33f300bf54
- SUMMARY: virtualized ChatMessageList, fully wired ChatPanel and ChatInput - STATE: plan 05 complete, phase 22 all 5 plans done, stopped_at updated - ROADMAP: phase 22 marked Complete (6/6 summaries) - REQUIREMENTS: PERF-03 marked complete (CHAT-01/08/10/11/12, INPUT-05/06, PERF-02 already complete)
160 lines
8.5 KiB
Markdown
160 lines
8.5 KiB
Markdown
---
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phase: 22-agent-streaming
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plan: "05"
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subsystem: chat-integration
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tags: [virtualization, streaming, chat, slash-commands, mentions, edit-retry]
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dependency_graph:
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requires: [22-01, 22-02, 22-03, 22-04]
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provides: [virtualized-message-list, fully-wired-chat-panel, chat-input-with-popovers, chat-api-edit-truncate]
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affects:
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- ui/src/components/ChatMessageList.tsx
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- ui/src/components/ChatPanel.tsx
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- ui/src/components/ChatInput.tsx
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- ui/src/api/chat.ts
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- ui/src/components/ChatMessageList.test.tsx
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- packages/shared/src/index.ts
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tech_stack:
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added: []
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patterns:
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- "useVirtualizer from @tanstack/react-virtual with estimateSize: 80, overscan: 5"
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- "Dynamic height measurement via measureElement ref callback"
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- "Synthetic streaming entry appended to virtualizer list with id: __streaming__"
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- "virtualizer.measure() called on streamingContent change for growing message re-measurement"
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- "Slash command popover triggered by / at start of input"
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- "@mention popover triggered by /@word pattern match at end of input"
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- "resolveAgentFromContent routes slash > @mention > active agent"
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- "handleRetry looks up actual prior user message (not hardcoded text)"
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key_files:
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created: []
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modified:
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- ui/src/components/ChatMessageList.tsx
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- ui/src/components/ChatPanel.tsx
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- ui/src/components/ChatInput.tsx
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- ui/src/api/chat.ts
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- ui/src/components/ChatMessageList.test.tsx
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- packages/shared/src/index.ts
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decisions:
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- "virtualizer.measure() called on streamingContent change to handle dynamically growing streaming message height (Pitfall 3 from RESEARCH.md)"
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- "Slash command popover takes priority over mention popover — only one active at a time"
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- "handleRetry truncates from the user message (not the assistant message) — this removes both the assistant message and any messages after it"
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- "postMessageAndStream and savePartialMessage added to chatApi — these were specified in 22-01 plan but missing from the implemented chat.ts"
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metrics:
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duration: "~20 minutes"
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completed: "2026-04-01"
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tasks: 3
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files: 6
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requirements:
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- PERF-03
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- CHAT-01
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- CHAT-08
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- CHAT-10
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- CHAT-11
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- CHAT-12
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- INPUT-05
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- INPUT-06
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- PERF-02
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---
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# Phase 22 Plan 05: Final Integration — Virtualized List, ChatPanel, ChatInput Summary
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One-liner: Virtualized ChatMessageList with @tanstack/react-virtual, fully-wired ChatPanel integrating all Phase 22 components, and ChatInput with slash command and @mention popovers.
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## Tasks Completed
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| Task | Name | Commit | Key Files |
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|------|------|--------|-----------|
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| 1 | Virtualized ChatMessageList and chat API edit/truncate methods | 6eca2eff | ui/src/components/ChatMessageList.tsx, ui/src/api/chat.ts, ui/src/components/ChatMessageList.test.tsx |
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| 2 | Wire ChatPanel and ChatInput with all Phase 22 features | 3e4e1e72 | ui/src/components/ChatPanel.tsx, ui/src/components/ChatInput.tsx |
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| 3 | Automated verification (human verification deferred) | — | tsc: clean, vitest: 165 pass / 25 todo |
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## What Was Built
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### Task 1: Virtualized ChatMessageList + chatApi methods
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**`ui/src/components/ChatMessageList.tsx`** — Full rewrite:
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- `useVirtualizer` with `estimateSize: 80`, `overscan: 5`, dynamic `measureElement` ref
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- Synthetic streaming entry: `id: "__streaming__"`, `isStreamingEntry: true` appended when `isStreaming && streamingContent`
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- `virtualizer.measure()` called on `streamingContent` change for dynamic height re-measurement
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- Jump-to-bottom button appears when scrolled >200px from bottom
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- 3 loading Skeleton placeholders (varying widths)
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- Agent identity resolved from `agentMap` prop or streaming agent fallback props
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- Props: `streamingContent`, `isStreaming`, `streamingAgentName/Icon/Role`, `onEdit`, `onRetry`, `agentMap`
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**`ui/src/api/chat.ts`** — New methods:
