docs(02-02): complete thread frontend UI plan

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.planning/ROADMAP.md

@@ -45,7 +45,7 @@ Plans:
   2. User can add candidate products to a thread with weight, price, notes, and product link
   3. User can edit and remove candidates from an active thread
   4. User can resolve a thread by selecting a winning candidate, which automatically creates a new item in their collection and archives the thread
-**Plans:** 3 plans
+**Plans:** 2/3 plans executed
 
 Plans:
 - [ ] 02-01-PLAN.md — Backend API: thread/candidate CRUD, resolution transaction, with TDD
@@ -75,5 +75,5 @@ Phases execute in numeric order: 1 -> 2 -> 3
 | Phase | Plans Complete | Status | Completed |
 |-------|----------------|--------|-----------|
 | 1. Foundation and Collection | 4/4 | Complete    | 2026-03-14 |
-| 2. Planning Threads | 0/3 | In progress | - |
+| 2. Planning Threads | 2/3 | In Progress|  |
 | 3. Setups and Dashboard | 0/0 | Not started | - |

.planning/STATE.md

@@ -2,15 +2,15 @@
 gsd_state_version: 1.0
 milestone: v1.0
 milestone_name: milestone
-status: in-progress
-stopped_at: Completed 02-01-PLAN.md
-last_updated: "2026-03-15T10:39:24Z"
-last_activity: 2026-03-15 — Completed 02-01 thread backend API
+status: executing
+stopped_at: Completed 02-02-PLAN.md
+last_updated: "2026-03-15T10:46:26Z"
+last_activity: 2026-03-15 — Completed 02-02 thread frontend UI
 progress:
   total_phases: 3
   completed_phases: 1
   total_plans: 7
-  completed_plans: 5
+  completed_plans: 6
   percent: 71
 ---
 
@@ -26,11 +26,11 @@ See: .planning/PROJECT.md (updated 2026-03-14)
 ## Current Position
 
 Phase: 2 of 3 (Planning Threads)
-Plan: 1 of 3 in current phase
+Plan: 2 of 3 in current phase
 Status: In progress
-Last activity: 2026-03-15 — Completed 02-01 thread backend API
+Last activity: 2026-03-15 — Completed 02-02 thread frontend UI
 
-Progress: [███████---] 71%
+Progress: [█████████░] 86%
 
 ## Performance Metrics
 
@@ -54,6 +54,7 @@ Progress: [███████---] 71%
 | Phase 01 P03 | 3min | 2 tasks | 16 files |
 | Phase 01 P04 | 3min | 2 tasks | 5 files |
 | Phase 02 P01 | 5min | 2 tasks | 9 files |
+| Phase 02 P02 | 4min | 2 tasks | 10 files |
 
 ## Accumulated Context
 
@@ -75,6 +76,9 @@ Recent decisions affecting current work:
 - [Phase 02-01]: Drizzle sql template literals use raw table.column refs in correlated subqueries (not interpolated)
 - [Phase 02-01]: Thread deletion collects candidate image filenames before cascade for filesystem cleanup
 - [Phase 02-01]: Resolution validates categoryId existence, falls back to Uncategorized (id=1)
+- [Phase 02-02]: Tab navigation uses URL search params (?tab=gear|planning) for shareable URLs
+- [Phase 02-02]: Candidate panel runs as separate SlideOutPanel instance with independent uiStore state
+- [Phase 02-02]: Resolution invalidates threads, items, and totals queries for cross-tab data freshness
 
 ### Pending Todos
 
@@ -87,6 +91,6 @@ None yet.
 
 ## Session Continuity
 
-Last session: 2026-03-15T10:39:24Z
-Stopped at: Completed 02-01-PLAN.md
-Resume file: .planning/phases/02-planning-threads/02-01-SUMMARY.md
+Last session: 2026-03-15T10:46:26Z
+Stopped at: Completed 02-02-PLAN.md
+Resume file: .planning/phases/02-planning-threads/02-02-SUMMARY.md

