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# Conflicts:
# packages/frontend/src/lib/components/ChatInput.svelte
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Summarize a conversation's older "head" into a structured anchored Markdown
summary while preserving the most recent turns verbatim, shrinking context size
while keeping the information needed to continue coherently. Triggered by a
"Compact conversation" button in Chat Settings (not an agent tool).
Approach informed by OpenCode's session/compaction.ts:
- Ported SUMMARY_TEMPLATE (Goal / Constraints / Progress / Key Decisions /
Next Steps / Critical Context / Relevant Files) and the anchored-summary
buildPrompt (re-summarizes a prior summary when present).
- Ported the TOOL_OUTPUT_MAX_CHARS (2000) cap on tool results in the summary
request.
- Simplified tail selection to a fixed recent-turn count (DEFAULT_TAIL_TURNS=2)
instead of OpenCode's token-budget splitTurn.
core:
- New src/compaction/ module (pure, DB-free): template, prompt builder,
head/tail selection, transcript renderer with tool-output capping, prior
summary extraction. Generic over ChatMessage so callers keep turnId/seq.
- db/chunks.ts: rekeyChunks(from,to) relocates a tab's full history to a
backup tab (reversible — nothing is deleted).
- AgentEvent: compaction-started / -complete / -error variants.
api:
- AgentManager.compactTab(tempTabId, sourceTabId): side-effect-free
resolveConnection() for the compactor model (configured compaction_model_*,
else the source tab's own key+model), one-shot tool-less summary generation
via a transient Agent, then relocate full history to a fresh backup tab and
re-seed the canonical source id with [summary turn + preserved tail]. Source
tab is locked (messages queue) during the run; queue drains afterward.
- Routes: POST /tabs/:id/compact, GET/PUT /tabs/settings/compaction-model.
frontend:
- "Compact conversation" button in ModelSelector (Chat Settings), between
Working Directory and the agent toggle; idle-gated.
- Compaction-model key+model selector in Settings, beside the title model.
- Transient placeholder tab shows a large, non-faded "Please wait, compacting
conversation…" screen; closing it cancels. Source input locked while running.
- Handle compaction-* events: reload compacted source, insert backup tab,
refocus source, discard placeholder.
tests: core compaction unit tests, rekeyChunks DB test, AgentManager.compactTab
orchestration tests, and compaction route tests. All green (713 tests), biome
clean, all typechecks pass, frontend builds.
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Add multimodal image/PDF input to the chat box via clipboard paste, gated by a
graceful per-model capability check.
UX: a pasted image/PDF inserts an inline token (【image:…】 / 【pdf:…】) into the
draft, so attachments have ORDER relative to typed text and can be referenced
positionally. The token is the only handle — deleting it (atomic Backspace/
Delete, or selection overlap) detaches the file; an input-reconciliation safety
net detaches any attachment whose token is no longer intact. No preview strip.
Capability check: resolveModelCapabilities reads models.dev modalities.input
(new GET /models/capabilities, mirrors /context-limit). The input blocks Send
(no tokens spent) only on a definitive 'no'; unknown capability (catalog offline
/ unmapped provider) stays permissive. Attachments require a fresh turn — Send is
blocked while generating and /chat rejects content mid-turn (409).
Attachments are EPHEMERAL: forwarded to the model for the turn via ordered AI SDK
ImagePart/FilePart content, but never persisted (history keeps the text with
[image]/[pdf] markers). Text-only turns serialize byte-identically to before.
Limits (Anthropic-aligned, enforced at paste + re-validated server-side):
PNG/JPEG/WebP/GIF/PDF; image ≤5MB, PDF ≤32MB, ≤20 attachments, ≤32MB total.
core: UserContentPart types, models/attachments validator, capability resolver,
agent.run+toModelMessages thread ordered content. api: /chat content validation +
passthrough. frontend: attachment-tokens helper, ChatInput paste/token/gating,
per-tab staged attachments, App.svelte capability fetch. +44 tests.
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# Conflicts:
# packages/frontend/src/lib/components/ChatInput.svelte
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- TabBar: HTML5 drag-and-drop to reorder user tabs (subagent tabs untouched);
double-click a tab title to rename (Enter/blur confirm, Escape cancel).
- Store: add reorderTabs/renameTab/setDraft; per-tab in-memory `draft` and
`manualTitle` fields. Manual rename suppresses first-message auto-title.
- ChatInput: bind to the active tab's draft so switching tabs saves/restores
unsent text instead of clobbering it.
- Backend: updateTabPositions() + PATCH /tabs/reorder persist tab order to the
existing `position` column; tabs without a stored position fall to the end
then get explicit positions on first reorder.
- Tests: store reorder/rename/auto-title-guard/draft coverage; core
updateTabPositions coverage (FakeDatabase extended with transaction support).
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Restructure ChatInput into two stacked bars:
- Top bar: auto-resizing textarea + fixed-width send/stop button that
morphs in place (no layout shift) across idle/generating states.
- Bottom bar: agent status icon, context-window fill bar, and compact
token count + percent (inert bar when model max is unknown).
Wire contextLimit prop from App.svelte into ChatInput, reusing the
shared computeContextUsage helper so it agrees with the sidebar.
