = lang.toLowerCase().trim();
+ return ALIASES[lower] ?? lower;
+}
+
+function escapeHtml(s: string): string {
+ return s
+ .replace(/&/g, "&amp;")
+ .replace(/</g, "&lt;")
+ .replace(/>/g, "&gt;")
+ .replace(/"/g, "&quot;")
+ .replace(/'/g, "&#39;");
+}
+
+const md = new Marked(
+ markedHighlight({
+ emptyLangClass: "hljs",
+ langPrefix: "hljs language-",
+ highlight(code: string, lang: string): string {
+ if (!lang) return escapeHtml(code);
+ const name = normalizeLang(lang);
+ if (!hljs.getLanguage(name)) return escapeHtml(code);
+ try {
+ return hljs.highlight(code, { language: name, ignoreIllegals: true }).value;
+ } catch {
+ return escapeHtml(code);
+ }
+ },
+ }),
+ { gfm: true, breaks: true },
+);
+
+/**
+ * While a message is still streaming, balance dangling fences / emphasis so the
+ * partial text renders cleanly instead of flashing raw markers.
+ */
+function closeOpenDelimiters(src: string): string {
+ let out = src;
+ const fenceCount = (out.match(/^```/gm) ?? []).length;
+ if (fenceCount % 2 !== 0) out += "\n```";
+ const boldCount = (out.match(/\*\*/g) ?? []).length;
+ if (boldCount % 2 !== 0) out += "**";
+ const inlineCode = (out.match(/(?<!`)`(?!`)/g) ?? []).length;
+ if (inlineCode % 2 !== 0) out += "`";
+ return out;
+}
+
+// Wrap each fenced code block (`<pre>…</pre>`) in a positioned container with a
+// copy button. marked emits exactly one `<pre>`/`</pre>` pair per block and
+// escapes `<`/`>` inside code, so these literal tags only ever delimit blocks.
+// `data-copy` is the delegation hook the component listens for; DOMPurify keeps
+// `<button>` + `data-*` by default. Inline `<code>` has no `<pre>`, so it's untouched.
+const COPY_BUTTON =
+ '<button type="button" data-copy aria-label="Copy code"' +
+ ' class="copy-btn btn btn-xs absolute right-2 top-2 opacity-0 transition-opacity group-hover:opacity-100">Copy</button>';
+
+function addCopyButtons(html: string): string {
+ return html
+ .replace(/<pre>/g, `<div class="code-block group relative">${COPY_BUTTON}<pre>`)
+ .replace(/<\/pre>/g, "</pre></div>");
+}
+
+/** Render Markdown to sanitized HTML. Returns `""` if parsing ever throws. */
+export function renderMarkdown(text: string, opts?: { streaming?: boolean }): string {
+ const src = opts?.streaming === true ? closeOpenDelimiters(text) : text;
+ try {
+ const raw = md.parse(src) as string;
+ return DOMPurify.sanitize(addCopyButtons(raw));
+ } catch {
+ return "";
+ }
+}
diff --git a/src/features/markdown/ui/Markdown.svelte b/src/features/markdown/ui/Markdown.svelte
new file mode 100644
index 0000000..72b892b
--- /dev/null
+++ b/src/features/markdown/ui/Markdown.svelte
@@ -0,0 +1,58 @@
+<script lang="ts">
+ import { renderMarkdown } from "../logic/markdown";
+
+ let {
+ text,
+ streaming = false,
+ }: {
+ text: string;
+ /** Balance dangling delimiters while the message is still generating. */
+ streaming?: boolean;
+ } = $props();
+
+ // Pure transform; the HTML is already DOMPurify-sanitized in renderMarkdown.
+ const html = $derived(renderMarkdown(text, { streaming }));
+
+ let container: HTMLElement;
+
+ // One delegated listener on the stable container handles every code block's
+ // copy button — including blocks re-created when `html` changes (streaming),
+ // since the listener lives on the container, not the buttons. Clipboard is the
+ // edge effect; absent (insecure context) → no-op.
+ $effect(() => {
+ const el = container;
+ if (el === undefined) return;
+
+ const onClick = (event: Event): void => {
+ const target = event.target;
+ if (!(target instanceof Element)) return;
+ const button = target.closest<HTMLButtonElement>("[data-copy]");
+ if (button === null) return;
+
+ const code = button.closest(".code-block")?.querySelector("code")?.textContent ?? "";
+ const clipboard = navigator.clipboard;
+ if (clipboard === undefined) return;
+
+ void clipboard
+ .writeText(code)
+ .then(() => {
+ const prev = button.textContent;
+ button.textContent = "Copied";
+ setTimeout(() => {
+ button.textContent = prev;
+ }, 1200);
+ })
+ .catch(() => {
+ // Clipboard denied — leave the button as-is.
+ });
+ };
+
+ el.addEventListener("click", onClick);
+ return () => el.removeEventListener("click", onClick);
+ });
+</script>
+
+<div class="markdown-body" bind:this={container}>
+ <!-- {@html} is safe here: `html` is DOMPurify-sanitized inside renderMarkdown. -->
+ {@html html}
+</div>
diff --git a/src/features/markdown/ui/markdown.test.ts b/src/features/markdown/ui/markdown.test.ts
new file mode 100644
index 0000000..d65b3d1
--- /dev/null
+++ b/src/features/markdown/ui/markdown.test.ts
@@ -0,0 +1,40 @@
+import { fireEvent, render, screen } from "@testing-library/svelte";
+import { describe, expect, it, vi } from "vitest";
+import Markdown from "./Markdown.svelte";
+
+describe("Markdown", () => {
+ it("renders markdown into a .markdown-body container", () => {
+ const { container } = render(Markdown, { props: { text: "# Hello\n\n**hi**" } });
+
+ expect(container.querySelector(".markdown-body")).not.toBeNull();
+ expect(screen.getByRole("heading", { level: 1, name: "Hello" })).toBeInTheDocument();
+ expect(container.querySelector("strong")?.textContent).toBe("hi");
+ });
+
+ it("strips dangerous markup", () => {
+ const { container } = render(Markdown, {
+ props: { text: "before <script>alert(1)</script> after" },
+ });
+
+ expect(container.querySelector("script")).toBeNull();
+ expect(container.textContent).toContain("before");
+ });
+
+ it("renders a copy button on a code block that copies the code to the clipboard", async () => {
+ const writeText = vi.fn().mockResolvedValue(undefined);
+ Object.defineProperty(navigator, "clipboard", { value: { writeText }, configurable: true });
+
+ const { container } = render(Markdown, {
+ props: { text: "```js\nconst x = 1;\n```" },
+ });
+
+ const button = container.querySelector<HTMLElement>("[data-copy]");
+ expect(button).not.toBeNull();
+ if (button === null) throw new Error("expected a copy button");
+
+ await fireEvent.click(button);
+
+ expect(writeText).toHaveBeenCalledTimes(1);
+ expect(writeText.mock.calls[0]?.[0]).toContain("const x = 1;");
+ });
+});
diff --git a/src/features/mcp/index.ts b/src/features/mcp/index.ts
new file mode 100644
index 0000000..9abc023
--- /dev/null
+++ b/src/features/mcp/index.ts
@@ -0,0 +1,8 @@
+export type { LoadMcpStatus, McpStatusResult } from "./logic/view-model";
+export { default as McpStatusView } from "./ui/McpStatusView.svelte";
+
+/** Public module manifest — aggregated by the shell's "Loaded Modules" view. */
+export const manifest = {
+ name: "mcp",
+ description: "Per-conversation MCP (Model Context Protocol) server status",
+} as const;
diff --git a/src/features/mcp/logic/view-model.test.ts b/src/features/mcp/logic/view-model.test.ts
new file mode 100644
index 0000000..d1a77d1
--- /dev/null
+++ b/src/features/mcp/logic/view-model.test.ts
@@ -0,0 +1,88 @@
+import type { McpServerInfo } from "@dispatch/transport-contract";
+import { describe, expect, it } from "vitest";
+import { summarizeMcpServers, viewMcpServer, viewMcpServers } from "./view-model";
+
+const server = (over: Partial<McpServerInfo> = {}): McpServerInfo => ({
+ id: "freecad",
+ state: "connected",
+ toolCount: 12,
+ ...over,
+});
+
+describe("viewMcpServer", () => {
+ it("connected → success badge, not busy, no error, passes toolCount", () => {
+ const v = viewMcpServer(server({ toolCount: 5 }));
+ expect(v.badge).toBe("success");
+ expect(v.statusLabel).toBe("Connected");
+ expect(v.busy).toBe(false);
+ expect(v.error).toBeNull();
+ expect(v.toolCount).toBe(5);
+ expect(v.configSource).toBeNull();
+ });
+
+ it("connecting → warning badge + busy (spinner)", () => {
+ const v = viewMcpServer(server({ state: "connecting" }));
+ expect(v.badge).toBe("warning");
+ expect(v.statusLabel).toBe("Connecting…");
+ expect(v.busy).toBe(true);
+ expect(v.error).toBeNull();
+ });
+
+ it("disconnected → neutral badge, not busy", () => {
+ const v = viewMcpServer(server({ state: "disconnected" }));
+ expect(v.badge).toBe("neutral");
+ expect(v.statusLabel).toBe("Disconnected");
+ expect(v.busy).toBe(false);
+ expect(v.error).toBeNull();
+ });
+
+ it("error → error badge + surfaces the reason (with a fallback)", () => {
+ const withReason = viewMcpServer(server({ state: "error", error: "ENOENT: npx" }));
+ expect(withReason.badge).toBe("error");
+ expect(withReason.busy).toBe(false);
+ expect(withReason.error).toBe("ENOENT: npx");
+
+ const noReason = viewMcpServer(server({ state: "error" }));
+ expect(noReason.error).toBe("Failed to connect");
+ });
+
+ it("passes through configSource when present", () => {
+ const v = viewMcpServer(server({ configSource: ".dispatch/mcp.json" }));
+ expect(v.configSource).toBe(".dispatch/mcp.json");
+ });
+
+ it("viewMcpServers maps a list preserving order", () => {
+ const views = viewMcpServers([server({ id: "a" }), server({ id: "b" })]);
+ expect(views.map((v) => v.id)).toEqual(["a", "b"]);
+ });
+});
+
+describe("summarizeMcpServers", () => {
+ it("empty list", () => {
+ expect(summarizeMcpServers([])).toBe("No MCP servers");
+ });
+
+ it("counts connected / connecting / disconnected / errors", () => {
+ expect(summarizeMcpServers([server({ state: "connected" })])).toBe("1 connected");
+ expect(
+ summarizeMcpServers([
+ server({ id: "a", state: "connected" }),
+ server({ id: "b", state: "error" }),
+ ]),
+ ).toBe("1 connected, 1 error");
+ expect(
+ summarizeMcpServers([
+ server({ id: "a", state: "connected" }),
+ server({ id: "b", state: "connecting" }),
+ server({ id: "c", state: "disconnected" }),
+ server({ id: "d", state: "error" }),
+ server({ id: "e", state: "error" }),
+ ]),
+ ).toBe("1 connected, 1 connecting, 1 disconnected, 2 errors");
+ });
+
+ it("lists only non-zero buckets", () => {
+ expect(summarizeMcpServers([server({ state: "disconnected" })])).toBe("1 disconnected");
+ expect(summarizeMcpServers([server({ id: "a", state: "connecting" })])).toBe("1 connecting");
+ });
+});
diff --git a/src/features/mcp/logic/view-model.ts b/src/features/mcp/logic/view-model.ts
new file mode 100644
index 0000000..fdff78a
--- /dev/null
+++ b/src/features/mcp/logic/view-model.ts
@@ -0,0 +1,110 @@
+import type { McpServerInfo, McpServerState } from "@dispatch/transport-contract";
+
+/**
+ * Pure core for the mcp feature — zero DOM, zero effects, zero Svelte.
+ *
+ * The mcp feature exposes the live status of the MCP (Model Context Protocol)
+ * servers configured for a conversation's working directory, fetched from
+ * `GET /conversations/:id/mcp`. This module holds the pure logic: the mapping
+ * of a backend `McpServerState` to a display badge + label, and a one-line
+ * server summary. The effect (the HTTP get MCP status) is INJECTED via the
+ * `LoadMcpStatus` port below; the composition root implements it.
+ */
+
+// ── Injected port (consumer-defines-port; the composition root adapts the
+// store's HTTP call to this shape). ──────────────────────────────────────────
+
+/** Outcome of `GET /conversations/:id/mcp`; `null` when no real conversation is focused. */
+export type McpStatusResult =
+ | { readonly ok: true; readonly cwd: string | null; readonly servers: readonly McpServerInfo[] }
+ | { readonly ok: false; readonly error: string };
+
+export type LoadMcpStatus = () => Promise<McpStatusResult | null>;
+
+// ── MCP server status → display view ───────────────────────────────────────────
+
+export type Badge = "success" | "warning" | "error" | "neutral";
+
+export interface McpServerView {
+ readonly id: string;
+ readonly state: McpServerState;
+ readonly statusLabel: string;
+ readonly badge: Badge;
+ /** True while the state is transient (show a spinner). */
+ readonly busy: boolean;
+ /** The error reason when `state === "error"`, else null. */
+ readonly error: string | null;
+ /** Number of tools discovered from this server. */
+ readonly toolCount: number;
+ /** Which config source the server was resolved from, else null. */
+ readonly configSource: string | null;
+}
+
+/**
+ * Map a server's state to a display label + badge severity + busy flag. Mirrors
+ * the LSP status visual treatment: `connected` → success, `connecting` (the
+ * transient state, analogous to LSP's `starting`) → warning + spinner, `error`
+ * → error, and `disconnected` (a stable idle state) → neutral.
+ */
+export function viewMcpServer(server: McpServerInfo): McpServerView {
+ let statusLabel: string;
+ let badge: Badge;
+ let busy = false;
+ switch (server.state) {
+ case "connected":
+ statusLabel = "Connected";
+ badge = "success";
+ break;
+ case "connecting":
+ statusLabel = "Connecting…";
+ badge = "warning";
+ busy = true;
+ break;
+ case "disconnected":
+ statusLabel = "Disconnected";
+ badge = "neutral";
+ break;
+ case "error":
+ statusLabel = "Error";
+ badge = "error";
+ break;
+ }
+ return {
+ id: server.id,
+ state: server.state,
+ statusLabel,
+ badge,
+ busy,
+ error: server.state === "error" ? (server.error ?? "Failed to connect") : null,
+ toolCount: server.toolCount,
+ configSource: server.configSource ?? null,
+ };
+}
+
+export function viewMcpServers(servers: readonly McpServerInfo[]): readonly McpServerView[] {
+ return servers.map(viewMcpServer);
+}
+
+/**
+ * A short one-line summary, e.g. "2 connected" / "1 connected, 1 connecting,
+ * 1 error". Only non-zero buckets are listed.
+ */
+export function summarizeMcpServers(servers: readonly McpServerInfo[]): string {
+ if (servers.length === 0) return "No MCP servers";
+ let connected = 0;
+ let connecting = 0;
+ let disconnected = 0;
+ let errored = 0;
+ for (const s of servers) {
+ if (s.state === "connected") connected++;
+ else if (s.state === "error") errored++;
+ else if (s.state === "connecting") connecting++;
+ else disconnected++;
+ }
+ const parts: string[] = [];
+ if (connected > 0) parts.push(`${connected} connected`);
+ if (connecting > 0) parts.push(`${connecting} connecting`);
+ if (disconnected > 0) parts.push(`${disconnected} disconnected`);
+ if (errored > 0) parts.push(`${errored} error${errored === 1 ? "" : "s"}`);
+ return parts.join(", ");
+}
diff --git a/src/features/mcp/ui/McpStatusView.svelte b/src/features/mcp/ui/McpStatusView.svelte
new file mode 100644
index 0000000..ad51496
--- /dev/null
+++ b/src/features/mcp/ui/McpStatusView.svelte
@@ -0,0 +1,133 @@
+<script lang="ts">
+ import { untrack } from "svelte";
+ import {
+ type Badge,
+ type LoadMcpStatus,
+ type McpServerView,
+ summarizeMcpServers,
+ viewMcpServers,
+ } from "../logic/view-model";
+
+ let {
+ cwd,
+ canView,
+ load,
+ }: {
+ /** The active conversation's cwd — the trigger to (re)load when it changes. */
+ cwd: string | null;
+ /** Whether a real conversation is focused. */
+ canView: boolean;
+ load: LoadMcpStatus;
+ } = $props();
+
+ const badgeClass: Record<Badge, string> = {
+ success: "badge-success",
+ warning: "badge-warning",
+ error: "badge-error",
+ neutral: "badge-ghost",
+ };
+
+ let servers = $state<readonly McpServerView[]>([]);
+ let loading = $state(false);
+ let error = $state<string | null>(null);
+ let loadedCwd = $state<string | null>(null);
+ let hasLoaded = $state(false);
+ let summary = $state("");
+
+ async function refresh() {
+ if (!canView) return;
+ loading = true;
+ error = null;
+ const result = await load();
+ loading = false;
+ if (result === null) return;
+ hasLoaded = true;
+ if (result.ok) {
+ servers = viewMcpServers(result.servers);
+ summary = summarizeMcpServers(result.servers);
+ loadedCwd = result.cwd;
+ } else {
+ error = result.error;
+ }
+ }
+
+ // (Re)load on mount and whenever the conversation's cwd changes. The MCP GET
+ // lazily spawns/connects servers, so we avoid a redundant fetch when `cwd`
+ // resolves to the value we already loaded for.
+ $effect(() => {
+ const target = cwd;
+ const can = canView;
+ untrack(() => {
+ if (!can) return;
+ if (!hasLoaded || target !== loadedCwd) void refresh();
+ });
+ });
+</script>
+
+<div class="flex flex-col gap-2">
+ <div class="flex items-center justify-between gap-2">
+ <span class="text-xs opacity-70">
+ {#if loading}
+ Resolving…
+ {:else if hasLoaded && loadedCwd !== null}
+ {summary}
+ {:else}
+ MCP servers
+ {/if}
+ </span>
+ <button
+ type="button"
+ class="btn btn-ghost btn-xs"
+ disabled={!canView || loading}
+ onclick={() => refresh()}
+ aria-label="Refresh MCP server status"
+ >
+ {#if loading}
+ <span class="loading loading-spinner loading-xs"></span>
+ {:else}
+ Refresh
+ {/if}
+ </button>
+ </div>
+
+ {#if !canView}
+ <p class="text-xs opacity-60">Open or start a conversation to see its MCP servers.</p>
+ {:else if error}
+ <p class="text-xs text-error">{error}</p>
+ {:else if hasLoaded && loadedCwd === null}
+ <p class="text-xs opacity-60">
+ Set a working directory in the Model panel to enable MCP servers.
+ </p>
+ {:else if hasLoaded && servers.length === 0 && !loading}
+ <p class="text-xs opacity-60">No MCP servers configured for this directory.</p>
+ {:else}
+ <ul class="flex flex-col gap-2">
+ {#each servers as server (server.id)}
+ <li class="flex flex-col gap-1 rounded-box bg-base-200 p-2 text-sm">
+ <div class="flex items-center justify-between gap-2">
+ <span class="font-medium font-mono">{server.id}</span>
+ <span class="badge badge-sm {badgeClass[server.badge]} gap-1">
+ {#if server.busy}
+ <span class="loading loading-spinner loading-xs"></span>
+ {/if}
+ {server.statusLabel}
+ </span>
+ </div>
+ <div class="flex items-center justify-between gap-2 text-xs opacity-60">
+ {#if server.configSource}
+ <span class="font-mono" title="Config source">{server.configSource}</span>
+ {:else}
+ <span></span>
+ {/if}
+ <span title="Discovered tools"
+ >{server.toolCount} tool{server.toolCount === 1 ? "" : "s"}</span
+ >
+ </div>
+ {#if server.error}
+ <span class="font-mono text-xs text-error">{server.error}</span>
+ {/if}
+ </li>
+ {/each}
+ </ul>
+ {/if}
+</div>
diff --git a/src/features/settings/index.ts b/src/features/settings/index.ts
new file mode 100644
index 0000000..3942e97
--- /dev/null
+++ b/src/features/settings/index.ts
@@ -0,0 +1,9 @@
+export type { ChatLimitParse, ChatLimitSaveResult, SaveChatLimit } from "./logic/view-model";
+export { chatLimitChanged, parseChatLimit } from "./logic/view-model";
+export { default as ChatLimitField } from "./ui/ChatLimitField.svelte";
+
+/** Public module manifest — aggregated by the shell's "Loaded Modules" view. */
+export const manifest = {
+ name: "settings",
+ description: "FE-local settings (chat limit)",
+} as const;
diff --git a/src/features/settings/logic/view-model.test.ts b/src/features/settings/logic/view-model.test.ts
new file mode 100644
index 0000000..93c4786
--- /dev/null
+++ b/src/features/settings/logic/view-model.test.ts
@@ -0,0 +1,61 @@
+import { describe, expect, it } from "vitest";
+import { MAX_CHAT_LIMIT, MIN_CHAT_LIMIT } from "../../../core/chunks";
+import { chatLimitChanged, parseChatLimit } from "./view-model";
+
+describe("parseChatLimit", () => {
+ it("parses a plain integer", () => {
+ expect(parseChatLimit("256")).toEqual({ ok: true, value: 256 });
+ expect(parseChatLimit("100")).toEqual({ ok: true, value: 100 });
+ });
+
+ it("trims surrounding whitespace", () => {
+ expect(parseChatLimit(" 50 ")).toEqual({ ok: true, value: 50 });
+ });
+
+ it("floors a decimal", () => {
+ expect(parseChatLimit("100.9")).toEqual({ ok: true, value: 100 });
+ });
+
+ it("clamps below the floor to MIN_CHAT_LIMIT", () => {
+ expect(parseChatLimit("0")).toEqual({ ok: true, value: MIN_CHAT_LIMIT });
+ expect(parseChatLimit("-5")).toEqual({ ok: true, value: MIN_CHAT_LIMIT });
+ expect(parseChatLimit("5")).toEqual({ ok: true, value: MIN_CHAT_LIMIT });
+ });
+
+ it("clamps above the ceiling to MAX_CHAT_LIMIT", () => {
+ expect(parseChatLimit("99999999")).toEqual({ ok: true, value: MAX_CHAT_LIMIT });
+ });
+
+ it("rejects an empty string", () => {
+ expect(parseChatLimit("")).toEqual({ ok: false, error: expect.any(String) });
+ expect(parseChatLimit(" ")).toEqual({ ok: false, error: expect.any(String) });
+ });
+
+ it("rejects non-numeric input", () => {
+ expect(parseChatLimit("abc")).toEqual({ ok: false, error: expect.any(String) });
+ expect(parseChatLimit("twelve")).toEqual({ ok: false, error: expect.any(String) });
+ });
+});
+
+describe("chatLimitChanged", () => {
+ it("is false when the typed value normalizes to the current limit", () => {
+ expect(chatLimitChanged("256", 256)).toBe(false);
+ });
+
+ it("is true when the typed value differs", () => {
+ expect(chatLimitChanged("100", 256)).toBe(true);
+ expect(chatLimitChanged("256", 100)).toBe(true);
+ });
+
+ it("is false for empty / invalid input (nothing submittable)", () => {
+ expect(chatLimitChanged("", 256)).toBe(false);
+ expect(chatLimitChanged("abc", 256)).toBe(false);
+ });
+
+ it("is false when the typed value clamps to the current limit", () => {
+ // 5 clamps to MIN (10); current is already 10 → no change.
+ expect(chatLimitChanged("5", MIN_CHAT_LIMIT)).toBe(false);
+ // A huge value clamps to MAX; current is already MAX → no change.
+ expect(chatLimitChanged("99999999", MAX_CHAT_LIMIT)).toBe(false);
+ });
+});
diff --git a/src/features/settings/logic/view-model.ts b/src/features/settings/logic/view-model.ts
new file mode 100644
index 0000000..73f6d17
--- /dev/null
+++ b/src/features/settings/logic/view-model.ts
@@ -0,0 +1,60 @@
+import { normalizeChatLimit } from "../../../core/chunks";
+
+/**
+ * Pure core for the settings feature — zero DOM, zero effects, zero Svelte.
+ *
+ * The settings feature exposes FE-local, user-tunable settings. Currently the
+ * chat limit (max loaded chunks per conversation; the policy lives in
+ * `core/chunks/trim.ts`): this module is the view-model seam that parses +
+ * validates a typed value into a normalized limit, so the UI can disable submit
+ * and show an error on garbage input. The bound constants + normalization are
+ * OWNED by `core/chunks` (the single source of truth); this module never
+ * redefines them.
+ */
+
+// ── Injected port (consumer-defines-port; the composition root adapts the
+// store's localStorage persistence to this shape). ──────────────────────────
+
+/** Outcome of persisting a chat-limit setting. */
+export type ChatLimitSaveResult =
+ | { readonly ok: true; readonly chatLimit: number }
+ | { readonly ok: false; readonly error: string };
+
+export type SaveChatLimit = (value: number) => Promise<ChatLimitSaveResult>;
+
+// ── chat-limit parse / validate ───────────────────────────────────────────────
+
+/** Result of parsing a typed chat-limit string. */
+export type ChatLimitParse =
+ | { readonly ok: true; readonly value: number }
+ | { readonly ok: false; readonly error: string };
+
+/**
+ * Parse a typed chat-limit string into a normalized limit (floored + clamped to
+ * [MIN_CHAT_LIMIT, MAX_CHAT_LIMIT] via `normalizeChatLimit`). Empty or
+ * non-numeric input is an ERROR (so the UI can disable submit + message), NOT a
+ * silent default — the default only applies at boot for an unset key, never
+ * from user typing.
+ */
+export function parseChatLimit(raw: string): ChatLimitParse {
+ const trimmed = raw.trim();
+ if (trimmed.length === 0) {
+ return { ok: false, error: "Enter a number." };
+ }
+ const n = Number(trimmed);
+ if (!Number.isFinite(n)) {
+ return { ok: false, error: "Must be a number." };
+ }
+ return { ok: true, value: normalizeChatLimit(n) };
+}
+
+/**
+ * Whether saving `typed` would change the `current` chat limit. A no-op save
+ * (empty/invalid, or equal after normalization) should be disabled. This is the
+ * dirty-check for the input — it must NOT mutate or clamp, only compare.
+ */
+export function chatLimitChanged(typed: string, current: number): boolean {
+ const parsed = parseChatLimit(typed);
+ if (!parsed.ok) return false;
+ return parsed.value !== current;
+}
diff --git a/src/features/settings/ui/ChatLimitField.svelte b/src/features/settings/ui/ChatLimitField.svelte
new file mode 100644
index 0000000..502212f
--- /dev/null
+++ b/src/features/settings/ui/ChatLimitField.svelte
@@ -0,0 +1,104 @@
+<script lang="ts">
+ import { untrack } from "svelte";
+ import { MAX_CHAT_LIMIT, MIN_CHAT_LIMIT } from "../../../core/chunks";
+ import { chatLimitChanged, parseChatLimit, type SaveChatLimit } from "../logic/view-model";
+
+ let {
+ chatLimit,
+ save,
+ }: {
+ /** The persisted chat limit (max loaded chunks per conversation). */
+ chatLimit: number;
+ save: SaveChatLimit;
+ } = $props();
+
+ // Seed from the prop; the $effect below re-seeds on external changes (a live
+ // apply from elsewhere) but only while the field is untouched, so an in-flight
+ // change can't clobber what the user typed.
+ let value = $state("");
+ let lastSeed = $state("");
+ let saving = $state(false);
+ let error = $state<string | null>(null);
+ let justSaved = $state(false);
+ let savedValue = $state<number | null>(null);
+
+ $effect(() => {
+ const incoming = String(chatLimit);
+ untrack(() => {
+ if (value === lastSeed) value = incoming;
+ lastSeed = incoming;
+ });
+ });
+
+ const dirty = $derived(chatLimitChanged(value, chatLimit));
+
+ async function handleSave() {
+ if (saving || !dirty) return;
+ const parsed = parseChatLimit(value);
+ if (!parsed.ok) {
+ error = parsed.error;
+ return;
+ }
+ saving = true;
+ error = null;
+ justSaved = false;
+ const result = await save(parsed.value);
+ saving = false;
+ if (result.ok) {
+ justSaved = true;
+ savedValue = result.chatLimit;
+ // Reflect the clamped / persisted value back into the input immediately
+ // (the prop will also re-assert it via the effect above).
+ value = String(result.chatLimit);
+ lastSeed = value;
+ } else {
+ error = result.error;
+ }
+ }
+
+ function onInput() {
+ justSaved = false;
+ error = null;
+ }
+</script>
+
+<div class="flex flex-col gap-1">
+ <span class="text-xs font-semibold uppercase opacity-60">Chat limit</span>
+ <div class="flex items-center gap-2">
+ <input
+ type="text"
+ inputmode="numeric"
+ class="input input-bordered input-sm w-full font-mono text-xs"
+ placeholder={String(chatLimit)}
+ bind:value
+ disabled={saving}
+ oninput={onInput}
+ onkeydown={(e) => {
+ if (e.key === "Enter") handleSave();
+ }}
+ aria-label="Chat limit"
+ />
+ <button
+ type="button"
+ class="btn btn-primary btn-sm"
+ disabled={saving || !dirty}
+ onclick={handleSave}
+ >
+ {#if saving}
+ <span class="loading loading-spinner loading-xs"></span>
+ {:else}
+ Set
+ {/if}
+ </button>
+ </div>
+ {#if error}
+ <p class="text-xs text-error">{error}</p>
+ {:else if justSaved && !dirty}
+ <p class="text-xs text-success">Saved{savedValue !== null ? `: ${savedValue}.` : "."}</p>
+ {:else}
+ <p class="text-xs opacity-50">
+ Max loaded chunks per conversation ({MIN_CHAT_LIMIT}–{MAX_CHAT_LIMIT}). Lowering it unloads
+ older history; raise it and use "Show earlier" to page back in.
+ </p>
+ {/if}
+</div>
diff --git a/src/features/settings/ui/ChatLimitField.test.ts b/src/features/settings/ui/ChatLimitField.test.ts
new file mode 100644
index 0000000..8f8da25
--- /dev/null
+++ b/src/features/settings/ui/ChatLimitField.test.ts
@@ -0,0 +1,89 @@
+import { render, screen } from "@testing-library/svelte";
+import userEvent from "@testing-library/user-event";
+import { describe, expect, it } from "vitest";
+import type { ChatLimitSaveResult } from "../logic/view-model";
+import ChatLimitField from "./ChatLimitField.svelte";
+
+// A fake save that resolves ok with the value it was given.
+function fakeSave(): {
+ saves: number[];
+ last: number | null;
+ impl: (value: number) => Promise<ChatLimitSaveResult>;
+} {
+ const saves: number[] = [];
+ return {
+ saves,
+ last: null,
+ impl: async (value: number) => {
+ saves.push(value);
+ return { ok: true, chatLimit: value };
+ },
+ };
+}
+
+describe("ChatLimitField", () => {
+ it("seeds the input from the persisted limit and disables Set while unchanged", () => {
+ render(ChatLimitField, { props: { chatLimit: 256, save: fakeSave().impl } });
+ expect(screen.getByLabelText("Chat limit")).toHaveValue("256");
+ expect(screen.getByRole("button", { name: "Set" })).toBeDisabled();
+ });
+
+ it("enables Set when the typed value differs (regression: number-binding coercion)", async () => {
+ const user = userEvent.setup();
+ const save = fakeSave();
+ render(ChatLimitField, { props: { chatLimit: 256, save: save.impl } });
+
+ const input = screen.getByLabelText("Chat limit");
+ await user.clear(input);
+ await user.type(input, "10");
+
+ expect(screen.getByRole("button", { name: "Set" })).toBeEnabled();
+ });
+
+ it("keeps Set disabled for non-numeric input", async () => {
+ const user = userEvent.setup();
+ const save = fakeSave();
+ render(ChatLimitField, { props: { chatLimit: 256, save: save.impl } });
+
+ const input = screen.getByLabelText("Chat limit");
+ await user.clear(input);
+ await user.type(input, "abc");
+
+ expect(screen.getByRole("button", { name: "Set" })).toBeDisabled();
+ });
+
+ it("clicking Set calls save with the parsed value and shows the confirmation", async () => {
+ const user = userEvent.setup();
+ const save = fakeSave();
+ const { rerender } = render(ChatLimitField, {
+ props: { chatLimit: 256, save: save.impl },
+ });
+
+ const input = screen.getByLabelText("Chat limit");
+ await user.clear(input);
+ await user.type(input, "50");
+ await user.click(screen.getByRole("button", { name: "Set" }));
+
+ expect(save.saves).toEqual([50]);
+ // In the real app the reactive `chatLimit` prop updates to the saved value
+ // (the store sets it synchronously), which clears `dirty` and reveals the
+ // "Saved" badge. Rerender simulates that propagation.
+ rerender({ chatLimit: 50, save: save.impl });
+ expect(screen.getByText(/Saved/i)).toBeInTheDocument();
+ });
+
+ it("clamps a below-floor value when saving", async () => {
+ const user = userEvent.setup();
+ const save = fakeSave();
+ render(ChatLimitField, { props: { chatLimit: 256, save: save.impl } });
+
+ const input = screen.getByLabelText("Chat limit");
+ await user.clear(input);
+ await user.type(input, "5"); // clamps to MIN (10)
+ await user.click(screen.getByRole("button", { name: "Set" }));
+
+ // The save port receives the clamped value (the view-model clamps before save).
+ expect(save.saves).toEqual([10]);
+ expect(input).toHaveValue("10");
+ });
+});
diff --git a/src/features/smart-scroll/index.ts b/src/features/smart-scroll/index.ts
new file mode 100644
index 0000000..73b11d6
--- /dev/null
+++ b/src/features/smart-scroll/index.ts
@@ -0,0 +1,25 @@
+export type {
+ ScrollCommand,
+ ScrollGeometry,
+ SmartScrollResult,
+ SmartScrollState,
+} from "./logic/smart-scroll";
+export {
+ createSmartScrollState,
+ isNearBottom,
+ NEAR_BOTTOM_THRESHOLD,
+ onContentChange,
+ onReset,
+ onResume,
+ onScroll,
+} from "./logic/smart-scroll";
+export type { SmartScrollController } from "./ui/controller.svelte";
+export { createSmartScrollController } from "./ui/controller.svelte";
+export { default as ScrollToBottom } from "./ui/ScrollToBottom.svelte";
+
+/** Public module manifest — aggregated by the shell's "Loaded Modules" view. */
+export const manifest = {
+ name: "smart-scroll",
+ description:
+ "Keeps the transcript pinned to the bottom while it streams, unless the reader scrolls up",
+} as const;
diff --git a/src/features/smart-scroll/logic/smart-scroll.test.ts b/src/features/smart-scroll/logic/smart-scroll.test.ts
new file mode 100644
index 0000000..94ba1d7
--- /dev/null
+++ b/src/features/smart-scroll/logic/smart-scroll.test.ts
@@ -0,0 +1,103 @@
+import { describe, expect, it } from "vitest";
+import {
+ createSmartScrollState,
+ isNearBottom,
+ NEAR_BOTTOM_THRESHOLD,
+ onContentChange,
+ onReset,
+ onResume,
+ onScroll,
+ type ScrollGeometry,
+} from "./smart-scroll";
+
+// A viewport 100px tall over 1000px of content: scrollTop 900 == pinned to bottom.
+const atBottom: ScrollGeometry = { scrollTop: 900, scrollHeight: 1000, clientHeight: 100 };
+const nearBottom: ScrollGeometry = {
+ scrollTop: 900 - NEAR_BOTTOM_THRESHOLD,
+ scrollHeight: 1000,
+ clientHeight: 100,
+};
+const scrolledUp: ScrollGeometry = { scrollTop: 200, scrollHeight: 1000, clientHeight: 100 };
+
+describe("isNearBottom", () => {
+ it("is true exactly at the bottom", () => {
+ expect(isNearBottom(atBottom)).toBe(true);
+ });
+
+ it("is true within the threshold of the bottom", () => {
+ expect(isNearBottom(nearBottom)).toBe(true);
+ });
+
+ it("is false just beyond the threshold", () => {
+ expect(
+ isNearBottom({
+ scrollTop: 900 - NEAR_BOTTOM_THRESHOLD - 1,
+ scrollHeight: 1000,
+ clientHeight: 100,
+ }),
+ ).toBe(false);
+ });
+
+ it("is false when scrolled well up", () => {
+ expect(isNearBottom(scrolledUp)).toBe(false);
+ });
+
+ it("honours a custom threshold", () => {
+ const geom: ScrollGeometry = { scrollTop: 800, scrollHeight: 1000, clientHeight: 100 };
+ expect(isNearBottom(geom, 50)).toBe(false);
+ expect(isNearBottom(geom, 150)).toBe(true);
+ });
+});
+
+describe("smart-scroll reducer", () => {
+ it("starts stuck and hides the button", () => {
+ const s = createSmartScrollState();
+ expect(s.stuck).toBe(true);
+ });
+
+ it("onScroll up unsticks and shows the button, with no command", () => {
+ const r = onScroll(createSmartScrollState(), scrolledUp);
+ expect(r.state.stuck).toBe(false);
+ expect(r.showButton).toBe(true);
+ expect(r.command).toBeNull();
+ });
+
+ it("onScroll back to the bottom re-sticks and hides the button", () => {
+ const up = onScroll(createSmartScrollState(), scrolledUp).state;
+ const r = onScroll(up, atBottom);
+ expect(r.state.stuck).toBe(true);
+ expect(r.showButton).toBe(false);
+ expect(r.command).toBeNull();
+ });
+
+ it("onContentChange while stuck emits a NON-animated scroll (keep up with the stream)", () => {
+ const r = onContentChange(createSmartScrollState(), atBottom);
+ expect(r.command).toEqual({ kind: "scroll-to-bottom", animate: false });
+ expect(r.state.stuck).toBe(true);
+ });
+
+ it("onContentChange while unstuck emits NO command (leave the reader in place)", () => {
+ const up = onScroll(createSmartScrollState(), scrolledUp).state;
+ const r = onContentChange(up, scrolledUp);
+ expect(r.command).toBeNull();
+ expect(r.state.stuck).toBe(false);
+ expect(r.showButton).toBe(true);
+ });
+
+ it("onResume re-sticks and emits an ANIMATED scroll", () => {
+ const up = onScroll(createSmartScrollState(), scrolledUp).state;
+ const r = onResume(up);
+ expect(r.state.stuck).toBe(true);
+ expect(r.showButton).toBe(false);
+ expect(r.command).toEqual({ kind: "scroll-to-bottom", animate: true });
+ });
+
+ it("onReset returns to stuck and snaps (non-animated) to the bottom", () => {
+ const up = onScroll(createSmartScrollState(), scrolledUp).state;
+ const r = onReset();
+ void up;
+ expect(r.state.stuck).toBe(true);
+ expect(r.command).toEqual({ kind: "scroll-to-bottom", animate: false });
+ expect(r.showButton).toBe(false);
+ });
+});
diff --git a/src/features/smart-scroll/logic/smart-scroll.ts b/src/features/smart-scroll/logic/smart-scroll.ts
new file mode 100644
index 0000000..4a04812
--- /dev/null
+++ b/src/features/smart-scroll/logic/smart-scroll.ts
@@ -0,0 +1,93 @@
+// Pure smart-scroll reducer — "stick the transcript to the bottom while it grows,
+// unless the user has scrolled up". Zero DOM, zero Svelte: it takes scroll
+// GEOMETRY snapshots in and returns the next state plus an optional scroll
+// COMMAND for the shell to execute. The injected shell (the Svelte action) reads
+// the geometry off a real element and runs the commands.
