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-rw-r--r--src/features/cache-warming/index.ts8
-rw-r--r--src/features/cache-warming/logic/view-model.test.ts220
-rw-r--r--src/features/cache-warming/logic/view-model.ts242
-rw-r--r--src/features/cache-warming/ui/CacheWarmingView.svelte234
4 files changed, 704 insertions, 0 deletions
diff --git a/src/features/cache-warming/index.ts b/src/features/cache-warming/index.ts
new file mode 100644
index 0000000..c432de6
--- /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..3d6f6d0
--- /dev/null
+++ b/src/features/cache-warming/logic/view-model.test.ts
@@ -0,0 +1,220 @@
+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);
+ expect(secondsUntilNext(5_000, 999_999)).toBe(0); // already past
+ });
+});
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..f7740d7
--- /dev/null
+++ b/src/features/cache-warming/logic/view-model.ts
@@ -0,0 +1,242 @@
+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 };
+}
+
+/**
+ * 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).
+ */
+export function secondsUntilNext(nextWarmAt: number | null, now: number): number | null {
+ if (nextWarmAt === null) 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..ced5e99
--- /dev/null
+++ b/src/features/cache-warming/ui/CacheWarmingView.svelte
@@ -0,0 +1,234 @@
+<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>