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- `postMessageAndStream` — POST fetch with ReadableStream, parses SSE token/done/error events (was missing; now added)
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- `savePartialMessage` — delegates to `postMessage` for partial content persistence (was missing; now added)
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- `editMessage` — PATCH `/conversations/:id/messages/:msgId`
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- `truncateMessagesAfter` — DELETE `/conversations/:id/messages/after/:msgId`
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- `deleteMessage` — DELETE `/conversations/:id/messages/:msgId`
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### Task 2: ChatPanel and ChatInput integration
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**`ui/src/components/ChatPanel.tsx`** — Full rewrite integrating all Phase 22 components:
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- `useStreamingChat` provides `streamingContent`, `isStreaming`, `startStream`, `stop`
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- `ChatAgentSelector` in header with `onAgentChange` → updates `activeAgentId` local state
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- `ChatStopButton` shown conditionally when `isStreaming`
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- `agentMap` built from agents query for message identity bars
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- `handleEdit`: `editMessage` + `truncateMessagesAfter` + `startStream` with edited content
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- `handleRetry`: finds actual last user message content, truncates from that user message onward (removes assistant + all after), re-streams
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- `resolveAgentFromContent` for agent routing from slash commands and @mentions
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- `ChatInput` receives `agents`, `agentsLoading`, `disabled`, custom `placeholder`
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**`ui/src/components/ChatInput.tsx`** — Updated with popover support:
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- New props: `placeholder`, `agents`, `agentsLoading`
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- Slash command state: `slashOpen`, `slashQuery` — triggered when input starts with `/`
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- @mention state: `mentionOpen`, `mentionQuery` — triggered by `/@word` pattern at end
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- `handleSlashSelect`: replaces input value with selected command + space
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- `handleMentionSelect`: replaces `@query` with `@agentName ` in input value
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- Slash popover takes priority (only one active at a time)
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- Escape key closes open popover before clearing input
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### Task 3: Automated Verification Results
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**TypeScript:** `tsc --noEmit` — clean (no errors)
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**Vitest:** 41 test files, 165 tests passed, 25 todos (intentional scaffolding)
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**Human verification deferred** per execution directive (autonomous mode, no manual stops).
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The following 12 verification steps require browser interaction and are deferred to the next verification session:
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1. CHAT-01 — streaming tokens appear word-by-word
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2. PERF-02 — sub-100ms first token from echo stub
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3. CHAT-12 — stop saves partial content with [stopped] suffix
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4. CHAT-10 — edit message triggers regeneration
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5. CHAT-11 — retry uses actual prior user message
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6. CHAT-08 — agent selector routes to selected agent
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7. INPUT-05 — slash command popover opens on /, routes to PM agent
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8. INPUT-06 — @mention popover opens on @, routes to named agent
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9. PERF-03 — virtualized list has limited DOM nodes for large conversations
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10. AGENT-04 — agent name and colored icon above assistant messages
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11. THEME-03 — agent colors distinguishable across all 3 themes
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12. All 11 agent roles have distinct colors
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## Deviations from Plan
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### Auto-fixed Issues
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**1. [Rule 1 - Bug] Fixed duplicate ChatConversation type exports in packages/shared/src/index.ts**
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- **Found during:** Task 1 (pre-existing, causing TypeScript compile failure)
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- **Issue:** ChatConversation, ChatMessage, and 3 other types were exported twice from `packages/shared/src/index.ts` — once at line 569 and again at line 622. This caused `TS2300: Duplicate identifier` errors.
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- **Fix:** Removed the redundant second export block (lines 622-628)
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- **Files modified:** `packages/shared/src/index.ts`
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- **Commit:** 6eca2eff
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**2. [Rule 1 - Bug] Added missing postMessageAndStream and savePartialMessage to chatApi**
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- **Found during:** Task 1 (pre-existing — useStreamingChat.ts and useStreamingChat.test.ts both referenced these methods but they were absent from chat.ts)
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- **Issue:** `useStreamingChat.ts` called `chatApi.postMessageAndStream` and `chatApi.savePartialMessage`, and the test file mocked them, but neither method existed in `ui/src/api/chat.ts`. The 22-01 SUMMARY stated they were added, but they were not present.
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- **Fix:** Added both methods with correct SSE ReadableStream parsing and partial message saving
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- **Files modified:** `ui/src/api/chat.ts`
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- **Commit:** 6eca2eff
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**3. [Rule 3 - Blocking] Installed @testing-library/react devDependency**
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- **Found during:** Task 1 verification (tsc --noEmit)
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- **Issue:** `@testing-library/react ^16.0.0` was in `ui/package.json` devDependencies but not installed; `useStreamingChat.test.ts` imports it causing TS2307 error
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- **Fix:** Ran `pnpm install` to install the declared but missing dependency
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- **Commit:** included in 6eca2eff
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## Known Stubs
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None affecting this plan's goal. The `streamEcho` stub in the server yields word-by-word with 50ms delay — this is intentional and documented (Phase 23 replaces with real LLM adapter per DECISIONS.md).
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## Self-Check: PASSED
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