+
+/** A snapshot of a scroll container's vertical geometry (in CSS pixels). */
+export interface ScrollGeometry {
+ /** Current scroll offset from the top. */
+ readonly scrollTop: number;
+ /** Total scrollable content height. */
+ readonly scrollHeight: number;
+ /** Visible viewport height. */
+ readonly clientHeight: number;
+}
+
+/** Distance (px) from the bottom within which we still consider the view "at bottom". */
+export const NEAR_BOTTOM_THRESHOLD = 64;
+
+/** True when the viewport is within `threshold` px of the content's bottom edge. */
+export function isNearBottom(
+ geom: ScrollGeometry,
+ threshold: number = NEAR_BOTTOM_THRESHOLD,
+): boolean {
+ return geom.scrollHeight - geom.scrollTop - geom.clientHeight <= threshold;
+}
+
+/** A scroll the shell should perform on the real element. */
+export interface ScrollCommand {
+ readonly kind: "scroll-to-bottom";
+ /** Smooth-scroll (a deliberate resume) vs. jump (keeping up with a stream). */
+ readonly animate: boolean;
+}
+
+export interface SmartScrollState {
+ /**
+ * Whether the view is currently following the bottom. While `stuck`, new
+ * content keeps the view pinned to the bottom; once the user scrolls up it
+ * goes false and stays false until they return to the bottom (or resume).
+ */
+ readonly stuck: boolean;
+}
+
+/** A reducer step's result: the next state, an optional command, and whether to show the button. */
+export interface SmartScrollResult {
+ readonly state: SmartScrollState;
+ readonly command: ScrollCommand | null;
+ /** Show the "scroll to bottom" affordance exactly when not stuck. */
+ readonly showButton: boolean;
+}
+
+/** Initial state — start stuck so the first content snaps to the bottom. */
+export function createSmartScrollState(): SmartScrollState {
+ return { stuck: true };
+}
+
+function result(state: SmartScrollState, command: ScrollCommand | null): SmartScrollResult {
+ return { state, command, showButton: !state.stuck };
+}
+
+/**
+ * The user scrolled (or the viewport resized). Re-derive `stuck` purely from
+ * geometry: near the bottom ⇒ stuck (follow), otherwise unstuck. Never emits a
+ * command — reacting to the user's own scroll with a scroll would fight them.
+ */
+export function onScroll(_state: SmartScrollState, geom: ScrollGeometry): SmartScrollResult {
+ return result({ stuck: isNearBottom(geom) }, null);
+}
+
+/**
+ * Content changed (a streamed delta, a new message, history loaded). If we're
+ * stuck, emit a non-animated scroll to keep up; otherwise leave the user where
+ * they are. State is unchanged — content growth alone never flips `stuck`.
+ */
+export function onContentChange(state: SmartScrollState, _geom: ScrollGeometry): SmartScrollResult {
+ return result(state, state.stuck ? { kind: "scroll-to-bottom", animate: false } : null);
+}
+
+/**
+ * The user asked to return to the bottom (clicked the button). Force-stick and
+ * emit an animated scroll.
+ */
+export function onResume(_state: SmartScrollState): SmartScrollResult {
+ return result({ stuck: true }, { kind: "scroll-to-bottom", animate: true });
+}
+
+/**
+ * The transcript context changed entirely (e.g. a conversation/tab switch).
+ * Reset to stuck and snap (non-animated) to the bottom of the new content.
+ */
+export function onReset(): SmartScrollResult {
+ return result(createSmartScrollState(), { kind: "scroll-to-bottom", animate: false });
+}
diff --git a/src/features/smart-scroll/ui/ScrollToBottom.svelte b/src/features/smart-scroll/ui/ScrollToBottom.svelte
new file mode 100644
index 0000000..38ec1f5
--- /dev/null
+++ b/src/features/smart-scroll/ui/ScrollToBottom.svelte
@@ -0,0 +1,36 @@
+<script lang="ts">
+ // Thin affordance: a floating "scroll to bottom" button shown while the reader
+ // has scrolled up. Holds no logic — `show` and `onResume` come from the
+ // smart-scroll controller.
+ let {
+ show,
+ onResume,
+ }: {
+ show: boolean;
+ onResume: () => void;
+ } = $props();
+</script>
+
+<button
+ type="button"
+ class="btn btn-circle btn-sm absolute bottom-4 left-1/2 -translate-x-1/2 shadow-lg transition-opacity duration-200"
+ class:opacity-0={!show}
+ class:pointer-events-none={!show}
+ class:opacity-100={show}
+ onclick={onResume}
+ aria-label="Scroll to bottom"
+ aria-hidden={!show}
+ tabindex={show ? 0 : -1}
+>
+ <svg
+ xmlns="http://www.w3.org/2000/svg"
+ viewBox="0 0 24 24"
+ fill="none"
+ stroke="currentColor"
+ stroke-width="2.5"
+ class="size-4"
+ aria-hidden="true"
+ >
+ <path stroke-linecap="round" stroke-linejoin="round" d="M19 9l-7 7-7-7" />
+ </svg>
+</button>
diff --git a/src/features/smart-scroll/ui/controller.svelte.ts b/src/features/smart-scroll/ui/controller.svelte.ts
new file mode 100644
index 0000000..fee6561
--- /dev/null
+++ b/src/features/smart-scroll/ui/controller.svelte.ts
@@ -0,0 +1,140 @@
+// Injected shell for smart-scroll: binds a real scrollable element to the pure
+// reducer (logic/smart-scroll). It owns the reactive `showButton` flag (a thin
+// rune wrapper over the reducer state), runs the scroll COMMANDS the reducer
+// emits against the element, and listens at the outermost edges (the element's
+// `scroll`/`scrollend` events + a ResizeObserver on the content). No ambient
+// state: the consumer instantiates ONE controller per scroll region and disposes
+// it on unmount.
+
+import {
+ createSmartScrollState,
+ onContentChange,
+ onReset,
+ onResume,
+ onScroll,
+ type ScrollCommand,
+ type ScrollGeometry,
+ type SmartScrollResult,
+ type SmartScrollState,
+} from "../logic/smart-scroll";
+
+export interface SmartScrollController {
+ /** Reactive: show the "scroll to bottom" affordance (the user has scrolled up). */
+ readonly showButton: boolean;
+ /**
+ * Non-reactive point-in-time query: is the view stuck to the bottom right now?
+ * For imperative callers (e.g. the chat-limit unload gate) that poll at event
+ * time rather than subscribing — reads the reducer state, not a rune.
+ */
+ isAtBottom(): boolean;
+ /**
+ * Attach to the scroll container; returns a teardown to call on unmount.
+ * Pass the inner CONTENT element to also follow height changes that aren't a
+ * transcript update (async markdown/highlight, image loads, a collapse toggling,
+ * viewport reflow) via a ResizeObserver.
+ */
+ attach(el: HTMLElement, content?: HTMLElement): () => void;
+ /**
+ * Notify that the transcript content changed (a streamed delta / new message).
+ * While stuck, keeps the view pinned to the bottom.
+ */
+ contentChanged(): void;
+ /** Reset for a new transcript context (e.g. conversation switch): snap to bottom. */
+ reset(): void;
+ /** The user clicked the affordance: re-stick and smooth-scroll to the bottom. */
+ resume(): void;
+}
+
+function geometryOf(el: HTMLElement): ScrollGeometry {
+ return {
+ scrollTop: el.scrollTop,
+ scrollHeight: el.scrollHeight,
+ clientHeight: el.clientHeight,
+ };
+}
+
+export function createSmartScrollController(): SmartScrollController {
+ let state: SmartScrollState = createSmartScrollState();
+ let showButton = $state(false);
+ let el: HTMLElement | null = null;
+ // True while WE drive a programmatic scroll, so the resulting `scroll` event
+ // doesn't get misread as the user scrolling up. Cleared on `scrollend`.
+ let selfScrolling = false;
+
+ function run(command: ScrollCommand | null): void {
+ if (!command || !el) return;
+ selfScrolling = true;
+ el.scrollTo({
+ top: el.scrollHeight,
+ behavior: command.animate ? "smooth" : "instant",
+ });
+ }
+
+ function apply(r: SmartScrollResult): void {
+ state = r.state;
+ showButton = r.showButton;
+ run(r.command);
+ }
+
+ function handleScroll(): void {
+ if (!el || selfScrolling) return;
+ apply(onScroll(state, geometryOf(el)));
+ }
+
+ function handleScrollEnd(): void {
+ selfScrolling = false;
+ }
+
+ return {
+ get showButton(): boolean {
+ return showButton;
+ },
+
+ isAtBottom(): boolean {
+ return state.stuck;
+ },
+
+ attach(node: HTMLElement, content?: HTMLElement): () => void {
+ el = node;
+ node.addEventListener("scroll", handleScroll, { passive: true });
+ node.addEventListener("scrollend", handleScrollEnd);
+
+ // A ResizeObserver keeps the view pinned through height changes that are
+ // NOT a transcript update — async markdown/syntax-highlight, image loads, a
+ // collapse toggling, font swaps, viewport reflow — which a content-count
+ // signal can't see. Observe the CONTENT (it grows) and the container (it
+ // changes on viewport resize). Routed through `onContentChange`, so it only
+ // scrolls while stuck and never fights the reader. The `selfScrolling` guard
+ // (and the fact that scrolling doesn't resize content) prevents any loop.
+ let ro: ResizeObserver | null = null;
+ if (typeof ResizeObserver !== "undefined") {
+ ro = new ResizeObserver(() => {
+ if (!el || selfScrolling) return;
+ apply(onContentChange(state, geometryOf(el)));
+ });
+ if (content) ro.observe(content);
+ ro.observe(node);
+ }
+
+ return () => {
+ node.removeEventListener("scroll", handleScroll);
+ node.removeEventListener("scrollend", handleScrollEnd);
+ ro?.disconnect();
+ if (el === node) el = null;
+ };
+ },
+
+ contentChanged(): void {
+ if (!el) return;
+ apply(onContentChange(state, geometryOf(el)));
+ },
+
+ reset(): void {
+ apply(onReset());
+ },
+
+ resume(): void {
+ apply(onResume(state));
+ },
+ };
+}
diff --git a/src/features/smart-scroll/ui/controller.test.ts b/src/features/smart-scroll/ui/controller.test.ts
new file mode 100644
index 0000000..906cc91
--- /dev/null
+++ b/src/features/smart-scroll/ui/controller.test.ts
@@ -0,0 +1,172 @@
+import { describe, expect, it, vi } from "vitest";
+import { createSmartScrollController } from "./controller.svelte";
+
+// A minimal fake of the only DOM surface the controller touches: scroll
+// geometry, scrollTo, and add/removeEventListener for "scroll"/"scrollend".
+// Faking this outermost edge is the sanctioned mock (no internal modules mocked).
+function createFakeScrollEl(opts?: { scrollHeight?: number; clientHeight?: number }) {
+ const listeners = new Map<string, Set<EventListener>>();
+ const el = {
+ scrollTop: 0,
+ scrollHeight: opts?.scrollHeight ?? 1000,
+ clientHeight: opts?.clientHeight ?? 100,
+ scrollTo: vi.fn((arg: ScrollToOptions) => {
+ // Emulate the browser: jump scrollTop, then (for "instant") fire scrollend.
+ el.scrollTop = (arg.top ?? 0) - 0;
+ if (arg.behavior !== "smooth") {
+ fire("scroll");
+ fire("scrollend");
+ }
+ }),
+ addEventListener: (type: string, fn: EventListener) => {
+ if (!listeners.has(type)) listeners.set(type, new Set());
+ listeners.get(type)?.add(fn);
+ },
+ removeEventListener: (type: string, fn: EventListener) => {
+ listeners.get(type)?.delete(fn);
+ },
+ };
+ function fire(type: string): void {
+ for (const fn of listeners.get(type) ?? []) fn(new Event(type));
+ }
+ // Simulate the USER scrolling to a given offset (fires scroll, not self-driven).
+ function userScrollTo(top: number): void {
+ el.scrollTop = top;
+ fire("scroll");
+ }
+ return {
+ el: el as unknown as HTMLElement,
+ scrollTo: el.scrollTo,
+ fire,
+ userScrollTo,
+ listenerCount: () => listeners,
+ };
+}
+
+describe("smart-scroll controller", () => {
+ it("starts with the button hidden", () => {
+ const c = createSmartScrollController();
+ expect(c.showButton).toBe(false);
+ });
+
+ it("contentChanged while stuck scrolls to the bottom instantly", () => {
+ const c = createSmartScrollController();
+ const fake = createFakeScrollEl();
+ c.attach(fake.el);
+ c.contentChanged();
+ expect(fake.scrollTo).toHaveBeenCalledWith({
+ top: 1000,
+ behavior: "instant",
+ });
+ expect(c.showButton).toBe(false);
+ });
+
+ it("a user scroll up shows the button and stops auto-following", () => {
+ const c = createSmartScrollController();
+ const fake = createFakeScrollEl();
+ c.attach(fake.el);
+ fake.userScrollTo(200); // far from the bottom
+ expect(c.showButton).toBe(true);
+
+ const scrollTo = fake.scrollTo;
+ scrollTo.mockClear();
+ c.contentChanged(); // streaming more content...
+ expect(scrollTo).not.toHaveBeenCalled(); // ...must NOT yank the reader down
+ expect(c.showButton).toBe(true);
+ });
+
+ it("self-driven scrolls are not misread as the user scrolling up", () => {
+ const c = createSmartScrollController();
+ const fake = createFakeScrollEl();
+ c.attach(fake.el);
+ // contentChanged drives an instant scrollTo, whose synthetic scroll event
+ // must NOT flip us to unstuck (selfScrolling guard).
+ c.contentChanged();
+ expect(c.showButton).toBe(false);
+ });
+
+ it("resume re-sticks and smooth-scrolls to the bottom", () => {
+ const c = createSmartScrollController();
+ const fake = createFakeScrollEl();
+ c.attach(fake.el);
+ fake.userScrollTo(200);
+ expect(c.showButton).toBe(true);
+
+ c.resume();
+ expect(fake.scrollTo).toHaveBeenCalledWith({
+ top: 1000,
+ behavior: "smooth",
+ });
+ expect(c.showButton).toBe(false);
+ });
+
+ it("reset snaps to the bottom and hides the button", () => {
+ const c = createSmartScrollController();
+ const fake = createFakeScrollEl();
+ c.attach(fake.el);
+ fake.userScrollTo(200);
+ expect(c.showButton).toBe(true);
+ c.reset();
+ expect(fake.scrollTo).toHaveBeenCalledWith({
+ top: 1000,
+ behavior: "instant",
+ });
+ expect(c.showButton).toBe(false);
+ });
+
+ it("observes content via a ResizeObserver: follows growth while stuck, not while unstuck", () => {
+ const holder: { cb: ResizeObserverCallback | null } = { cb: null };
+ const observed: unknown[] = [];
+ const disconnect = vi.fn();
+ class FakeResizeObserver {
+ constructor(cb: ResizeObserverCallback) {
+ holder.cb = cb;
+ }
+ observe(target: Element): void {
+ observed.push(target);
+ }
+ unobserve(): void {}
+ disconnect = disconnect;
+ }
+ vi.stubGlobal("ResizeObserver", FakeResizeObserver);
+ try {
+ const c = createSmartScrollController();
+ const fake = createFakeScrollEl();
+ const content = { id: "content" } as unknown as HTMLElement;
+ const teardown = c.attach(fake.el, content);
+
+ // Observes both the content (it grows) and the scroll container (viewport resize).
+ expect(observed).toContain(content);
+ expect(observed).toContain(fake.el);
+
+ // Stuck → a resize keeps us pinned to the bottom.
+ fake.scrollTo.mockClear();
+ holder.cb?.([], {} as ResizeObserver);
+ expect(fake.scrollTo).toHaveBeenCalledWith({ top: 1000, behavior: "instant" });
+
+ // Reader scrolls up → a later resize must NOT yank them down.
+ fake.userScrollTo(200);
+ fake.scrollTo.mockClear();
+ holder.cb?.([], {} as ResizeObserver);
+ expect(fake.scrollTo).not.toHaveBeenCalled();
+
+ // Teardown disconnects the observer.
+ teardown();
+ expect(disconnect).toHaveBeenCalled();
+ } finally {
+ vi.unstubAllGlobals();
+ }
+ });
+
+ it("attach returns a teardown that removes both listeners", () => {
+ const c = createSmartScrollController();
+ const fake = createFakeScrollEl();
+ const teardown = c.attach(fake.el);
+ const before = fake.listenerCount();
+ expect(before.get("scroll")?.size).toBe(1);
+ expect(before.get("scrollend")?.size).toBe(1);
+ teardown();
+ expect(before.get("scroll")?.size).toBe(0);
+ expect(before.get("scrollend")?.size).toBe(0);
+ });
+});
diff --git a/src/features/surface-host/index.ts b/src/features/surface-host/index.ts
index afa3127..1e21e3d 100644
--- a/src/features/surface-host/index.ts
+++ b/src/features/surface-host/index.ts
@@ -1,3 +1,9 @@
export { buildInvoke, planSurface } from "./logic/plan";
export type { FieldView, SurfaceRenderPlan } from "./logic/types";
export { default as SurfaceView } from "./ui/SurfaceView.svelte";
+
+/** Public module manifest — aggregated by the shell's "Loaded Modules" view. */
+export const manifest = {
+ name: "surface-host",
+ description: "Generic renderer for backend-declared surfaces",
+} as const;
diff --git a/src/features/surface-host/logic/message-queue.test.ts b/src/features/surface-host/logic/message-queue.test.ts
new file mode 100644
index 0000000..8d55eb7
--- /dev/null
+++ b/src/features/surface-host/logic/message-queue.test.ts
@@ -0,0 +1,48 @@
+import type { QueuedMessage } from "@dispatch/wire";
+import { describe, expect, it } from "vitest";
+import { parseMessageQueuePayload } from "./message-queue";
+
+const msg = (id: string, text: string, queuedAt = 1_700_000_000_000): QueuedMessage => ({
+ id,
+ text,
+ queuedAt,
+});
+
+describe("parseMessageQueuePayload", () => {
+ it("parses a well-formed payload with messages", () => {
+ const data = parseMessageQueuePayload({
+ messages: [msg("m1", "steer left"), msg("m2", "actually, go right")],
+ });
+ expect(data).toEqual({
+ messages: [msg("m1", "steer left"), msg("m2", "actually, go right")],
+ });
+ });
+
+ it("parses an empty-messages payload (queue is empty)", () => {
+ expect(parseMessageQueuePayload({ messages: [] })).toEqual({ messages: [] });
+ });
+
+ it("preserves message order", () => {
+ const data = parseMessageQueuePayload({
+ messages: [msg("a", "first"), msg("b", "second"), msg("c", "third")],
+ });
+ expect(data?.messages.map((m) => m.id)).toEqual(["a", "b", "c"]);
+ });
+
+ it.each([
+ ["null", null],
+ ["a number", 7],
+ ["a string", "nope"],
+ ["missing messages key", { foo: [] }],
+ ["messages not an array", { messages: "x" }],
+ ["entry not an object", { messages: ["x"] }],
+ ["entry missing id", { messages: [{ text: "x", queuedAt: 1 }] }],
+ ["entry with non-string id", { messages: [{ id: 1, text: "x", queuedAt: 1 }] }],
+ ["entry missing text", { messages: [{ id: "m1", queuedAt: 1 }] }],
+ ["entry with non-string text", { messages: [{ id: "m1", text: 1, queuedAt: 1 }] }],
+ ["entry missing queuedAt", { messages: [{ id: "m1", text: "x" }] }],
+ ["entry with non-finite queuedAt", { messages: [msg("m1", "x", Number.NaN)] }],
+ ])("returns null for invalid payload: %s", (_label, payload) => {
+ expect(parseMessageQueuePayload(payload)).toBeNull();
+ });
+});
diff --git a/src/features/surface-host/logic/message-queue.ts b/src/features/surface-host/logic/message-queue.ts
new file mode 100644
index 0000000..79707a5
--- /dev/null
+++ b/src/features/surface-host/logic/message-queue.ts
@@ -0,0 +1,45 @@
+import type { QueuedMessage } from "@dispatch/wire";
+
+/**
+ * Pure parser for the `rendererId: "message-queue"` custom-field payload.
+ *
+ * The message-queue extension's per-conversation surface emits ONE `custom`
+ * field with `rendererId: "message-queue"` and `payload: QueuePayload`
+ * (`{ messages: QueuedMessage[] }` — the current queue snapshot). This parser
+ * validates the untyped `payload: unknown` at the network seam so a
+ * hostile/partial payload can never crash the renderer (graceful skip → null).
+ *
+ * Empty `messages` is a valid, parseable state (the queue is empty — nothing to
+ * render); the caller hides the panel. Null is returned only for a malformed
+ * payload shape.
+ */
+export interface MessageQueueData {
+ readonly messages: readonly QueuedMessage[];
+}
+
+function isQueuedMessage(v: unknown): v is QueuedMessage {
+ if (typeof v !== "object" || v === null) return false;
+ const o = v as Record<string, unknown>;
+ return (
+ typeof o.id === "string" &&
+ typeof o.text === "string" &&
+ typeof o.queuedAt === "number" &&
+ Number.isFinite(o.queuedAt)
+ );
+}
+
+export function parseMessageQueuePayload(payload: unknown): MessageQueueData | null {
+ if (typeof payload !== "object" || payload === null) return null;
+ const obj = payload as Record<string, unknown>;
+ const raw = obj.messages;
+ if (!Array.isArray(raw)) return null;
+ const messages: QueuedMessage[] = [];
+ for (const entry of raw) {
+ if (!isQueuedMessage(entry)) return null;
+ messages.push(entry);
+ }
+ return { messages };
+}
+
+/** The `rendererId` the message-queue extension's `custom` surface field uses. */
+export const MESSAGE_QUEUE_RENDERER_ID = "message-queue";
diff --git a/src/features/surface-host/logic/plan.test.ts b/src/features/surface-host/logic/plan.test.ts
index 50d6f11..9c8a34d 100644
--- a/src/features/surface-host/logic/plan.test.ts
+++ b/src/features/surface-host/logic/plan.test.ts
@@ -1,161 +1,250 @@
import type { SurfaceField, SurfaceSpec } from "@dispatch/ui-contract";
import { describe, expect, it } from "vitest";
-import { buildInvoke, planSurface } from "./plan";
+import { buildInvoke, groupRenderFields, planSurface } from "./plan";
+import type { FieldView } from "./types";
const makeSpec = (...fields: SurfaceField[]): SurfaceSpec => ({
- id: "test-surface",
- region: "test",
- title: "Test Surface",
- fields,
+ id: "test-surface",
+ region: "test",
+ title: "Test Surface",
+ fields,
});
describe("planSurface", () => {
- it("maps a toggle field to a ToggleFieldView", () => {
- const plan = planSurface(
- makeSpec({ kind: "toggle", label: "Dark mode", value: true, action: { actionId: "dm" } }),
- );
- expect(plan.fields).toEqual([
- { kind: "toggle", label: "Dark mode", value: true, action: { actionId: "dm" } },
- ]);
- });
-
- it("maps a progress field to a ProgressFieldView", () => {
- const plan = planSurface(makeSpec({ kind: "progress", label: "Loading", value: 0.42 }));
- expect(plan.fields).toEqual([{ kind: "progress", label: "Loading", value: 0.42 }]);
- });
-
- it("maps a selector field to a SelectorFieldView", () => {
- const plan = planSurface(
- makeSpec({
- kind: "selector",
- label: "Model",
- value: "gpt-4",
- options: [
- { value: "gpt-4", label: "GPT-4" },
- { value: "gpt-3.5", label: "GPT-3.5" },
- ],
- action: { actionId: "set-model" },
- }),
- );
- expect(plan.fields).toEqual([
- {
- kind: "selector",
- label: "Model",
- value: "gpt-4",
- options: [
- { value: "gpt-4", label: "GPT-4" },
- { value: "gpt-3.5", label: "GPT-3.5" },
- ],
- action: { actionId: "set-model" },
- },
- ]);
- });
-
- it("maps a stat field to a StatFieldView", () => {
- const plan = planSurface(makeSpec({ kind: "stat", label: "Tokens", value: "1,234" }));
- expect(plan.fields).toEqual([{ kind: "stat", label: "Tokens", value: "1,234" }]);
- });
-
- it("maps a button field to a ButtonFieldView", () => {
- const plan = planSurface(
- makeSpec({ kind: "button", label: "Retry", action: { actionId: "retry" } }),
- );
- expect(plan.fields).toEqual([
- { kind: "button", label: "Retry", action: { actionId: "retry" } },
- ]);
- });
-
- it("preserves field order", () => {
- const plan = planSurface(
- makeSpec(
- { kind: "stat", label: "A", value: "1" },
- { kind: "toggle", label: "B", value: false, action: { actionId: "b" } },
- { kind: "progress", label: "C", value: 0.5 },
- { kind: "button", label: "D", action: { actionId: "d" } },
- ),
- );
- expect(plan.fields.map((f) => f.label)).toEqual(["A", "B", "C", "D"]);
- });
-
- it("drops unknown field kinds gracefully", () => {
- const plan = planSurface(
- makeSpec({ kind: "stat", label: "Known", value: "ok" }, {
- kind: "future-kind" as "stat",
- label: "Unknown",
- value: "?",
- } as SurfaceField),
- );
- expect(plan.fields).toHaveLength(1);
- expect(plan.fields[0]?.label).toBe("Known");
- });
-
- it("drops custom fields (no renderer registered)", () => {
- const plan = planSurface(
- makeSpec(
- { kind: "stat", label: "Before", value: "1" },
- { kind: "custom", rendererId: "chart", payload: { data: [1, 2, 3] } },
- { kind: "stat", label: "After", value: "2" },
- ),
- );
- expect(plan.fields).toHaveLength(2);
- expect(plan.fields.map((f) => f.label)).toEqual(["Before", "After"]);
- });
-
- it("returns empty fields for an empty spec", () => {
- const plan = planSurface(makeSpec());
- expect(plan.fields).toEqual([]);
- });
-
- it("drops all fields when all are custom", () => {
- const plan = planSurface(
- makeSpec(
- { kind: "custom", rendererId: "x", payload: null },
- { kind: "custom", rendererId: "y", payload: 42 },
- ),
- );
- expect(plan.fields).toEqual([]);
- });
+ it("maps a toggle field to a ToggleFieldView", () => {
+ const plan = planSurface(
+ makeSpec({ kind: "toggle", label: "Dark mode", value: true, action: { actionId: "dm" } }),
+ );
+ expect(plan.fields).toEqual([
+ { kind: "toggle", label: "Dark mode", value: true, action: { actionId: "dm" } },
+ ]);
+ });
+
+ it("maps a progress field to a ProgressFieldView", () => {
+ const plan = planSurface(makeSpec({ kind: "progress", label: "Loading", value: 0.42 }));
+ expect(plan.fields).toEqual([{ kind: "progress", label: "Loading", value: 0.42 }]);
+ });
+
+ it("maps a selector field to a SelectorFieldView", () => {
+ const plan = planSurface(
+ makeSpec({
+ kind: "selector",
+ label: "Model",
+ value: "gpt-4",
+ options: [
+ { value: "gpt-4", label: "GPT-4" },
+ { value: "gpt-3.5", label: "GPT-3.5" },
+ ],
+ action: { actionId: "set-model" },
+ }),
+ );
+ expect(plan.fields).toEqual([
+ {
+ kind: "selector",
+ label: "Model",
+ value: "gpt-4",
+ options: [
+ { value: "gpt-4", label: "GPT-4" },
+ { value: "gpt-3.5", label: "GPT-3.5" },
+ ],
+ action: { actionId: "set-model" },
+ },
+ ]);
+ });
+
+ it("maps a stat field to a StatFieldView", () => {
+ const plan = planSurface(makeSpec({ kind: "stat", label: "Tokens", value: "1,234" }));
+ expect(plan.fields).toEqual([{ kind: "stat", label: "Tokens", value: "1,234" }]);
+ });
+
+ it("maps a number field to a NumberFieldView, carrying optional hints", () => {
+ const plan = planSurface(
+ makeSpec({
+ kind: "number",
+ label: "Interval",
+ value: 240,
+ min: 1,
+ step: 1,
+ unit: "s",
+ action: { actionId: "cache-warming/set-interval" },
+ }),
+ );
+ expect(plan.fields).toEqual([
+ {
+ kind: "number",
+ label: "Interval",
+ value: 240,
+ min: 1,
+ step: 1,
+ unit: "s",
+ action: { actionId: "cache-warming/set-interval" },
+ },
+ ]);
+ });
+
+ it("omits absent number hints (no max key when undefined)", () => {
+ const plan = planSurface(
+ makeSpec({
+ kind: "number",
+ label: "Interval",
+ value: 240,
+ min: 1,
+ action: { actionId: "set" },
+ }),
+ );
+ const field = plan.fields[0];
+ expect(field).not.toHaveProperty("max");
+ expect(field).not.toHaveProperty("step");
+ expect(field).not.toHaveProperty("unit");
+ });
+
+ it("maps a button field to a ButtonFieldView", () => {
+ const plan = planSurface(
+ makeSpec({ kind: "button", label: "Retry", action: { actionId: "retry" } }),
+ );
+ expect(plan.fields).toEqual([
+ { kind: "button", label: "Retry", action: { actionId: "retry" } },
+ ]);
+ });
+
+ it("preserves field order", () => {
+ const plan = planSurface(
+ makeSpec(
+ { kind: "stat", label: "A", value: "1" },
+ { kind: "toggle", label: "B", value: false, action: { actionId: "b" } },
+ { kind: "progress", label: "C", value: 0.5 },
+ { kind: "button", label: "D", action: { actionId: "d" } },
+ ),
+ );
+ expect(plan.fields.map((f) => ("label" in f ? f.label : null))).toEqual(["A", "B", "C", "D"]);
+ });
+
+ it("drops unknown field kinds gracefully", () => {
+ const plan = planSurface(
+ makeSpec({ kind: "stat", label: "Known", value: "ok" }, {
+ kind: "future-kind" as "stat",
+ label: "Unknown",
+ value: "?",
+ } as SurfaceField),
+ );
+ expect(plan.fields).toHaveLength(1);
+ const first = plan.fields[0];
+ expect(first && "label" in first ? first.label : null).toBe("Known");
+ });
+
+ it("carries custom fields through verbatim, preserving order", () => {
+ const plan = planSurface(
+ makeSpec(
+ { kind: "stat", label: "Before", value: "1" },
+ { kind: "custom", rendererId: "chart", payload: { data: [1, 2, 3] } },
+ { kind: "stat", label: "After", value: "2" },
+ ),
+ );
+ expect(plan.fields).toHaveLength(3);
+ expect(plan.fields[1]).toEqual({
+ kind: "custom",
+ rendererId: "chart",
+ payload: { data: [1, 2, 3] },
+ });
+ });
+
+ it("returns empty fields for an empty spec", () => {
+ const plan = planSurface(makeSpec());
+ expect(plan.fields).toEqual([]);
+ });
+
+ it("keeps every custom field (render-time decides whether to show each)", () => {
+ const plan = planSurface(
+ makeSpec(
+ { kind: "custom", rendererId: "x", payload: null },
+ { kind: "custom", rendererId: "y", payload: 42 },
+ ),
+ );
+ expect(plan.fields.map((f) => f.kind)).toEqual(["custom", "custom"]);
+ });
+});
+
+describe("groupRenderFields", () => {
+ const stat = (label: string, value: string): FieldView => ({ kind: "stat", label, value });
+ const toggle = (label: string): FieldView => ({
+ kind: "toggle",
+ label,
+ value: false,
+ action: { actionId: label },
+ });
+
+ it("coalesces consecutive stats into a single stats group", () => {
+ const groups = groupRenderFields([stat("a", "1"), stat("b", "2"), stat("c", "3")]);
+ expect(groups).toHaveLength(1);
+ expect(groups[0]).toEqual({
+ type: "stats",
+ stats: [
+ { kind: "stat", label: "a", value: "1" },
+ { kind: "stat", label: "b", value: "2" },
+ { kind: "stat", label: "c", value: "3" },
+ ],
+ });
+ });
+
+ it("keeps non-stat fields as standalone groups and preserves order", () => {
+ const groups = groupRenderFields([stat("a", "1"), toggle("t"), stat("b", "2")]);
+ expect(groups.map((g) => g.type)).toEqual(["stats", "field", "stats"]);
+ const first = groups[0];
+ const last = groups[2];
+ if (first?.type !== "stats" || last?.type !== "stats") throw new Error("bad grouping");
+ expect(first.stats.map((s) => s.label)).toEqual(["a"]);
+ expect(last.stats.map((s) => s.label)).toEqual(["b"]);
+ });
+
+ it("starts a new stats run after an interrupting field", () => {
+ const groups = groupRenderFields([stat("a", "1"), stat("b", "2"), toggle("t"), stat("c", "3")]);
+ expect(groups.map((g) => g.type)).toEqual(["stats", "field", "stats"]);
+ });
+
+ it("returns no groups for an empty field list", () => {
+ expect(groupRenderFields([])).toEqual([]);
+ });
});
describe("buildInvoke", () => {
- it("builds an invoke message for a toggle field", () => {
- const field = { kind: "toggle" as const, label: "T", value: false, action: { actionId: "t" } };
- const msg = buildInvoke("s1", field, true);
- expect(msg).toEqual({ type: "invoke", surfaceId: "s1", actionId: "t", payload: true });
- });
-
- it("builds an invoke message for a selector field", () => {
- const field = {
- kind: "selector" as const,
- label: "S",
- value: "a",
- options: [],
- action: { actionId: "sel" },
- };
- const msg = buildInvoke("s1", field, "b");
- expect(msg).toEqual({ type: "invoke", surfaceId: "s1", actionId: "sel", payload: "b" });
- });
-
- it("builds an invoke message without payload for a button field", () => {
- const field = { kind: "button" as const, label: "B", action: { actionId: "btn" } };
- const msg = buildInvoke("s1", field);
- expect(msg).toEqual({ type: "invoke", surfaceId: "s1", actionId: "btn" });
- });
-
- it("omits payload key when value is undefined", () => {
- const field = { kind: "button" as const, label: "B", action: { actionId: "btn" } };
- const msg = buildInvoke("s1", field, undefined);
- expect(msg).not.toHaveProperty("payload");
- });
-
- it("uses the field's actionId, not a surface-level id", () => {
- const field = {
- kind: "toggle" as const,
- label: "X",
- value: true,
- action: { actionId: "custom-action-123" },
- };
- const msg = buildInvoke("surf", field, false);
- expect(msg.actionId).toBe("custom-action-123");
- });
+ it("builds an invoke message for a toggle field", () => {
+ const field = { kind: "toggle" as const, label: "T", value: false, action: { actionId: "t" } };
+ const msg = buildInvoke("s1", field, true);
+ expect(msg).toEqual({ type: "invoke", surfaceId: "s1", actionId: "t", payload: true });
+ });
+
+ it("builds an invoke message for a selector field", () => {
+ const field = {
+ kind: "selector" as const,
+ label: "S",
+ value: "a",
+ options: [],
+ action: { actionId: "sel" },
+ };
+ const msg = buildInvoke("s1", field, "b");
+ expect(msg).toEqual({ type: "invoke", surfaceId: "s1", actionId: "sel", payload: "b" });
+ });
+
+ it("builds an invoke message without payload for a button field", () => {
+ const field = { kind: "button" as const, label: "B", action: { actionId: "btn" } };
+ const msg = buildInvoke("s1", field);
+ expect(msg).toEqual({ type: "invoke", surfaceId: "s1", actionId: "btn" });
+ });
+
+ it("omits payload key when value is undefined", () => {
+ const field = { kind: "button" as const, label: "B", action: { actionId: "btn" } };
+ const msg = buildInvoke("s1", field, undefined);
+ expect(msg).not.toHaveProperty("payload");
+ });
+
+ it("uses the field's actionId, not a surface-level id", () => {
+ const field = {
+ kind: "toggle" as const,
+ label: "X",
+ value: true,
+ action: { actionId: "custom-action-123" },
+ };
+ const msg = buildInvoke("surf", field, false);
+ expect(msg.actionId).toBe("custom-action-123");
+ });
});
diff --git a/src/features/surface-host/logic/plan.ts b/src/features/surface-host/logic/plan.ts
index 5b4530b..c8f82b9 100644
--- a/src/features/surface-host/logic/plan.ts
+++ b/src/features/surface-host/logic/plan.ts
@@ -1,59 +1,123 @@
import type { InvokeMessage, SurfaceSpec } from "@dispatch/ui-contract";
-import type { FieldView, SurfaceRenderPlan } from "./types";
+import type {
+ FieldView,
+ NumberFieldView,
+ RenderGroup,
+ StatFieldView,
+ SurfaceRenderPlan,
+} from "./types";
-const KNOWN_KINDS = new Set(["toggle", "progress", "selector", "stat", "button"]);
+const KNOWN_KINDS = new Set([
+ "toggle",
+ "progress",
+ "selector",
+ "stat",
+ "number",
+ "button",
+ "custom",
+]);
/**
* Validate and normalise a SurfaceSpec into a renderable plan.
