---
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*