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Replace the single-line input with a textarea that starts at one line,
grows vertically as text wraps (up to 7 lines), then scrolls. Override
daisyUI's .textarea min-height:5rem so the resting state is one line.
Enter sends, Shift+Enter inserts a newline.
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daisyUI's .loading class sets pointer-events:none on the spinner.
On iOS Safari, when a child inside a <button> has pointer-events:none,
the synthesized click event from touch sequences can fail to dispatch
to the parent button entirely - a well-known WebKit quirk. Since the
spinner covers ~20x20px of the button, mobile taps that land on it
are silently dropped.
Setting pointer-events:auto on the spinner lets touch events pass
through to the parent <button> correctly.
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- Add POST /chat/stop endpoint on API
- Thread abortSignal from agent-manager through Agent.run() to streamText
- Thread abortSignal option through the Agent.run() signature
- Emit status:idle on stopTab() so frontend WS gets the update
- Add stopGeneration() store method on frontend tabStore
- Add stop button in ChatInput (btn-sm lg:btn-xs for mobile tap target)
- Add tests for /chat/stop endpoint
- Refactor processMessage to pass abortSignal to agent.run
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management script
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- Add message queue allowing users to send messages while agent is running
- Queue messages are injected into tool results as [USER INTERRUPT]
- Retrieve tool interrupted via Promise.race when user message arrives
- Queued messages show with 'queued' badge and cancel button
- Consumed messages repositioned and chat splits at interrupt point
- New assistant message block created after interrupt for clean flow
- Add POST /chat/cancel endpoint for cancelling queued messages
- Fix CORS to allow any origin (Tailscale/LAN access)
- Fix crypto.randomUUID fallback for non-secure contexts (HTTP)
- Fix frontend API URL derivation from page hostname
- Auto-create DB tab if missing on processMessage (foreign key fix)
- Add error logging to processMessage catch block
- Fix working directory input sync on agent switch
- Fix agent mode button to re-apply agent settings
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handling
- Agent Builder: full CRUD with card grid, drag-and-drop model reorder, edit/delete
- Auto-save on edit with 600ms debounce, AbortController for concurrency, fieldset disabled until name entered
- Agent definitions stored as TOML with cwd field, loaded from global/project dirs
- Working directory: per-tab CWD override in Chat Settings, agent default CWD, auto-create on first message
- CWD validation: check-dir endpoint with ~ expansion, real-time validity indicator
- Subagent CWD validated against parent's effective CWD using path.relative
- Unavailable tool calls: caught gracefully, shown as tool call with error badge, model retries
- UI: tab bar border radius, sidebar border removed, chat input ghost style, scroll-to-bottom rectangle
- Skills dir collapse uses CSS rotation, Model Choice renamed to Chat Settings, System Prompt view removed
- Reusable SkillsBrowser/ToolPermissions with external mode for Agent Builder
- ModelSelector: Agent/Manual toggle, agent list, Agent Settings link
- Page router, skills recursive scanning, bin/up gopass removed, docker volume mounts
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- Tool permissions (read, edit, bash) stored in DB and control Agent tool registration
- Agent invalidated when permissions change; cache warning in Permissions panel
- Default: read=allow, edit=ask, bash=ask (matches UI checkboxes)
- Settings: auto-save title model on selection (removed save button)
- Settings: auto-expand thinking checkbox with shared reactive store
- Permissions panel: renamed from Permission Log, shows tool toggles + collapsible log
- Sidebar: renamed Current Model to Model Choice
- Chat input: allow typing while agent runs (just disable send)
- Chat cursor: fix doubled rectangle (removed unicode char)
- Generic GET/PUT /tabs/settings/:key endpoints for key-value settings
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- Add tabs, messages, and settings tables to SQLite database
- Backend: refactor AgentManager to manage per-tab Agent instances via Map<tabId, TabAgent>
- Backend: WebSocket events tagged with tabId for multiplexing
- Backend: tab CRUD routes (create, list, update, archive, messages)
- Backend: persist user and assistant messages to DB during chat
- Frontend: new tabStore replaces single chatStore with multi-tab reactive state
- Frontend: TabBar component using DaisyUI tabs-lift style with status dots
- Frontend: Settings sidebar panel for title generation model selection
- Frontend: wire ChatPanel, ChatInput, Header to use tabStore
- Fix HMR listener accumulation via wsClient.clearCallbacks()
- Delete old single-chat chatStore (chat.svelte.ts)
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- Bun monorepo with @dispatch/core, @dispatch/api, @dispatch/frontend
- Agent runtime with Vercel AI SDK, streaming via WebSocket
- Tools: read_file, write_file, list_files (scoped to working directory)
- Hono API server with POST /chat, GET /status, GET /health, WS /ws
- Svelte 5 + DaisyUI frontend with chat UI, theme switcher, copy button
- OpenCode Go (Zen) as LLM provider, deepseek-v4-flash-free model
- Docker setup (dev + prod) with bin/ scripts and gopass secrets
- Biome v2 linting/formatting, Vitest tests (44 passing)
- Debug info attached to error messages for diagnostics
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