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+---
+phase: 06-lab-advisor
+plan: "03"
+subsystem: frontend
+tags: [advisor, chat, streaming, sse, react, tanstack-query]
+dependency_graph:
+  requires: [06-02]
+  provides: [advisor-ui, streaming-chat-frontend]
+  affects: [web/src/router.tsx, web/src/components/layout/TopBar.tsx, web/src/components/layout/AppShell.tsx]
+tech_stack:
+  added: []
+  patterns: [ReadableStream SSE parsing, TanStack Query refetchInterval sidebar, optimistic user messages, streaming cursor animation]
+key_files:
+  created:
+    - web/src/api/advisor.ts
+    - web/src/pages/AdvisorPage.tsx
+  modified:
+    - web/src/router.tsx
+    - web/src/components/layout/TopBar.tsx
+    - web/src/components/layout/AppShell.tsx
+decisions:
+  - "Used fetch + ReadableStream instead of EventSource for SSE — POST body required for chat endpoint"
+  - "Used a ref (streamingContentRef) alongside state to capture latest streaming content inside async callbacks without stale closure issues"
+  - "Added noPadding prop to AppShell to support full-height two-panel layout without max-width constraint"
+  - "Model label in sidebar shows only the model slug (after /) to keep sidebar compact"
+metrics:
+  duration: "~8 minutes"
+  completed: "2026-04-10T07:39:59Z"
+  tasks_completed: 2
+  files_changed: 5
+---
+
+# Phase 06 Plan 03: AdvisorPage Frontend Summary
+
+**One-liner:** Two-panel streaming chat UI at /advisor — sidebar conversation list, fetch+ReadableStream SSE token streaming, model dropdown, ClickHouse dark theme.
+
+## Tasks Completed
+
+| # | Task | Commit | Files |
+|---|------|--------|-------|
+| 1 | API wrappers for advisor endpoints | 811223d | web/src/api/advisor.ts |
+| 2 | AdvisorPage component, route, and TopBar link | bcc3608 | web/src/pages/AdvisorPage.tsx, web/src/router.tsx, web/src/components/layout/TopBar.tsx, web/src/components/layout/AppShell.tsx |
+
+## What Was Built
+
+### web/src/api/advisor.ts
+Typed API wrappers for all three advisor endpoints:
+- `fetchConversations()` — GET /api/advisor/conversations, returns `[]` on 404
+- `fetchConversation(id)` — GET /api/advisor/conversations/:id
+- `streamChat(params, onToken, onDone, onError)` — POST /api/advisor/chat, reads response.body via `getReader()` + `TextDecoder`, splits on `\n\n` SSE delimiters, parses `data:` lines, calls `onToken` per token and `onDone` on `[DONE]`
+
+### web/src/pages/AdvisorPage.tsx
+Full two-panel AdvisorPage:
+- Left sidebar (280px, hidden on mobile): "Lab Advisor" heading, "New Chat" button, conversation list with `refetchInterval: 5000`, selected state highlighted
+- Main panel: messages area (scrolls to bottom on new content), optimistic user messages (right-aligned bg-[#1a1a1a]), assistant messages (left-aligned bg-[#111]), streaming assistant turn with animated cursor
+- Input row: model `<select>` (4 OpenRouter models), textarea (Enter to send, Shift+Enter for newline), Send button disabled while streaming or empty
+- State: `streamingContentRef` ref pattern avoids stale closure in async SSE callbacks while `streamingContent` state drives render
+
+### web/src/router.tsx
+Lazy `AdvisorPage` import + `advisorRoute` at path `/advisor` added to route tree.
+
+### web/src/components/layout/TopBar.tsx
+`MessageSquare` icon + Advisor `Button variant="outline"` link inserted between Test and Scan buttons.
+
+### web/src/components/layout/AppShell.tsx
+Added `noPadding?: boolean` prop — when true, wraps children in `flex-1 flex flex-col overflow-hidden` instead of the default padded/max-width container. Required for AdvisorPage's full-viewport two-panel layout.
+
+## Deviations from Plan
+
+### Auto-fixed Issues
+
+**1. [Rule 2 - Missing Feature] AppShell noPadding prop**
+- **Found during:** Task 2
+- **Issue:** AppShell forced `px-4 py-6 max-w-7xl mx-auto` padding on all pages. AdvisorPage needs a full-height flex container with no max-width for the two-panel sidebar+chat layout.
+- **Fix:** Added `noPadding?: boolean` prop to AppShell. When true, renders `flex-1 flex flex-col overflow-hidden` wrapper. Backward compatible — all existing pages unaffected.
+- **Files modified:** web/src/components/layout/AppShell.tsx
+- **Commit:** bcc3608
+
+## Known Stubs
+
+None — all data flows are wired to real backend endpoints from plan 06-02. Conversations and messages load from the API; streaming connects to POST /api/advisor/chat.
+
+## Threat Surface Scan
+
+No new network endpoints or auth paths introduced in this plan. All frontend calls go to existing backend endpoints established in 06-02. Assistant message tokens rendered as React text nodes (JSX children) — no `dangerouslySetInnerHTML` used anywhere. T-06-03-01 (XSS) mitigated.
+
+## Self-Check: PASSED
+
+- [x] web/src/api/advisor.ts — created
+- [x] web/src/pages/AdvisorPage.tsx — created
+- [x] web/src/router.tsx — /advisor route added
+- [x] web/src/components/layout/TopBar.tsx — Advisor link added
+- [x] web/src/components/layout/AppShell.tsx — noPadding prop added
+- [x] Commit 811223d — feat(06-03): add advisor API wrappers
+- [x] Commit bcc3608 — feat(06-03): add AdvisorPage, /advisor route, and TopBar link
+- [x] `npm run build` — exits 0, AdvisorPage-C_DruhTJ.js 6.72 kB in bundle