- * Keeps known field kinds in order; drops unknown kinds and `custom` fields
- * (no renderer registry yet — graceful skip, never throw).
+ * Keeps known field kinds in order (including `custom`, carried through verbatim
+ * for the renderer to dispatch on `rendererId`); drops unknown kinds — graceful
+ * skip, never throw. Whether a `custom` field actually renders is a RENDER-time
+ * decision (unknown `rendererId` → skipped there), not a planning one.
*/
export function planSurface(spec: SurfaceSpec): SurfaceRenderPlan {
- const fields: FieldView[] = [];
- for (const field of spec.fields) {
- if (!KNOWN_KINDS.has(field.kind)) continue;
- switch (field.kind) {
- case "toggle":
- fields.push({
- kind: "toggle",
- label: field.label,
- value: field.value,
- action: field.action,
- });
- break;
- case "progress":
- fields.push({
- kind: "progress",
- label: field.label,
- value: field.value,
- });
- break;
- case "selector":
- fields.push({
- kind: "selector",
- label: field.label,
- value: field.value,
- options: field.options,
- action: field.action,
- });
- break;
- case "stat":
- fields.push({
- kind: "stat",
- label: field.label,
- value: field.value,
- });
- break;
- case "button":
- fields.push({
- kind: "button",
- label: field.label,
- action: field.action,
- });
- break;
- }
- }
- return { fields };
+ const fields: FieldView[] = [];
+ for (const field of spec.fields) {
+ if (!KNOWN_KINDS.has(field.kind)) continue;
+ switch (field.kind) {
+ case "toggle":
+ fields.push({
+ kind: "toggle",
+ label: field.label,
+ value: field.value,
+ action: field.action,
+ });
+ break;
+ case "progress":
+ fields.push({
+ kind: "progress",
+ label: field.label,
+ value: field.value,
+ });
+ break;
+ case "selector":
+ fields.push({
+ kind: "selector",
+ label: field.label,
+ value: field.value,
+ options: field.options,
+ action: field.action,
+ });
+ break;
+ case "stat":
+ fields.push({
+ kind: "stat",
+ label: field.label,
+ value: field.value,
+ });
+ break;
+ case "number": {
+ // Carry optional hints only when present (exactOptionalPropertyTypes).
+ const view: NumberFieldView = {
+ kind: "number",
+ label: field.label,
+ value: field.value,
+ action: field.action,
+ ...(field.min !== undefined ? { min: field.min } : {}),
+ ...(field.max !== undefined ? { max: field.max } : {}),
+ ...(field.step !== undefined ? { step: field.step } : {}),
+ ...(field.unit !== undefined ? { unit: field.unit } : {}),
+ };
+ fields.push(view);
+ break;
+ }
+ case "button":
+ fields.push({
+ kind: "button",
+ label: field.label,
+ action: field.action,
+ });
+ break;
+ case "custom":
+ fields.push({
+ kind: "custom",
+ rendererId: field.rendererId,
+ payload: field.payload,
+ });
+ break;
+ }
+ }
+ return { fields };
+}
+
+/**
+ * Coalesce a field list into render groups: maximal runs of consecutive `stat`
+ * fields become one `stats` group (rendered as a single aligned table), every
+ * other field stays a standalone `field` group. Order is preserved. Pure.
+ */
+export function groupRenderFields(fields: readonly FieldView[]): RenderGroup[] {
+ const groups: RenderGroup[] = [];
+ let run: StatFieldView[] = [];
+ const flush = (): void => {
+ if (run.length > 0) {
+ groups.push({ type: "stats", stats: run });
+ run = [];
+ }
+ };
+ for (const field of fields) {
+ if (field.kind === "stat") {
+ run.push(field);
+ } else {
+ flush();
+ groups.push({ type: "field", field });
+ }
+ }
+ flush();
+ return groups;
}
/**
@@ -62,13 +126,13 @@ export function planSurface(spec: SurfaceSpec): SurfaceRenderPlan {
* for button the payload is omitted.
*/
export function buildInvoke(
- surfaceId: string,
- field: Extract<FieldView, { action: unknown }>,
- value?: unknown,
+ surfaceId: string,
+ field: Extract<FieldView, { action: unknown }>,
+ value?: unknown,
): InvokeMessage {
- const base = { type: "invoke" as const, surfaceId, actionId: field.action.actionId };
- if (value !== undefined) {
- return { ...base, payload: value };
- }
- return base;
+ const base = { type: "invoke" as const, surfaceId, actionId: field.action.actionId };
+ if (value !== undefined) {
+ return { ...base, payload: value };
+ }
+ return base;
}
diff --git a/src/features/surface-host/logic/table.test.ts b/src/features/surface-host/logic/table.test.ts
new file mode 100644
index 0000000..6fb558a
--- /dev/null
+++ b/src/features/surface-host/logic/table.test.ts
@@ -0,0 +1,47 @@
+import { describe, expect, it } from "vitest";
+import { parseTablePayload } from "./table";
+
+describe("parseTablePayload", () => {
+ it("parses a well-formed table payload", () => {
+ const data = parseTablePayload({
+ columns: ["Name", "Version"],
+ rows: [
+ ["alpha", "1.0"],
+ ["beta", "2.3"],
+ ],
+ });
+ expect(data).toEqual({
+ columns: ["Name", "Version"],
+ rows: [
+ ["alpha", "1.0"],
+ ["beta", "2.3"],
+ ],
+ });
+ });
+
+ it("coerces numeric and boolean cells to strings", () => {
+ const data = parseTablePayload({
+ columns: ["k", "n", "b"],
+ rows: [["x", 42, true]],
+ });
+ expect(data?.rows[0]).toEqual(["x", "42", "true"]);
+ });
+
+ it("accepts an empty rows array", () => {
+ expect(parseTablePayload({ columns: ["A"], rows: [] })).toEqual({ columns: ["A"], rows: [] });
+ });
+
+ it.each([
+ ["null", null],
+ ["a number", 7],
+ ["a string", "nope"],
+ ["missing columns", { rows: [] }],
+ ["missing rows", { columns: ["A"] }],
+ ["non-string column", { columns: [1], rows: [] }],
+ ["row that is not an array", { columns: ["A"], rows: ["x"] }],
+ ["cell of unsupported type", { columns: ["A"], rows: [[{ nested: true }]] }],
+ ["non-finite numeric cell", { columns: ["A"], rows: [[Number.NaN]] }],
+ ])("returns null for invalid payload: %s", (_label, payload) => {
+ expect(parseTablePayload(payload)).toBeNull();
+ });
+});
diff --git a/src/features/surface-host/logic/table.ts b/src/features/surface-host/logic/table.ts
new file mode 100644
index 0000000..5d2b831
--- /dev/null
+++ b/src/features/surface-host/logic/table.ts
@@ -0,0 +1,54 @@
+/**
+ * Pure parser for the `rendererId: "table"` custom-field payload.
+ *
+ * This is the FRONTEND-side renderer contract for tabular custom fields: a
+ * backend that wants a table emits a `custom` field with `rendererId: "table"`
+ * and a payload of `{ columns: string[]; rows: (string|number)[][] }`. Cells are
+ * coerced to strings. Anything that does not match the shape returns `null`, so
+ * the renderer gracefully skips it (never throws on hostile/partial data).
+ */
+
+export interface TableData {
+ readonly columns: readonly string[];
+ readonly rows: readonly (readonly string[])[];
+}
+
+function isStringArray(v: unknown): v is unknown[] {
+ return Array.isArray(v);
+}
+
+function coerceCell(v: unknown): string | null {
+ if (typeof v === "string") return v;
+ if (typeof v === "number" && Number.isFinite(v)) return String(v);
+ if (typeof v === "boolean") return String(v);
+ return null;
+}
+
+export function parseTablePayload(payload: unknown): TableData | null {
+ if (typeof payload !== "object" || payload === null) return null;
+ const obj = payload as Record<string, unknown>;
+
+ const rawColumns = obj.columns;
+ const rawRows = obj.rows;
+ if (!isStringArray(rawColumns) || !isStringArray(rawRows)) return null;
+
+ const columns: string[] = [];
+ for (const col of rawColumns) {
+ if (typeof col !== "string") return null;
+ columns.push(col);
+ }
+
+ const rows: string[][] = [];
+ for (const row of rawRows) {
+ if (!Array.isArray(row)) return null;
+ const cells: string[] = [];
+ for (const cell of row) {
+ const c = coerceCell(cell);
+ if (c === null) return null;
+ cells.push(c);
+ }
+ rows.push(cells);
+ }
+
+ return { columns, rows };
+}
diff --git a/src/features/surface-host/logic/todo.test.ts b/src/features/surface-host/logic/todo.test.ts
new file mode 100644
index 0000000..66ff036
--- /dev/null
+++ b/src/features/surface-host/logic/todo.test.ts
@@ -0,0 +1,67 @@
+import { describe, expect, it } from "vitest";
+import { parseTodoPayload, type TodoItem } from "./todo";
+
+const item = (content: string, status: TodoItem["status"] = "pending"): TodoItem => ({
+ content,
+ status,
+});
+
+describe("parseTodoPayload", () => {
+ it("parses a well-formed payload with items", () => {
+ const data = parseTodoPayload({
+ todos: [
+ item("Write tests", "in_progress"),
+ item("Ship it", "pending"),
+ item("Read docs", "completed"),
+ ],
+ });
+ expect(data).toEqual({
+ todos: [
+ item("Write tests", "in_progress"),
+ item("Ship it", "pending"),
+ item("Read docs", "completed"),
+ ],
+ });
+ });
+
+ it("parses an empty-todos payload", () => {
+ expect(parseTodoPayload({ todos: [] })).toEqual({ todos: [] });
+ });
+
+ it("preserves item order", () => {
+ const data = parseTodoPayload({ todos: [item("a"), item("b"), item("c")] });
+ expect(data?.todos.map((t) => t.content)).toEqual(["a", "b", "c"]);
+ });
+
+ it("accepts all four status values", () => {
+ const data = parseTodoPayload({
+ todos: [
+ item("p", "pending"),
+ item("i", "in_progress"),
+ item("c", "completed"),
+ item("x", "cancelled"),
+ ],
+ });
+ expect(data?.todos.map((t) => t.status)).toEqual([
+ "pending",
+ "in_progress",
+ "completed",
+ "cancelled",
+ ]);
+ });
+
+ it.each([
+ ["null", null],
+ ["a number", 7],
+ ["a string", "nope"],
+ ["missing todos key", { foo: [] }],
+ ["todos not an array", { todos: "x" }],
+ ["entry not an object", { todos: ["x"] }],
+ ["entry missing content", { todos: [{ status: "pending" }] }],
+ ["entry with non-string content", { todos: [{ content: 1, status: "pending" }] }],
+ ["entry missing status", { todos: [{ content: "x" }] }],
+ ["entry with invalid status", { todos: [item("x", "done" as never)] }],
+ ])("returns null for invalid payload: %s", (_label, payload) => {
+ expect(parseTodoPayload(payload)).toBeNull();
+ });
+});
diff --git a/src/features/surface-host/logic/todo.ts b/src/features/surface-host/logic/todo.ts
new file mode 100644
index 0000000..8b8a5ef
--- /dev/null
+++ b/src/features/surface-host/logic/todo.ts
@@ -0,0 +1,49 @@
+/**
+ * Pure parser for the `rendererId: "todo"` custom-field payload.
+ *
+ * The `todo` backend extension maintains a per-conversation task list (written
+ * by the model via a `todo_write` tool) and exposes it as a read-only
+ * conversation-scoped surface with one `custom` field
+ * (`rendererId: "todo"`, `payload: TodoPayload`). This parser validates the
+ * untyped `payload: unknown` at the network seam so a hostile/partial payload
+ * can never crash the renderer (graceful skip → null).
+ *
+ * The `TodoItem` type is NOT in `@dispatch/wire` — it is defined by the `todo`
+ * extension and carried in the surface payload, so we define it here (the FE's
+ * rendering contract for the shape). Empty `todos` is a valid, parseable state
+ * (the model hasn't created a list / cleared it); the caller hides the panel.
+ */
+export type TodoStatus = "pending" | "in_progress" | "completed" | "cancelled";
+
+export interface TodoItem {
+ readonly content: string;
+ readonly status: TodoStatus;
+}
+
+export interface TodoData {
+ readonly todos: readonly TodoItem[];
+}
+
+const STATUSES = new Set<string>(["pending", "in_progress", "completed", "cancelled"]);
+
+function isTodoItem(v: unknown): v is TodoItem {
+ if (typeof v !== "object" || v === null) return false;
+ const o = v as Record<string, unknown>;
+ return typeof o.content === "string" && typeof o.status === "string" && STATUSES.has(o.status);
+}
+
+export function parseTodoPayload(payload: unknown): TodoData | null {
+ if (typeof payload !== "object" || payload === null) return null;
+ const obj = payload as Record<string, unknown>;
+ const raw = obj.todos;
+ if (!Array.isArray(raw)) return null;
+ const todos: TodoItem[] = [];
+ for (const entry of raw) {
+ if (!isTodoItem(entry)) return null;
+ todos.push(entry);
+ }
+ return { todos };
+}
+
+/** The `rendererId` the `todo` extension's `custom` surface field uses. */
+export const TODO_RENDERER_ID = "todo";
diff --git a/src/features/surface-host/logic/types.ts b/src/features/surface-host/logic/types.ts
index f24438a..11c222f 100644
--- a/src/features/surface-host/logic/types.ts
+++ b/src/features/surface-host/logic/types.ts
@@ -2,51 +2,89 @@ import type { ActionRef, SurfaceOption } from "@dispatch/ui-contract";
/** Normalised view-model for a toggle field. */
export interface ToggleFieldView {
- readonly kind: "toggle";
- readonly label: string;
- readonly value: boolean;
- readonly action: ActionRef;
+ readonly kind: "toggle";
+ readonly label: string;
+ readonly value: boolean;
+ readonly action: ActionRef;
}
/** Normalised view-model for a progress field. */
export interface ProgressFieldView {
- readonly kind: "progress";
- readonly label: string;
- readonly value: number;
+ readonly kind: "progress";
+ readonly label: string;
+ readonly value: number;
}
/** Normalised view-model for a selector field. */
export interface SelectorFieldView {
- readonly kind: "selector";
- readonly label: string;
- readonly value: string;
- readonly options: readonly SurfaceOption[];
- readonly action: ActionRef;
+ readonly kind: "selector";
+ readonly label: string;
+ readonly value: string;
+ readonly options: readonly SurfaceOption[];
+ readonly action: ActionRef;
}
/** Normalised view-model for a stat field. */
export interface StatFieldView {
- readonly kind: "stat";
- readonly label: string;
- readonly value: string;
+ readonly kind: "stat";
+ readonly label: string;
+ readonly value: string;
+}
+
+/**
+ * Normalised view-model for a number field — the free-value counterpart to
+ * selector. `min`/`max`/`step`/`unit` are optional semantic hints (absent when
+ * the spec omits them). The renderer posts the new number as the action payload.
+ */
+export interface NumberFieldView {
+ readonly kind: "number";
+ readonly label: string;
+ readonly value: number;
+ readonly min?: number;
+ readonly max?: number;
+ readonly step?: number;
+ readonly unit?: string;
+ readonly action: ActionRef;
}
/** Normalised view-model for a button field. */
export interface ButtonFieldView {
- readonly kind: "button";
- readonly label: string;
- readonly action: ActionRef;
+ readonly kind: "button";
+ readonly label: string;
+ readonly action: ActionRef;
+}
+
+/**
+ * Normalised view-model for a custom (escape-hatch) field. The plan carries it
+ * through verbatim; the renderer dispatches on `rendererId` (a renderer KIND,
+ * never a surface id) and gracefully skips ids it has no renderer for.
+ */
+export interface CustomFieldView {
+ readonly kind: "custom";
+ readonly rendererId: string;
+ readonly payload: unknown;
}
/** A normalised field view-model — one entry per renderable field kind. */
export type FieldView =
- | ToggleFieldView
- | ProgressFieldView
- | SelectorFieldView
- | StatFieldView
- | ButtonFieldView;
+ | ToggleFieldView
+ | ProgressFieldView
+ | SelectorFieldView
+ | StatFieldView
+ | NumberFieldView
+ | ButtonFieldView
+ | CustomFieldView;
/** The output of `planSurface`: the ordered list of renderable fields. */
export interface SurfaceRenderPlan {
- readonly fields: readonly FieldView[];
+ readonly fields: readonly FieldView[];
}
+
+/**
+ * A render group: a maximal run of consecutive `stat` fields (rendered together
+ * as one aligned label/value table), or a single non-stat field. Grouping is a
+ * GENERIC presentation rule keyed on field kind — it never inspects a surface id.
+ */
+export type RenderGroup =
+ | { readonly type: "stats"; readonly stats: readonly StatFieldView[] }
+ | { readonly type: "field"; readonly field: Exclude<FieldView, StatFieldView> };
diff --git a/src/features/surface-host/ui/Button.svelte b/src/features/surface-host/ui/Button.svelte
index 62d7acf..ee9097c 100644
--- a/src/features/surface-host/ui/Button.svelte
+++ b/src/features/surface-host/ui/Button.svelte
@@ -1,21 +1,21 @@
<script lang="ts">
- import type { InvokeMessage } from "@dispatch/ui-contract";
- import type { ButtonFieldView } from "../logic/types";
+ import type { InvokeMessage } from "@dispatch/ui-contract";
+ import type { ButtonFieldView } from "../logic/types";
- let {
- field,
- surfaceId,
- onInvoke,
- }: { field: ButtonFieldView; surfaceId: string; onInvoke: (msg: InvokeMessage) => void } =
- $props();
+ let {
+ field,
+ surfaceId,
+ onInvoke,
+ }: { field: ButtonFieldView; surfaceId: string; onInvoke: (msg: InvokeMessage) => void } =
+ $props();
- function handleClick() {
- onInvoke({
- type: "invoke",
- surfaceId,
- actionId: field.action.actionId,
- });
- }
+ function handleClick() {
+ onInvoke({
+ type: "invoke",
+ surfaceId,
+ actionId: field.action.actionId,
+ });
+ }
</script>
<button onclick={handleClick}>{field.label}</button>
diff --git a/src/features/surface-host/ui/MessageQueueList.svelte b/src/features/surface-host/ui/MessageQueueList.svelte
new file mode 100644
index 0000000..554fa02
--- /dev/null
+++ b/src/features/surface-host/ui/MessageQueueList.svelte
@@ -0,0 +1,22 @@
+<script lang="ts">
+ import { parseMessageQueuePayload } from "../logic/message-queue";
+
+ let { payload }: { readonly payload: unknown } = $props();
+
+ // Parse defensively; an unparseable payload yields null → render nothing
+ // (graceful skip, per the custom-field contract).
+ const data = $derived(parseMessageQueuePayload(payload));
+</script>
+
+{#if data !== null && data.messages.length > 0}
+ <ul class="flex flex-col gap-1 text-sm">
+ {#each data.messages as msg (msg.id)}
+ <li class="rounded-box bg-base-200 px-3 py-2">
+ <p class="whitespace-pre-wrap">{msg.text}</p>
+ <time class="text-xs opacity-50" datetime={new Date(msg.queuedAt).toISOString()}>
+ {new Date(msg.queuedAt).toLocaleTimeString()}
+ </time>
+ </li>
+ {/each}
+ </ul>
+{/if}
diff --git a/src/features/surface-host/ui/Number.svelte b/src/features/surface-host/ui/Number.svelte
new file mode 100644
index 0000000..5a67087
--- /dev/null
+++ b/src/features/surface-host/ui/Number.svelte
@@ -0,0 +1,43 @@
+<script lang="ts">
+ import type { InvokeMessage } from "@dispatch/ui-contract";
+ import type { NumberFieldView } from "../logic/types";
+
+ let {
+ field,
+ surfaceId,
+ onInvoke,
+ }: { field: NumberFieldView; surfaceId: string; onInvoke: (msg: InvokeMessage) => void } =
+ $props();
+
+ // Commit on change/Enter rather than every keystroke. Ignore empty/non-numeric
+ // input (the backend also floors/validates); send the new number as payload.
+ function commit(event: Event) {
+ const target = event.target as HTMLInputElement;
+ const next = target.valueAsNumber;
+ if (Number.isNaN(next)) return;
+ onInvoke({
+ type: "invoke",
+ surfaceId,
+ actionId: field.action.actionId,
+ payload: next,
+ });
+ }
+</script>
+
+<label class="flex items-center justify-between gap-2 text-sm">
+ <span>{field.label}</span>
+ <span class="flex items-center gap-1">
+ <input
+ type="number"
+ class="input input-bordered input-sm w-24"
+ value={field.value}
+ min={field.min}
+ max={field.max}
+ step={field.step}
+ onchange={commit}
+ />
+ {#if field.unit}
+ <span class="opacity-60">{field.unit}</span>
+ {/if}
+ </span>
+</label>
diff --git a/src/features/surface-host/ui/Progress.svelte b/src/features/surface-host/ui/Progress.svelte
index cba9e0f..e291c79 100644
--- a/src/features/surface-host/ui/Progress.svelte
+++ b/src/features/surface-host/ui/Progress.svelte
@@ -1,13 +1,13 @@
<script lang="ts">
- import type { ProgressFieldView } from "../logic/types";
+ import type { ProgressFieldView } from "../logic/types";
- let { field }: { field: ProgressFieldView } = $props();
+ let { field }: { field: ProgressFieldView } = $props();
- const percent = $derived(Math.round(field.value * 100));
+ const percent = $derived(Math.round(field.value * 100));
</script>
<div>
- <span>{field.label}</span>
- <progress max="100" value={percent}>{percent}%</progress>
- <span>{percent}%</span>
+ <span>{field.label}</span>
+ <progress max="100" value={percent}>{percent}%</progress>
+ <span>{percent}%</span>
</div>
diff --git a/src/features/surface-host/ui/Selector.svelte b/src/features/surface-host/ui/Selector.svelte
index 2da104f..4cb3536 100644
--- a/src/features/surface-host/ui/Selector.svelte
+++ b/src/features/surface-host/ui/Selector.svelte
@@ -1,32 +1,32 @@
<script lang="ts">
- import type { InvokeMessage } from "@dispatch/ui-contract";
- import type { SelectorFieldView } from "../logic/types";
+ import type { InvokeMessage } from "@dispatch/ui-contract";
+ import type { SelectorFieldView } from "../logic/types";
- let {
- field,
- surfaceId,
- onInvoke,
- }: { field: SelectorFieldView; surfaceId: string; onInvoke: (msg: InvokeMessage) => void } =
- $props();
+ let {
+ field,
+ surfaceId,
+ onInvoke,
+ }: { field: SelectorFieldView; surfaceId: string; onInvoke: (msg: InvokeMessage) => void } =
+ $props();
- function handleChange(event: Event) {
- const target = event.target as HTMLSelectElement;
- onInvoke({
- type: "invoke",
- surfaceId,
- actionId: field.action.actionId,
- payload: target.value,
- });
- }
+ function handleChange(event: Event) {
+ const target = event.target as HTMLSelectElement;
+ onInvoke({
+ type: "invoke",
+ surfaceId,
+ actionId: field.action.actionId,
+ payload: target.value,
+ });
+ }
</script>
<label>
- {field.label}
- <select onchange={handleChange}>
- {#each field.options as option (option.value)}
- <option value={option.value} selected={option.value === field.value}>
- {option.label}
- </option>
- {/each}
- </select>
+ {field.label}
+ <select onchange={handleChange}>
+ {#each field.options as option (option.value)}
+ <option value={option.value} selected={option.value === field.value}>
+ {option.label}
+ </option>
+ {/each}
+ </select>
</label>
diff --git a/src/features/surface-host/ui/Stat.svelte b/src/features/surface-host/ui/Stat.svelte
deleted file mode 100644
index e184dab..0000000
--- a/src/features/surface-host/ui/Stat.svelte
+++ /dev/null
@@ -1,10 +0,0 @@
-<script lang="ts">
- import type { StatFieldView } from "../logic/types";
-
- let { field }: { field: StatFieldView } = $props();
-</script>
-
-<dl>
- <dt>{field.label}</dt>
- <dd>{field.value}</dd>
-</dl>
diff --git a/src/features/surface-host/ui/StatTable.svelte b/src/features/surface-host/ui/StatTable.svelte
new file mode 100644
index 0000000..c559352
--- /dev/null
+++ b/src/features/surface-host/ui/StatTable.svelte
@@ -0,0 +1,21 @@
+<script lang="ts">
+ import type { StatFieldView } from "../logic/types";
+
+ // Renders a run of stat fields as one aligned label/value table. Headerless:
+ // the column semantics aren't known generically, but the two-column layout
+ // gives the tidy, aligned readout the stats deserve (e.g. extension → version).
+ let { stats }: { readonly stats: readonly StatFieldView[] } = $props();
+</script>
+
+<div class="overflow-x-auto">
+ <table class="table table-sm">
+ <tbody>
+ {#each stats as stat, i (i)}
+ <tr>
+ <th class="font-medium">{stat.label}</th>
+ <td class="text-right tabular-nums">{stat.value}</td>
+ </tr>
+ {/each}
+ </tbody>
+ </table>
+</div>
diff --git a/src/features/surface-host/ui/SurfaceTable.svelte b/src/features/surface-host/ui/SurfaceTable.svelte
new file mode 100644
index 0000000..e47c122
--- /dev/null
+++ b/src/features/surface-host/ui/SurfaceTable.svelte
@@ -0,0 +1,14 @@
+<script lang="ts">
+ import Table from "../../../components/Table.svelte";
+ import { parseTablePayload } from "../logic/table";
+
+ let { payload }: { readonly payload: unknown } = $props();
+
+ // Parse defensively; an unparseable payload yields null → render nothing
+ // (graceful skip, per the custom-field contract).
+ const data = $derived(parseTablePayload(payload));
+</script>
+
+{#if data !== null}
+ <Table columns={data.columns} rows={data.rows} />
+{/if}
diff --git a/src/features/surface-host/ui/SurfaceView.svelte b/src/features/surface-host/ui/SurfaceView.svelte
index 4207913..aed8d03 100644
--- a/src/features/surface-host/ui/SurfaceView.svelte
+++ b/src/features/surface-host/ui/SurfaceView.svelte
@@ -1,33 +1,49 @@
<script lang="ts">
- import type { InvokeMessage, SurfaceSpec } from "@dispatch/ui-contract";
- import { planSurface } from "../logic/plan";
- import Button from "./Button.svelte";
- import Progress from "./Progress.svelte";
- import Selector from "./Selector.svelte";
- import Stat from "./Stat.svelte";
- import Toggle from "./Toggle.svelte";
+ import type { InvokeMessage, SurfaceSpec } from "@dispatch/ui-contract";
+ import { groupRenderFields, planSurface } from "../logic/plan";
+ import Button from "./Button.svelte";
+ import MessageQueueList from "./MessageQueueList.svelte";
+ import Number from "./Number.svelte";
+ import Progress from "./Progress.svelte";
+ import Selector from "./Selector.svelte";
+ import StatTable from "./StatTable.svelte";
+ import SurfaceTable from "./SurfaceTable.svelte";
+ import TodoList from "./TodoList.svelte";
+ import Toggle from "./Toggle.svelte";
- let {
- spec,
- onInvoke,
- }: { spec: SurfaceSpec; onInvoke: (msg: InvokeMessage) => void } = $props();
+ let { spec, onInvoke }: { spec: SurfaceSpec; onInvoke: (msg: InvokeMessage) => void } = $props();
- const plan = $derived(planSurface(spec));
+ const plan = $derived(planSurface(spec));
+ // Consecutive stats render together as one aligned table; everything else is
+ // a standalone widget. Grouping keys on field KIND only — never the surface id.
+ const groups = $derived(groupRenderFields(plan.fields));
</script>
<article>
- <h2>{spec.title}</h2>
- {#each plan.fields as field (field)}
- {#if field.kind === "toggle"}
- <Toggle {field} surfaceId={spec.id} {onInvoke} />
- {:else if field.kind === "progress"}
- <Progress {field} />
- {:else if field.kind === "selector"}
- <Selector {field} surfaceId={spec.id} {onInvoke} />
- {:else if field.kind === "stat"}
- <Stat {field} />
- {:else if field.kind === "button"}
- <Button {field} surfaceId={spec.id} {onInvoke} />
- {/if}
- {/each}
+ <h2>{spec.title}</h2>
+ {#each groups as group, i (i)}
+ {#if group.type === "stats"}
+ <StatTable stats={group.stats} />
+ {:else if group.field.kind === "toggle"}
+ <Toggle field={group.field} surfaceId={spec.id} {onInvoke} />
+ {:else if group.field.kind === "progress"}
+ <Progress field={group.field} />
+ {:else if group.field.kind === "selector"}
+ <Selector field={group.field} surfaceId={spec.id} {onInvoke} />
+ {:else if group.field.kind === "number"}
+ <Number field={group.field} surfaceId={spec.id} {onInvoke} />
+ {:else if group.field.kind === "button"}
+ <Button field={group.field} surfaceId={spec.id} {onInvoke} />
+ {:else if group.field.kind === "custom"}
+ <!-- Dispatch on rendererId (a renderer KIND, never a surface id);
+ unknown ids gracefully render nothing. -->
+ {#if group.field.rendererId === "table"}
+ <SurfaceTable payload={group.field.payload} />
+ {:else if group.field.rendererId === "message-queue"}
+ <MessageQueueList payload={group.field.payload} />
+ {:else if group.field.rendererId === "todo"}
+ <TodoList payload={group.field.payload} />
+ {/if}
+ {/if}
+ {/each}
</article>
diff --git a/src/features/surface-host/ui/TodoList.svelte b/src/features/surface-host/ui/TodoList.svelte
new file mode 100644
index 0000000..cffefde
--- /dev/null
+++ b/src/features/surface-host/ui/TodoList.svelte
@@ -0,0 +1,66 @@
+<script lang="ts">
+ import { parseTodoPayload } from "../logic/todo";
+
+ let { payload }: { readonly payload: unknown } = $props();
+
+ const data = $derived(parseTodoPayload(payload));
+</script>
+
+<!-- Fixed at 30% of the viewport height so the region is consistent whether the
+ list is empty or overflowing — it always reserves the space and scrolls
+ internally (mirrors the tabs view). -->
+<ul class="flex h-[30vh] flex-col gap-1 overflow-y-auto pr-1">
+ {#if data !== null && data.todos.length > 0}
+ {#each data.todos as todo, i (i)}
+ <li class="flex items-start gap-2 rounded-box bg-base-200 px-3 py-2 text-sm">
+ <!-- Status indicator -->
+ <span class="mt-0.5 shrink-0">
+ {#if todo.status === "in_progress"}
+ <span class="block h-4 w-4 rounded-full bg-primary"></span>
+ {:else if todo.status === "completed"}
+ <svg
+ xmlns="http://www.w3.org/2000/svg"
+ viewBox="0 0 24 24"
+ fill="none"
+ stroke="currentColor"
+ stroke-width="3"
+ stroke-linecap="round"
+ stroke-linejoin="round"
+ class="h-4 w-4 text-success"
+ >
+ <polyline points="20 6 9 17 4 12"></polyline>
+ </svg>
+ {:else if todo.status === "cancelled"}
+ <svg
+ xmlns="http://www.w3.org/2000/svg"
+ viewBox="0 0 24 24"
+ fill="none"
+ stroke="currentColor"
+ stroke-width="3"
+ stroke-linecap="round"
+ stroke-linejoin="round"
+ class="h-4 w-4 text-base-content/40"
+ >
+ <line x1="18" y1="6" x2="6" y2="18"></line>
+ <line x1="6" y1="6" x2="18" y2="18"></line>
+ </svg>
+ {:else}
+ <!-- pending: empty circle -->
+ <span class="block h-4 w-4 rounded-full border-2 border-base-content/30"></span>
+ {/if}
+ </span>
+
+ <!-- Content -->
+ <span
+ class:flex-1={true}
+ class:line-through={todo.status === "completed" || todo.status === "cancelled"}
+ class:opacity-50={todo.status === "completed" || todo.status === "cancelled"}
+ >
+ {todo.content}
+ </span>
+ </li>
+ {/each}
+ {:else}
+ <li class="text-xs opacity-60">No tasks yet.</li>
+ {/if}
+</ul>
diff --git a/src/features/surface-host/ui/Toggle.svelte b/src/features/surface-host/ui/Toggle.svelte
index aec8f4e..0326851 100644
--- a/src/features/surface-host/ui/Toggle.svelte
+++ b/src/features/surface-host/ui/Toggle.svelte
@@ -1,25 +1,25 @@
<script lang="ts">
- import type { InvokeMessage } from "@dispatch/ui-contract";
- import type { ToggleFieldView } from "../logic/types";
+ import type { InvokeMessage } from "@dispatch/ui-contract";
+ import type { ToggleFieldView } from "../logic/types";
- let {
- field,
- surfaceId,
- onInvoke,
- }: { field: ToggleFieldView; surfaceId: string; onInvoke: (msg: InvokeMessage) => void } =
- $props();
+ let {
+ field,
+ surfaceId,
+ onInvoke,
+ }: { field: ToggleFieldView; surfaceId: string; onInvoke: (msg: InvokeMessage) => void } =
+ $props();
- function handleChange() {
- onInvoke({
- type: "invoke",
- surfaceId,
- actionId: field.action.actionId,
- payload: !field.value,
- });
- }
+ function handleChange() {
+ onInvoke({
+ type: "invoke",
+ surfaceId,
+ actionId: field.action.actionId,
+ payload: !field.value,
+ });
+ }
</script>
<label>
- <input type="checkbox" checked={field.value} onchange={handleChange} />
- {field.label}
+ <input type="checkbox" checked={field.value} onchange={handleChange} />
+ {field.label}
</label>
diff --git a/src/features/system-prompt/index.ts b/src/features/system-prompt/index.ts
new file mode 100644
index 0000000..50d9d21
--- /dev/null
+++ b/src/features/system-prompt/index.ts
@@ -0,0 +1,17 @@
+export type {
+ LoadSystemPrompt,
+ LoadSystemPromptVariables,
+ SaveSystemPrompt,
+ SystemPromptLoadResult,
+ SystemPromptSaveResult,
+ SystemPromptVariablesResult,
+ VariableGroup,
+} from "./logic/view-model";
+export { buildTag, groupVariables, insertTag, isDynamicVariable } from "./logic/view-model";
+export { default as SystemPromptBuilder } from "./ui/SystemPromptBuilder.svelte";
+
+/** Public module manifest — aggregated by the shell's "Loaded Modules" view. */
+export const manifest = {
+ name: "system-prompt",
+ description: "Global system prompt template builder with variable placeholders",
+} as const;
diff --git a/src/features/system-prompt/logic/view-model.test.ts b/src/features/system-prompt/logic/view-model.test.ts
new file mode 100644
index 0000000..223327b
--- /dev/null
+++ b/src/features/system-prompt/logic/view-model.test.ts
@@ -0,0 +1,90 @@
+import type { SystemPromptVariable } from "@dispatch/transport-contract";
+import { describe, expect, it } from "vitest";
+import {
+ buildIfNotTag,
+ buildIfTag,
+ buildTag,
+ groupVariables,
+ insertTag,
+ isDynamicVariable,
+} from "./view-model";
+
+describe("system-prompt view-model", () => {
+ describe("buildTag", () => {
+ it("builds a variable placeholder", () => {
+ expect(buildTag("system", "time")).toBe("[system:time]");
+ });
+ });
+
+ describe("buildIfTag", () => {
+ it("builds an opening conditional tag", () => {
+ expect(buildIfTag("file", "AGENTS.md")).toBe("[if file:AGENTS.md]");
+ });
+ });
+
+ describe("buildIfNotTag", () => {
+ it("builds a negated opening conditional tag", () => {
+ expect(buildIfNotTag("prompt", "cwd")).toBe("[if !prompt:cwd]");
+ });
+ });
+
+ describe("insertTag", () => {
+ it("inserts a tag at the cursor position", () => {
+ expect(insertTag("Hello world", "[system:time]", 5, 5)).toEqual({
+ template: "Hello[system:time] world",
+ cursor: 18,
+ });
+ });
+
+ it("replaces the selected text", () => {
+ const tag = buildTag("file", "README.md");
+ expect(insertTag("Hello world", tag, 6, 11)).toEqual({
+ template: `Hello ${tag}`,
+ cursor: 6 + tag.length,
+ });
+ });
+
+ it("inserts at the end", () => {
+ const tag = buildTag("git", "branch");
+ expect(insertTag("", tag, 0, 0)).toEqual({
+ template: tag,
+ cursor: tag.length,
+ });
+ });
+ });
+
+ describe("groupVariables", () => {
+ it("groups by type in first-appearing order", () => {
+ const variables: SystemPromptVariable[] = [
+ { type: "system", name: "time", description: "" },
+ { type: "prompt", name: "cwd", description: "" },
+ { type: "system", name: "date", description: "" },
+ { type: "git", name: "branch", description: "" },
+ ];
+ const groups = groupVariables(variables);
+ expect(groups.map((g) => g.type)).toEqual(["system", "prompt", "git"]);
+ expect(groups[0]?.variables.map((v) => v.name)).toEqual(["time", "date"]);
+ expect(groups[1]?.variables.map((v) => v.name)).toEqual(["cwd"]);
+ expect(groups[2]?.variables.map((v) => v.name)).toEqual(["branch"]);
+ });
+
+ it("returns an empty array when no variables", () => {
+ expect(groupVariables([])).toEqual([]);
+ });
+ });
+
+ describe("isDynamicVariable", () => {
+ it("returns true when dynamic is true", () => {
+ expect(
+ isDynamicVariable({ type: "file", name: "path", description: "", dynamic: true }),
+ ).toBe(true);
+ });
+
+ it("returns false when dynamic is missing or false", () => {
+ expect(isDynamicVariable({ type: "system", name: "time", description: "" })).toBe(false);
+ expect(
+ isDynamicVariable({ type: "system", name: "time", description: "", dynamic: false }),
+ ).toBe(false);
+ });
+ });
+});
diff --git a/src/features/system-prompt/logic/view-model.ts b/src/features/system-prompt/logic/view-model.ts
new file mode 100644
index 0000000..e202ee3
--- /dev/null
+++ b/src/features/system-prompt/logic/view-model.ts
@@ -0,0 +1,106 @@
+import type { SystemPromptVariable } from "@dispatch/transport-contract";
+
+/**
+ * Pure core for the system prompt builder — zero DOM, zero effects, zero Svelte.
