Merge branch 'worktree-agent-a4608610' into Develop

# Conflicts:
#	.planning/ROADMAP.md
#	.planning/STATE.md
#	src/client/routes/threads/$threadId.tsx

.planning/phases/21-item-catalog-detail-pages/21-02-SUMMARY.md

@@ -0,0 +1,90 @@
+---
+phase: 21-item-catalog-detail-pages
+plan: 02
+subsystem: ui
+tags: [react, tanstack-router, candidate-detail, modal-dialog, edit-mode]
+
+requires:
+  - phase: 20-fab-full-screen-catalog-search
+    provides: FAB and catalog search overlay foundation
+provides:
+  - Candidate detail page at /threads/:threadId/candidates/:candidateId with edit mode
+  - Restructured thread route directory for nested candidate routes
+  - Add-candidate modal dialog on thread page replacing slide-out panel
+affects: [21-03-candidate-card-navigation-rewire]
+
+tech-stack:
+  added: []
+  patterns: [nested-route-directory-structure, local-modal-pattern]
+
+key-files:
+  created:
+    - src/client/routes/threads/$threadId/candidates/$candidateId.tsx
+  modified:
+    - src/client/routes/threads/$threadId/index.tsx
+
+key-decisions:
+  - "StatusBadge on detail page is read-only (no onStatusChange) since status cycling happens on cards"
+  - "AddCandidateModal defined inline in thread index.tsx rather than separate component file"
+  - "Candidate data fetched from useThread hook (find in candidates array) rather than new endpoint"
+
+patterns-established:
+  - "Nested route directory: $threadId/index.tsx + $threadId/candidates/$candidateId.tsx"
+  - "Local modal pattern: useState in parent page controls modal visibility, no UIStore needed"
+
+requirements-completed: [DETAIL-04]
+
+duration: 4min
+completed: 2026-04-06
+---
+
+# Phase 21 Plan 02: Candidate Detail Page & Thread Route Restructuring Summary
+
+**Candidate detail page with edit mode toggle at /threads/:threadId/candidates/:candidateId, thread route directory restructured for nested routes, add-candidate modal replacing slide-out panel**
+
+## Performance
+
+- **Duration:** 4 min
+- **Started:** 2026-04-06T12:57:42Z
+- **Completed:** 2026-04-06T13:02:26Z
+- **Tasks:** 2
+- **Files modified:** 2
+
+## Accomplishments
+- Restructured thread route from flat file to directory structure supporting nested candidate routes
+- Created full candidate detail page with read/edit modes, image display, pros/cons, notes, and thread actions
+- Replaced UIStore openCandidateAddPanel call with local modal dialog containing all form fields
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Restructure thread route and create candidate detail page** - `cecaf78` (feat)
+2. **Task 2: Add candidate modal dialog on thread page** - `47b416e` (feat)
+
+## Files Created/Modified
+- `src/client/routes/threads/$threadId/index.tsx` - Moved from $threadId.tsx, updated imports, added AddCandidateModal
+- `src/client/routes/threads/$threadId/candidates/$candidateId.tsx` - New candidate detail page with edit mode toggle
+
+## Decisions Made
+- StatusBadge rendered as read-only on detail page (status changes happen via card interactions)
+- AddCandidateModal defined inline in the thread page file for simplicity
+- Candidate data sourced from useThread hook (find in array) to avoid new API endpoint
+
+## Deviations from Plan
+
+None - plan executed exactly as written.
+
+## Issues Encountered
+None
+
+## User Setup Required
+None - no external service configuration required.
+
+## Next Phase Readiness
+- Candidate detail page is ready for Plan 03 to rewire CandidateCard clicks as navigation links
+- Thread route directory structure supports the nested /candidates/:candidateId path
+
+---
+*Phase: 21-item-catalog-detail-pages*
+*Completed: 2026-04-06*