docs(06-03): complete display component icon migration plan

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

.planning/REQUIREMENTS.md

@@ -26,7 +26,7 @@ Requirements for v1.1 Fixes & Polish. Each maps to roadmap phases.
 ### Categories
 
 - [x] **CAT-01**: User can select a Lucide icon when creating/editing a category (icon picker)
-- [ ] **CAT-02**: Category icons display as Lucide icons throughout the app (cards, headers, lists)
+- [x] **CAT-02**: Category icons display as Lucide icons throughout the app (cards, headers, lists)
 - [x] **CAT-03**: Existing emoji categories are migrated to equivalent Lucide icons
 
 ## Future Requirements
@@ -82,7 +82,7 @@ Which phases cover which requirements. Updated during roadmap creation.
 | PLAN-01 | Phase 4 | Complete |
 | PLAN-02 | Phase 4 | Complete |
 | CAT-01 | Phase 6 | Complete |
-| CAT-02 | Phase 6 | Pending |
+| CAT-02 | Phase 6 | Complete |
 | CAT-03 | Phase 6 | Complete |
 
 **Coverage:**

.planning/STATE.md

@@ -3,15 +3,15 @@ gsd_state_version: 1.0
 milestone: v1.1
 milestone_name: Fixes & Polish
 status: executing
-stopped_at: Completed 06-02 category icon UI components
+stopped_at: Completed 06-03 display component icon migration
-last_updated: "2026-03-15T16:59:03.899Z"
+last_updated: "2026-03-15T16:59:16.000Z"
-last_activity: 2026-03-15 -- Completed 06-02 category icon UI components
+last_activity: 2026-03-15 -- Completed 06-03 display component icon migration
 progress:
   total_phases: 3
-  completed_phases: 2
+  completed_phases: 3
   total_plans: 7
-  completed_plans: 6
+  completed_plans: 7
-  percent: 86
+  percent: 100
 ---
 
 # Project State
@@ -26,11 +26,11 @@ See: .planning/PROJECT.md (updated 2026-03-15)
 ## Current Position
 
 Phase: 6 of 6 (Category Icons)
-Plan: 2 of 3 in current phase
+Plan: 3 of 3 in current phase
-Status: In Progress
+Status: Complete
-Last activity: 2026-03-15 -- Completed 06-02 category icon UI components
+Last activity: 2026-03-15 -- Completed 06-03 display component icon migration
 
-Progress: [█████████░] 86% (v1.1 phases)
+Progress: [██████████] 100% (v1.1 phases)
 
 ## Accumulated Context
 
@@ -49,6 +49,7 @@ Progress: [█████████░] 86% (v1.1 phases)
 - [Phase 06]: Applied migration via Bun SQLite API since drizzle-kit requires interactive input
 - [Phase 06]: 119 curated Lucide icons across 8 groups for gear coverage
 - [Phase 06]: Native HTML select cannot render React components -- category selects show name only
+- [Phase 06]: iconData.ts renamed to iconData.tsx -- contains JSX, required for production build
 
 ### Pending Todos
 
@@ -58,10 +59,10 @@ None.
 
 - `threads` table missing from database (schema exists, never pushed) -- Phase 4
 - ~~Images upload but don't display in UI -- Phase 5~~ FIXED in 05-01
-- Category emoji system being replaced with Lucide icons -- Phase 6
+- ~~Category emoji system being replaced with Lucide icons -- Phase 6~~ COMPLETE
 
 ## Session Continuity
 
-Last session: 2026-03-15T16:59:03.897Z
+Last session: 2026-03-15T16:59:16.000Z
-Stopped at: Completed 06-02 category icon UI components
+Stopped at: Completed 06-03 display component icon migration
-Resume file: None
+Resume file: .planning/phases/06-category-icons/06-03-SUMMARY.md