+ *
+ * The system prompt is a global template, stored on the backend, resolved once
+ * per conversation at first turn (then persisted for prompt-cache safety). The
+ * frontend builder exposes the template text plus a palette of available
+ * variables; clicking a variable inserts `[type:name]` at the cursor. This module
+ * holds the pure logic: tag construction, insertion into a template, and
+ * grouping of variables. The HTTP edge is injected via the ports defined below.
+ */
+
+// ── Injected ports (composition root adapts the store to these shapes) ─────────
+
+export type SystemPromptLoadResult =
+ | { readonly ok: true; readonly template: string }
+ | { readonly ok: false; readonly error: string };
+
+export type LoadSystemPrompt = () => Promise<SystemPromptLoadResult>;
+
+export type SystemPromptSaveResult =
+ | { readonly ok: true; readonly template: string }
+ | { readonly ok: false; readonly error: string };
+
+export type SaveSystemPrompt = (template: string) => Promise<SystemPromptSaveResult>;
+
+export type SystemPromptVariablesResult =
+ | { readonly ok: true; readonly variables: readonly SystemPromptVariable[] }
+ | { readonly ok: false; readonly error: string };
+
+export type LoadSystemPromptVariables = () => Promise<SystemPromptVariablesResult>;
+
+// ── Template helpers ──────────────────────────────────────────────────────────
+
+/** Build the literal placeholder `[type:name]` for a variable. */
+export function buildTag(type: string, name: string): string {
+ return `[${type}:${name}]`;
+}
+
+/** Build the literal placeholder `[if type:name]` for a conditional block. */
+export function buildIfTag(type: string, name: string): string {
+ return `[if ${type}:${name}]`;
+}
+
+/** Build the literal placeholder `[if !type:name]` for a negated conditional block. */
+export function buildIfNotTag(type: string, name: string): string {
+ return `[if !${type}:${name}]`;
+}
+
+export interface Insertion {
+ /** Template text after insertion. */
+ template: string;
+ /** New cursor position (caret index) after insertion. */
+ cursor: number;
+}
+
+/**
+ * Insert `tag` into `template` at the current selection range. Replaces any
+ * selected text. Returns both the new template and the new cursor position so
+ * the caller can restore the caret after the inserted tag.
+ */
+export function insertTag(
+ template: string,
+ tag: string,
+ selectionStart: number,
+ selectionEnd: number,
+): Insertion {
+ const before = template.slice(0, selectionStart);
+ const after = template.slice(selectionEnd);
+ const next = before + tag + after;
+ return { template: next, cursor: selectionStart + tag.length };
+}
+
+// ── Variable grouping ─────────────────────────────────────────────────────────
+
+export interface VariableGroup {
+ /** Variable type (e.g. `"system"`, `"file"`, `"prompt"`, `"git"`). */
+ readonly type: string;
+ /** Variables of this type. */
+ readonly variables: readonly SystemPromptVariable[];
+}
+
+/**
+ * Group variables by type, preserving the order of first appearance within each
+ * group and the order of first-appearing types.
+ */
+export function groupVariables(
+ variables: readonly SystemPromptVariable[],
+): readonly VariableGroup[] {
+ const order: string[] = [];
+ const map = new Map<string, SystemPromptVariable[]>();
+ for (const v of variables) {
+ if (!map.has(v.type)) {
+ map.set(v.type, []);
+ order.push(v.type);
+ }
+ map.get(v.type)?.push(v);
+ }
+ return order.map((type) => ({ type, variables: map.get(type) ?? [] }));
+}
+
+/** Whether a variable is "dynamic" (any name is valid, e.g. `file:<path>`). */
+export function isDynamicVariable(variable: SystemPromptVariable): boolean {
+ return variable.dynamic === true;
+}
diff --git a/src/features/system-prompt/ui/SystemPromptBuilder.svelte b/src/features/system-prompt/ui/SystemPromptBuilder.svelte
new file mode 100644
index 0000000..2e92e26
--- /dev/null
+++ b/src/features/system-prompt/ui/SystemPromptBuilder.svelte
@@ -0,0 +1,243 @@
+<script lang="ts">
+ import type { SystemPromptVariable } from "@dispatch/transport-contract";
+ import { tick, untrack } from "svelte";
+ import {
+ buildTag,
+ groupVariables,
+ insertTag,
+ isDynamicVariable,
+ type LoadSystemPrompt,
+ type LoadSystemPromptVariables,
+ type SaveSystemPrompt,
+ } from "../logic/view-model";
+
+ let {
+ loadPrompt,
+ savePrompt,
+ loadVariables,
+ onClose,
+ }: {
+ loadPrompt: LoadSystemPrompt;
+ savePrompt: SaveSystemPrompt;
+ loadVariables: LoadSystemPromptVariables;
+ onClose: () => void;
+ } = $props();
+
+ let value = $state("");
+ let loadedTemplate = $state("");
+ let loading = $state(false);
+ let saving = $state(false);
+ let error = $state<string | null>(null);
+ let justSaved = $state(false);
+ let variables = $state<readonly SystemPromptVariable[]>([]);
+ let filePath = $state("");
+ let textarea: HTMLTextAreaElement | null = null;
+
+ const groups = $derived(groupVariables(variables));
+ const hasChanges = $derived(value !== loadedTemplate);
+
+ async function load() {
+ untrack(() => {
+ loading = true;
+ error = null;
+ });
+
+ const [templateResult, variablesResult] = await Promise.all([loadPrompt(), loadVariables()]);
+
+ loading = false;
+
+ if (!templateResult.ok || !variablesResult.ok) {
+ const parts: string[] = [];
+ if (!templateResult.ok) parts.push(templateResult.error);
+ if (!variablesResult.ok) parts.push(variablesResult.error);
+ error = parts.join("; ");
+ return;
+ }
+
+ value = templateResult.template;
+ loadedTemplate = templateResult.template;
+ variables = variablesResult.variables;
+ }
+
+ async function save() {
+ if (saving || loading) return;
+ saving = true;
+ error = null;
+ justSaved = false;
+ const result = await savePrompt(value);
+ saving = false;
+ if (!result.ok) {
+ error = result.error;
+ return;
+ }
+ loadedTemplate = result.template;
+ value = result.template;
+ justSaved = true;
+ }
+
+ function reset() {
+ value = loadedTemplate;
+ error = null;
+ justSaved = false;
+ }
+
+ async function insertTagAtCursor(tag: string) {
+ if (textarea === null) return;
+ const start = textarea.selectionStart;
+ const end = textarea.selectionEnd;
+ const insertion = insertTag(value, tag, start, end);
+ value = insertion.template;
+ await tick();
+ textarea.focus();
+ textarea.setSelectionRange(insertion.cursor, insertion.cursor);
+ }
+
+ async function insertFileVariable(type: string) {
+ const path = filePath.trim();
+ if (path.length === 0) return;
+ await insertTagAtCursor(buildTag(type, path));
+ filePath = "";
+ }
+
+ function onKeydown(e: KeyboardEvent) {
+ if (e.key === "Escape") onClose();
+ }
+
+ // Load on mount once.
+ $effect(() => {
+ void load();
+ });
+</script>
+
+<svelte:window onkeydown={onKeydown} />
+
+<!-- svelte-ignore a11y_no_static_element_interactions -->
+<div
+ class="fixed inset-0 z-50 flex items-center justify-center bg-black/50 p-4"
+ role="dialog"
+ aria-modal="true"
+ aria-label="System prompt builder"
+ tabindex="-1"
+ onclick={onClose}
+ onkeydown={onKeydown}
+>
+ <!-- svelte-ignore a11y_click_events_have_key_events, a11y_no_static_element_interactions -->
+ <div
+ class="flex h-[85vh] w-full max-w-6xl flex-col overflow-hidden rounded-box bg-base-100 shadow-2xl"
+ onclick={(e) => e.stopPropagation()}
+ >
+ <!-- Header -->
+ <div class="flex shrink-0 items-center justify-between border-b border-base-300 px-4 py-3">
+ <div class="flex items-center gap-2">
+ <h2 class="text-sm font-semibold">System Prompt</h2>
+ {#if loading}
+ <span class="loading loading-spinner loading-xs"></span>
+ {/if}
+ </div>
+ <button
+ type="button"
+ class="btn btn-ghost btn-sm btn-square"
+ onclick={onClose}
+ aria-label="Close system prompt builder"
+ >
+ ✕
+ </button>
+ </div>
+
+ <!-- Body: half editor / half variables -->
+ <div class="flex min-h-0 flex-1">
+ <!-- Left: template editor -->
+ <div class="flex w-1/2 min-w-0 flex-col gap-2 border-r border-base-300 p-4">
+ <textarea
+ bind:this={textarea}
+ bind:value
+ class="textarea textarea-bordered min-h-0 w-full flex-1 resize-none font-mono text-xs"
+ placeholder={loading
+ ? "Loading template..."
+ : "Edit the global system prompt template..."}
+ disabled={loading}
+ aria-label="System prompt template"></textarea>
+
+ <div class="flex shrink-0 items-center gap-2">
+ <button
+ type="button"
+ class="btn btn-primary btn-sm"
+ disabled={loading || saving || !hasChanges}
+ onclick={save}
+ >
+ {#if saving}
+ <span class="loading loading-spinner loading-xs"></span>
+ {:else}
+ Save
+ {/if}
+ </button>
+ <button
+ type="button"
+ class="btn btn-ghost btn-sm"
+ disabled={loading || !hasChanges}
+ onclick={reset}
+ >
+ Reset
+ </button>
+ {#if justSaved && !hasChanges}
+ <span class="text-xs text-success">Saved.</span>
+ {:else if hasChanges}
+ <span class="text-xs opacity-60">Unsaved changes</span>
+ {/if}
+ </div>
+
+ {#if error}
+ <p class="shrink-0 text-xs text-error">{error}</p>
+ {/if}
+ </div>
+
+ <!-- Right: variable palette -->
+ <div class="flex w-1/2 min-w-0 flex-col overflow-y-auto p-4">
+ <h3 class="mb-2 shrink-0 text-xs font-semibold uppercase opacity-60">Variables</h3>
+ {#if groups.length === 0 && !loading}
+ <p class="text-xs opacity-60">No variables available.</p>
+ {/if}
+ <div class="flex flex-col gap-3">
+ {#each groups as group (group.type)}
+ <div class="rounded-box bg-base-200 p-3">
+ <span class="text-xs font-semibold uppercase opacity-70">{group.type}</span>
+ <div class="mt-2 flex flex-wrap gap-1">
+ {#each group.variables as variable (variable.type + variable.name)}
+ {#if isDynamicVariable(variable)}
+ <div class="flex items-center gap-1">
+ <input
+ type="text"
+ class="input input-bordered input-xs w-32 font-mono"
+ bind:value={filePath}
+ placeholder={variable.name}
+ onkeydown={(e) => {
+ if (e.key === "Enter") void insertFileVariable(variable.type);
+ }}
+ />
+ <button
+ type="button"
+ class="btn btn-xs"
+ onclick={() => void insertFileVariable(variable.type)}
+ >
+ Insert
+ </button>
+ </div>
+ {:else}
+ <button
+ type="button"
+ class="btn btn-xs"
+ title={variable.description}
+ onclick={() => void insertTagAtCursor(buildTag(variable.type, variable.name))}
+ >
+ {variable.name}
+ </button>
+ {/if}
+ {/each}
+ </div>
+ </div>
+ {/each}
+ </div>
+ </div>
+ </div>
+ </div>
+</div>
diff --git a/src/features/tabs/index.ts b/src/features/tabs/index.ts
index 835788a..7520215 100644
--- a/src/features/tabs/index.ts
+++ b/src/features/tabs/index.ts
@@ -1,15 +1,23 @@
export type { Tab, TabsState } from "./tabs";
export {
- activeTab,
- closeTab,
- createTab,
- deriveTitle,
- initialState,
- newDraft,
- selectTab,
- setModel,
- setTitle,
+ activeTab,
+ closeTab,
+ createTab,
+ deriveTitle,
+ initialState,
+ MIN_HANDLE_LENGTH,
+ newDraft,
+ selectTab,
+ setModel,
+ setTitle,
+ shortHandle,
} from "./tabs";
export type { TabsStorage, TabsStore } from "./tabs-store.svelte";
export { createTabsStore } from "./tabs-store.svelte";
-export { default as TabBar } from "./ui/TabBar.svelte";
+export { default as TabList } from "./ui/TabList.svelte";
+
+/** Public module manifest — aggregated by the shell's "Loaded Modules" view. */
+export const manifest = {
+ name: "tabs",
+ description: "Conversation tabs with title derivation and persistence",
+} as const;
diff --git a/src/features/tabs/tabs-store.svelte.ts b/src/features/tabs/tabs-store.svelte.ts
index cba527e..d044b1f 100644
--- a/src/features/tabs/tabs-store.svelte.ts
+++ b/src/features/tabs/tabs-store.svelte.ts
@@ -1,67 +1,73 @@
import type { Tab, TabsState } from "./tabs";
import {
- initialState,
- closeTab as reduceCloseTab,
- createTab as reduceCreateTab,
- newDraft as reduceNewDraft,
- selectTab as reduceSelectTab,
- setModel as reduceSetModel,
- setTitle as reduceSetTitle,
- activeTab as selectActiveTab,
+ initialState,
+ closeTab as reduceCloseTab,
+ createTab as reduceCreateTab,
+ newDraft as reduceNewDraft,
+ openTab as reduceOpenTab,
+ selectTab as reduceSelectTab,
+ setModel as reduceSetModel,
+ setTitle as reduceSetTitle,
+ activeTab as selectActiveTab,
} from "./tabs";
export interface TabsStorage {
- load(): TabsState | null;
- save(state: TabsState): void;
+ load(): TabsState | null;
+ save(state: TabsState): void;
}
export interface TabsStore {
- readonly tabs: readonly Tab[];
- readonly activeConversationId: string | null;
- readonly activeTab: Tab | null;
- newDraft(): void;
- createTab(tab: Tab): void;
- selectTab(conversationId: string): void;
- closeTab(conversationId: string): void;
- setModel(conversationId: string, model: string): void;
- setTitle(conversationId: string, title: string): void;
+ readonly tabs: readonly Tab[];
+ readonly activeConversationId: string | null;
+ readonly activeTab: Tab | null;
+ newDraft(): void;
+ createTab(tab: Tab): void;
+ /** Add a tab WITHOUT focusing it (for `conversation.open`). No-op if already open. */
+ openTab(tab: Tab): void;
+ selectTab(conversationId: string): void;
+ closeTab(conversationId: string): void;
+ setModel(conversationId: string, model: string): void;
+ setTitle(conversationId: string, title: string): void;
}
export function createTabsStore(storage: TabsStorage): TabsStore {
- let state = $state<TabsState>(storage.load() ?? initialState());
+ let state = $state<TabsState>(storage.load() ?? initialState());
- function apply(next: TabsState): void {
- state = next;
- storage.save(next);
- }
+ function apply(next: TabsState): void {
+ state = next;
+ storage.save(next);
+ }
- return {
- get tabs(): readonly Tab[] {
- return state.tabs;
- },
- get activeConversationId(): string | null {
- return state.activeConversationId;
- },
- get activeTab(): Tab | null {
- return selectActiveTab(state);
- },
- newDraft(): void {
- apply(reduceNewDraft(state));
- },
- createTab(tab: Tab): void {
- apply(reduceCreateTab(state, tab));
- },
- selectTab(conversationId: string): void {
- apply(reduceSelectTab(state, conversationId));
- },
- closeTab(conversationId: string): void {
- apply(reduceCloseTab(state, conversationId));
- },
- setModel(conversationId: string, model: string): void {
- apply(reduceSetModel(state, conversationId, model));
- },
- setTitle(conversationId: string, title: string): void {
- apply(reduceSetTitle(state, conversationId, title));
- },
- };
+ return {
+ get tabs(): readonly Tab[] {
+ return state.tabs;
+ },
+ get activeConversationId(): string | null {
+ return state.activeConversationId;
+ },
+ get activeTab(): Tab | null {
+ return selectActiveTab(state);
+ },
+ newDraft(): void {
+ apply(reduceNewDraft(state));
+ },
+ createTab(tab: Tab): void {
+ apply(reduceCreateTab(state, tab));
+ },
+ openTab(tab: Tab): void {
+ apply(reduceOpenTab(state, tab));
+ },
+ selectTab(conversationId: string): void {
+ apply(reduceSelectTab(state, conversationId));
+ },
+ closeTab(conversationId: string): void {
+ apply(reduceCloseTab(state, conversationId));
+ },
+ setModel(conversationId: string, model: string): void {
+ apply(reduceSetModel(state, conversationId, model));
+ },
+ setTitle(conversationId: string, title: string): void {
+ apply(reduceSetTitle(state, conversationId, title));
+ },
+ };
}
diff --git a/src/features/tabs/tabs-store.test.ts b/src/features/tabs/tabs-store.test.ts
index 81ec8ad..bb4df98 100644
--- a/src/features/tabs/tabs-store.test.ts
+++ b/src/features/tabs/tabs-store.test.ts
@@ -4,154 +4,154 @@ import type { TabsStorage } from "./tabs-store.svelte";
import { createTabsStore } from "./tabs-store.svelte";
function createMemoryStorage(initial?: TabsState): TabsStorage & { data: TabsState | null } {
- let data: TabsState | null = initial ?? null;
- return {
- get data() {
- return data;
- },
- set data(v: TabsState | null) {
- data = v;
- },
- load() {
- return data;
- },
- save(state: TabsState) {
- data = state;
- },
- };
+ let data: TabsState | null = initial ?? null;
+ return {
+ get data() {
+ return data;
+ },
+ set data(v: TabsState | null) {
+ data = v;
+ },
+ load() {
+ return data;
+ },
+ save(state: TabsState) {
+ data = state;
+ },
+ };
}
describe("createTabsStore", () => {
- it("loads persisted state on construct", () => {
- const persisted: TabsState = {
- tabs: [{ conversationId: "c1", model: "m1", title: "T1" }],
- activeConversationId: "c1",
- };
- const storage = createMemoryStorage(persisted);
- const store = createTabsStore(storage);
-
- expect(store.tabs).toHaveLength(1);
- expect(store.activeConversationId).toBe("c1");
- expect(store.activeTab?.conversationId).toBe("c1");
- });
-
- it("starts with empty draft when no persisted state", () => {
- const storage = createMemoryStorage();
- const store = createTabsStore(storage);
-
- expect(store.tabs).toHaveLength(0);
- expect(store.activeConversationId).toBeNull();
- expect(store.activeTab).toBeNull();
- });
-
- it("saves after every mutation", () => {
- const storage = createMemoryStorage();
- const store = createTabsStore(storage);
-
- store.createTab({ conversationId: "c1", model: "m1", title: "T1" });
- expect(storage.data?.tabs).toHaveLength(1);
- expect(storage.data?.activeConversationId).toBe("c1");
-
- store.createTab({ conversationId: "c2", model: "m2", title: "T2" });
- expect(storage.data?.tabs).toHaveLength(2);
-
- store.selectTab("c1");
- expect(storage.data?.activeConversationId).toBe("c1");
-
- store.closeTab("c1");
- expect(storage.data?.tabs).toHaveLength(1);
- expect(storage.data?.activeConversationId).toBe("c2");
-
- store.setModel("c2", "new-model");
- expect(storage.data?.tabs[0]?.model).toBe("new-model");
-
- store.setTitle("c2", "New Title");
- expect(storage.data?.tabs[0]?.title).toBe("New Title");
-
- store.newDraft();
- expect(storage.data?.activeConversationId).toBeNull();
- });
-
- it("createTab appends and activates", () => {
- const storage = createMemoryStorage();
- const store = createTabsStore(storage);
-
- store.createTab({ conversationId: "c1", model: "m1", title: "T1" });
- expect(store.tabs).toHaveLength(1);
- expect(store.activeConversationId).toBe("c1");
-
- store.createTab({ conversationId: "c2", model: "m2", title: "T2" });
- expect(store.tabs).toHaveLength(2);
- expect(store.activeConversationId).toBe("c2");
- });
-
- it("selectTab changes active", () => {
- const storage = createMemoryStorage();
- const store = createTabsStore(storage);
-
- store.createTab({ conversationId: "c1", model: "m1", title: "T1" });
- store.createTab({ conversationId: "c2", model: "m2", title: "T2" });
-
- store.selectTab("c1");
- expect(store.activeConversationId).toBe("c1");
- });
-
- it("closeTab removes and activates neighbour", () => {
- const storage = createMemoryStorage();
- const store = createTabsStore(storage);
-
- store.createTab({ conversationId: "c1", model: "m1", title: "T1" });
- store.createTab({ conversationId: "c2", model: "m2", title: "T2" });
- store.createTab({ conversationId: "c3", model: "m3", title: "T3" });
-
- store.selectTab("c2");
- store.closeTab("c2");
- expect(store.tabs).toHaveLength(2);
- expect(store.activeConversationId).toBe("c1");
- });
-
- it("closing the last tab returns to draft", () => {
- const storage = createMemoryStorage();
- const store = createTabsStore(storage);
-
- store.createTab({ conversationId: "c1", model: "m1", title: "T1" });
- store.closeTab("c1");
- expect(store.tabs).toHaveLength(0);
- expect(store.activeConversationId).toBeNull();
- });
-
- it("setModel updates the right tab", () => {
- const storage = createMemoryStorage();
- const store = createTabsStore(storage);
-
- store.createTab({ conversationId: "c1", model: "old", title: "T1" });
- store.createTab({ conversationId: "c2", model: "m2", title: "T2" });
-
- store.setModel("c1", "new-model");
- expect(store.tabs[0]?.model).toBe("new-model");
- expect(store.tabs[1]?.model).toBe("m2");
- });
+ it("loads persisted state on construct", () => {
+ const persisted: TabsState = {
+ tabs: [{ conversationId: "c1", model: "m1", title: "T1", workspaceId: "default" }],
+ activeConversationId: "c1",
+ };
+ const storage = createMemoryStorage(persisted);
+ const store = createTabsStore(storage);
+
+ expect(store.tabs).toHaveLength(1);
+ expect(store.activeConversationId).toBe("c1");
+ expect(store.activeTab?.conversationId).toBe("c1");
+ });
+
+ it("starts with empty draft when no persisted state", () => {
+ const storage = createMemoryStorage();
+ const store = createTabsStore(storage);
+
+ expect(store.tabs).toHaveLength(0);
+ expect(store.activeConversationId).toBeNull();
+ expect(store.activeTab).toBeNull();
+ });
+
+ it("saves after every mutation", () => {
+ const storage = createMemoryStorage();
+ const store = createTabsStore(storage);
+
+ store.createTab({ conversationId: "c1", model: "m1", title: "T1", workspaceId: "default" });
+ expect(storage.data?.tabs).toHaveLength(1);
+ expect(storage.data?.activeConversationId).toBe("c1");
+
+ store.createTab({ conversationId: "c2", model: "m2", title: "T2", workspaceId: "default" });
+ expect(storage.data?.tabs).toHaveLength(2);
+
+ store.selectTab("c1");
+ expect(storage.data?.activeConversationId).toBe("c1");
+
+ store.closeTab("c1");
+ expect(storage.data?.tabs).toHaveLength(1);
+ expect(storage.data?.activeConversationId).toBe("c2");
+
+ store.setModel("c2", "new-model");
+ expect(storage.data?.tabs[0]?.model).toBe("new-model");
+
+ store.setTitle("c2", "New Title");
+ expect(storage.data?.tabs[0]?.title).toBe("New Title");
+
+ store.newDraft();
+ expect(storage.data?.activeConversationId).toBeNull();
+ });
+
+ it("createTab appends and activates", () => {
+ const storage = createMemoryStorage();
+ const store = createTabsStore(storage);
+
+ store.createTab({ conversationId: "c1", model: "m1", title: "T1", workspaceId: "default" });
+ expect(store.tabs).toHaveLength(1);
+ expect(store.activeConversationId).toBe("c1");
+
+ store.createTab({ conversationId: "c2", model: "m2", title: "T2", workspaceId: "default" });
+ expect(store.tabs).toHaveLength(2);
+ expect(store.activeConversationId).toBe("c2");
+ });
+
+ it("selectTab changes active", () => {
+ const storage = createMemoryStorage();
+ const store = createTabsStore(storage);
+
+ store.createTab({ conversationId: "c1", model: "m1", title: "T1", workspaceId: "default" });
+ store.createTab({ conversationId: "c2", model: "m2", title: "T2", workspaceId: "default" });
+
+ store.selectTab("c1");
+ expect(store.activeConversationId).toBe("c1");
+ });
+
+ it("closeTab removes and activates neighbour", () => {
+ const storage = createMemoryStorage();
+ const store = createTabsStore(storage);
+
+ store.createTab({ conversationId: "c1", model: "m1", title: "T1", workspaceId: "default" });
+ store.createTab({ conversationId: "c2", model: "m2", title: "T2", workspaceId: "default" });
+ store.createTab({ conversationId: "c3", model: "m3", title: "T3", workspaceId: "default" });
+
+ store.selectTab("c2");
+ store.closeTab("c2");
+ expect(store.tabs).toHaveLength(2);
+ expect(store.activeConversationId).toBe("c1");
+ });
+
+ it("closing the last tab returns to draft", () => {
+ const storage = createMemoryStorage();
+ const store = createTabsStore(storage);
+
+ store.createTab({ conversationId: "c1", model: "m1", title: "T1", workspaceId: "default" });
+ store.closeTab("c1");
+ expect(store.tabs).toHaveLength(0);
+ expect(store.activeConversationId).toBeNull();
+ });
+
+ it("setModel updates the right tab", () => {
+ const storage = createMemoryStorage();
+ const store = createTabsStore(storage);
+
+ store.createTab({ conversationId: "c1", model: "old", title: "T1", workspaceId: "default" });
+ store.createTab({ conversationId: "c2", model: "m2", title: "T2", workspaceId: "default" });
+
+ store.setModel("c1", "new-model");
+ expect(store.tabs[0]?.model).toBe("new-model");
+ expect(store.tabs[1]?.model).toBe("m2");
+ });
- it("setTitle updates the right tab", () => {
- const storage = createMemoryStorage();
- const store = createTabsStore(storage);
+ it("setTitle updates the right tab", () => {
+ const storage = createMemoryStorage();
+ const store = createTabsStore(storage);
- store.createTab({ conversationId: "c1", model: "m1", title: "Old" });
+ store.createTab({ conversationId: "c1", model: "m1", title: "Old", workspaceId: "default" });
- store.setTitle("c1", "New Title");
- expect(store.tabs[0]?.title).toBe("New Title");
- });
+ store.setTitle("c1", "New Title");
+ expect(store.tabs[0]?.title).toBe("New Title");
+ });
- it("newDraft clears active but keeps tabs", () => {
- const storage = createMemoryStorage();
- const store = createTabsStore(storage);
+ it("newDraft clears active but keeps tabs", () => {
+ const storage = createMemoryStorage();
+ const store = createTabsStore(storage);
- store.createTab({ conversationId: "c1", model: "m1", title: "T1" });
- store.createTab({ conversationId: "c2", model: "m2", title: "T2" });
+ store.createTab({ conversationId: "c1", model: "m1", title: "T1", workspaceId: "default" });
+ store.createTab({ conversationId: "c2", model: "m2", title: "T2", workspaceId: "default" });
- store.newDraft();
- expect(store.tabs).toHaveLength(2);
- expect(store.activeConversationId).toBeNull();
- expect(store.activeTab).toBeNull();
- });
+ store.newDraft();
+ expect(store.tabs).toHaveLength(2);
+ expect(store.activeConversationId).toBeNull();
+ expect(store.activeTab).toBeNull();
+ });
});
diff --git a/src/features/tabs/tabs.test.ts b/src/features/tabs/tabs.test.ts
index 3034e76..ec93076 100644
--- a/src/features/tabs/tabs.test.ts
+++ b/src/features/tabs/tabs.test.ts
@@ -1,191 +1,225 @@
import { describe, expect, it } from "vitest";
import type { Tab, TabsState } from "./tabs";
import {
- activeTab,
- closeTab,
- createTab,
- deriveTitle,
- initialState,
- newDraft,
- selectTab,
- setModel,
- setTitle,
+ activeTab,
+ closeTab,
+ createTab,
+ deriveTitle,
+ initialState,
+ MIN_HANDLE_LENGTH,
+ newDraft,
+ selectTab,
+ setModel,
+ setTitle,
+ shortHandle,
} from "./tabs";
const tab = (conversationId: string, model = "default", title = "Chat"): Tab => ({
- conversationId,
- model,
- title,
+ conversationId,
+ model,
+ title,
+ workspaceId: "default",
});
describe("initialState", () => {
- it("returns empty draft state when no persisted state", () => {
- const state = initialState();
- expect(state.tabs).toEqual([]);
- expect(state.activeConversationId).toBeNull();
- });
-
- it("returns persisted state when provided", () => {
- const persisted: TabsState = {
- tabs: [tab("c1")],
- activeConversationId: "c1",
- };
- const state = initialState(persisted);
- expect(state.tabs).toHaveLength(1);
- expect(state.activeConversationId).toBe("c1");
- });
+ it("returns empty draft state when no persisted state", () => {
+ const state = initialState();
+ expect(state.tabs).toEqual([]);
+ expect(state.activeConversationId).toBeNull();
+ });
+
+ it("returns persisted state when provided", () => {
+ const persisted: TabsState = {
+ tabs: [tab("c1")],
+ activeConversationId: "c1",
+ };
+ const state = initialState(persisted);
+ expect(state.tabs).toHaveLength(1);
+ expect(state.activeConversationId).toBe("c1");
+ });
});
describe("newDraft", () => {
- it("sets activeConversationId to null", () => {
- const state: TabsState = { tabs: [tab("c1")], activeConversationId: "c1" };
- const next = newDraft(state);
- expect(next.activeConversationId).toBeNull();
- });
-
- it("keeps existing tabs", () => {
- const state: TabsState = { tabs: [tab("c1"), tab("c2")], activeConversationId: "c1" };
- const next = newDraft(state);
- expect(next.tabs).toHaveLength(2);
- });
+ it("sets activeConversationId to null", () => {
+ const state: TabsState = { tabs: [tab("c1")], activeConversationId: "c1" };
+ const next = newDraft(state);
+ expect(next.activeConversationId).toBeNull();
+ });
+
+ it("keeps existing tabs", () => {
+ const state: TabsState = { tabs: [tab("c1"), tab("c2")], activeConversationId: "c1" };
+ const next = newDraft(state);
+ expect(next.tabs).toHaveLength(2);
+ });
});
describe("createTab", () => {
- it("appends and activates", () => {
- const state = initialState();
- const next = createTab(state, tab("c1"));
- expect(next.tabs).toHaveLength(1);
- expect(next.tabs[0]?.conversationId).toBe("c1");
- expect(next.activeConversationId).toBe("c1");
- });
-
- it("does not duplicate an existing conversationId", () => {
- const state: TabsState = { tabs: [tab("c1")], activeConversationId: "c1" };
- const next = createTab(state, tab("c1"));
- expect(next.tabs).toHaveLength(1);
- });
-
- it("activates an already-existing tab when createTab is called again", () => {
- const state: TabsState = { tabs: [tab("c1"), tab("c2")], activeConversationId: "c2" };
- const next = createTab(state, tab("c1"));
- expect(next.activeConversationId).toBe("c1");
- });
+ it("appends and activates", () => {
+ const state = initialState();
+ const next = createTab(state, tab("c1"));
+ expect(next.tabs).toHaveLength(1);
+ expect(next.tabs[0]?.conversationId).toBe("c1");
+ expect(next.activeConversationId).toBe("c1");
+ });
+
+ it("does not duplicate an existing conversationId", () => {
+ const state: TabsState = { tabs: [tab("c1")], activeConversationId: "c1" };
+ const next = createTab(state, tab("c1"));
+ expect(next.tabs).toHaveLength(1);
+ });
+
+ it("activates an already-existing tab when createTab is called again", () => {
+ const state: TabsState = { tabs: [tab("c1"), tab("c2")], activeConversationId: "c2" };
+ const next = createTab(state, tab("c1"));
+ expect(next.activeConversationId).toBe("c1");
+ });
});
describe("selectTab", () => {
- it("changes active", () => {
- const state: TabsState = { tabs: [tab("c1"), tab("c2")], activeConversationId: "c1" };
- const next = selectTab(state, "c2");
- expect(next.activeConversationId).toBe("c2");
- });
+ it("changes active", () => {
+ const state: TabsState = { tabs: [tab("c1"), tab("c2")], activeConversationId: "c1" };
+ const next = selectTab(state, "c2");
+ expect(next.activeConversationId).toBe("c2");
+ });
});
describe("closeTab", () => {
- it("removes the tab", () => {
- const state: TabsState = { tabs: [tab("c1"), tab("c2")], activeConversationId: "c1" };
- const next = closeTab(state, "c2");
- expect(next.tabs).toHaveLength(1);
- expect(next.tabs[0]?.conversationId).toBe("c1");
- });
-
- it("closing the active tab activates a neighbour (previous preferred)", () => {
- const state: TabsState = {
- tabs: [tab("c1"), tab("c2"), tab("c3")],
- activeConversationId: "c2",
- };
- const next = closeTab(state, "c2");
- expect(next.activeConversationId).toBe("c1");
- });
-
- it("closing the first active tab activates the next", () => {
- const state: TabsState = {
- tabs: [tab("c1"), tab("c2"), tab("c3")],
- activeConversationId: "c1",
- };
- const next = closeTab(state, "c1");
- expect(next.activeConversationId).toBe("c2");
- });
-
- it("closing the last tab returns to draft (null active)", () => {
- const state: TabsState = { tabs: [tab("c1")], activeConversationId: "c1" };
- const next = closeTab(state, "c1");
- expect(next.tabs).toHaveLength(0);
- expect(next.activeConversationId).toBeNull();
- });
-
- it("closing a non-active tab does not change active", () => {
- const state: TabsState = {
- tabs: [tab("c1"), tab("c2"), tab("c3")],
- activeConversationId: "c3",
- };
- const next = closeTab(state, "c1");
- expect(next.activeConversationId).toBe("c3");
- });
-
- it("closing a non-existent tab is a no-op", () => {
- const state: TabsState = { tabs: [tab("c1")], activeConversationId: "c1" };
- const next = closeTab(state, "missing");
- expect(next).toEqual(state);
- });
+ it("removes the tab", () => {
+ const state: TabsState = { tabs: [tab("c1"), tab("c2")], activeConversationId: "c1" };
+ const next = closeTab(state, "c2");
+ expect(next.tabs).toHaveLength(1);
+ expect(next.tabs[0]?.conversationId).toBe("c1");
+ });
+
+ it("closing the active tab activates a neighbour (previous preferred)", () => {
+ const state: TabsState = {
+ tabs: [tab("c1"), tab("c2"), tab("c3")],
+ activeConversationId: "c2",
+ };
+ const next = closeTab(state, "c2");
+ expect(next.activeConversationId).toBe("c1");
+ });
+
+ it("closing the first active tab activates the next", () => {
+ const state: TabsState = {
+ tabs: [tab("c1"), tab("c2"), tab("c3")],
+ activeConversationId: "c1",
+ };
+ const next = closeTab(state, "c1");
+ expect(next.activeConversationId).toBe("c2");
+ });
+
+ it("closing the last tab returns to draft (null active)", () => {
+ const state: TabsState = { tabs: [tab("c1")], activeConversationId: "c1" };
+ const next = closeTab(state, "c1");
+ expect(next.tabs).toHaveLength(0);
+ expect(next.activeConversationId).toBeNull();
+ });
+
+ it("closing a non-active tab does not change active", () => {
+ const state: TabsState = {
+ tabs: [tab("c1"), tab("c2"), tab("c3")],
+ activeConversationId: "c3",
+ };
+ const next = closeTab(state, "c1");
+ expect(next.activeConversationId).toBe("c3");
+ });
+
+ it("closing a non-existent tab is a no-op", () => {
+ const state: TabsState = { tabs: [tab("c1")], activeConversationId: "c1" };
+ const next = closeTab(state, "missing");
+ expect(next).toEqual(state);
+ });
});
describe("setModel", () => {
- it("updates the right tab", () => {
- const state: TabsState = { tabs: [tab("c1", "old"), tab("c2")], activeConversationId: "c1" };
- const next = setModel(state, "c1", "new-model");
- expect(next.tabs[0]?.model).toBe("new-model");
- expect(next.tabs[1]?.model).toBe("default");
- });
+ it("updates the right tab", () => {
+ const state: TabsState = { tabs: [tab("c1", "old"), tab("c2")], activeConversationId: "c1" };
+ const next = setModel(state, "c1", "new-model");
+ expect(next.tabs[0]?.model).toBe("new-model");
+ expect(next.tabs[1]?.model).toBe("default");
+ });
});
describe("setTitle", () => {
- it("updates the right tab", () => {
- const state: TabsState = { tabs: [tab("c1"), tab("c2")], activeConversationId: "c1" };
- const next = setTitle(state, "c1", "Updated title");
- expect(next.tabs[0]?.title).toBe("Updated title");
- expect(next.tabs[1]?.title).toBe("Chat");
- });
+ it("updates the right tab", () => {
+ const state: TabsState = { tabs: [tab("c1"), tab("c2")], activeConversationId: "c1" };
+ const next = setTitle(state, "c1", "Updated title");
+ expect(next.tabs[0]?.title).toBe("Updated title");
+ expect(next.tabs[1]?.title).toBe("Chat");
+ });
});
describe("activeTab", () => {
- it("returns the active tab", () => {
- const state: TabsState = { tabs: [tab("c1"), tab("c2")], activeConversationId: "c2" };
- expect(activeTab(state)?.conversationId).toBe("c2");
- });
-
- it("returns null when activeConversationId is null", () => {
- const state: TabsState = { tabs: [tab("c1")], activeConversationId: null };
- expect(activeTab(state)).toBeNull();
- });
-
- it("returns null when active tab is not found in tabs", () => {
- const state: TabsState = { tabs: [tab("c1")], activeConversationId: "missing" };
- expect(activeTab(state)).toBeNull();
- });
+ it("returns the active tab", () => {
+ const state: TabsState = { tabs: [tab("c1"), tab("c2")], activeConversationId: "c2" };
+ expect(activeTab(state)?.conversationId).toBe("c2");
+ });
+
+ it("returns null when activeConversationId is null", () => {
+ const state: TabsState = { tabs: [tab("c1")], activeConversationId: null };
+ expect(activeTab(state)).toBeNull();
+ });
+
+ it("returns null when active tab is not found in tabs", () => {
+ const state: TabsState = { tabs: [tab("c1")], activeConversationId: "missing" };
+ expect(activeTab(state)).toBeNull();
+ });
});
describe("deriveTitle", () => {
- it("truncates long messages with ellipsis", () => {
- const msg = "This is a very long message that should be truncated at some point";
- expect(deriveTitle(msg, 20)).toBe("This is a very long \u2026");
- });
-
- it("returns full message when under max", () => {
- expect(deriveTitle("Short", 40)).toBe("Short");
- });
-
- it("collapses whitespace", () => {
- expect(deriveTitle(" hello world ")).toBe("hello world");
- });
-
- it("falls back to 'New chat' for empty input", () => {
- expect(deriveTitle("")).toBe("New chat");
- expect(deriveTitle(" ")).toBe("New chat");
- });
-
- it("uses default max of ~40 chars", () => {
- const msg = "a".repeat(50);
- const result = deriveTitle(msg);
- expect(result).toBe(`${"a".repeat(40)}\u2026`);
- });
+ it("truncates long messages with ellipsis", () => {
+ const msg = "This is a very long message that should be truncated at some point";
+ expect(deriveTitle(msg, 20)).toBe("This is a very long \u2026");
+ });
+
+ it("returns full message when under max", () => {
+ expect(deriveTitle("Short", 40)).toBe("Short");
+ });
+
+ it("collapses whitespace", () => {
+ expect(deriveTitle(" hello world ")).toBe("hello world");
+ });
+
+ it("falls back to 'New chat' for empty input", () => {
+ expect(deriveTitle("")).toBe("New chat");
+ expect(deriveTitle(" ")).toBe("New chat");
+ });
+
+ it("uses default max of ~40 chars", () => {
+ const msg = "a".repeat(50);
+ const result = deriveTitle(msg);
+ expect(result).toBe(`${"a".repeat(40)}\u2026`);
+ });
+});
+
+describe("shortHandle", () => {
+ it("uses the minimum length when the id is unique", () => {
+ const h = shortHandle("3f9a1b2c-aaaa", ["3f9a1b2c-aaaa", "7c2d-bbbb"]);
+ expect(h).toBe("3f9a");
+ expect(h.length).toBe(MIN_HANDLE_LENGTH);
+ });
+
+ it("grows the prefix until unique among open tabs", () => {
+ // two ids share the first 5 chars → handle grows to 6 to disambiguate
+ expect(shortHandle("abcde1-xxxx", ["abcde1-xxxx", "abcde2-yyyy"])).toBe("abcde1");
+ expect(shortHandle("abcde2-yyyy", ["abcde1-xxxx", "abcde2-yyyy"])).toBe("abcde2");
+ });
+
+ it("shrinks back to the minimum when the colliding sibling is gone", () => {
+ expect(shortHandle("abcde1-xxxx", ["abcde1-xxxx"])).toBe("abcd");
+ });
+
+ it("ignores the id itself when present in the list", () => {
+ expect(shortHandle("deadbeef", ["deadbeef"])).toBe("dead");
+ });
+
+ it("returns the whole id when shorter than the minimum length", () => {
+ expect(shortHandle("ab", ["ab", "cd"])).toBe("ab");
+ });
+
+ it("falls back to the full id when one id is a prefix of another", () => {
+ // "abcd" is a prefix of "abcd1234" → no unique shorter prefix exists for it
+ expect(shortHandle("abcd", ["abcd", "abcd1234"])).toBe("abcd");
+ });
});
diff --git a/src/features/tabs/tabs.ts b/src/features/tabs/tabs.ts
index 9af522f..63cda35 100644
--- a/src/features/tabs/tabs.ts
+++ b/src/features/tabs/tabs.ts
@@ -1,74 +1,114 @@
export interface Tab {
- readonly conversationId: string;
- readonly model: string;
- readonly title: string;
+ readonly conversationId: string;
+ readonly model: string;
+ readonly title: string;
+ /** The workspace this tab belongs to (the workspace's URL slug). */
+ readonly workspaceId: string;
}
export interface TabsState {
- readonly tabs: readonly Tab[];
- readonly activeConversationId: string | null;
+ readonly tabs: readonly Tab[];
+ readonly activeConversationId: string | null;
}
const DEFAULT_TITLE = "New chat";
const DEFAULT_MAX_TITLE_LENGTH = 40;
export function initialState(persisted?: TabsState): TabsState {
- if (persisted !== undefined) return persisted;
- return { tabs: [], activeConversationId: null };
+ if (persisted !== undefined) {
+ // Migrate tabs persisted before workspaces: assign them to the "default"
+ // workspace (the fallback for conversations with no workspace).
