---
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*