.planning/phases/06-category-icons/06-03-SUMMARY.md

@@ -0,0 +1,134 @@
+---
+phase: 06-category-icons
+plan: 03
+subsystem: ui
+tags: [lucide-react, icons, react, components, cleanup]
+
+requires:
+  - phase: 06-01
+    provides: LucideIcon component, categoryIcon field in API responses
+provides:
+  - All display components render Lucide icons instead of emoji
+  - Zero emoji references remaining in source code
+  - Old EmojiPicker and emojiData files removed
+affects: []
+
+tech-stack:
+  added: []
+  patterns: [LucideIcon at 36px for card placeholders, 14-16px for inline badges]
+
+key-files:
+  created: []
+  modified:
+    - src/client/components/ItemCard.tsx
+    - src/client/components/CandidateCard.tsx
+    - src/client/components/ThreadCard.tsx
+    - src/client/components/ItemPicker.tsx
+    - src/client/hooks/useItems.ts
+    - src/client/hooks/useThreads.ts
+    - src/client/hooks/useSetups.ts
+    - src/client/hooks/useTotals.ts
+    - src/client/hooks/useCategories.ts
+    - src/client/routes/collection/index.tsx
+    - src/client/routes/setups/$setupId.tsx
+    - src/client/routes/threads/$threadId.tsx
+
+key-decisions:
+  - "Renamed iconData.ts to iconData.tsx since it contains JSX (LucideIcon component)"
+
+patterns-established:
+  - "LucideIcon sizing: 36px for card placeholder areas, 14px for category badge pills, 16px for inline category labels"
+
+requirements-completed: [CAT-02]
+
+duration: 6min
+completed: 2026-03-15
+---
+
+# Phase 6 Plan 3: Display Component Icon Migration Summary
+
+**Migrated all display components from emoji text to LucideIcon rendering with consistent sizing across cards, badges, and headers**
+
+## Performance
+
+- **Duration:** 6 min
+- **Started:** 2026-03-15T16:53:10Z
+- **Completed:** 2026-03-15T16:59:16Z
+- **Tasks:** 2
+- **Files modified:** 13
+
+## Accomplishments
+- Replaced emoji text rendering with LucideIcon components in ItemCard, CandidateCard, ThreadCard, and ItemPicker
+- Updated all client-side hook interfaces from categoryEmoji to categoryIcon to match server API
+- Updated route files to pass icon prop to CategoryHeader and categoryIcon to card components
+- Removed old EmojiPicker.tsx and emojiData.ts files, zero emoji references remain
+- All 87 tests pass, build succeeds
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Update display components to use categoryIcon with LucideIcon** - `615c894` (feat)
+2. **Task 2: Update route files and delete old emoji files** - `9fcb07c` (chore)
+
+## Files Created/Modified
+- `src/client/components/ItemCard.tsx` - Renders LucideIcon at 36px in placeholder, 14px in badge
+- `src/client/components/CandidateCard.tsx` - Same LucideIcon pattern as ItemCard
+- `src/client/components/ThreadCard.tsx` - Renders LucideIcon at 16px next to category name
+- `src/client/components/ItemPicker.tsx` - Shows LucideIcon next to category group headers
+- `src/client/hooks/useItems.ts` - Interface: categoryEmoji -> categoryIcon
+- `src/client/hooks/useThreads.ts` - Interfaces: categoryEmoji -> categoryIcon in ThreadListItem and CandidateWithCategory
+- `src/client/hooks/useSetups.ts` - Interface: categoryEmoji -> categoryIcon
+- `src/client/hooks/useTotals.ts` - Interface: categoryEmoji -> categoryIcon
+- `src/client/hooks/useCategories.ts` - Mutation type: emoji -> icon
+- `src/client/lib/iconData.tsx` - Renamed from .ts to .tsx (contains JSX)
+- `src/client/routes/collection/index.tsx` - Passes icon to CategoryHeader, categoryIcon to cards
+- `src/client/routes/setups/$setupId.tsx` - Same icon prop updates
+- `src/client/routes/threads/$threadId.tsx` - Passes categoryIcon to CandidateCard
+
+## Decisions Made
+- Renamed iconData.ts to iconData.tsx since it contains JSX and the production build (rolldown) requires proper .tsx extension for JSX parsing
+
+## Deviations from Plan
+
+### Auto-fixed Issues
+
+**1. [Rule 3 - Blocking] Updated client hook interfaces to match server API**
+- **Found during:** Task 1 (display component updates)
+- **Issue:** Client-side TypeScript interfaces in hooks still referenced categoryEmoji but server API returns categoryIcon after Plan 01 migration
+- **Fix:** Updated interfaces in useItems, useThreads, useSetups, useTotals, and useCategories hooks
+- **Files modified:** 5 hook files
+- **Verification:** Build succeeds, types match API responses
+- **Committed in:** 615c894 (Task 1 commit)
+
+**2. [Rule 1 - Bug] Renamed iconData.ts to iconData.tsx**
+- **Found during:** Task 1 (build verification)
+- **Issue:** iconData.ts contains JSX (LucideIcon component) but had .ts extension, causing rolldown parse error during production build
+- **Fix:** Renamed file to .tsx
+- **Files modified:** src/client/lib/iconData.tsx (renamed from .ts)
+- **Verification:** Build succeeds
+- **Committed in:** 615c894 (Task 1 commit)
+
+---
+
+**Total deviations:** 2 auto-fixed (1 blocking, 1 bug)
+**Impact on plan:** Both fixes necessary for build correctness. No scope creep.
+
+## Issues Encountered
+- Plan 02 (IconPicker + component updates) had partial uncommitted work in the working tree. The CategoryHeader, CategoryPicker, OnboardingWizard, and CreateThreadModal were already updated to use icon/IconPicker. These changes were committed as part of the pre-commit flow.
+
+## User Setup Required
+None - no external service configuration required.
+
+## Next Phase Readiness
+- Category icon migration is complete across all layers: database, API, and UI
+- All components render Lucide icons consistently
+- Phase 6 is fully complete
+
+## Self-Check: PASSED
+
+All created files verified, all commits found, zero emoji references confirmed.
+
+---
+*Phase: 06-category-icons*
+*Completed: 2026-03-15*