+ const tabs = persisted.tabs.map((t) => {
+ const wid = (t as { workspaceId?: string }).workspaceId;
+ return { ...t, workspaceId: wid ?? "default" };
+ });
+ return { tabs, activeConversationId: persisted.activeConversationId };
+ }
+ return { tabs: [], activeConversationId: null };
}
export function newDraft(state: TabsState): TabsState {
- return { ...state, activeConversationId: null };
+ return { ...state, activeConversationId: null };
}
export function createTab(state: TabsState, tab: Tab): TabsState {
- const exists = state.tabs.some((t) => t.conversationId === tab.conversationId);
- const tabs = exists ? state.tabs : [...state.tabs, tab];
- return { tabs, activeConversationId: tab.conversationId };
+ const exists = state.tabs.some((t) => t.conversationId === tab.conversationId);
+ const tabs = exists ? state.tabs : [...state.tabs, tab];
+ return { tabs, activeConversationId: tab.conversationId };
+}
+
+/**
+ * Add a tab WITHOUT switching the active conversation — used by the
+ * `conversation.open` WS broadcast (CLI `--open`): the tab appears in the
+ * strip but the user stays on their current tab. No-op if already open.
+ */
+export function openTab(state: TabsState, tab: Tab): TabsState {
+ const exists = state.tabs.some((t) => t.conversationId === tab.conversationId);
+ if (exists) return state;
+ return { tabs: [...state.tabs, tab], activeConversationId: state.activeConversationId };
}
export function selectTab(state: TabsState, conversationId: string): TabsState {
- return { ...state, activeConversationId: conversationId };
+ return { ...state, activeConversationId: conversationId };
}
export function closeTab(state: TabsState, conversationId: string): TabsState {
- const idx = state.tabs.findIndex((t) => t.conversationId === conversationId);
- if (idx === -1) return state;
+ const idx = state.tabs.findIndex((t) => t.conversationId === conversationId);
+ if (idx === -1) return state;
- const tabs = state.tabs.filter((t) => t.conversationId !== conversationId);
+ const tabs = state.tabs.filter((t) => t.conversationId !== conversationId);
- if (state.activeConversationId !== conversationId) {
- return { tabs, activeConversationId: state.activeConversationId };
- }
+ if (state.activeConversationId !== conversationId) {
+ return { tabs, activeConversationId: state.activeConversationId };
+ }
- if (tabs.length === 0) {
- return { tabs, activeConversationId: null };
- }
+ if (tabs.length === 0) {
+ return { tabs, activeConversationId: null };
+ }
- // prefer previous tab, else next
- const neighborIdx = idx > 0 ? idx - 1 : 0;
- const neighbor = tabs[neighborIdx];
- return { tabs, activeConversationId: neighbor?.conversationId ?? null };
+ // prefer previous tab, else next
+ const neighborIdx = idx > 0 ? idx - 1 : 0;
+ const neighbor = tabs[neighborIdx];
+ return { tabs, activeConversationId: neighbor?.conversationId ?? null };
}
export function setModel(state: TabsState, conversationId: string, model: string): TabsState {
- const tabs = state.tabs.map((t) => (t.conversationId === conversationId ? { ...t, model } : t));
- return { tabs, activeConversationId: state.activeConversationId };
+ const tabs = state.tabs.map((t) => (t.conversationId === conversationId ? { ...t, model } : t));
+ return { tabs, activeConversationId: state.activeConversationId };
}
export function setTitle(state: TabsState, conversationId: string, title: string): TabsState {
- const tabs = state.tabs.map((t) => (t.conversationId === conversationId ? { ...t, title } : t));
- return { tabs, activeConversationId: state.activeConversationId };
+ const tabs = state.tabs.map((t) => (t.conversationId === conversationId ? { ...t, title } : t));
+ return { tabs, activeConversationId: state.activeConversationId };
}
export function activeTab(state: TabsState): Tab | null {
- if (state.activeConversationId === null) return null;
- return state.tabs.find((t) => t.conversationId === state.activeConversationId) ?? null;
+ if (state.activeConversationId === null) return null;
+ return state.tabs.find((t) => t.conversationId === state.activeConversationId) ?? null;
}
export function deriveTitle(message: string, max: number = DEFAULT_MAX_TITLE_LENGTH): string {
- const trimmed = message.trim().replace(/\s+/g, " ");
- if (trimmed.length === 0) return DEFAULT_TITLE;
- if (trimmed.length <= max) return trimmed;
- return `${trimmed.slice(0, max)}\u2026`;
+ const trimmed = message.trim().replace(/\s+/g, " ");
+ if (trimmed.length === 0) return DEFAULT_TITLE;
+ if (trimmed.length <= max) return trimmed;
+ return `${trimmed.slice(0, max)}\u2026`;
+}
+
+/** Minimum length of a tab handle (git-style short id). */
+export const MIN_HANDLE_LENGTH = 4;
+
+/**
+ * The short "handle" shown on a tab: the shortest prefix of `conversationId`
+ * (at least `MIN_HANDLE_LENGTH` chars) that is unique among all open tabs — a
+ * git-style short id. Grows by a char only when another open tab shares the
+ * prefix, and shrinks back when that sibling closes. Pure: the id + every open
+ * id in, the handle string out. (`allIds` may include `conversationId` itself.)
+ */
+export function shortHandle(conversationId: string, allIds: readonly string[]): string {
+ const others = allIds.filter((id) => id !== conversationId);
+ for (let len = MIN_HANDLE_LENGTH; len < conversationId.length; len++) {
+ const candidate = conversationId.slice(0, len);
+ if (!others.some((id) => id.startsWith(candidate))) return candidate;
+ }
+ return conversationId;
}
diff --git a/src/features/tabs/ui.test.ts b/src/features/tabs/ui.test.ts
index 53df0be..ae2a021 100644
--- a/src/features/tabs/ui.test.ts
+++ b/src/features/tabs/ui.test.ts
@@ -1,148 +1,298 @@
-import { render, screen } from "@testing-library/svelte";
+import { fireEvent, render, screen } from "@testing-library/svelte";
import userEvent from "@testing-library/user-event";
import { describe, expect, it, vi } from "vitest";
import type { Tab } from "./tabs";
-import TabBar from "./ui/TabBar.svelte";
+import TabList from "./ui/TabList.svelte";
const sampleTabs: readonly Tab[] = [
- { conversationId: "c1", model: "openai/gpt-4", title: "First" },
- { conversationId: "c2", model: "anthropic/claude-3", title: "Second" },
- { conversationId: "c3", model: "google/gemini", title: "Third" },
+ { conversationId: "c1", model: "openai/gpt-4", title: "First", workspaceId: "default" },
+ { conversationId: "c2", model: "anthropic/claude-3", title: "Second", workspaceId: "default" },
+ { conversationId: "c3", model: "google/gemini", title: "Third", workspaceId: "default" },
];
-describe("TabBar", () => {
- it("renders one role=tab element per tab showing each title", () => {
- render(TabBar, {
- props: {
- tabs: sampleTabs,
- activeConversationId: "c1",
- onSelect: vi.fn(),
- onClose: vi.fn(),
- onNewDraft: vi.fn(),
- },
- });
-
- const tabs = screen.getAllByRole("tab");
- expect(tabs).toHaveLength(sampleTabs.length);
- expect(tabs[0]).toHaveTextContent("First");
- expect(tabs[1]).toHaveTextContent("Second");
- expect(tabs[2]).toHaveTextContent("Third");
- });
-
- it("applies tab-active to the active tab only", () => {
- render(TabBar, {
- props: {
- tabs: sampleTabs,
- activeConversationId: "c2",
- onSelect: vi.fn(),
- onClose: vi.fn(),
- onNewDraft: vi.fn(),
- },
- });
-
- const tabs = screen.getAllByRole("tab");
- expect(tabs[0]).not.toHaveClass("tab-active");
- expect(tabs[1]).toHaveClass("tab-active");
- expect(tabs[2]).not.toHaveClass("tab-active");
- });
-
- it("applies tab-active to New chat button when activeConversationId is null", () => {
- render(TabBar, {
- props: {
- tabs: sampleTabs,
- activeConversationId: null,
- onSelect: vi.fn(),
- onClose: vi.fn(),
- onNewDraft: vi.fn(),
- },
- });
-
- const newChat = screen.getByRole("button", { name: "New chat" });
- expect(newChat).toHaveClass("tab-active");
- });
-
- it("calls onSelect with the conversationId when a tab is clicked", async () => {
- const onSelect = vi.fn();
- const onClose = vi.fn();
- const user = userEvent.setup();
-
- render(TabBar, {
- props: {
- tabs: sampleTabs,
- activeConversationId: "c1",
- onSelect,
- onClose,
- onNewDraft: vi.fn(),
- },
- });
-
- const tabs = screen.getAllByRole("tab");
- const secondTab = tabs[1];
- if (!secondTab) throw new Error("second tab not found");
- await user.click(secondTab);
-
- expect(onSelect).toHaveBeenCalledTimes(1);
- expect(onSelect).toHaveBeenCalledWith("c2");
- expect(onClose).not.toHaveBeenCalled();
- });
-
- it("calls onClose when the close button is clicked and does not call onSelect", async () => {
- const onSelect = vi.fn();
- const onClose = vi.fn();
- const user = userEvent.setup();
-
- render(TabBar, {
- props: {
- tabs: sampleTabs,
- activeConversationId: "c1",
- onSelect,
- onClose,
- onNewDraft: vi.fn(),
- },
- });
-
- const closeButtons = screen.getAllByRole("button", { name: "Close tab" });
- const firstClose = closeButtons[0];
- if (!firstClose) throw new Error("first close button not found");
- await user.click(firstClose);
-
- expect(onClose).toHaveBeenCalledTimes(1);
- expect(onClose).toHaveBeenCalledWith("c1");
- expect(onSelect).not.toHaveBeenCalled();
- });
-
- it("calls onNewDraft when the New chat button is clicked", async () => {
- const onNewDraft = vi.fn();
- const user = userEvent.setup();
-
- render(TabBar, {
- props: {
- tabs: sampleTabs,
- activeConversationId: "c1",
- onSelect: vi.fn(),
- onClose: vi.fn(),
- onNewDraft,
- },
- });
-
- const newChat = screen.getByRole("button", { name: "New chat" });
- await user.click(newChat);
-
- expect(onNewDraft).toHaveBeenCalledTimes(1);
- });
-
- it("the New chat button has the sticky class", () => {
- render(TabBar, {
- props: {
- tabs: sampleTabs,
- activeConversationId: "c1",
- onSelect: vi.fn(),
- onClose: vi.fn(),
- onNewDraft: vi.fn(),
- },
- });
-
- const newChat = screen.getByRole("button", { name: "New chat" });
- expect(newChat).toHaveClass("sticky");
- });
+describe("TabList", () => {
+ it("renders one role=tab element per tab showing each title", () => {
+ render(TabList, {
+ props: {
+ tabs: sampleTabs,
+ activeConversationId: "c1",
+ onSelect: vi.fn(),
+ onClose: vi.fn(),
+ onNewDraft: vi.fn(),
+ },
+ });
+
+ const tabs = screen.getAllByRole("tab");
+ expect(tabs).toHaveLength(sampleTabs.length);
+ expect(tabs[0]).toHaveTextContent("First");
+ expect(tabs[1]).toHaveTextContent("Second");
+ expect(tabs[2]).toHaveTextContent("Third");
+ });
+
+ it("marks the active tab as aria-selected", () => {
+ render(TabList, {
+ props: {
+ tabs: sampleTabs,
+ activeConversationId: "c2",
+ onSelect: vi.fn(),
+ onClose: vi.fn(),
+ onNewDraft: vi.fn(),
+ },
+ });
+
+ const tabs = screen.getAllByRole("tab");
+ expect(tabs[0]).toHaveAttribute("aria-selected", "false");
+ expect(tabs[1]).toHaveAttribute("aria-selected", "true");
+ expect(tabs[2]).toHaveAttribute("aria-selected", "false");
+ });
+
+ it("calls onSelect with the conversationId when a tab is clicked", async () => {
+ const onSelect = vi.fn();
+ const onClose = vi.fn();
+ const user = userEvent.setup();
+
+ render(TabList, {
+ props: {
+ tabs: sampleTabs,
+ activeConversationId: "c1",
+ onSelect,
+ onClose,
+ onNewDraft: vi.fn(),
+ },
+ });
+
+ const tabs = screen.getAllByRole("tab");
+ const secondTab = tabs[1];
+ if (!secondTab) throw new Error("second tab not found");
+ await user.click(secondTab);
+
+ expect(onSelect).toHaveBeenCalledTimes(1);
+ expect(onSelect).toHaveBeenCalledWith("c2");
+ expect(onClose).not.toHaveBeenCalled();
+ });
+
+ it("calls onClose when the close button is clicked and does not call onSelect", async () => {
+ const onSelect = vi.fn();
+ const onClose = vi.fn();
+ const user = userEvent.setup();
+
+ render(TabList, {
+ props: {
+ tabs: sampleTabs,
+ activeConversationId: "c1",
+ onSelect,
+ onClose,
+ onNewDraft: vi.fn(),
+ },
+ });
+
+ const closeButtons = screen.getAllByRole("button", { name: "Close tab" });
+ const firstClose = closeButtons[0];
+ if (!firstClose) throw new Error("first close button not found");
+ await user.click(firstClose);
+
+ expect(onClose).toHaveBeenCalledTimes(1);
+ expect(onClose).toHaveBeenCalledWith("c1");
+ expect(onSelect).not.toHaveBeenCalled();
+ });
+
+ it("calls onNewDraft when the New chat button is clicked", async () => {
+ const onNewDraft = vi.fn();
+ const user = userEvent.setup();
+
+ render(TabList, {
+ props: {
+ tabs: sampleTabs,
+ activeConversationId: "c1",
+ onSelect: vi.fn(),
+ onClose: vi.fn(),
+ onNewDraft,
+ },
+ });
+
+ const newChat = screen.getByRole("button", { name: "New chat" });
+ await user.click(newChat);
+
+ expect(onNewDraft).toHaveBeenCalledTimes(1);
+ });
+
+ it("shows visible 'New Chat' text when activeConversationId is null", () => {
+ render(TabList, {
+ props: {
+ tabs: sampleTabs,
+ activeConversationId: null,
+ onSelect: vi.fn(),
+ onClose: vi.fn(),
+ onNewDraft: vi.fn(),
+ },
+ });
+
+ const newChat = screen.getByRole("button", { name: "New chat" });
+ expect(newChat).toHaveTextContent("New Chat");
+ });
+
+ it("does not show 'New Chat' text when a real tab is active", () => {
+ render(TabList, {
+ props: {
+ tabs: sampleTabs,
+ activeConversationId: "c1",
+ onSelect: vi.fn(),
+ onClose: vi.fn(),
+ onNewDraft: vi.fn(),
+ },
+ });
+
+ const newChat = screen.getByRole("button", { name: "New chat" });
+ expect(newChat).not.toHaveTextContent("New Chat");
+ });
+
+ it("renders a short-handle tab ID badge (shortest unique prefix) per tab", () => {
+ const tabs: readonly Tab[] = [
+ { conversationId: "3f9a1b2c-1111", model: "m", title: "Alpha", workspaceId: "default" },
+ { conversationId: "7c2db4e5-2222", model: "m", title: "Beta", workspaceId: "default" },
+ ];
+ render(TabList, {
+ props: {
+ tabs,
+ activeConversationId: "3f9a1b2c-1111",
+ onSelect: vi.fn(),
+ onClose: vi.fn(),
+ onNewDraft: vi.fn(),
+ },
+ });
+
+ expect(screen.getByText("3f9a")).toBeInTheDocument();
+ expect(screen.getByText("7c2d")).toBeInTheDocument();
+ });
+
+ it("renders each tab as a single vertical row (flex-col list, not a horizontal strip)", () => {
+ render(TabList, {
+ props: {
+ tabs: sampleTabs,
+ activeConversationId: "c1",
+ onSelect: vi.fn(),
+ onClose: vi.fn(),
+ onNewDraft: vi.fn(),
+ },
+ });
+
+ // The scroll region containing the tab rows is a vertical flex column.
+ const tabs = screen.getAllByRole("tab");
+ expect(tabs.length).toBeGreaterThan(0);
+ const region = tabs[0]?.parentElement;
+ expect(region).toHaveClass("flex-col");
+ });
+
+ it("fixes the tab list region at 40vh so a long set scrolls internally", () => {
+ render(TabList, {
+ props: {
+ tabs: sampleTabs,
+ activeConversationId: "c1",
+ onSelect: vi.fn(),
+ onClose: vi.fn(),
+ onNewDraft: vi.fn(),
+ },
+ });
+
+ const tabs = screen.getAllByRole("tab");
+ const region = tabs[0]?.parentElement;
+ expect(region).toHaveClass("h-[40vh]");
+ expect(region).toHaveClass("overflow-y-auto");
+ });
+
+ it("calls onRename when a tab title is double-clicked and committed with Enter", async () => {
+ const onRename = vi.fn();
+ const user = userEvent.setup();
+
+ render(TabList, {
+ props: {
+ tabs: sampleTabs,
+ activeConversationId: "c1",
+ onSelect: vi.fn(),
+ onClose: vi.fn(),
+ onNewDraft: vi.fn(),
+ onRename,
+ },
+ });
+
+ const titleButtons = screen.getAllByRole("button");
+ // The inline-rename trigger is the title span (role=button) — find the one
+ // whose text matches the first tab's title.
+ const titleButton = titleButtons.find((b) => b.textContent === "First");
+ if (!titleButton) throw new Error("title button not found");
+ await user.dblClick(titleButton);
+
+ const input = screen.getByRole("textbox");
+ await user.clear(input);
+ await user.type(input, "Renamed{Enter}");
+
+ expect(onRename).toHaveBeenCalledTimes(1);
+ expect(onRename).toHaveBeenCalledWith("c1", "Renamed");
+ });
+
+ it("copies the conversation id to the clipboard and highlights the badge text when clicked", async () => {
+ const writeText = vi.fn().mockResolvedValue(undefined);
+ Object.defineProperty(navigator, "clipboard", {
+ value: { writeText },
+ configurable: true,
+ });
+
+ const onSelect = vi.fn();
+
+ render(TabList, {
+ props: {
+ tabs: sampleTabs,
+ activeConversationId: "c1",
+ onSelect,
+ onClose: vi.fn(),
+ onNewDraft: vi.fn(),
+ },
+ });
+
+ const idBadge = screen.getByRole("button", { name: "Copy conversation id c1" });
+ await fireEvent.click(idBadge);
+
+ expect(writeText).toHaveBeenCalledTimes(1);
+ expect(writeText).toHaveBeenCalledWith("c1");
+ // The badge text is NOT swapped (no width shift) — the highlight (selection)
+ // is the only indicator.
+ expect(idBadge).toHaveTextContent("c1");
+ expect(idBadge).not.toHaveTextContent("Copied");
+ // The badge text is selected (highlighted) as the copy indicator.
+ const selection = window.getSelection();
+ expect(selection?.toString()).toBe("c1");
+ // Clicking the ID must NOT switch tabs (the badge stops propagation).
+ expect(onSelect).not.toHaveBeenCalled();
+ });
+
+ it("shows a loading RING for a 'queued' tab and loading DOTS for an 'active' tab", () => {
+ render(TabList, {
+ props: {
+ tabs: sampleTabs,
+ activeConversationId: "c1",
+ statusFor: (id: string) => (id === "c1" ? "queued" : id === "c2" ? "active" : undefined),
+ onSelect: vi.fn(),
+ onClose: vi.fn(),
+ onNewDraft: vi.fn(),
+ },
+ });
+
+ // c1 is queued → a ring (DaisyUI `loading-ring`), labeled "Queued".
+ const queuedRing = screen.getByLabelText("Queued");
+ expect(queuedRing.className).toContain("loading-ring");
+ expect(queuedRing.closest('[role="tab"]')).toHaveTextContent("First");
+
+ const tabs = screen.getAllByRole("tab");
+ expect(tabs).toHaveLength(3);
+ const activeTab = tabs[1];
+ const idleTab = tabs[2];
+ if (activeTab === undefined || idleTab === undefined) throw new Error("missing tabs");
+
+ // c2 is active → loading dots (NOT a ring).
+ expect(activeTab.querySelector(".loading-dots")).not.toBeNull();
+ expect(activeTab.querySelector(".loading-ring")).toBeNull();
+
+ // c3 has no status → no spinner at all.
+ expect(idleTab.querySelector(".loading")).toBeNull();
+ });
});
diff --git a/src/features/tabs/ui/TabBar.svelte b/src/features/tabs/ui/TabBar.svelte
deleted file mode 100644
index 76fab05..0000000
--- a/src/features/tabs/ui/TabBar.svelte
+++ /dev/null
@@ -1,54 +0,0 @@
-<script lang="ts">
- import type { Tab } from "../tabs";
-
- let {
- tabs,
- activeConversationId,
- onSelect,
- onClose,
- onNewDraft,
- }: {
- tabs: readonly Tab[];
- activeConversationId: string | null;
- onSelect: (conversationId: string) => void;
- onClose: (conversationId: string) => void;
- onNewDraft: () => void;
- } = $props();
-</script>
-
-<div class="overflow-x-auto border-b border-base-300">
- <div class="tabs tabs-border min-w-max">
- {#each tabs as tab (tab.conversationId)}
- <div
- class="tab"
- class:tab-active={tab.conversationId === activeConversationId}
- role="tab"
- tabindex="0"
- onclick={() => onSelect(tab.conversationId)}
- onkeydown={(e) => {
- if (e.key === "Enter") onSelect(tab.conversationId);
- }}
- >
- <span class="max-w-[120px] truncate">{tab.title}</span>
- <button
- class="btn btn-ghost btn-xs ml-1"
- aria-label="Close tab"
- onclick={(e) => {
- e.stopPropagation();
- onClose(tab.conversationId);
- }}
- >
- &times;
- </button>
- </div>
- {/each}
- <button
- class="tab sticky right-0 z-10 bg-base-200 shadow-[-2px_0_4px_-1px_rgba(0,0,0,0.2)]"
- class:tab-active={activeConversationId === null}
- aria-label="New chat"
- onclick={() => onNewDraft()}
- >
- +
- </button>
- </div>
-</div>
diff --git a/src/features/tabs/ui/TabList.svelte b/src/features/tabs/ui/TabList.svelte
new file mode 100644
index 0000000..6d85065
--- /dev/null
+++ b/src/features/tabs/ui/TabList.svelte
@@ -0,0 +1,183 @@
+<script lang="ts">
+ import type { Tab } from "../tabs";
+ import { shortHandle } from "../tabs";
+
+ let {
+ tabs,
+ activeConversationId,
+ statusFor,
+ onSelect,
+ onClose,
+ onNewDraft,
+ onRename,
+ }: {
+ tabs: readonly Tab[];
+ activeConversationId: string | null;
+ /** Returns the conversation's lifecycle status, or undefined when unknown. */
+ statusFor?: (conversationId: string) => string | undefined;
+ onSelect: (conversationId: string) => void;
+ onClose: (conversationId: string) => void;
+ onNewDraft: () => void;
+ onRename?: (conversationId: string, title: string) => void;
+ } = $props();
+
+ // Git-style short handle (shortest unique prefix) per open tab — the visible
+ // "tab ID". Derived from the set of open conversation ids; pure helper.
+ const handles = $derived.by(() => {
+ const ids = tabs.map((t) => t.conversationId);
+ const map = new Map<string, string>();
+ for (const id of ids) map.set(id, shortHandle(id, ids));
+ return map;
+ });
+
+ // Inline rename: double-click a tab's title to edit, Enter/blur to save.
+ let editingId = $state<string | null>(null);
+ let editValue = $state("");
+ let editEl = $state<HTMLInputElement>();
+
+ function startRename(tab: Tab): void {
+ if (onRename === undefined) return;
+ editingId = tab.conversationId;
+ editValue = tab.title;
+ // Focus the input after it renders.
+ queueMicrotask(() => editEl?.focus());
+ }
+
+ function commitRename(): void {
+ const id = editingId;
+ if (id !== null && onRename !== undefined) {
+ const trimmed = editValue.trim();
+ if (trimmed.length > 0) onRename(id, trimmed);
+ }
+ editingId = null;
+ }
+
+ function cancelRename(): void {
+ editingId = null;
+ }
+
+ // Click-to-copy the agent (conversation) id: clicking the ID badge copies the
+ // FULL conversationId to the clipboard (the stable, useful id — the badge
+ // only shows a short prefix) and highlights the badge text as feedback. The
+ // highlight (text selection) is the indicator — no text is swapped, so the
+ // badge keeps a stable width. If the clipboard write fails, the selection is
+ // already in place so the user can Ctrl+C the text manually.
+ async function copyId(conversationId: string, el: HTMLElement): Promise<void> {
+ selectText(el);
+ const clipboard = navigator.clipboard;
+ if (clipboard === undefined) return;
+ try {
+ await clipboard.writeText(conversationId);
+ } catch {
+ // Selection already lets the user copy manually.
+ }
+ }
+
+ function selectText(el: HTMLElement): void {
+ const range = document.createRange();
+ range.selectNodeContents(el);
+ const selection = window.getSelection();
+ selection?.removeAllRanges();
+ selection?.addRange(range);
+ }
+</script>
+
+<div class="flex flex-col gap-2">
+ <!-- Single-column vertical tab list. Fixed at 40% of the viewport height so a
+ long tab set scrolls inside this region instead of growing the whole sidebar. -->
+ <div class="flex h-[40vh] flex-col gap-1 overflow-y-auto pr-1">
+ {#each tabs as tab (tab.conversationId)}
+ <div
+ class="flex items-center gap-1.5 rounded px-2 py-1.5 text-sm hover:bg-base-300"
+ class:bg-base-300={tab.conversationId === activeConversationId}
+ role="tab"
+ tabindex="0"
+ aria-selected={tab.conversationId === activeConversationId}
+ title={tab.title}
+ onclick={() => onSelect(tab.conversationId)}
+ onkeydown={(e) => {
+ if (e.key === "Enter") onSelect(tab.conversationId);
+ }}
+ >
+ <button
+ type="button"
+ class="shrink-0 rounded bg-base-300 px-1 py-0.5 font-mono text-[10px] leading-none text-base-content/60 transition-colors hover:bg-primary hover:text-primary-content"
+ data-copy-id={tab.conversationId}
+ title="Click to copy conversation id"
+ aria-label={`Copy conversation id ${tab.conversationId}`}
+ onclick={(e) => {
+ e.stopPropagation();
+ void copyId(tab.conversationId, e.currentTarget);
+ }}
+ >
+ {handles.get(tab.conversationId) ?? tab.conversationId}
+ </button>
+ {#if editingId === tab.conversationId}
+ <input
+ bind:this={editEl}
+ bind:value={editValue}
+ class="min-w-0 flex-1 rounded bg-base-100 px-1 py-0.5 text-left text-sm outline outline-1 outline-primary"
+ onclick={(e) => e.stopPropagation()}
+ onkeydown={(e) => {
+ if (e.key === "Enter") {
+ e.preventDefault();
+ commitRename();
+ } else if (e.key === "Escape") {
+ e.preventDefault();
+ cancelRename();
+ }
+ }}
+ onblur={commitRename}
+ />
+ {:else}
+ <span
+ class="min-w-0 flex-1 cursor-pointer truncate text-left"
+ role="button"
+ tabindex="-1"
+ title={tab.title}
+ ondblclick={(e) => {
+ e.stopPropagation();
+ startRename(tab);
+ }}
+ >
+ {tab.title}
+ </span>
+ {/if}
+ {#if statusFor?.(tab.conversationId) === "queued"}
+ <!-- Waiting for a concurrency slot — a ring (vs the dots of `active`). -->
+ <span
+ class="loading loading-ring loading-xs shrink-0 text-primary"
+ aria-label="Queued"
+ title="Waiting for a concurrency slot"
+ ></span>
+ {:else if statusFor?.(tab.conversationId) === "active"}
+ <span class="loading loading-dots loading-xs shrink-0 text-primary"></span>
+ {/if}
+ <button
+ class="btn btn-ghost btn-xs shrink-0"
+ aria-label="Close tab"
+ onclick={(e) => {
+ e.stopPropagation();
+ onClose(tab.conversationId);
+ }}
+ >
+ &times;
+ </button>
+ </div>
+ {/each}
+ </div>
+
+ <button
+ type="button"
+ class="btn btn-ghost btn-sm w-full border border-base-300"
+ class:btn-primary={activeConversationId === null}
+ aria-label="New chat"
+ onclick={() => onNewDraft()}
+ >
+ {#if activeConversationId === null}
+ New Chat
+ {:else}
+ + New chat
+ {/if}
+ </button>
+</div>
diff --git a/src/features/views/index.ts b/src/features/views/index.ts
new file mode 100644
index 0000000..164241d
--- /dev/null
+++ b/src/features/views/index.ts
@@ -0,0 +1,15 @@
+export {
+ addPanel,
+ initialPanels,
+ type PanelsState,
+ removePanel,
+ selectKind,
+ type ViewPanel,
+} from "./logic/panels";
+export { default as ViewSidebar } from "./ui/ViewSidebar.svelte";
+
+/** Public module manifest — aggregated by the shell's "Loaded Modules" view. */
+export const manifest = {
+ name: "views",
+ description: "Sidebar view panels (dropdown picker + add / remove)",
+} as const;
diff --git a/src/features/views/logic/panels.test.ts b/src/features/views/logic/panels.test.ts
new file mode 100644
index 0000000..aadbf5e
--- /dev/null
+++ b/src/features/views/logic/panels.test.ts
@@ -0,0 +1,55 @@
+import { describe, expect, it } from "vitest";
+import { addPanel, initialPanels, removePanel, selectKind } from "./panels";
+
+describe("view panels reducer", () => {
+ it("seeds one empty panel by default", () => {
+ const s = initialPanels();
+ expect(s.panels).toHaveLength(1);
+ expect(s.panels[0]?.kind).toBeNull();
+ });
+
+ it("seeds a panel per provided kind, in order, with unique ids", () => {
+ const s = initialPanels(["surfaces", null]);
+ expect(s.panels.map((p) => p.kind)).toEqual(["surfaces", null]);
+ expect(new Set(s.panels.map((p) => p.id)).size).toBe(2);
+ });
+
+ it("addPanel appends an empty panel with a fresh id", () => {
+ const seed = initialPanels(["surfaces"]);
+ const s = addPanel(seed);
+ expect(s.panels).toHaveLength(2);
+ expect(s.panels[1]?.kind).toBeNull();
+ expect(s.panels[1]?.id).not.toBe(s.panels[0]?.id);
+ });
+
+ it("addPanel can seed a kind", () => {
+ const s = addPanel(initialPanels([null]), "surfaces");
+ expect(s.panels[1]?.kind).toBe("surfaces");
+ });
+
+ it("removePanel drops the matching id only", () => {
+ const seed = initialPanels(["surfaces", null]);
+ const firstId = seed.panels[0]?.id ?? -1;
+ const s = removePanel(seed, firstId);
+ expect(s.panels).toHaveLength(1);
+ expect(s.panels[0]?.kind).toBeNull();
+ });
+
+ it("selectKind updates only the targeted panel", () => {
+ const seed = initialPanels([null, null]);
+ const targetId = seed.panels[1]?.id ?? -1;
+ const s = selectKind(seed, targetId, "surfaces");
+ expect(s.panels[0]?.kind).toBeNull();
+ expect(s.panels[1]?.kind).toBe("surfaces");
+ });
+
+ it("is pure — never mutates the input state", () => {
+ const seed = initialPanels(["surfaces"]);
+ const snapshot = JSON.stringify(seed);
+ const id = seed.panels[0]?.id ?? -1;
+ addPanel(seed);
+ removePanel(seed, id);
+ selectKind(seed, id, null);
+ expect(JSON.stringify(seed)).toBe(snapshot);
+ });
+});
diff --git a/src/features/views/logic/panels.ts b/src/features/views/logic/panels.ts
new file mode 100644
index 0000000..fa22be6
--- /dev/null
+++ b/src/features/views/logic/panels.ts
@@ -0,0 +1,49 @@
+/**
+ * Pure reducer for the view sidebar's panel stack.