.planning/phases/02-planning-threads/02-02-SUMMARY.md

@@ -0,0 +1,123 @@
+---
+phase: 02-planning-threads
+plan: 02
+subsystem: ui
+tags: [react, tanstack-router, tanstack-query, zustand, tabs, threads, candidates]
+
+requires:
+  - phase: 02-planning-threads
+    provides: Thread and candidate API endpoints at /api/threads
+  - phase: 01-foundation-and-collection
+    provides: SlideOutPanel, ConfirmDialog, ItemCard, ItemForm, CategoryPicker, ImageUpload, uiStore pattern
+provides:
+  - Tabbed home page with gear/planning views
+  - Thread list with card UI showing candidate count and price range
+  - Thread detail page with candidate card grid
+  - Candidate add/edit via slide-out panel with same fields as items
+  - Thread resolution flow with confirmation dialog and collection integration
+  - TanStack Query hooks for thread and candidate CRUD
+affects: [03-setups-and-dashboard]
+
+tech-stack:
+  added: []
+  patterns: [tab navigation via URL search params, dual slide-out panel pattern, cross-query invalidation on resolution]
+
+key-files:
+  created:
+    - src/client/hooks/useThreads.ts
+    - src/client/hooks/useCandidates.ts
+    - src/client/components/ThreadTabs.tsx
+    - src/client/components/ThreadCard.tsx
+    - src/client/components/CandidateCard.tsx
+    - src/client/components/CandidateForm.tsx
+    - src/client/routes/threads/$threadId.tsx
+  modified:
+    - src/client/stores/uiStore.ts
+    - src/client/routes/index.tsx
+    - src/client/routes/__root.tsx
+
+key-decisions:
+  - "Tab navigation uses URL search params (?tab=gear|planning) via TanStack Router validateSearch for shareable URLs"
+  - "Candidate panel runs alongside item panel as separate SlideOutPanel instance, controlled by independent uiStore state"
+  - "Resolution invalidates threads, items, and totals queries for cross-tab data freshness"
+  - "FAB hidden on thread detail pages to avoid confusion between item add and candidate add"
+
+patterns-established:
+  - "Tab navigation pattern: URL search params with z.enum().catch() for default, ThreadTabs renders underline indicator"
+  - "Dual panel pattern: root layout renders two SlideOutPanel instances with independent open/close state"
+  - "Cross-query invalidation: useResolveThread invalidates threads + items + totals on success"
+
+requirements-completed: [THRD-01, THRD-02, THRD-03, THRD-04]
+
+duration: 4min
+completed: 2026-03-15
+---
+
+# Phase 2 Plan 02: Thread Frontend UI Summary
+
+**Tabbed home page with thread list cards, candidate grid detail view, slide-out candidate CRUD, and resolution flow that adds winners to the collection**
+
+## Performance
+
+- **Duration:** 4 min
+- **Started:** 2026-03-15T10:42:22Z
+- **Completed:** 2026-03-15T10:46:26Z
+- **Tasks:** 2
+- **Files modified:** 10
+
+## Accomplishments
+- Tabbed home page switching between My Gear collection and Planning thread list
+- Thread cards displaying name, candidate count, creation date, and price range chips
+- Thread detail page with candidate card grid matching ItemCard visual style
+- Candidate add/edit via slide-out panel with all item fields (name, weight, price, category, notes, URL, image)
+- Resolution confirmation dialog that picks winner, creates collection item, and archives thread
+- 63 existing tests still pass with zero regressions
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Hooks, store, tab navigation, and thread list** - `a9d624d` (feat)
+2. **Task 2: Thread detail page with candidate CRUD and resolution flow** - `7d043a8` (feat)
+
+## Files Created/Modified
+- `src/client/hooks/useThreads.ts` - TanStack Query hooks for thread CRUD and resolution
+- `src/client/hooks/useCandidates.ts` - TanStack Query mutation hooks for candidate CRUD
+- `src/client/stores/uiStore.ts` - Extended with candidate panel and resolve dialog state
+- `src/client/components/ThreadTabs.tsx` - Tab switcher with active underline indicator
+- `src/client/components/ThreadCard.tsx` - Thread list card with candidate count and price range chips
+- `src/client/components/CandidateCard.tsx` - Candidate card with edit, delete, and pick winner actions
+- `src/client/components/CandidateForm.tsx` - Candidate form with dollar-to-cents conversion
+- `src/client/routes/index.tsx` - Refactored to tabbed HomePage with CollectionView and PlanningView
+- `src/client/routes/threads/$threadId.tsx` - Thread detail page with candidate grid
+- `src/client/routes/__root.tsx` - Added candidate panel, delete dialog, and resolve dialog
+
+## Decisions Made
+- Tab navigation uses URL search params (?tab=gear|planning) for shareable/bookmarkable URLs
+- Candidate panel is a separate SlideOutPanel instance with independent state in uiStore
+- Resolution invalidates threads, items, and totals queries to keep cross-tab data fresh
+- FAB hidden on thread detail pages to avoid confusion between item add and candidate add
+- useMatchRoute detects thread detail page in root layout for candidate panel context
+
+## Deviations from Plan
+
+None - plan executed exactly as written.
+
+## Issues Encountered
+None.
+
+## User Setup Required
+None - no external service configuration required.
+
+## Next Phase Readiness
+- Full thread planning workflow operational end-to-end
+- Thread and candidate UI consumes all API endpoints from Plan 01
+- Ready for Phase 3 (Setups and Dashboard) which may reference threads for impact preview
+
+---
+*Phase: 02-planning-threads*
+*Completed: 2026-03-15*
+
+## Self-Check: PASSED
+
+All 10 files verified present. Both commit hashes (a9d624d, 7d043a8) verified in git log.