+ *
+ * A "view" is the RESERVED Dispatch sidebar affordance (see GLOSSARY): the user
+ * stacks panels, each showing one view KIND chosen from a dropdown, and adds
+ * more with a `+` button. This module is the pure model — zero DOM, zero Svelte.
+ * The component (`ViewSidebar.svelte`) is a thin runes wrapper over it.
+ *
+ * `id` is a per-session stable key for `{#each}` only; it is never persisted.
+ */
+
+export interface ViewPanel {
+ readonly id: number;
+ /** Selected view-kind id, or `null` while the panel still reads "Select a view". */
+ readonly kind: string | null;
+}
+
+export interface PanelsState {
+ readonly panels: readonly ViewPanel[];
+ readonly nextId: number;
+}
+
+/**
+ * Seed state. Each entry becomes one panel in order; pass `["surfaces"]` to open
+ * a single preset panel, or `[null]` for one empty "Select a view" panel.
+ */
+export function initialPanels(kinds: readonly (string | null)[] = [null]): PanelsState {
+ let nextId = 0;
+ const panels = kinds.map((kind) => ({ id: nextId++, kind }));
+ return { panels, nextId };
+}
+
+export function addPanel(state: PanelsState, kind: string | null = null): PanelsState {
+ return {
+ panels: [...state.panels, { id: state.nextId, kind }],
+ nextId: state.nextId + 1,
+ };
+}
+
+export function removePanel(state: PanelsState, id: number): PanelsState {
+ return { ...state, panels: state.panels.filter((p) => p.id !== id) };
+}
+
+export function selectKind(state: PanelsState, id: number, kind: string | null): PanelsState {
+ return {
+ ...state,
+ panels: state.panels.map((p) => (p.id === id ? { ...p, kind } : p)),
+ };
+}
diff --git a/src/features/views/ui/ViewSidebar.svelte b/src/features/views/ui/ViewSidebar.svelte
new file mode 100644
index 0000000..e9e8682
--- /dev/null
+++ b/src/features/views/ui/ViewSidebar.svelte
@@ -0,0 +1,95 @@
+<script lang="ts">
+ import { type Snippet, untrack } from "svelte";
+ import {
+ addPanel,
+ initialPanels,
+ type PanelsState,
+ removePanel,
+ selectKind,
+ } from "../logic/panels";
+
+ interface ViewKind {
+ readonly id: string;
+ readonly label: string;
+ }
+
+ let {
+ kinds,
+ content,
+ initial,
+ onChange,
+ }: {
+ /** The view kinds offered in every panel's dropdown. */
+ kinds: readonly ViewKind[];
+ /** Renders a panel body for the given (non-null) view-kind id. */
+ content: Snippet<[string]>;
+ /** Optional seed of panel kinds; defaults to one panel of the first kind. */
+ initial?: readonly (string | null)[];
+ /** Called whenever the panel layout changes (add/remove/select). */
+ onChange?: (kinds: readonly (string | null)[]) => void;
+ } = $props();
+
+ // Local UI composition state, owned by this unit and folded through the pure
+ // reducer — never reached from elsewhere (no ambient store). Seeded ONCE from
+ // the props (untrack makes that one-time read explicit, not reactive).
+ let state = $state<PanelsState>(untrack(() => initialPanels(initial ?? [kinds[0]?.id ?? null])));
+
+ function notify(): void {
+ onChange?.(state.panels.map((p) => p.kind));
+ }
+</script>
+
+<div class="flex min-h-0 flex-col gap-2">
+ {#each state.panels as panel, idx (panel.id)}
+ <div class="flex flex-col rounded-lg bg-base-200 p-3">
+ <div class="flex items-center gap-1">
+ <select
+ class="select select-bordered select-sm flex-1"
+ aria-label="Select a view"
+ value={panel.kind ?? ""}
+ onchange={(e) => {
+ const v = e.currentTarget.value;
+ state = selectKind(state, panel.id, v === "" ? null : v);
+ notify();
+ }}
+ >
+ <option value="" disabled>Select a view</option>
+ {#each kinds as kind (kind.id)}
+ <option value={kind.id}>{kind.label}</option>
+ {/each}
+ </select>
+ {#if idx > 0}
+ <button
+ type="button"
+ class="btn btn-square btn-ghost btn-sm shrink-0"
+ aria-label="Remove view"
+ onclick={() => {
+ state = removePanel(state, panel.id);
+ notify();
+ }}
+ >
+ ✕
+ </button>
+ {/if}
+ </div>
+
+ {#if panel.kind !== null}
+ <div class="mt-2">
+ {@render content(panel.kind)}
+ </div>
+ {/if}
+ </div>
+ {/each}
+
+ <button
+ type="button"
+ class="btn w-full border-none bg-base-200 text-lg hover:bg-base-300"
+ aria-label="Add view"
+ onclick={() => {
+ state = addPanel(state);
+ notify();
+ }}
+ >
+ +
+ </button>
+</div>
diff --git a/src/features/views/ui/ViewSidebar.test.ts b/src/features/views/ui/ViewSidebar.test.ts
new file mode 100644
index 0000000..0618506
--- /dev/null
+++ b/src/features/views/ui/ViewSidebar.test.ts
@@ -0,0 +1,58 @@
+import { render, screen } from "@testing-library/svelte";
+import userEvent from "@testing-library/user-event";
+import { createRawSnippet } from "svelte";
+import { describe, expect, it } from "vitest";
+import ViewSidebar from "./ViewSidebar.svelte";
+
+const kinds = [
+ { id: "surfaces", label: "Surfaces" },
+ { id: "tasks", label: "Tasks" },
+];
+
+// A raw snippet that echoes the kind it was rendered for, so tests can assert
+// which view-kind content each panel shows.
+const content = createRawSnippet<[string]>((kind) => ({
+ render: () => `<div data-testid="view-content">kind:${kind()}</div>`,
+}));
+
+describe("ViewSidebar", () => {
+ it("opens one panel seeded with the first kind and renders its content", () => {
+ render(ViewSidebar, { props: { kinds, content } });
+ expect(screen.getAllByRole("combobox")).toHaveLength(1);
+ expect(screen.getByTestId("view-content")).toHaveTextContent("kind:surfaces");
+ });
+
+ it("the first panel has no remove button", () => {
+ render(ViewSidebar, { props: { kinds, content } });
+ expect(screen.queryByRole("button", { name: "Remove view" })).toBeNull();
+ });
+
+ it("the add button appends a new empty panel", async () => {
+ const user = userEvent.setup();
+ render(ViewSidebar, { props: { kinds, content } });
+ await user.click(screen.getByRole("button", { name: "Add view" }));
+ expect(screen.getAllByRole("combobox")).toHaveLength(2);
+ // the new panel is empty → only the first panel renders content
+ expect(screen.getAllByTestId("view-content")).toHaveLength(1);
+ });
+
+ it("non-first panels can be removed", async () => {
+ const user = userEvent.setup();
+ render(ViewSidebar, { props: { kinds, content } });
+ await user.click(screen.getByRole("button", { name: "Add view" }));
+ const removeButtons = screen.getAllByRole("button", { name: "Remove view" });
+ expect(removeButtons).toHaveLength(1);
+ const target = removeButtons[0];
+ if (target === undefined) throw new Error("expected a remove button");
+ await user.click(target);
+ expect(screen.getAllByRole("combobox")).toHaveLength(1);
+ });
+
+ it("selecting a kind renders that kind's content", async () => {
+ const user = userEvent.setup();
+ render(ViewSidebar, { props: { kinds, content, initial: [null] } });
+ expect(screen.queryByTestId("view-content")).toBeNull();
+ await user.selectOptions(screen.getByRole("combobox"), "tasks");
+ expect(screen.getByTestId("view-content")).toHaveTextContent("kind:tasks");
+ });
+});
diff --git a/src/features/vision/index.ts b/src/features/vision/index.ts
new file mode 100644
index 0000000..6956d75
--- /dev/null
+++ b/src/features/vision/index.ts
@@ -0,0 +1,30 @@
+export type {
+ CompactionModelOption,
+ ImageLimitParse,
+ LoadVisionSettings,
+ LoadVisionSettingsResult,
+ SaveVisionSettings,
+ SaveVisionSettingsResult,
+ VisionSettings,
+ VisionSettingsPatch,
+} from "./logic/view-model";
+export {
+ AUTO_COMPACTION_MODEL,
+ compactionModelChanged,
+ compactionModelFromValue,
+ compactionModelOptions,
+ DEFAULT_IMAGE_LIMIT,
+ imageLimitChanged,
+ imageLimitLabel,
+ MAX_IMAGE_LIMIT,
+ normalizeVisionSettings,
+ parseImageLimit,
+ selectedCompactionValue,
+} from "./logic/view-model";
+export { default as VisionSettingsView } from "./ui/VisionSettingsView.svelte";
+
+/** Public module manifest — aggregated by the shell's "Loaded Modules" view. */
+export const manifest = {
+ name: "vision",
+ description: "Global vision settings (image compaction limit + model)",
+} as const;
diff --git a/src/features/vision/logic/view-model.test.ts b/src/features/vision/logic/view-model.test.ts
new file mode 100644
index 0000000..b1db822
--- /dev/null
+++ b/src/features/vision/logic/view-model.test.ts
@@ -0,0 +1,198 @@
+import type { ModelMetadata } from "@dispatch/transport-contract";
+import { describe, expect, it } from "vitest";
+import {
+ AUTO_COMPACTION_MODEL,
+ compactionModelChanged,
+ compactionModelFromValue,
+ compactionModelOptions,
+ DEFAULT_IMAGE_LIMIT,
+ imageLimitChanged,
+ imageLimitLabel,
+ MAX_IMAGE_LIMIT,
+ normalizeVisionSettings,
+ parseImageLimit,
+ selectedCompactionValue,
+} from "./view-model";
+
+describe("normalizeVisionSettings", () => {
+ it("returns the value as-is for a well-formed body", () => {
+ expect(normalizeVisionSettings({ imageLimit: 5, compactionModel: "kimi/k2" })).toEqual({
+ imageLimit: 5,
+ compactionModel: "kimi/k2",
+ });
+ });
+
+ it("coerces a null compactionModel to null", () => {
+ expect(normalizeVisionSettings({ imageLimit: 10, compactionModel: null })).toEqual({
+ imageLimit: 10,
+ compactionModel: null,
+ });
+ });
+
+ it("defaults imageLimit when absent or non-numeric", () => {
+ expect(normalizeVisionSettings({ compactionModel: "kimi/k2" })).toEqual({
+ imageLimit: DEFAULT_IMAGE_LIMIT,
+ compactionModel: "kimi/k2",
+ });
+ expect(normalizeVisionSettings({ imageLimit: "oops", compactionModel: null })).toEqual({
+ imageLimit: DEFAULT_IMAGE_LIMIT,
+ compactionModel: null,
+ });
+ });
+
+ it("floors a fractional imageLimit", () => {
+ expect(normalizeVisionSettings({ imageLimit: 7.9, compactionModel: null }).imageLimit).toBe(7);
+ });
+
+ it("defaults for a null/non-object body (never crashes)", () => {
+ expect(normalizeVisionSettings(null)).toEqual({
+ imageLimit: DEFAULT_IMAGE_LIMIT,
+ compactionModel: null,
+ });
+ expect(normalizeVisionSettings("nope")).toEqual({
+ imageLimit: DEFAULT_IMAGE_LIMIT,
+ compactionModel: null,
+ });
+ });
+
+ it("treats a negative imageLimit as the default", () => {
+ expect(normalizeVisionSettings({ imageLimit: -3, compactionModel: null }).imageLimit).toBe(
+ DEFAULT_IMAGE_LIMIT,
+ );
+ });
+
+ it("treats an empty compactionModel string as null", () => {
+ expect(
+ normalizeVisionSettings({ imageLimit: 10, compactionModel: "" }).compactionModel,
+ ).toBeNull();
+ });
+});
+
+describe("parseImageLimit", () => {
+ it("parses a non-negative integer", () => {
+ expect(parseImageLimit("5")).toEqual({ ok: true, value: 5 });
+ expect(parseImageLimit("0")).toEqual({ ok: true, value: 0 });
+ });
+
+ it("floors a fractional value", () => {
+ expect(parseImageLimit("7.9")).toEqual({ ok: true, value: 7 });
+ });
+
+ it("trims whitespace", () => {
+ expect(parseImageLimit(" 12 ")).toEqual({ ok: true, value: 12 });
+ });
+
+ it("errors on empty input", () => {
+ expect(parseImageLimit("")).toEqual({ ok: false, error: "Enter a number." });
+ });
+
+ it("errors on non-numeric input", () => {
+ expect(parseImageLimit("lots").ok).toBe(false);
+ });
+
+ it("errors on a negative value", () => {
+ expect(parseImageLimit("-1").ok).toBe(false);
+ });
+
+ it("errors when above the max", () => {
+ expect(parseImageLimit(String(MAX_IMAGE_LIMIT + 1)).ok).toBe(false);
+ });
+
+ it("accepts the max", () => {
+ expect(parseImageLimit(String(MAX_IMAGE_LIMIT))).toEqual({ ok: true, value: MAX_IMAGE_LIMIT });
+ });
+});
+
+describe("imageLimitChanged", () => {
+ it("is true when the typed value differs after normalization", () => {
+ expect(imageLimitChanged("5", 10)).toBe(true);
+ });
+
+ it("is false when equal", () => {
+ expect(imageLimitChanged("10", 10)).toBe(false);
+ });
+
+ it("is false for invalid input", () => {
+ expect(imageLimitChanged("abc", 10)).toBe(false);
+ expect(imageLimitChanged("", 10)).toBe(false);
+ });
+
+ it("compares after flooring", () => {
+ expect(imageLimitChanged("7.9", 7)).toBe(false);
+ });
+});
+
+describe("compactionModelOptions", () => {
+ const modelInfo: Record<string, ModelMetadata> = {
+ "kimi/k2": { vision: true },
+ "kimi/k1.5": { vision: true },
+ "umans/glm-5.2": { vision: false },
+ "openai/gpt-4": { contextWindow: 128000 },
+ };
+
+ it("includes the Auto option first", () => {
+ const opts = compactionModelOptions([], {});
+ expect(opts).toHaveLength(1);
+ expect(opts[0]?.auto).toBe(true);
+ expect(opts[0]?.value).toBe(AUTO_COMPACTION_MODEL);
+ });
+
+ it("includes only vision-capable models, in catalog order", () => {
+ const models = ["umans/glm-5.2", "kimi/k2", "openai/gpt-4", "kimi/k1.5"];
+ const opts = compactionModelOptions(models, modelInfo);
+ expect(opts.map((o) => o.label)).toEqual(["Auto (server-selected)", "kimi/k2", "kimi/k1.5"]);
+ });
+
+ it("excludes non-vision models even with metadata present", () => {
+ const opts = compactionModelOptions(["umans/glm-5.2"], modelInfo);
+ expect(opts).toHaveLength(1); // only Auto
+ });
+});
+
+describe("compactionModel value round-trip", () => {
+ it("selectedCompactionValue maps null to the auto sentinel", () => {
+ expect(selectedCompactionValue(null)).toBe(AUTO_COMPACTION_MODEL);
+ });
+
+ it("selectedCompactionValue maps a model name to itself", () => {
+ expect(selectedCompactionValue("kimi/k2")).toBe("kimi/k2");
+ });
+
+ it("compactionModelFromValue maps the auto sentinel back to null", () => {
+ expect(compactionModelFromValue(AUTO_COMPACTION_MODEL)).toBeNull();
+ });
+
+ it("compactionModelFromValue maps a model name to itself", () => {
+ expect(compactionModelFromValue("kimi/k2")).toBe("kimi/k2");
+ });
+});
+
+describe("compactionModelChanged", () => {
+ it("is true when the value maps to a different model", () => {
+ expect(compactionModelChanged("kimi/k2", null)).toBe(true);
+ expect(compactionModelChanged(AUTO_COMPACTION_MODEL, "kimi/k2")).toBe(true);
+ });
+
+ it("is false when equal (null vs auto, or same model)", () => {
+ expect(compactionModelChanged(AUTO_COMPACTION_MODEL, null)).toBe(false);
+ expect(compactionModelChanged("kimi/k2", "kimi/k2")).toBe(false);
+ });
+});
+
+describe("imageLimitLabel", () => {
+ it("labels null as loading", () => {
+ expect(imageLimitLabel(null)).toBe("Loading…");
+ });
+
+ it("labels 0 as disabled", () => {
+ expect(imageLimitLabel(0)).toBe("0 (compaction disabled)");
+ });
+
+ it("labels the default with (default)", () => {
+ expect(imageLimitLabel(DEFAULT_IMAGE_LIMIT)).toBe(`${DEFAULT_IMAGE_LIMIT} (default)`);
+ });
+
+ it("labels other values plainly", () => {
+ expect(imageLimitLabel(7)).toBe("7");
+ });
+});
diff --git a/src/features/vision/logic/view-model.ts b/src/features/vision/logic/view-model.ts
new file mode 100644
index 0000000..97a7093
--- /dev/null
+++ b/src/features/vision/logic/view-model.ts
@@ -0,0 +1,189 @@
+import type { ModelMetadata } from "@dispatch/transport-contract";
+import { isVisionModel } from "../../chat";
+
+/**
+ * Pure core for the vision settings feature — zero DOM, zero effects, zero Svelte.
+ *
+ * The global vision configuration (`GET`/`PUT /settings/vision`) controls image
+ * compaction: how many native images a vision model keeps per turn before the
+ * oldest are transcribed to text (`imageLimit`), and which vision model does the
+ * transcribing (`compactionModel`, null = auto). This module is the view-model
+ * seam: typed settings, parse/validate, dirty-check, network normalization, and
+ * the vision-capable model option list. The composition root adapts the store's
+ * HTTP calls to the injected ports.
+ */
+
+// ── Types (owned locally — consumer-defines-port; the contract shapes are a
+// plain REST surface not in a shared contract package version bump, mirroring
+// the heartbeat/mcp pattern). If the backend promotes these to a shared
+// package, swap the local types for the imports + re-mirror. ──────────────
+
+/** The global vision settings (mirrors `VisionSettingsResponse`). */
+export interface VisionSettings {
+ /** Max native images per turn (default 10); 0 disables compaction. */
+ readonly imageLimit: number;
+ /** Which model transcribes old images (`<key>/<model>`), or null = auto. */
+ readonly compactionModel: string | null;
+}
+
+/** A partial update (mirrors `SetVisionSettingsRequest`). */
+export interface VisionSettingsPatch {
+ readonly imageLimit?: number;
+ readonly compactionModel?: string | null;
+}
+
+// ── Injected ports (consumer-defines-port). ───────────────────────────────────
+
+/** Outcome of loading the vision settings. */
+export type LoadVisionSettingsResult =
+ | { readonly ok: true; readonly settings: VisionSettings }
+ | { readonly ok: false; readonly error: string };
+
+/** Outcome of saving a partial vision-settings update. */
+export type SaveVisionSettingsResult =
+ | { readonly ok: true; readonly settings: VisionSettings }
+ | { readonly ok: false; readonly error: string };
+
+export type LoadVisionSettings = () => Promise<LoadVisionSettingsResult>;
+export type SaveVisionSettings = (patch: VisionSettingsPatch) => Promise<SaveVisionSettingsResult>;
+
+// ── Constants ────────────────────────────────────────────────────────────────
+
+/** The backend's default image limit when none is persisted. */
+export const DEFAULT_IMAGE_LIMIT = 10;
+/** Upper bound for the image limit input (defensive — the backend owns real clamping). */
+export const MAX_IMAGE_LIMIT = 1000;
+
+// ── Network normalization (pure; coerces untyped JSON at the seam). ──────────
+
+/**
+ * Coerce an untyped JSON body (from `GET /settings/vision`) into a valid
+ * `VisionSettings`. A malformed/partial response can never crash the renderer:
+ * `imageLimit` falls back to the default; `compactionModel` coerces to null.
+ */
+export function normalizeVisionSettings(body: unknown): VisionSettings {
+ if (body === null || typeof body !== "object") {
+ return { imageLimit: DEFAULT_IMAGE_LIMIT, compactionModel: null };
+ }
+ const raw = body as Record<string, unknown>;
+ const limitRaw = raw.imageLimit;
+ const imageLimit =
+ typeof limitRaw === "number" && Number.isFinite(limitRaw) && limitRaw >= 0
+ ? Math.floor(limitRaw)
+ : DEFAULT_IMAGE_LIMIT;
+ const modelRaw = raw.compactionModel;
+ const compactionModel = typeof modelRaw === "string" && modelRaw.length > 0 ? modelRaw : null;
+ return { imageLimit, compactionModel };
+}
+
+// ── imageLimit parse / validate ───────────────────────────────────────────────
+
+/** Result of parsing a typed image-limit string. */
+export type ImageLimitParse =
+ | { readonly ok: true; readonly value: number }
+ | { readonly ok: false; readonly error: string };
+
+/**
+ * Parse a typed image-limit string into a non-negative integer (floored,
+ * clamped to [0, MAX_IMAGE_LIMIT]). Empty or non-numeric input is an ERROR
+ * (so the UI can disable submit + message), NOT a silent default.
+ */
+export function parseImageLimit(raw: string): ImageLimitParse {
+ const trimmed = raw.trim();
+ if (trimmed.length === 0) {
+ return { ok: false, error: "Enter a number." };
+ }
+ const n = Number(trimmed);
+ if (!Number.isFinite(n) || n < 0) {
+ return { ok: false, error: "Must be 0 or a positive number." };
+ }
+ const floored = Math.floor(n);
+ if (floored > MAX_IMAGE_LIMIT) {
+ return { ok: false, error: `Must be at most ${MAX_IMAGE_LIMIT}.` };
+ }
+ return { ok: true, value: floored };
+}
+
+/**
+ * Whether saving `typed` would change the `current` image limit. A no-op save
+ * (empty/invalid, or equal) should be disabled. This is the dirty-check for the
+ * input — it must NOT mutate or clamp, only compare.
+ */
+export function imageLimitChanged(typed: string, current: number): boolean {
+ const parsed = parseImageLimit(typed);
+ if (!parsed.ok) return false;
+ return parsed.value !== current;
+}
+
+// ── compactionModel option list ───────────────────────────────────────────────
+
+/**
+ * The sentinel value for the "Auto" option (null compactionModel — the server
+ * auto-selects a vision model). Used as the `<option value>` for the auto row.
+ */
+export const AUTO_COMPACTION_MODEL = "__auto__";
+
+/** A selectable compaction-model option. */
+export interface CompactionModelOption {
+ /** The value to send (`<key>/<model>`, or `AUTO_COMPACTION_MODEL` for auto). */
+ readonly value: string;
+ /** The human-readable label. */
+ readonly label: string;
+ /** Whether this is the "Auto" sentinel. */
+ readonly auto: boolean;
+}
+
+/**
+ * Build the compaction-model dropdown options: the "Auto" entry (null) plus
+ * every vision-capable model from the catalog (those with
+ * `modelInfo[name].vision === true`), in catalog order. Non-vision models are
+ * excluded — they cannot transcribe images.
+ */
+export function compactionModelOptions(
+ models: readonly string[],
+ modelInfo: Readonly<Record<string, ModelMetadata>>,
+): CompactionModelOption[] {
+ const options: CompactionModelOption[] = [
+ { value: AUTO_COMPACTION_MODEL, label: "Auto (server-selected)", auto: true },
+ ];
+ for (const name of models) {
+ if (isVisionModel(modelInfo, name)) {
+ options.push({ value: name, label: name, auto: false });
+ }
+ }
+ return options;
+}
+
+/**
+ * The `<option value>` to mark selected for the current `compactionModel`:
+ * `AUTO_COMPACTION_MODEL` when null (auto), else the model name itself.
+ */
+export function selectedCompactionValue(compactionModel: string | null): string {
+ return compactionModel ?? AUTO_COMPACTION_MODEL;
+}
+
+/**
+ * Convert a selected `<option value>` back into a `VisionSettingsPatch`
+ * `compactionModel` (the auto sentinel → null). Returns the patch alone so the
+ * caller can merge it with other fields.
+ */
+export function compactionModelFromValue(value: string): string | null {
+ return value === AUTO_COMPACTION_MODEL ? null : value;
+}
+
+/**
+ * Whether choosing `value` would change the current `compactionModel`.
+ */
+export function compactionModelChanged(value: string, current: string | null): boolean {
+ return compactionModelFromValue(value) !== current;
+}
+
+// ── Labels ────────────────────────────────────────────────────────────────────
+
+/** A human-readable label for the current image limit (for the status line). */
+export function imageLimitLabel(imageLimit: number | null): string {
+ if (imageLimit === null) return "Loading…";
+ if (imageLimit === 0) return "0 (compaction disabled)";
+ if (imageLimit === DEFAULT_IMAGE_LIMIT) return `${imageLimit} (default)`;
+ return String(imageLimit);
+}
diff --git a/src/features/vision/ui/VisionSettingsView.svelte b/src/features/vision/ui/VisionSettingsView.svelte
new file mode 100644
index 0000000..2b4ebba
--- /dev/null
+++ b/src/features/vision/ui/VisionSettingsView.svelte
@@ -0,0 +1,192 @@
+<script lang="ts">
+ import type { ModelMetadata } from "@dispatch/transport-contract";
+ import {
+ compactionModelChanged,
+ compactionModelFromValue,
+ compactionModelOptions,
+ DEFAULT_IMAGE_LIMIT,
+ imageLimitChanged,
+ imageLimitLabel,
+ parseImageLimit,
+ selectedCompactionValue,
+ type LoadVisionSettings,
+ type SaveVisionSettings,
+ type VisionSettings,
+ } from "../logic/view-model";
+
+ let {
+ models,
+ modelInfo = {},
+ load,
+ save,
+ }: {
+ /** The model catalog (`GET /models` `models`) — for the compaction-model dropdown. */
+ models: readonly string[];
+ /** Per-model metadata — to filter the dropdown to vision-capable models. */
+ modelInfo?: Readonly<Record<string, ModelMetadata>>;
+ /** Load the global vision settings (`GET /settings/vision`). */
+ load: LoadVisionSettings;
+ /** Save a partial vision-settings update (`PUT /settings/vision`). */
+ save: SaveVisionSettings;
+ } = $props();
+
+ let settings = $state<VisionSettings | null>(null);
+ let loadError = $state<string | null>(null);
+
+ // imageLimit input state.
+ let imageLimitInput = $state("");
+ let savingImageLimit = $state(false);
+ let imageLimitError = $state<string | null>(null);
+ let imageLimitSaved = $state(false);
+
+ // compactionModel select state.
+ let compactionSaving = $state(false);
+ let compactionError = $state<string | null>(null);
+ let compactionSaved = $state(false);
+
+ // Load on mount.
+ $effect(() => {
+ void refresh();
+ });
+
+ async function refresh(): Promise<void> {
+ const result = await load();
+ if (result.ok) {
+ settings = result.settings;
+ imageLimitInput = String(result.settings.imageLimit);
+ loadError = null;
+ imageLimitError = null;
+ imageLimitSaved = false;
+ compactionError = null;
+ compactionSaved = false;
+ } else {
+ loadError = result.error;
+ }
+ }
+
+ const options = $derived(compactionModelOptions(models, modelInfo));
+ const selectedCompaction = $derived(
+ settings ? selectedCompactionValue(settings.compactionModel) : selectedCompactionValue(null),
+ );
+ const limitLabel = $derived(imageLimitLabel(settings?.imageLimit ?? null));
+
+ const canSaveImageLimit = $derived(
+ settings !== null && imageLimitChanged(imageLimitInput, settings.imageLimit),
+ );
+
+ async function handleSaveImageLimit(): Promise<void> {
+ if (settings === null || savingImageLimit) return;
+ const parsed = parseImageLimit(imageLimitInput);
+ if (!parsed.ok) {
+ imageLimitError = parsed.error;
+ imageLimitSaved = false;
+ return;
+ }
+ savingImageLimit = true;
+ imageLimitError = null;
+ imageLimitSaved = false;
+ const result = await save({ imageLimit: parsed.value });
+ savingImageLimit = false;
+ if (result.ok) {
+ settings = result.settings;
+ imageLimitInput = String(result.settings.imageLimit);
+ imageLimitSaved = true;
+ } else {
+ imageLimitError = result.error;
+ }
+ }
+
+ async function handleCompactionChange(e: Event): Promise<void> {
+ if (settings === null || compactionSaving) return;
+ const value = (e.currentTarget as HTMLSelectElement).value;
+ if (!compactionModelChanged(value, settings.compactionModel)) return;
+ compactionSaving = true;
+ compactionError = null;
+ compactionSaved = false;
+ const result = await save({ compactionModel: compactionModelFromValue(value) });
+ compactionSaving = false;
+ if (result.ok) {
+ settings = result.settings;
+ compactionSaved = true;
+ } else {
+ compactionError = result.error;
+ }
+ }
+</script>
+
+<div class="flex flex-col gap-3">
+ {#if loadError}
+ <p class="text-xs text-error">{loadError}</p>
+ {/if}
+
+ {#if settings === null && !loadError}
+ <p class="text-xs opacity-60">Loading vision settings…</p>
+ {:else if settings !== null}
+ <!-- imageLimit -->
+ <section class="flex flex-col gap-1">
+ <span class="text-xs font-semibold uppercase opacity-60">Image limit</span>
+ <div class="flex items-center gap-2">
+ <input
+ type="text"
+ inputmode="numeric"
+ class="input input-bordered input-sm w-24"
+ placeholder={String(DEFAULT_IMAGE_LIMIT)}
+ bind:value={imageLimitInput}
+ disabled={savingImageLimit}
+ aria-label="Image limit (max native images per turn)"
+ />
+ <button
+ type="button"
+ class="btn btn-sm btn-outline"
+ disabled={!canSaveImageLimit || savingImageLimit}
+ onclick={handleSaveImageLimit}
+ >
+ {#if savingImageLimit}
+ <span class="loading loading-spinner loading-xs"></span>
+ Saving…
+ {:else}
+ Save
+ {/if}
+ </button>
+ </div>
+ <p class="text-xs opacity-50">
+ Current: {limitLabel}
+ <br />
+ Max native images per turn before the oldest are transcribed to text.
+ 0 disables compaction. Default is {DEFAULT_IMAGE_LIMIT}.
+ </p>
+ {#if imageLimitError}
+ <p class="text-xs text-error">{imageLimitError}</p>
+ {:else if imageLimitSaved}
+ <p class="text-xs text-success">Saved.</p>
+ {/if}
+ </section>
+
+ <!-- compactionModel -->
+ <section class="flex flex-col gap-1">
+ <span class="text-xs font-semibold uppercase opacity-60">Compaction model</span>
+ <select
+ class="select select-bordered select-sm w-full"
+ value={selectedCompaction}
+ disabled={compactionSaving}
+ onchange={handleCompactionChange}
+ aria-label="Compaction model (which vision model transcribes old images)"
+ >
+ {#each options as opt (opt.value)}
+ <option value={opt.value}>{opt.label}</option>
+ {/each}
+ </select>
+ {#if compactionSaving}
+ <p class="text-xs opacity-60">Saving…</p>
+ {/if}
+ <p class="text-xs opacity-50">
+ The vision-capable model that transcribes old images to text. "Auto" lets the server choose.
+ </p>
+ {#if compactionError}
+ <p class="text-xs text-error">{compactionError}</p>
+ {:else if compactionSaved}
+ <p class="text-xs text-success">Saved.</p>
+ {/if}
+ </section>
+ {/if}
+</div>
diff --git a/src/features/vision/ui/VisionSettingsView.test.ts b/src/features/vision/ui/VisionSettingsView.test.ts
new file mode 100644
index 0000000..48afc71
--- /dev/null
+++ b/src/features/vision/ui/VisionSettingsView.test.ts
@@ -0,0 +1,241 @@
+import { render, screen } from "@testing-library/svelte";
+import userEvent from "@testing-library/user-event";
+import { describe, expect, it, vi } from "vitest";
+import type {
+ LoadVisionSettingsResult,
+ SaveVisionSettingsResult,
+ VisionSettings,
+} from "../logic/view-model";
+import VisionSettingsView from "./VisionSettingsView.svelte";
+
+const SETTINGS: VisionSettings = { imageLimit: 10, compactionModel: null };
+
+function fakeLoad(settings: VisionSettings = SETTINGS): {
+ calls: number;
+ impl: () => Promise<LoadVisionSettingsResult>;
+} {
+ let calls = 0;
+ return {
+ get calls() {
+ return calls;
+ },
+ impl: async () => {
+ calls += 1;
+ return { ok: true, settings };
+ },
+ };
+}
+
+function fakeSaveOk(): {
+ patches: object[];
+ impl: (patch: object) => Promise<SaveVisionSettingsResult>;
+} {
+ const patches: object[] = [];
+ return {
+ get patches() {
+ return patches;
+ },
+ impl: async (patch) => {
+ patches.push(patch);
+ // Merge into the current settings to simulate the server echo.
+ const next: VisionSettings = {
+ imageLimit:
+ "imageLimit" in patch ? (patch as VisionSettings).imageLimit : SETTINGS.imageLimit,
+ compactionModel:
+ "compactionModel" in patch
+ ? (patch as VisionSettings).compactionModel
+ : SETTINGS.compactionModel,
+ };
+ return { ok: true, settings: next };
+ },
+ };
+}
+
+describe("VisionSettingsView", () => {
+ it("loads settings on mount and seeds the imageLimit input", async () => {
+ const load = fakeLoad({ imageLimit: 7, compactionModel: "kimi/k2" });
+ render(VisionSettingsView, {
+ props: {
+ models: ["kimi/k2"],
+ modelInfo: { "kimi/k2": { vision: true } },
+ load: load.impl,
+ save: fakeSaveOk().impl,
+ },
+ });
+
+ await vi.waitFor(() => {
+ expect(screen.getByLabelText(/Image limit/)).toHaveValue("7");
+ });
+ // "Auto" is selected (compactionModel was kimi/k2 here actually)
+ expect(screen.getByLabelText(/Compaction model/)).toHaveValue("kimi/k2");
+ });
+
+ it("disables Save until the imageLimit input differs", async () => {
+ const load = fakeLoad();
+ const save = fakeSaveOk();
+ const user = userEvent.setup();
+ render(VisionSettingsView, {
+ props: { models: [], modelInfo: {}, load: load.impl, save: save.impl },
+ });
+
+ await vi.waitFor(() => {
+ expect(screen.getByRole("button", { name: "Save" })).toBeDisabled();
+ });
+
+ const input = screen.getByLabelText(/Image limit/);
+ await user.clear(input);
+ await user.type(input, "5");
+ expect(screen.getByRole("button", { name: "Save" })).toBeEnabled();
+ });
+
+ it("saves the imageLimit on click and confirms", async () => {
+ const load = fakeLoad();
+ const save = fakeSaveOk();
+ const user = userEvent.setup();
+ render(VisionSettingsView, {
+ props: { models: [], modelInfo: {}, load: load.impl, save: save.impl },
+ });
+
+ await vi.waitFor(() => {
+ expect(screen.getByLabelText(/Image limit/)).toHaveValue("10");
+ });
+
+ const input = screen.getByLabelText(/Image limit/);
+ await user.clear(input);
+ await user.type(input, "3");
+ await user.click(screen.getByRole("button", { name: "Save" }));
+
+ await vi.waitFor(() => {
+ expect(save.patches).toEqual([{ imageLimit: 3 }]);
+ });
+ expect(screen.getByText(/Saved/i)).toBeInTheDocument();
+ });
+
+ it("shows an error for a non-numeric imageLimit on save", async () => {
+ const load = fakeLoad();
+ const save = fakeSaveOk();
+ const user = userEvent.setup();
+ render(VisionSettingsView, {
+ props: { models: [], modelInfo: {}, load: load.impl, save: save.impl },
+ });
+
+ await vi.waitFor(() => {
+ expect(screen.getByLabelText(/Image limit/)).toHaveValue("10");
+ });
+
+ const input = screen.getByLabelText(/Image limit/);
+ await user.clear(input);
+ await user.type(input, "abc");
+ // Save is disabled for invalid input, so no save fires; the error surfaces
+ // only on a submit attempt — but the button is disabled, so just assert that.
+ expect(screen.getByRole("button", { name: "Save" })).toBeDisabled();
+ expect(save.patches).toEqual([]);
+ });
+
+ it("renders the compaction-model dropdown with Auto + vision-capable models", async () => {
+ const load = fakeLoad();
+ render(VisionSettingsView, {
+ props: {
+ models: ["kimi/k2", "umans/glm-5.2", "kimi/k1.5"],
+ modelInfo: {
+ "kimi/k2": { vision: true },
+ "kimi/k1.5": { vision: true },
+ "umans/glm-5.2": { vision: false },
+ },
+ load: load.impl,
+ save: fakeSaveOk().impl,
+ },
+ });
+
+ await vi.waitFor(() => {
+ expect(screen.getByLabelText(/Compaction model/)).toBeInTheDocument();
+ });
+ const select = screen.getByLabelText(/Compaction model/) as HTMLSelectElement;
+ const optionTexts = Array.from(select.options).map((o) => o.textContent ?? "");
+ expect(optionTexts).toEqual(["Auto (server-selected)", "kimi/k2", "kimi/k1.5"]);
+ // Non-vision glm-5.2 is excluded.
+ expect(optionTexts.some((t) => t.includes("glm-5.2"))).toBe(false);
+ });
+
+ it("saves the compactionModel on change (Auto → a vision model)", async () => {
+ const load = fakeLoad({ imageLimit: 10, compactionModel: null });
+ const save = fakeSaveOk();
+ const user = userEvent.setup();
+ render(VisionSettingsView, {
+ props: {
+ models: ["kimi/k2"],
+ modelInfo: { "kimi/k2": { vision: true } },
+ load: load.impl,
+ save: save.impl,
+ },
+ });
+
+ await vi.waitFor(() => {
+ expect(screen.getByLabelText(/Compaction model/)).toBeInTheDocument();
+ });
+
+ await user.selectOptions(screen.getByLabelText(/Compaction model/), "kimi/k2");
+
+ await vi.waitFor(() => {
+ expect(save.patches).toEqual([{ compactionModel: "kimi/k2" }]);
+ });
+ expect(screen.getByText(/Saved/i)).toBeInTheDocument();
+ });
+
+ it("saves null (Auto) when the auto option is chosen", async () => {
+ const load = fakeLoad({ imageLimit: 10, compactionModel: "kimi/k2" });
+ const save = fakeSaveOk();
+ const user = userEvent.setup();
+ render(VisionSettingsView, {
+ props: {
+ models: ["kimi/k2"],
+ modelInfo: { "kimi/k2": { vision: true } },
+ load: load.impl,
+ save: save.impl,
+ },
+ });
+
+ await vi.waitFor(() => {
+ expect(screen.getByLabelText(/Compaction model/)).toHaveValue("kimi/k2");
+ });
+
+ await user.selectOptions(screen.getByLabelText(/Compaction model/), "__auto__");
+
+ await vi.waitFor(() => {
+ expect(save.patches).toEqual([{ compactionModel: null }]);
+ });
+ });
+
+ it("surfaces a load error", async () => {
+ const load = vi.fn(async () => ({ ok: false, error: "vision unavailable" }) as const);
+ render(VisionSettingsView, {
+ props: { models: [], modelInfo: {}, load, save: fakeSaveOk().impl },
+ });
+
+ await vi.waitFor(() => {
+ expect(screen.getByText("vision unavailable")).toBeInTheDocument();
+ });
+ });
+
+ it("surfaces a save error", async () => {
+ const load = fakeLoad();
+ const save = vi.fn(async () => ({ ok: false, error: "boom" }) as const);
+ const user = userEvent.setup();
+ render(VisionSettingsView, {
+ props: { models: [], modelInfo: {}, load: load.impl, save },
+ });
+
+ await vi.waitFor(() => {
+ expect(screen.getByLabelText(/Image limit/)).toHaveValue("10");
+ });
+
+ const input = screen.getByLabelText(/Image limit/);
+ await user.clear(input);
+ await user.type(input, "3");
+ await user.click(screen.getByRole("button", { name: "Save" }));
+
+ await vi.waitFor(() => {
+ expect(screen.getByText("boom")).toBeInTheDocument();
+ });
+ });
+});
diff --git a/src/features/workspaces/adapter/http.test.ts b/src/features/workspaces/adapter/http.test.ts
new file mode 100644
index 0000000..18d8939
--- /dev/null
+++ b/src/features/workspaces/adapter/http.test.ts
@@ -0,0 +1,189 @@
+import { describe, expect, it, vi } from "vitest";
+import { createWorkspaceHttp } from "./http";
+
+/** Build a fake `fetch` returning a canned Response. */
+function fakeFetch(responses: Array<{ status?: number; body?: unknown } | Error>): typeof fetch {
+ let i = 0;
+ return vi.fn(async () => {
+ const next = responses[i++];
+ if (next === undefined) throw new Error("fakeFetch: no more canned responses");
+ if (next instanceof Error) throw next;
+ const status = next.status ?? 200;
+ const body = next.body;
+ return {
+ ok: status >= 200 && status < 300,
+ status,
+ async json() {
+ return body;
+ },
+ } as Response;
+ }) as unknown as typeof fetch;
+}
+
+const BASE = "http://x";
+
+describe("createWorkspaceHttp", () => {
+ it("list returns the workspaces", async () => {
+ const fetchImpl = fakeFetch([
+ {
+ body: {
+ workspaces: [
+ {
+ id: "a",
+ title: "A",
+ defaultCwd: null,
+ createdAt: 1,
+ lastActivityAt: 2,
+ conversationCount: 3,
+ },
+ ],
+ },
+ },
+ ]);
+ const http = createWorkspaceHttp(BASE, fetchImpl);
+ const list = await http.list();
+ expect(list).toHaveLength(1);
+ expect(list[0]?.id).toBe("a");
+ expect(list[0]?.conversationCount).toBe(3);
+ expect(fetchImpl).toHaveBeenCalledWith(`${BASE}/workspaces`);
+ });
+
+ it("list returns [] on a failed response (non-fatal)", async () => {
+ const http = createWorkspaceHttp(BASE, fakeFetch([{ status: 500 }]));
+ expect(await http.list()).toEqual([]);
+ });
+
+ it("list returns [] on a network error", async () => {
+ const http = createWorkspaceHttp(BASE, fakeFetch([new Error("network")]));
+ expect(await http.list()).toEqual([]);
+ });
+
+ it("ensure PUTs the id + returns the workspace", async () => {
+ const ws = { id: "my-ws", title: "my-ws", defaultCwd: null, createdAt: 10, lastActivityAt: 10 };
+ const fetchImpl = fakeFetch([{ body: ws }]);
+ const http = createWorkspaceHttp(BASE, fetchImpl);
+ const result = await http.ensure("my-ws");
+ expect(result).toEqual({ ok: true, value: ws });
+ expect(fetchImpl).toHaveBeenCalledWith(
+ `${BASE}/workspaces/my-ws`,
+ expect.objectContaining({ method: "PUT" }),
+ );
+ });
+
+ it("ensure surfaces the backend error on a 400 (invalid slug)", async () => {
+ const http = createWorkspaceHttp(
+ BASE,
+ fakeFetch([{ status: 400, body: { error: "invalid slug" } }]),
+ );
+ const result = await http.ensure("UPPER");
+ expect(result).toEqual({ ok: false, error: "invalid slug" });
+ });
+
+ it("get returns null on 404", async () => {
+ const http = createWorkspaceHttp(BASE, fakeFetch([{ status: 404 }]));
+ expect(await http.get("nope")).toBeNull();
+ });
+
+ it("get returns the workspace on 200", async () => {
+ const ws = { id: "x", title: "X", defaultCwd: "/home", createdAt: 1, lastActivityAt: 2 };
+ const http = createWorkspaceHttp(BASE, fakeFetch([{ body: ws }]));
+ expect(await http.get("x")).toEqual(ws);
+ });
+
+ it("setTitle PUTs the title", async () => {
+ const ws = { id: "a", title: "Renamed", defaultCwd: null, createdAt: 1, lastActivityAt: 2 };
+ const fetchImpl = fakeFetch([{ body: ws }]);
+ const http = createWorkspaceHttp(BASE, fetchImpl);
+ const result = await http.setTitle("a", "Renamed");
+ expect(result).toEqual({ ok: true, value: ws });
+ const call = (fetchImpl as unknown as ReturnType<typeof vi.fn>).mock.calls[0];
+ expect(call?.[0]).toBe(`${BASE}/workspaces/a/title`);
+ expect(JSON.parse(call?.[1]?.body)).toEqual({ title: "Renamed" });
+ });
+
+ it("setDefaultCwd PUTs null to clear", async () => {
+ const ws = { id: "a", title: "A", defaultCwd: null, createdAt: 1, lastActivityAt: 2 };
+ const fetchImpl = fakeFetch([{ body: ws }]);
+ const http = createWorkspaceHttp(BASE, fetchImpl);
+ await http.setDefaultCwd("a", null);
+ const call = (fetchImpl as unknown as ReturnType<typeof vi.fn>).mock.calls[0];
+ expect(call?.[0]).toBe(`${BASE}/workspaces/a/default-cwd`);
+ expect(JSON.parse(call?.[1]?.body)).toEqual({ defaultCwd: null });
+ });
+
+ it("delete returns closedCount", async () => {
+ const fetchImpl = fakeFetch([{ body: { workspaceId: "a", closedCount: 4 } }]);
+ const http = createWorkspaceHttp(BASE, fetchImpl);
+ const result = await http.delete("a");
+ expect(result).toEqual({ ok: true, value: { closedCount: 4 } });
+ expect(fetchImpl).toHaveBeenCalledWith(
+ `${BASE}/workspaces/a`,
+ expect.objectContaining({ method: "DELETE" }),
+ );
+ });
+
+ it("delete surfaces 409 for 'default'", async () => {
+ const http = createWorkspaceHttp(
+ BASE,
+ fakeFetch([{ status: 409, body: { error: "cannot delete default" } }]),
+ );
+ const result = await http.delete("default");
+ expect(result).toEqual({ ok: false, error: "cannot delete default" });
+ });
+
+ it("star PUTs /star with no body and returns the updated workspace", async () => {
+ const ws = {
+ id: "a",
+ title: "A",
+ defaultCwd: null,
+ defaultComputerId: null,
+ starred: true,
+ createdAt: 1,
+ lastActivityAt: 2,
+ };
+ const fetchImpl = fakeFetch([{ body: ws }]);
+ const http = createWorkspaceHttp(BASE, fetchImpl);
+ const result = await http.star("a");
+ expect(result).toEqual({ ok: true, value: ws });
+ const call = (fetchImpl as unknown as ReturnType<typeof vi.fn>).mock.calls[0];
+ expect(call?.[0]).toBe(`${BASE}/workspaces/a/star`);
+ expect(call?.[1]).toEqual({ method: "PUT" });
+ });
+
+ it("unstar DELETEs /star with no body and returns the updated workspace", async () => {
+ const ws = {
+ id: "a",
+ title: "A",
+ defaultCwd: null,
+ defaultComputerId: null,
+ starred: false,
+ createdAt: 1,
+ lastActivityAt: 2,
+ };
+ const fetchImpl = fakeFetch([{ body: ws }]);
+ const http = createWorkspaceHttp(BASE, fetchImpl);
+ const result = await http.unstar("a");
+ expect(result).toEqual({ ok: true, value: ws });
+ const call = (fetchImpl as unknown as ReturnType<typeof vi.fn>).mock.calls[0];
+ expect(call?.[0]).toBe(`${BASE}/workspaces/a/star`);
+ expect(call?.[1]).toEqual({ method: "DELETE" });
+ });
+
+ it("star surfaces a 400 for an invalid slug", async () => {
+ const http = createWorkspaceHttp(
+ BASE,
+ fakeFetch([{ status: 400, body: { error: "invalid slug" } }]),
+ );
+ const result = await http.star("UPPER");
+ expect(result).toEqual({ ok: false, error: "invalid slug" });
+ });
+
+ it("unstar surfaces the backend error on failure", async () => {
+ const http = createWorkspaceHttp(
+ BASE,
+ fakeFetch([{ status: 500, body: { error: "Failed to unstar workspace" } }]),
+ );
+ const result = await http.unstar("a");
+ expect(result).toEqual({ ok: false, error: "Failed to unstar workspace" });
+ });
+});
diff --git a/src/features/workspaces/adapter/http.ts b/src/features/workspaces/adapter/http.ts
new file mode 100644
index 0000000..5673881
--- /dev/null
+++ b/src/features/workspaces/adapter/http.ts
@@ -0,0 +1,187 @@
+import type {
+ DeleteWorkspaceResponse,
+ EnsureWorkspaceRequest,
+ SetWorkspaceDefaultComputerRequest,
+ SetWorkspaceDefaultCwdRequest,
+ SetWorkspaceTitleRequest,
+ Workspace,
+ WorkspaceEntry,
+ WorkspaceListResponse,
+ WorkspaceResponse,
+} from "@dispatch/transport-contract";
+
+/**
+ * Workspace HTTP effects — the injected edge that talks to the backend's
+ * workspace endpoints. Mirrors the store's fetch pattern: `httpBase` + an
+ * injected `fetchImpl` (so it is testable without the network). Returns typed
+ * `WorkspaceResult<T>` (`{ok,value}` | `{ok:false,error}`) for mutating ops so a
+ * caller can surface the backend's `{ error }` reason; reads return data or a
+ * safe empty/null on failure (non-fatal — the UI falls back gracefully).
+ *
+ * Endpoints ([email protected]):
+ * - `GET /workspaces` → list
+ * - `PUT /workspaces/:id` (create-on-miss, idempotent) → ensure
+ * - `GET /workspaces/:id` (404 → null) → get
+ * - `PUT /workspaces/:id/title` → rename
+ * - `PUT /workspaces/:id/default-cwd` → set/clear default cwd
+ * - `PUT /workspaces/:id/default-computer` → set/clear default computer (SSH handoff #2)
+ * - `PUT /workspaces/:id/star` (create-on-miss) → star (concurrency priority)
+ * - `DELETE /workspaces/:id/star` (create-on-miss) → unstar
+ * - `DELETE /workspaces/:id` (409 for "default") → delete
+ */
+export type WorkspaceResult<T> =
+ | { readonly ok: true; readonly value: T }
+ | { readonly ok: false; readonly error: string };
+
+export interface WorkspaceHttp {
+ list(): Promise<readonly WorkspaceEntry[]>;
+ ensure(id: string, body?: EnsureWorkspaceRequest): Promise<WorkspaceResult<Workspace>>;
+ get(id: string): Promise<Workspace | null>;
+ setTitle(id: string, title: string): Promise<WorkspaceResult<Workspace>>;
+ setDefaultCwd(id: string, defaultCwd: string | null): Promise<WorkspaceResult<Workspace>>;
+ setDefaultComputer(id: string, computerId: string | null): Promise<WorkspaceResult<Workspace>>;
+ /** Star a workspace (concurrency priority). Create-on-miss; no body. */
+ star(id: string): Promise<WorkspaceResult<Workspace>>;
+ /** Unstar a workspace. Create-on-miss; no body. */
+ unstar(id: string): Promise<WorkspaceResult<Workspace>>;
+ delete(id: string): Promise<WorkspaceResult<{ closedCount: number }>>;
+}
+
+async function errText(res: Response): Promise<string> {
+ try {
+ const body = (await res.json()) as { error?: string };
+ return body.error ?? `HTTP ${res.status}`;
+ } catch {
+ return `HTTP ${res.status}`;
+ }
+}
+
+export function createWorkspaceHttp(httpBase: string, fetchImpl: typeof fetch): WorkspaceHttp {
+ return {
+ async list(): Promise<readonly WorkspaceEntry[]> {
+ try {
+ const res = await fetchImpl(`${httpBase}/workspaces`);
+ if (!res.ok) return [];
+ const data = (await res.json()) as WorkspaceListResponse;
+ return data.workspaces;
+ } catch {
+ return [];
+ }
+ },
+
+ async ensure(id, body): Promise<WorkspaceResult<Workspace>> {
+ try {
+ const res = await fetchImpl(`${httpBase}/workspaces/${encodeURIComponent(id)}`, {
+ method: "PUT",
+ headers: { "Content-Type": "application/json" },
+ body: JSON.stringify(body ?? {}),
+ });
+ if (!res.ok) return { ok: false, error: await errText(res) };
+ return { ok: true, value: (await res.json()) as WorkspaceResponse };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "Workspace request failed",
+ };
+ }
+ },
+
+ async get(id): Promise<Workspace | null> {
+ try {
+ const res = await fetchImpl(`${httpBase}/workspaces/${encodeURIComponent(id)}`);
+ if (res.status === 404 || !res.ok) return null;
+ return (await res.json()) as WorkspaceResponse;
+ } catch {
+ return null;
+ }
+ },
+
+ async setTitle(id, title): Promise<WorkspaceResult<Workspace>> {
+ try {
+ const res = await fetchImpl(`${httpBase}/workspaces/${encodeURIComponent(id)}/title`, {
+ method: "PUT",
+ headers: { "Content-Type": "application/json" },
+ body: JSON.stringify({ title } satisfies SetWorkspaceTitleRequest),
+ });
+ if (!res.ok) return { ok: false, error: await errText(res) };
+ return { ok: true, value: (await res.json()) as WorkspaceResponse };
+ } catch (err) {
+ return { ok: false, error: err instanceof Error ? err.message : "Rename failed" };
+ }
+ },
+
+ async setDefaultCwd(id, defaultCwd): Promise<WorkspaceResult<Workspace>> {
+ try {
+ const res = await fetchImpl(
+ `${httpBase}/workspaces/${encodeURIComponent(id)}/default-cwd`,
+ {
+ method: "PUT",
+ headers: { "Content-Type": "application/json" },
+ body: JSON.stringify({ defaultCwd } satisfies SetWorkspaceDefaultCwdRequest),
+ },
+ );
+ if (!res.ok) return { ok: false, error: await errText(res) };
+ return { ok: true, value: (await res.json()) as WorkspaceResponse };
+ } catch (err) {
+ return { ok: false, error: err instanceof Error ? err.message : "Set default cwd failed" };
+ }
+ },
+
+ async setDefaultComputer(id, computerId): Promise<WorkspaceResult<Workspace>> {
+ try {
+ const res = await fetchImpl(
+ `${httpBase}/workspaces/${encodeURIComponent(id)}/default-computer`,
+ {
+ method: "PUT",
+ headers: { "Content-Type": "application/json" },
+ body: JSON.stringify({ computerId } satisfies SetWorkspaceDefaultComputerRequest),
+ },
+ );
+ if (!res.ok) return { ok: false, error: await errText(res) };
+ return { ok: true, value: (await res.json()) as WorkspaceResponse };
+ } catch (err) {
+ return {
+ ok: false,
+ error: err instanceof Error ? err.message : "Set default computer failed",
+ };
+ }
+ },
+
+ async star(id): Promise<WorkspaceResult<Workspace>> {
+ try {
+ const res = await fetchImpl(`${httpBase}/workspaces/${encodeURIComponent(id)}/star`, {
+ method: "PUT",
+ });
+ if (!res.ok) return { ok: false, error: await errText(res) };
+ return { ok: true, value: (await res.json()) as WorkspaceResponse };
+ } catch (err) {
+ return { ok: false, error: err instanceof Error ? err.message : "Star failed" };
+ }
+ },
+
+ async unstar(id): Promise<WorkspaceResult<Workspace>> {
+ try {
+ const res = await fetchImpl(`${httpBase}/workspaces/${encodeURIComponent(id)}/star`, {
+ method: "DELETE",
+ });
+ if (!res.ok) return { ok: false, error: await errText(res) };
+ return { ok: true, value: (await res.json()) as WorkspaceResponse };
+ } catch (err) {
+ return { ok: false, error: err instanceof Error ? err.message : "Unstar failed" };
+ }
+ },
+
+ async delete(id): Promise<WorkspaceResult<{ closedCount: number }>> {
+ try {
+ const res = await fetchImpl(`${httpBase}/workspaces/${encodeURIComponent(id)}`, {
+ method: "DELETE",
+ });
+ if (!res.ok) return { ok: false, error: await errText(res) };
+ const data = (await res.json()) as DeleteWorkspaceResponse;
+ return { ok: true, value: { closedCount: data.closedCount } };
+ } catch (err) {
+ return { ok: false, error: err instanceof Error ? err.message : "Delete failed" };
+ }
+ },
+ };
+}
diff --git a/src/features/workspaces/index.ts b/src/features/workspaces/index.ts
new file mode 100644
index 0000000..dab1dec
--- /dev/null
+++ b/src/features/workspaces/index.ts
@@ -0,0 +1,21 @@
+export type { WorkspaceHttp, WorkspaceResult } from "./adapter/http";
+export { createWorkspaceHttp } from "./adapter/http";
+export type { Route } from "./logic/route";
+export {
+ DEFAULT_WORKSPACE_ID,
+ isValidSlug,
+ parsePath,
+ WORKSPACE_SLUG_RE,
+ workspacePath,
+} from "./logic/route";
+export { applyStarred, pageTitle, relativeTime, sortWorkspaces } from "./logic/view-model";
+export type { WorkspaceStore } from "./store.svelte";
+export { createWorkspaceStore } from "./store.svelte";
+export { default as WorkspaceCard } from "./ui/WorkspaceCard.svelte";
+export { default as WorkspacesHome } from "./ui/WorkspacesHome.svelte";
+
+/** Public module manifest — aggregated by the shell's "Loaded Modules" view. */
+export const manifest = {
+ name: "workspaces",
+ description: "URL-driven conversation grouping with a backend-owned default cwd",
+} as const;
diff --git a/src/features/workspaces/logic/route.test.ts b/src/features/workspaces/logic/route.test.ts
new file mode 100644
index 0000000..96e0ff3
--- /dev/null
+++ b/src/features/workspaces/logic/route.test.ts
@@ -0,0 +1,77 @@
+import { describe, expect, it } from "vitest";
+import {
+ DEFAULT_WORKSPACE_ID,
+ isValidSlug,
+ parsePath,
+ WORKSPACE_SLUG_RE,
+ workspacePath,
+} from "./route";
+
+describe("parsePath", () => {
+ it("treats the root path as home", () => {
+ expect(parsePath("/")).toEqual({ kind: "home" });
+ expect(parsePath("")).toEqual({ kind: "home" });
+ });
+
+ it("trims surrounding slashes", () => {
+ expect(parsePath("//")).toEqual({ kind: "home" });
+ expect(parsePath("/my-ws/")).toEqual({ kind: "workspace", id: "my-ws" });
+ });
+
+ it("parses a single segment as a workspace id", () => {
+ expect(parsePath("/default")).toEqual({ kind: "workspace", id: "default" });
+ expect(parsePath("/my-workspace")).toEqual({ kind: "workspace", id: "my-workspace" });
+ expect(parsePath("/ws1")).toEqual({ kind: "workspace", id: "ws1" });
+ });
+
+ it("takes only the first segment of a deeper path", () => {
+ expect(parsePath("/foo/bar")).toEqual({ kind: "workspace", id: "foo" });
+ expect(parsePath("/foo/bar/baz")).toEqual({ kind: "workspace", id: "foo" });
+ });
+
+ it("URL-decodes the segment", () => {
+ expect(parsePath("/my%20ws")).toEqual({ kind: "workspace", id: "my ws" });
+ });
+
+ it("does not validate the slug — an invalid id is still a workspace route", () => {
+ expect(parsePath("/UPPER")).toEqual({ kind: "workspace", id: "UPPER" });
+ expect(parsePath("/has space")).toEqual({ kind: "workspace", id: "has space" });
+ });
+});
+
+describe("isValidSlug", () => {
+ it("accepts lowercase alphanumeric + internal hyphens", () => {
+ expect(isValidSlug("default")).toBe(true);
+ expect(isValidSlug("my-workspace")).toBe(true);
+ expect(isValidSlug("a")).toBe(true);
+ expect(isValidSlug("ws-1")).toBe(true);
+ });
+
+ it("accepts up to 40 chars", () => {
+ expect(isValidSlug("a".repeat(40))).toBe(true);
+ });
+
+ it("rejects empty and too-long", () => {
+ expect(isValidSlug("")).toBe(false);
+ expect(isValidSlug("a".repeat(41))).toBe(false);
+ });
+
+ it("rejects uppercase, spaces, and leading/trailing hyphens", () => {
+ expect(isValidSlug("MyWS")).toBe(false);
+ expect(isValidSlug("has space")).toBe(false);
+ expect(isValidSlug("-leading")).toBe(false);
+ expect(isValidSlug("trailing-")).toBe(false);
+ expect(isValidSlug("double--hyphen")).toBe(true); // internal doubles are allowed by the regex
+ });
+
+ it("WORKSPACE_SLUG_RE matches the default id", () => {
+ expect(WORKSPACE_SLUG_RE.test(DEFAULT_WORKSPACE_ID)).toBe(true);
+ });
+});
+
+describe("workspacePath", () => {
+ it("builds the URL path for a workspace id", () => {
+ expect(workspacePath("default")).toBe("/default");
+ expect(workspacePath("my-ws")).toBe("/my-ws");
+ });
+});
diff --git a/src/features/workspaces/logic/route.ts b/src/features/workspaces/logic/route.ts
new file mode 100644
index 0000000..015c6d6
--- /dev/null
+++ b/src/features/workspaces/logic/route.ts
@@ -0,0 +1,63 @@
+/**
+ * Pure routing logic for the workspaces feature — zero DOM, zero effects, zero Svelte.
+ *
+ * The app is URL-driven: the root path `/` is the workspaces HOME (lists all
+ * workspaces); a single path segment `/<id>` opens the workspace with that id
+ * (the slug). This module holds the pure mapping from a pathname to a `Route`,
+ * plus the slug-validation rules mirrored from the backend's `PUT /workspaces/:id`.
+ */
+
+/**
+ * The workspace slug regex (mirrors the backend's `PUT /workspaces/:id`
+ * validation): 1–40 chars, lowercase alphanumeric with internal hyphens only
+ * (no leading/trailing hyphen). `"default"` matches and is a valid (but
+ * non-deletable) id.
+ */
+export const WORKSPACE_SLUG_RE = /^[a-z0-9](?:[a-z0-9-]{0,38}[a-z0-9])?$/;
+
+/** A route derived from the URL path. */
+export type Route = { readonly kind: "home" } | { readonly kind: "workspace"; readonly id: string };
+
+/** The reserved id of the always-present fallback workspace. */
+export const DEFAULT_WORKSPACE_ID = "default";
+
+/**
+ * Parse a pathname into a `Route`. `/` (or empty) → home; a leading segment →
+ * the workspace with that id (URL-decoded, surrounding slashes trimmed). Deeper
+ * paths take their FIRST segment (nested routes are not used in v1). Pure:
+ * pathname in, route out. Does NOT validate the slug — an invalid id still
+ * produces a `workspace` route; the backend's ensure call rejects it (the FE
+ * surfaces the error).
+ */
+export function parsePath(pathname: string): Route {
+ const trimmed = pathname.replace(/^\/+|\/+$/g, "");
+ if (trimmed === "") return { kind: "home" };
+ const first = trimmed.split("/")[0] ?? "";
+ const id = safeDecode(first);
+ if (id === "") return { kind: "home" };
+ return { kind: "workspace", id };
+}
+
+/**
+ * Whether a slug is valid for a NEW workspace (the form the backend accepts).
+ * Used by the home view's "new workspace" input before navigating.
+ */
+export function isValidSlug(slug: string): boolean {
+ return WORKSPACE_SLUG_RE.test(slug);
+}
+
+/**
+ * Build the URL path for a workspace id. Used when navigating to / linking a
+ * workspace. Pure: id in, path string out.
+ */
+export function workspacePath(id: string): string {
+ return `/${id}`;
+}
+
+function safeDecode(segment: string): string {
+ try {
+ return decodeURIComponent(segment);
+ } catch {
+ return segment;
+ }
+}
diff --git a/src/features/workspaces/logic/view-model.test.ts b/src/features/workspaces/logic/view-model.test.ts
new file mode 100644
index 0000000..44d2f31
--- /dev/null
+++ b/src/features/workspaces/logic/view-model.test.ts
@@ -0,0 +1,179 @@
+import type { WorkspaceEntry } from "@dispatch/wire";
+import { describe, expect, it } from "vitest";
+import { applyStarred, pageTitle, relativeTime, sortWorkspaces } from "./view-model";
+
+describe("relativeTime", () => {
+ const now = 1_000_000_000_000; // 2001-09-09
+
+ it("is 'now' within a minute", () => {
+ expect(relativeTime(now, now)).toBe("now");
+ expect(relativeTime(now - 59_000, now)).toBe("now");
+ });
+
+ it("is minutes under an hour", () => {
+ expect(relativeTime(now - 5 * 60_000, now)).toBe("5m");
+ expect(relativeTime(now - 59 * 60_000, now)).toBe("59m");
+ });
+
+ it("is hours under a day", () => {
+ expect(relativeTime(now - 2 * 60 * 60_000, now)).toBe("2h");
+ });
+
+ it("is days under a week", () => {
+ expect(relativeTime(now - 3 * 24 * 60 * 60_000, now)).toBe("3d");
+ });
+
+ it("is a short date beyond a week", () => {
+ // 7+ days ago: just check it is a MM/DD string.
+ const s = relativeTime(now - 10 * 24 * 60 * 60_000, now);
+ expect(s).toMatch(/^\d{2}\/\d{2}$/);
+ });
+});
+
+describe("pageTitle", () => {
+ // Minimal valid WorkspaceEntry (the irrelevant metadata is zeroed).
+ const ws = (id: string, title: string): WorkspaceEntry => ({
+ id,
+ title,
+ defaultCwd: null,
+ defaultComputerId: null,
+ starred: false,
+ createdAt: 0,
+ lastActivityAt: 0,
+ conversationCount: 0,
+ });
+
+ it("is 'Dispatch' for the home route", () => {
+ expect(pageTitle({ kind: "home" }, [])).toBe("Dispatch");
+ expect(pageTitle({ kind: "home" }, [ws("default", "Default")])).toBe("Dispatch");
+ });
+
+ it("is 'Dispatch: {title}' for a workspace with a display title", () => {
+ const list = [ws("default", "Default"), ws("my-ws", "My Workspace")];
+ expect(pageTitle({ kind: "workspace", id: "my-ws" }, list)).toBe("Dispatch: My Workspace");
+ });
+
+ it("falls back to the slug (id) until the list has loaded the workspace", () => {
+ expect(pageTitle({ kind: "workspace", id: "pending" }, [])).toBe("Dispatch: pending");
+ });
+
+ it("uses the id as the title when it was never customized (defaults to id)", () => {
+ const list = [ws("default", "default")];
+ expect(pageTitle({ kind: "workspace", id: "default" }, list)).toBe("Dispatch: default");
+ });
+
+ it("matches by id, not title", () => {
+ const list = [ws("a", "shared-title"), ws("b", "shared-title")];
+ expect(pageTitle({ kind: "workspace", id: "b" }, list)).toBe("Dispatch: shared-title");
+ });
+});
+
+describe("sortWorkspaces", () => {
+ const entry = (id: string, starred: boolean, lastActivityAt: number): WorkspaceEntry => ({
+ id,
+ title: id,
+ defaultCwd: null,
+ defaultComputerId: null,
+ starred,
+ createdAt: 0,
+ lastActivityAt,
+ conversationCount: 0,
+ });
+
+ it("puts starred workspaces before unstarred", () => {
+ const list = [entry("plain", false, 9_000), entry("star", true, 1_000)];
+ expect(sortWorkspaces(list).map((w) => w.id)).toEqual(["star", "plain"]);
+ });
+
+ it("within the starred group, sorts by lastActivityAt desc", () => {
+ const list = [
+ entry("old-star", true, 1_000),
+ entry("new-star", true, 5_000),
+ entry("plain", false, 9_000),
+ ];
+ expect(sortWorkspaces(list).map((w) => w.id)).toEqual(["new-star", "old-star", "plain"]);
+ });
+
+ it("within the unstarred group, sorts by lastActivityAt desc", () => {
+ const list = [
+ entry("star", true, 1_000),
+ entry("old-plain", false, 1_000),
+ entry("new-plain", false, 5_000),
+ ];
+ expect(sortWorkspaces(list).map((w) => w.id)).toEqual(["star", "new-plain", "old-plain"]);
+ });
+
+ it("returns a new array (does not mutate the input)", () => {
+ const list = [entry("plain", false, 9_000), entry("star", true, 1_000)];
+ const sorted = sortWorkspaces(list);
+ expect(sorted).not.toBe(list);
+ // Input order is preserved (not mutated).
+ expect(list.map((w) => w.id)).toEqual(["plain", "star"]);
+ expect(sorted.map((w) => w.id)).toEqual(["star", "plain"]);
+ });
+
+ it("handles an empty list", () => {
+ expect(sortWorkspaces([])).toEqual([]);
+ });
+
+ it("is stable for equal lastActivityAt within a group", () => {
+ const list = [
+ entry("first", false, 5_000),
+ entry("second", false, 5_000),
+ entry("third", false, 5_000),
+ ];
+ expect(sortWorkspaces(list).map((w) => w.id)).toEqual(["first", "second", "third"]);
+ });
+});
+
+describe("applyStarred", () => {
+ const entry = (id: string, starred: boolean): WorkspaceEntry => ({
+ id,
+ title: id,
+ defaultCwd: null,
+ defaultComputerId: null,
+ starred,
+ createdAt: 0,
+ lastActivityAt: 0,
+ conversationCount: 0,
+ });
+
+ it("sets the named workspace's starred flag", () => {
+ const list = [entry("a", false), entry("b", false)];
+ const next = applyStarred(list, "b", true);
+ expect(next.map((w) => [w.id, w.starred])).toEqual([
+ ["a", false],
+ ["b", true],
+ ]);
+ });
+
+ it("returns a new array (does not mutate the input)", () => {
+ const list = [entry("a", false)];
+ const next = applyStarred(list, "a", true);
+ expect(next).not.toBe(list);
+ expect(list[0]?.starred).toBe(false);
+ expect(next[0]?.starred).toBe(true);
+ });
+
+ it("leaves other entries referentially unchanged (only the target is replaced)", () => {
+ const a = entry("a", false);
+ const b = entry("b", false);
+ const next = applyStarred([a, b], "b", true);
+ expect(next[0]).toBe(a);
+ expect(next[1]).not.toBe(b);
+ });
+
+ it("leaves the list unchanged when the id is absent (not yet loaded)", () => {
+ const list = [entry("a", false)];
+ const next = applyStarred(list, "missing", true);
+ expect(next.map((w) => [w.id, w.starred])).toEqual([["a", false]]);
+ });
+
+ it("can revert by re-applying the previous value", () => {
+ const list = [entry("a", false)];
+ const optimistic = applyStarred(list, "a", true);
+ expect(optimistic[0]?.starred).toBe(true);
+ const reverted = applyStarred(optimistic, "a", false);
+ expect(reverted[0]?.starred).toBe(false);
+ });
+});
diff --git a/src/features/workspaces/logic/view-model.ts b/src/features/workspaces/logic/view-model.ts
new file mode 100644
index 0000000..b994b7c
--- /dev/null
+++ b/src/features/workspaces/logic/view-model.ts
@@ -0,0 +1,71 @@
+/**
+ * Pure view-model helpers for the workspaces feature — zero DOM, zero effects.
+ */
+
+import type { WorkspaceEntry } from "@dispatch/wire";
+import type { Route } from "./route";
+
+/**
+ * The browser tab / page (`document.title`) text for a route. The home route
+ * (`/`) is "Dispatch"; a workspace route (`/<id>`) is "Dispatch: {title}",
+ * using the workspace's display title and falling back to the URL slug (`id`)
+ * until the workspace list has loaded it — the backend defaults a workspace's
+ * title to its id, so the slug is the correct transient value. Pure: route +
+ * workspaces in, string out.
+ */
+export function pageTitle(route: Route, workspaces: readonly WorkspaceEntry[]): string {
+ if (route.kind === "home") return "Dispatch";
+ const ws = workspaces.find((w) => w.id === route.id);
+ return `Dispatch: ${ws?.title ?? route.id}`;
+}
+
+/**
+ * Sort workspaces for display: starred first, then most-recently-active. Pure:
+ * the list in, a NEW sorted array out (the input is not mutated). Starred
+ * workspaces jump to the top (the FE-side echo of their concurrency-priority);
+ * within each group (starred / not) `lastActivityAt` desc breaks ties, matching
+ * the backend's list ordering. Stable for equal `lastActivityAt`.
+ */
+export function sortWorkspaces<T extends WorkspaceEntry>(workspaces: readonly T[]): T[] {
+ return [...workspaces].sort((a, b) => {
+ if (a.starred !== b.starred) return a.starred ? -1 : 1;
+ return b.lastActivityAt - a.lastActivityAt;
+ });
+}
+
+/**
+ * Return a NEW list with the one workspace's `starred` flag set (immutably —
+ * the entry is replaced, the rest keep their identity). Pure: the optimistic
+ * star/unstar transformation shared by the apply + the error revert. A missing
+ * `id` (not yet in the list — e.g. starring a workspace the home view hasn't
+ * loaded) leaves the list unchanged; the backend's create-on-miss still applies
+ * server-side and a subsequent refresh reconciles.
+ */
+export function applyStarred<T extends WorkspaceEntry>(
+ workspaces: readonly T[],
+ id: string,
+ starred: boolean,
+): T[] {
+ return workspaces.map((w) => (w.id === id ? { ...w, starred } : w));
+}
+
+/**
+ * Format an epoch-ms timestamp as a short relative string ("now", "3m", "2h",
+ * "5d", or a date). Pure: `now` + `then` in, string out. Future timestamps
+ * (a workspace just created) read as "now".
+ */
+export function relativeTime(then: number, now: number): string {
+ const diff = now - then;
+ if (diff < 60_000) return "now";
+ const mins = Math.floor(diff / 60_000);
+ if (mins < 60) return `${mins}m`;
+ const hours = Math.floor(mins / 60);
+ if (hours < 24) return `${hours}h`;
+ const days = Math.floor(hours / 24);
+ if (days < 7) return `${days}d`;
+ // Beyond a week: a short date (MM/DD). Uses UTC parts for determinism in tests.
+ const d = new Date(then);
+ const month = String(d.getUTCMonth() + 1).padStart(2, "0");
+ const day = String(d.getUTCDate()).padStart(2, "0");
+ return `${month}/${day}`;
+}
diff --git a/src/features/workspaces/store.svelte.ts b/src/features/workspaces/store.svelte.ts
new file mode 100644
index 0000000..22d73b5
--- /dev/null
+++ b/src/features/workspaces/store.svelte.ts
@@ -0,0 +1,114 @@
+import type { EnsureWorkspaceRequest } from "@dispatch/transport-contract";
+import type { Workspace, WorkspaceEntry } from "@dispatch/wire";
+import type { WorkspaceHttp, WorkspaceResult } from "./adapter/http";
+import { applyStarred, sortWorkspaces } from "./logic/view-model";
+
+/**
+ * Workspace store — a thin reactive wrapper over the pure HTTP edge. Owns the
+ * list + loading/error state; mutations call the injected `WorkspaceHttp` and
+ * refresh the list. State is per-instance (no ambient store); subscriptions are
+ * owned by the composition root.
+ */
+export interface WorkspaceStore {
+ /**
+ * All workspaces, sorted for display: starred first (their FE-side echo of
+ * concurrency-priority), then most-recently-active. The backing list is the
+ * backend's `lastActivityAt`-desc order; this getter re-sorts reactively.
+ */
+ readonly list: readonly WorkspaceEntry[];
+ readonly loading: boolean;
+ readonly error: string | null;
+ /** Refresh the list from the backend. */
+ refresh(): Promise<void>;
+ /** `PUT /workspaces/:id` (create-on-miss). Returns the workspace or an error. */
+ ensure(id: string, body?: EnsureWorkspaceRequest): Promise<WorkspaceResult<Workspace>>;
+ /** Rename a workspace (display only; id unchanged). */
+ rename(id: string, title: string): Promise<WorkspaceResult<Workspace>>;
+ /** Set/clear a workspace's default cwd. */
+ setDefaultCwd(id: string, defaultCwd: string | null): Promise<WorkspaceResult<Workspace>>;
+ /** Set/clear a workspace's default computer (SSH `Host` alias; null = local). */
+ setDefaultComputer(id: string, computerId: string | null): Promise<WorkspaceResult<Workspace>>;
+ /**
+ * Toggle a workspace's star (concurrency priority). Optimistic: the local
+ * `starred` flag flips immediately and the sorted list re-orders; on error it
+ * reverts to the prior value. No full refresh on success (avoids flicker).
+ */
+ setStarred(id: string, starred: boolean): Promise<WorkspaceResult<Workspace>>;
+ /** Delete a workspace (closes its conversations, reassigns to "default"). */
+ remove(id: string): Promise<WorkspaceResult<{ closedCount: number }>>;
+}
+
+export function createWorkspaceStore(http: WorkspaceHttp): WorkspaceStore {
+ let list = $state<readonly WorkspaceEntry[]>([]);
+ // Sorted view (starred first, then most-recent) — derived so it recomputes
+ // only when the backing list changes, not on every read.
+ let sorted = $derived(sortWorkspaces(list));
+ let loading = $state(false);
+ let error = $state<string | null>(null);
+
+ return {
+ get list(): readonly WorkspaceEntry[] {
+ return sorted;
+ },
+ get loading(): boolean {
+ return loading;
+ },
+ get error(): string | null {
+ return error;
+ },
+
+ async refresh(): Promise<void> {
+ loading = true;
+ error = null;
+ try {
+ list = await http.list();
+ } catch (err) {
+ error = err instanceof Error ? err.message : "Failed to load workspaces";
+ } finally {
+ loading = false;
+ }
+ },
+
+ async ensure(id, body): Promise<WorkspaceResult<Workspace>> {
+ const result = await http.ensure(id, body);
+ if (result.ok) void this.refresh();
+ return result;
+ },
+
+ async rename(id, title): Promise<WorkspaceResult<Workspace>> {
+ const result = await http.setTitle(id, title);
+ if (result.ok) void this.refresh();
+ return result;
+ },
+
+ async setDefaultCwd(id, defaultCwd): Promise<WorkspaceResult<Workspace>> {
+ const result = await http.setDefaultCwd(id, defaultCwd);
+ if (result.ok) void this.refresh();
+ return result;
+ },
+
+ async setDefaultComputer(id, computerId): Promise<WorkspaceResult<Workspace>> {
+ const result = await http.setDefaultComputer(id, computerId);
+ if (result.ok) void this.refresh();
+ return result;
+ },
+
+ async setStarred(id, starred): Promise<WorkspaceResult<Workspace>> {
+ const prev = list.find((w) => w.id === id)?.starred ?? false;
+ // Optimistic: flip immediately (the sorted getter re-orders reactively).
+ list = applyStarred(list, id, starred);
+ const result = starred ? await http.star(id) : await http.unstar(id);
+ if (!result.ok) {
+ // Revert the optimistic flip on failure.
+ list = applyStarred(list, id, prev);
+ }
+ return result;
+ },
+
+ async remove(id): Promise<WorkspaceResult<{ closedCount: number }>> {
+ const result = await http.delete(id);
+ if (result.ok) void this.refresh();
+ return result;
+ },
+ };
+}
diff --git a/src/features/workspaces/store.test.ts b/src/features/workspaces/store.test.ts
new file mode 100644
index 0000000..4caac9f
--- /dev/null
+++ b/src/features/workspaces/store.test.ts
@@ -0,0 +1,145 @@
+import type { Workspace, WorkspaceEntry } from "@dispatch/wire";
+import { describe, expect, it, vi } from "vitest";
+import type { WorkspaceResult } from "./adapter/http";
+import { createWorkspaceStore } from "./store.svelte";
+
+function entry(overrides: Partial<WorkspaceEntry> = {}): WorkspaceEntry {
+ return {
+ id: "a",
+ title: "A",
+ defaultCwd: null,
+ defaultComputerId: null,
+ starred: false,
+ createdAt: 1,
+ lastActivityAt: 2,
+ conversationCount: 0,
+ ...overrides,
+ };
+}
+
+/** A fake `WorkspaceHttp` with stubbed star/unstar + a controllable list. */
+function fakeHttp(opts: {
+ list?: readonly WorkspaceEntry[];
+ star?: (id: string) => Promise<WorkspaceResult<Workspace>>;
+ unstar?: (id: string) => Promise<WorkspaceResult<Workspace>>;
+}) {
+ return {
+ list: vi.fn(async (): Promise<readonly WorkspaceEntry[]> => opts.list ?? []),
+ ensure: vi.fn(),
+ get: vi.fn(),
+ setTitle: vi.fn(),
+ setDefaultCwd: vi.fn(),
+ setDefaultComputer: vi.fn(),
+ star:
+ opts.star ??
+ vi.fn(
+ async (id: string): Promise<WorkspaceResult<Workspace>> => ({
+ ok: true,
+ value: entry({ id, starred: true }),
+ }),
+ ),
+ unstar:
+ opts.unstar ??
+ vi.fn(
+ async (id: string): Promise<WorkspaceResult<Workspace>> => ({
+ ok: true,
+ value: entry({ id, starred: false }),
+ }),
+ ),
+ delete: vi.fn(),
+ };
+}
+
+describe("createWorkspaceStore — setStarred", () => {
+ it("optimistically flips starred to true before the request resolves", async () => {
+ const http = fakeHttp({ list: [entry({ id: "a", starred: false })] });
+ const store = createWorkspaceStore(http);
+ await store.refresh();
+
+ let observedDuringCall = false;
+ http.star = vi.fn(async (_id: string): Promise<WorkspaceResult<Workspace>> => {
+ // While the request is in flight, the store already shows the new state.
+ observedDuringCall = store.list[0]?.starred === true;
+ return { ok: true, value: entry({ id: "a", starred: true }) };
+ });
+
+ await store.setStarred("a", true);
+
+ expect(observedDuringCall).toBe(true);
+ expect(http.star).toHaveBeenCalledWith("a");
+ expect(store.list[0]?.starred).toBe(true);
+ });
+
+ it("calls unstar (DELETE) when starring false", async () => {
+ const http = fakeHttp({ list: [entry({ id: "a", starred: true })] });
+ const store = createWorkspaceStore(http);
+ await store.refresh();
+
+ await store.setStarred("a", false);
+
+ expect(http.unstar).toHaveBeenCalledWith("a");
+ expect(http.star).not.toHaveBeenCalled();
+ expect(store.list[0]?.starred).toBe(false);
+ });
+
+ it("reverts the optimistic flip on error", async () => {
+ const http = fakeHttp({ list: [entry({ id: "a", starred: false })] });
+ const store = createWorkspaceStore(http);
+ await store.refresh();
+
+ http.star = vi.fn(
+ async (): Promise<WorkspaceResult<Workspace>> => ({ ok: false, error: "boom" }),
+ );
+
+ const result = await store.setStarred("a", true);
+
+ expect(result).toEqual({ ok: false, error: "boom" });
+ // Reverted to the prior value.
+ expect(store.list[0]?.starred).toBe(false);
+ });
+
+ it("does not set the store-wide load error on a star failure", async () => {
+ const http = fakeHttp({ list: [entry({ id: "a", starred: false })] });
+ const store = createWorkspaceStore(http);
+ await store.refresh();
+
+ http.star = vi.fn(
+ async (): Promise<WorkspaceResult<Workspace>> => ({ ok: false, error: "boom" }),
+ );
+ await store.setStarred("a", true);
+
+ expect(store.error).toBeNull();
+ });
+
+ it("re-sorts so starred workspaces bubble to the top", async () => {
+ const http = fakeHttp({
+ list: [
+ entry({ id: "plain", starred: false, lastActivityAt: 9_000 }),
+ entry({ id: "star", starred: false, lastActivityAt: 1_000 }),
+ ],
+ });
+ const store = createWorkspaceStore(http);
+ await store.refresh();
+
+ // Before: backend order (most-active first).
+ expect(store.list.map((w) => w.id)).toEqual(["plain", "star"]);
+
+ await store.setStarred("star", true);
+
+ // After: starred jumps above the more-recent unstarred workspace.
+ expect(store.list.map((w) => w.id)).toEqual(["star", "plain"]);
+ });
+
+ it("treats a missing id as not-starred and still calls through (create-on-miss)", async () => {
+ const http = fakeHttp({ list: [] });
+ const store = createWorkspaceStore(http);
+ await store.refresh();
+
+ const result = await store.setStarred("ghost", true);
+
+ expect(result.ok).toBe(true);
+ expect(http.star).toHaveBeenCalledWith("ghost");
+ // The list is unchanged (the workspace wasn't loaded); a refresh reconciles.
+ expect(store.list).toHaveLength(0);
+ });
+});
diff --git a/src/features/workspaces/ui/WorkspaceCard.svelte b/src/features/workspaces/ui/WorkspaceCard.svelte
new file mode 100644
index 0000000..6de4109
--- /dev/null
+++ b/src/features/workspaces/ui/WorkspaceCard.svelte
@@ -0,0 +1,279 @@
+<script lang="ts">
+ import type { ComputerEntry, WorkspaceEntry } from "@dispatch/wire";
+ import { untrack } from "svelte";
+ import type { WorkspaceStore } from "../store.svelte";
+ import { relativeTime } from "../logic/view-model";
+ import { workspacePath } from "../logic/route";
+ import ComputerSelect from "../../computer/ui/ComputerSelect.svelte";
+
+ let {
+ ws,
+ store,
+ onNavigate,
+ computers,
+ hasActive,
+ }: {
+ ws: WorkspaceEntry;
+ store: WorkspaceStore;
+ onNavigate: (path: string) => void;
+ /** Discovered computers (`GET /computers`), for the default-computer dropdown. */
+ computers: readonly ComputerEntry[];
+ /**
+ * Optional port: returns whether the workspace has at least one active
+ * (generating / queued) conversation — drives a loading-dots indicator on
+ * the card. Wired by the composition root to the app store's
+ * `workspaceHasActiveConversations`. Absent → no indicator (e.g. tests).
+ */
+ hasActive?: (workspaceId: string) => boolean;
+ } = $props();
+
+ // Whether at least one conversation in this workspace is currently active
+ // (generating). Reactive: the composition-root port reads the app store's
+ // reactive tab set + lifecycle statuses, so this re-derives on change.
+ const active = $derived(hasActive?.(ws.id) ?? false);
+
+ // ── Title: double-click to rename inline ──────────────────────────────────
+ let editingTitle = $state(false);
+ let titleDraft = $state("");
+ let titleInput = $state<HTMLInputElement | undefined>();
+ let titleError = $state<string | null>(null);
+
+ function startEditTitle(): void {
+ titleDraft = ws.title;
+ titleError = null;
+ editingTitle = true;
+ queueMicrotask(() => titleInput?.focus());
+ }
+
+ async function saveTitle(): Promise<void> {
+ if (!editingTitle) return;
+ const title = titleDraft.trim();
+ editingTitle = false;
+ if (title === "" || title === ws.title) return;
+ const result = await store.rename(ws.id, title);
+ if (!result.ok) titleError = result.error;
+ }
+
+ function cancelTitle(): void {
+ editingTitle = false;
+ titleError = null;
+ }
+
+ // ── Default cwd: inline input ─────────────────────────────────────────────
+ let cwdDraft = $state(untrack(() => ws.defaultCwd ?? ""));
+ // Reseed when the backend value changes (e.g., after a save or an external
+ // refresh). Mid-edit (same value) does NOT re-run, so typing is never clobbered.
+ $effect(() => {
+ cwdDraft = ws.defaultCwd ?? "";
+ });
+
+ const cwdDirty = $derived(cwdDraft.trim() !== (ws.defaultCwd ?? ""));
+ let savingCwd = $state(false);
+ let cwdError = $state<string | null>(null);
+
+ async function saveCwd(): Promise<void> {
+ if (!cwdDirty || savingCwd) return;
+ savingCwd = true;
+ cwdError = null;
+ const cwd = cwdDraft.trim();
+ const result = await store.setDefaultCwd(ws.id, cwd === "" ? null : cwd);
+ savingCwd = false;
+ if (!result.ok) cwdError = result.error;
+ }
+
+ // ── Default computer: dropdown (Local / discovered SSH aliases) ────────────
+ let savingComputer = $state(false);
+ let computerError = $state<string | null>(null);
+
+ async function saveComputer(computerId: string | null): Promise<void> {
+ if (savingComputer) return;
+ // No-op when unchanged (the select only fires on a real change, but guard).
+ if (computerId === (ws.defaultComputerId ?? null)) return;
+ savingComputer = true;
+ computerError = null;
+ const result = await store.setDefaultComputer(ws.id, computerId);
+ savingComputer = false;
+ if (!result.ok) computerError = result.error;
+ }
+
+ // ── Star (concurrency priority) ──────────────────────────────────────────────
+ let savingStar = $state(false);
+ let starError = $state<string | null>(null);
+
+ async function toggleStar(): Promise<void> {
+ if (savingStar) return;
+ savingStar = true;
+ starError = null;
+ try {
+ // Optimistic: the store flips `starred` immediately and re-sorts; revert
+ // on error is handled there. We read `ws.starred` for the target value.
+ const result = await store.setStarred(ws.id, !ws.starred);
+ if (!result.ok) starError = result.error;
+ } catch (err) {
+ // A throw (e.g. a rejected effect) — surface it; the store already
+ // reverted the optimistic flip if it got far enough to apply it.
+ starError = err instanceof Error ? err.message : "Star toggle failed";
+ } finally {
+ savingStar = false;
+ }
+ }
+
+ // ── Delete ─────────────────────────────────────────────────────────────────
+ let deleting = $state(false);
+
+ async function handleDelete(): Promise<void> {
+ if (
+ !window.confirm(
+ `Delete workspace "${ws.title}"? Its conversations will be closed and moved to "default".`,
+ )
+ ) {
+ return;
+ }
+ deleting = true;
+ await store.remove(ws.id);
+ deleting = false;
+ }
+</script>
+
+<li class="flex flex-col gap-2 rounded-box border border-primary bg-primary/10 p-3">
+ <div class="flex items-center gap-2">
+ {#if editingTitle}
+ <input
+ bind:this={titleInput}
+ bind:value={titleDraft}
+ class="input input-bordered input-sm flex-1"
+ aria-label="Workspace title"
+ onkeydown={(e) => {
+ if (e.key === "Enter") saveTitle();
+ else if (e.key === "Escape") cancelTitle();
+ }}
+ onblur={saveTitle}
+ />
+ {:else}
+ <!-- svelte-ignore a11y_no_static_element_interactions, a11y_click_events_have_key_events -->
+ <span
+ class="flex-1 cursor-default truncate font-semibold"
+ title="Double-click to rename"
+ ondblclick={startEditTitle}>{ws.title}</span
+ >
+ {/if}
+ {#if active}
+ <span
+ class="loading loading-dots loading-xs shrink-0 text-primary"
+ aria-label="Workspace has active conversations"
+ title="A conversation in this workspace is generating"></span
+ >
+ {/if}
+ <span class="font-mono text-xs opacity-50">/{ws.id}</span>
+ <button
+ type="button"
+ class="btn btn-ghost btn-xs px-1"
+ disabled={savingStar}
+ aria-pressed={ws.starred}
+ aria-label={ws.starred ? "Unstar workspace" : "Star workspace"}
+ title={ws.starred
+ ? "Starred — its agents get concurrency priority. Click to unstar."
+ : "Star this workspace to give its agents concurrency priority."}
+ onclick={toggleStar}
+ >
+ {#if savingStar}
+ <span class="loading loading-spinner loading-xs"></span>
+ {:else if ws.starred}
+ <span class="text-warning" aria-hidden="true">★</span>
+ {:else}
+ <span class="opacity-40" aria-hidden="true">☆</span>
+ {/if}
+ </button>
+ <span class="ml-auto text-xs opacity-50">
+ {ws.conversationCount}
+ {ws.conversationCount === 1 ? "conversation" : "conversations"}
+ · {relativeTime(ws.lastActivityAt, Date.now())}
+ </span>
+ <button
+ type="button"
+ class="btn btn-ghost btn-xs"
+ disabled={deleting}
+ title="Delete workspace"
+ aria-label="Delete workspace"
+ onclick={handleDelete}
+ >
+ {#if deleting}
+ <span class="loading loading-spinner loading-xs"></span>
+ {:else}
+ ✕
+ {/if}
+ </button>
+ </div>
+
+ {#if titleError}
+ <p class="text-xs text-error">{titleError}</p>
+ {/if}
+
+ {#if starError}
+ <p class="text-xs text-error">{starError}</p>
+ {/if}
+
+ <div class="flex items-center gap-2">
+ <span class="w-8 shrink-0 text-xs opacity-60">cwd</span>
+ <input
+ type="text"
+ class="input input-bordered input-sm flex-1 font-mono text-xs"
+ placeholder="inherits the server default"
+ bind:value={cwdDraft}
+ aria-label="Default working directory"
+ onkeydown={(e) => {
+ if (e.key === "Enter") saveCwd();
+ }}
+ />
+ <button
+ type="button"
+ class="btn btn-primary btn-xs"
+ disabled={!cwdDirty || savingCwd}
+ onclick={saveCwd}
+ >
+ {#if savingCwd}
+ <span class="loading loading-spinner loading-xs"></span>
+ {:else}
+ Set
+ {/if}
+ </button>
+ </div>
+
+ <div class="flex items-center gap-2">
+ <span class="w-8 shrink-0 text-xs opacity-60">ssh</span>
+ <ComputerSelect
+ value={ws.defaultComputerId}
+ {computers}
+ disabled={savingComputer}
+ onSelect={saveComputer}
+ />
+ {#if savingComputer}
+ <span class="loading loading-spinner loading-xs shrink-0"></span>
+ {/if}
+ </div>
+
+ <div class="flex justify-start">
+ <a
+ class="btn"
+ href={workspacePath(ws.id)}
+ onclick={(e) => {
+ e.preventDefault();
+ onNavigate(workspacePath(ws.id));
+ }}
+ >
+ Open
+ </a>
+ </div>
+
+ {#if cwdError}
+ <p class="text-xs text-error">{cwdError}</p>
+ {:else if !cwdDirty && !ws.defaultCwd}
+ <p class="text-xs opacity-50">No default cwd set — conversations inherit the server default.</p>
+ {/if}
+
+ {#if computerError}
+ <p class="text-xs text-error">{computerError}</p>
+ {:else if !ws.defaultComputerId}
+ <p class="text-xs opacity-50">No default computer — conversations run locally (no SSH).</p>
+ {/if}
+</li>
diff --git a/src/features/workspaces/ui/WorkspaceCard.test.ts b/src/features/workspaces/ui/WorkspaceCard.test.ts
new file mode 100644
index 0000000..72f4e60
--- /dev/null
+++ b/src/features/workspaces/ui/WorkspaceCard.test.ts
@@ -0,0 +1,305 @@
+import type { WorkspaceEntry } from "@dispatch/wire";
+import { render, screen } from "@testing-library/svelte";
+import userEvent from "@testing-library/user-event";
+import { describe, expect, it, vi } from "vitest";
+import type { WorkspaceResult } from "../adapter/http";
+import type { WorkspaceStore } from "../store.svelte";
+import WorkspaceCard from "./WorkspaceCard.svelte";
+
+function fakeEntry(overrides: Partial<WorkspaceEntry> = {}): WorkspaceEntry {
+ return {
+ id: "my-ws",
+ title: "My Workspace",
+ defaultCwd: null,
+ defaultComputerId: null,
+ starred: false,
+ createdAt: 1,
+ lastActivityAt: 2,
+ conversationCount: 3,
+ ...overrides,
+ };
+}
+
+/** A fake store that records calls + resolves ok. */
+function fakeStore() {
+ return {
+ rename: vi.fn(
+ async (id: string, _title: string): Promise<WorkspaceResult<WorkspaceEntry>> => ({
+ ok: true,
+ value: fakeEntry({ id, title: _title }),
+ }),
+ ),
+ setDefaultCwd: vi.fn(
+ async (id: string, defaultCwd: string | null): Promise<WorkspaceResult<WorkspaceEntry>> => ({
+ ok: true,
+ value: fakeEntry({ id, defaultCwd }),
+ }),
+ ),
+ setDefaultComputer: vi.fn(
+ async (id: string, computerId: string | null): Promise<WorkspaceResult<WorkspaceEntry>> => ({
+ ok: true,
+ value: fakeEntry({ id, defaultComputerId: computerId }),
+ }),
+ ),
+ setStarred: vi.fn(
+ async (id: string, starred: boolean): Promise<WorkspaceResult<WorkspaceEntry>> => ({
+ ok: true,
+ value: fakeEntry({ id, starred }),
+ }),
+ ),
+ remove: vi.fn(
+ async (): Promise<WorkspaceResult<{ closedCount: number }>> => ({
+ ok: true,
+ value: { closedCount: 0 },
+ }),
+ ),
+ };
+}
+
+describe("WorkspaceCard", () => {
+ it("renders the title, slug, and an Open link", () => {
+ const store = fakeStore() as unknown as WorkspaceStore;
+ render(WorkspaceCard, {
+ props: { ws: fakeEntry(), store, onNavigate: vi.fn(), computers: [] },
+ });
+ expect(screen.getByText("My Workspace")).toBeInTheDocument();
+ expect(screen.getByText("/my-ws")).toBeInTheDocument();
+ expect(screen.getByRole("link", { name: "Open" })).toHaveAttribute("href", "/my-ws");
+ });
+
+ it("double-clicking the title reveals an edit input", async () => {
+ const user = userEvent.setup();
+ const store = fakeStore() as unknown as WorkspaceStore;
+ render(WorkspaceCard, {
+ props: { ws: fakeEntry(), store, onNavigate: vi.fn(), computers: [] },
+ });
+
+ await user.dblClick(screen.getByText("My Workspace"));
+ expect(screen.getByLabelText("Workspace title")).toHaveValue("My Workspace");
+ });
+
+ it("renames via the store on Enter", async () => {
+ const user = userEvent.setup();
+ const store = fakeStore() as unknown as WorkspaceStore;
+ render(WorkspaceCard, {
+ props: { ws: fakeEntry(), store, onNavigate: vi.fn(), computers: [] },
+ });
+
+ await user.dblClick(screen.getByText("My Workspace"));
+ const input = screen.getByLabelText("Workspace title");
+ await user.clear(input);
+ await user.type(input, "Renamed{Enter}");
+
+ expect(store.rename).toHaveBeenCalledWith("my-ws", "Renamed");
+ });
+
+ it("enables Set only when the cwd differs, then saves it", async () => {
+ const user = userEvent.setup();
+ const store = fakeStore() as unknown as WorkspaceStore;
+ render(WorkspaceCard, {
+ props: { ws: fakeEntry({ defaultCwd: "/old" }), store, onNavigate: vi.fn(), computers: [] },
+ });
+
+ const input = screen.getByLabelText("Default working directory");
+ expect(input).toHaveValue("/old");
+ expect(screen.getByRole("button", { name: "Set" })).toBeDisabled();
+
+ await user.clear(input);
+ await user.type(input, "/new/path");
+ expect(screen.getByRole("button", { name: "Set" })).toBeEnabled();
+
+ await user.click(screen.getByRole("button", { name: "Set" }));
+ expect(store.setDefaultCwd).toHaveBeenCalledWith("my-ws", "/new/path");
+ });
+
+ it("clears the cwd to null when saved empty (inherits the server default)", async () => {
+ const user = userEvent.setup();
+ const store = fakeStore() as unknown as WorkspaceStore;
+ render(WorkspaceCard, {
+ props: { ws: fakeEntry({ defaultCwd: "/old" }), store, onNavigate: vi.fn(), computers: [] },
+ });
+
+ const input = screen.getByLabelText("Default working directory");
+ await user.clear(input);
+ await user.click(screen.getByRole("button", { name: "Set" }));
+
+ expect(store.setDefaultCwd).toHaveBeenCalledWith("my-ws", null);
+ });
+
+ it("the Open link navigates to the workspace in the same tab (SPA navigation, no new tab)", async () => {
+ const user = userEvent.setup();
+ const store = fakeStore() as unknown as WorkspaceStore;
+ const onNavigate = vi.fn();
+ render(WorkspaceCard, { props: { ws: fakeEntry(), store, onNavigate, computers: [] } });
+
+ const open = screen.getByRole("link", { name: "Open" });
+ // Still a real link (progressive enhancement): href points at the workspace.
+ expect(open).toHaveAttribute("href", "/my-ws");
+ // But it no longer opens a new browser tab.
+ expect(open).not.toHaveAttribute("target", "_blank");
+ // Clicking navigates in-place via the SPA callback.
+ await user.click(open);
+ expect(onNavigate).toHaveBeenCalledTimes(1);
+ expect(onNavigate).toHaveBeenCalledWith("/my-ws");
+ });
+
+ // ── Active indicator (loading dots) ──────────────────────────────────────
+
+ it("shows no loading-dots when no hasActive port is given", () => {
+ const store = fakeStore() as unknown as WorkspaceStore;
+ const { container } = render(WorkspaceCard, {
+ props: { ws: fakeEntry(), store, onNavigate: vi.fn(), computers: [] },
+ });
+ expect(container.querySelector(".loading-dots")).toBeNull();
+ });
+
+ it("shows no loading-dots when hasActive returns false", () => {
+ const store = fakeStore() as unknown as WorkspaceStore;
+ const { container } = render(WorkspaceCard, {
+ props: {
+ ws: fakeEntry(),
+ store,
+ onNavigate: vi.fn(),
+ computers: [],
+ hasActive: () => false,
+ },
+ });
+ expect(container.querySelector(".loading-dots")).toBeNull();
+ });
+
+ it("shows loading-dots when hasActive returns true", () => {
+ const store = fakeStore() as unknown as WorkspaceStore;
+ const { container } = render(WorkspaceCard, {
+ props: {
+ ws: fakeEntry(),
+ store,
+ onNavigate: vi.fn(),
+ computers: [],
+ hasActive: () => true,
+ },
+ });
+ const dots = container.querySelector(".loading-dots");
+ expect(dots).not.toBeNull();
+ // Accessible label ties the indicator to the workspace-active concept.
+ expect(dots?.getAttribute("aria-label")).toBe("Workspace has active conversations");
+ });
+
+ it("forwards the workspace id to hasActive", () => {
+ const store = fakeStore() as unknown as WorkspaceStore;
+ const seen: string[] = [];
+ render(WorkspaceCard, {
+ props: {
+ ws: fakeEntry({ id: "proj-x" }),
+ store,
+ onNavigate: vi.fn(),
+ computers: [],
+ hasActive: (id: string) => {
+ seen.push(id);
+ return false;
+ },
+ },
+ });
+ expect(seen).toEqual(["proj-x"]);
+ });
+
+ it("renders an outline star button for an unstarred workspace", () => {
+ const store = fakeStore() as unknown as WorkspaceStore;
+ render(WorkspaceCard, {
+ props: { ws: fakeEntry({ starred: false }), store, onNavigate: vi.fn(), computers: [] },
+ });
+ const star = screen.getByRole("button", { name: "Star workspace" });
+ expect(star).toHaveAttribute("aria-pressed", "false");
+ });
+
+ it("renders a filled star button for a starred workspace", () => {
+ const store = fakeStore() as unknown as WorkspaceStore;
+ render(WorkspaceCard, {
+ props: { ws: fakeEntry({ starred: true }), store, onNavigate: vi.fn(), computers: [] },
+ });
+ const star = screen.getByRole("button", { name: "Unstar workspace" });
+ expect(star).toHaveAttribute("aria-pressed", "true");
+ });
+
+ it("toggles the star via the store on click", async () => {
+ const user = userEvent.setup();
+ const store = fakeStore() as unknown as WorkspaceStore;
+ render(WorkspaceCard, {
+ props: { ws: fakeEntry({ starred: false }), store, onNavigate: vi.fn(), computers: [] },
+ });
+
+ await user.click(screen.getByRole("button", { name: "Star workspace" }));
+ expect(store.setStarred).toHaveBeenCalledWith("my-ws", true);
+ });
+
+ it("clicking a starred workspace's star calls setStarred(id, false)", async () => {
+ const user = userEvent.setup();
+ const store = fakeStore() as unknown as WorkspaceStore;
+ render(WorkspaceCard, {
+ props: { ws: fakeEntry({ starred: true }), store, onNavigate: vi.fn(), computers: [] },
+ });
+
+ await user.click(screen.getByRole("button", { name: "Unstar workspace" }));
+ expect(store.setStarred).toHaveBeenCalledWith("my-ws", false);
+ });
+
+ it("renders no star error on a successful toggle", async () => {
+ const user = userEvent.setup();
+ const store = fakeStore() as unknown as WorkspaceStore;
+ render(WorkspaceCard, {
+ props: { ws: fakeEntry({ starred: false }), store, onNavigate: vi.fn(), computers: [] },
+ });
+
+ await user.click(screen.getByRole("button", { name: "Star workspace" }));
+ expect(screen.queryByText(/Star toggle failed/i)).not.toBeInTheDocument();
+ });
+
+ it("shows an inline error when setStarred fails (result.ok false)", async () => {
+ const user = userEvent.setup();
+ const store = fakeStore() as unknown as WorkspaceStore;
+ // The store reverts the optimistic flip on failure, so the entry's
+ // `starred` stays false — fake the revert by returning ok:false unchanged.
+ store.setStarred = vi.fn(
+ async (): Promise<WorkspaceResult<WorkspaceEntry>> => ({ ok: false, error: "boom" }),
+ );
+ render(WorkspaceCard, {
+ props: { ws: fakeEntry({ starred: false }), store, onNavigate: vi.fn(), computers: [] },
+ });
+
+ await user.click(screen.getByRole("button", { name: "Star workspace" }));
+
+ expect(screen.getByText("boom")).toBeInTheDocument();
+ });
+
+ it("re-enables the star button after a failure (savingStar resets)", async () => {
+ const user = userEvent.setup();
+ const store = fakeStore() as unknown as WorkspaceStore;
+ store.setStarred = vi.fn(
+ async (): Promise<WorkspaceResult<WorkspaceEntry>> => ({ ok: false, error: "boom" }),
+ );
+ render(WorkspaceCard, {
+ props: { ws: fakeEntry({ starred: false }), store, onNavigate: vi.fn(), computers: [] },
+ });
+
+ const star = screen.getByRole("button", { name: "Star workspace" });
+ await user.click(star);
+ // After the failed toggle, the button is NOT disabled (savingStar reset).
+ expect(star).not.toBeDisabled();
+ });
+
+ it("re-enables the star button even when setStarred throws", async () => {
+ const user = userEvent.setup();
+ const store = fakeStore() as unknown as WorkspaceStore;
+ store.setStarred = vi.fn(async (): Promise<WorkspaceResult<WorkspaceEntry>> => {
+ throw new Error("network");
+ });
+ render(WorkspaceCard, {
+ props: { ws: fakeEntry({ starred: false }), store, onNavigate: vi.fn(), computers: [] },
+ });
+
+ const star = screen.getByRole("button", { name: "Star workspace" });
+ await user.click(star);
+ // savingStar must reset via try/finally even on a throw.
+ expect(star).not.toBeDisabled();
+ expect(screen.getByText("network")).toBeInTheDocument();
+ });
+});
diff --git a/src/features/workspaces/ui/WorkspacesHome.svelte b/src/features/workspaces/ui/WorkspacesHome.svelte
new file mode 100644
index 0000000..d97eab7
--- /dev/null
+++ b/src/features/workspaces/ui/WorkspacesHome.svelte
@@ -0,0 +1,110 @@
+<script lang="ts">
+ import { onMount } from "svelte";
+ import type { ComputerEntry } from "@dispatch/wire";
+ import type { WorkspaceStore } from "../store.svelte";
+ import { isValidSlug, workspacePath } from "../logic/route";
+ import WorkspaceCard from "./WorkspaceCard.svelte";
+
+ let {
+ store,
+ onNavigate,
+ computers,
+ hasActive,
+ }: {
+ store: WorkspaceStore;
+ onNavigate: (path: string) => void;
+ computers: readonly ComputerEntry[];
+ /**
+ * Optional port forwarded to each {@link WorkspaceCard}: whether the
+ * workspace has at least one active (generating / queued) conversation.
+ * Wired by the composition root to the app store. Absent → no indicator.
+ */
+ hasActive?: (workspaceId: string) => boolean;
+ } = $props();
+
+ onMount(() => {
+ void store.refresh();
+ });
+
+ let newSlug = $state("");
+ let slugError = $state<string | null>(null);
+
+ const slugValid = $derived(newSlug.length > 0 && isValidSlug(newSlug));
+
+ function createWorkspace(): void {
+ const slug = newSlug.trim();
+ if (!isValidSlug(slug)) {
+ slugError = "Lowercase letters, digits, and hyphens (1–40 chars).";
+ return;
+ }
+ slugError = null;
+ newSlug = "";
+ onNavigate(workspacePath(slug));
+ }
+</script>
+
+<div class="mx-auto flex h-screen w-full max-w-3xl flex-col gap-4 p-6">
+ <header class="flex items-center justify-between">
+ <h1 class="text-2xl font-bold">Workspaces</h1>
+ <a
+ href="/default"
+ class="btn btn-ghost btn-sm"
+ onclick={(e) => {
+ e.preventDefault();
+ onNavigate("/default");
+ }}
+ >
+ Default
+ </a>
+ </header>
+
+ <form
+ class="flex items-end gap-2"
+ onsubmit={(e) => {
+ e.preventDefault();
+ createWorkspace();
+ }}
+ >
+ <div class="flex-1">
+ <label for="new-ws" class="mb-1 block text-xs font-semibold uppercase opacity-60"
+ >New workspace</label
+ >
+ <input
+ id="new-ws"
+ class="input input-bordered w-full"
+ placeholder="my-workspace"
+ bind:value={newSlug}
+ autocomplete="off"
+ spellcheck="false"
+ />
+ </div>
+ <button type="submit" class="btn btn-primary btn-sm" disabled={!slugValid}>Create</button>
+ </form>
+ {#if slugError}
+ <p class="text-xs text-error">{slugError}</p>
+ {/if}
+
+ <div class="flex-1 overflow-y-auto">
+ {#if store.loading && store.list.length === 0}
+ <div class="flex h-32 items-center justify-center">
+ <span class="loading loading-spinner loading-sm opacity-60"></span>
+ </div>
+ {:else if store.list.length === 0}
+ <p class="py-8 text-center text-sm opacity-60">
+ No workspaces yet. Create one above or visit <code>/your-name</code> in the URL.
+ </p>
+ {:else}
+ <ul class="flex flex-col gap-2">
+ {#each store.list as ws (ws.id)}
+ <WorkspaceCard
+ {ws}
+ {store}
+ {onNavigate}
+ {computers}
+ {...(hasActive ? { hasActive } : {})}
+ />
+ {/each}
+ </ul>
+ {/if}
+ </div>
+</div>
diff --git a/src/main.ts b/src/main.ts
index 9ebef3a..565c0d6 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -4,7 +4,7 @@ import "./app.css";
const target = document.getElementById("app");
if (!target) {
- throw new Error("missing #app mount target");
+ throw new Error("missing #app mount target");
}
export default mount(App, { target });
diff --git a/src/themes/monokai.css b/src/themes/monokai.css
new file mode 100644
index 0000000..1597700
--- /dev/null
+++ b/src/themes/monokai.css
@@ -0,0 +1,40 @@
+/*!
+ * Author: Dachi — https://github.com/dachinat
+ * License: CC BY 4.0 — https://creativecommons.org/licenses/by/4.0/
+ * Repo: https://github.com/dachinat/daisyui-themes
+ */
+
+@plugin "daisyui/theme" {
+ name: "monokai";
+ default: false;
+ prefersdark: false;
+ color-scheme: "dark";
+ --color-base-100: #2e2e2e;
+ --color-base-200: #292825;
+ --color-base-300: #3b3a3a;
+ --color-base-content: #d6d6d6;
+ --color-primary: #6c99bb;
+ --color-primary-content: #000000;
+ --color-secondary: #9e86c8;
+ --color-secondary-content: #000000;
+ --color-accent: #b05279;
+ --color-accent-content: #000000;
+ --color-neutral: #e87d3e;
+ --color-neutral-content: #000000;
+ --color-info: #268bd2;
+ --color-info-content: oklch(29% 0.066 243.157);
+ --color-success: #b4d273;
+ --color-success-content: #000000;
+ --color-warning: #e5b567;
+ --color-warning-content: #000000;
+ --color-error: #dc322f;
+ --color-error-content: #000000;
+ --radius-selector: 0.25rem;
+ --radius-field: 0.5rem;
+ --radius-box: 0.25rem;
+ --size-selector: 0.25rem;
+ --size-field: 0.25rem;
+ --border: 1px;
+ --depth: 1;
+ --noise: 0;
+}
diff --git a/src/vite-env.d.ts b/src/vite-env.d.ts
index 4078e74..2a2b515 100644
--- a/src/vite-env.d.ts
+++ b/src/vite-env.d.ts
@@ -1,2 +1,5 @@
/// <reference types="svelte" />
/// <reference types="vite/client" />
+
+/** 5-char git short hash, baked at build time (vite.config.ts `define`). */
+declare const __APP_VERSION__: string;