---
phase: 06-category-icons
plan: 01
subsystem: database, api, ui
tags: [drizzle, sqlite, lucide-react, icons, migration]

requires:
  - phase: none
    provides: existing emoji-based categories schema
provides:
  - Categories table with icon column (Lucide icon names)
  - Zod schemas validating icon field
  - All services returning categoryIcon instead of categoryEmoji
  - LucideIcon render component for dynamic icon display
  - Curated icon data with 119 icons across 8 groups
  - EMOJI_TO_ICON_MAP for migration compatibility
affects: [06-02, 06-03]

tech-stack:
  added: [lucide-react]
  patterns: [kebab-case icon names with PascalCase runtime lookup]

key-files:
  created:
    - src/client/lib/iconData.ts
    - drizzle/0001_rename_emoji_to_icon.sql
  modified:
    - src/db/schema.ts
    - src/shared/schemas.ts
    - src/server/services/category.service.ts
    - src/server/services/item.service.ts
    - src/server/services/thread.service.ts
    - src/server/services/setup.service.ts
    - src/server/services/totals.service.ts
    - src/db/seed.ts
    - tests/helpers/db.ts

key-decisions:
  - "Used ALTER TABLE RENAME COLUMN for SQLite migration instead of table recreation"
  - "Applied migration directly via Bun SQLite API since drizzle-kit requires interactive input"
  - "119 curated icons across 8 groups for comprehensive gear coverage"

patterns-established:
  - "LucideIcon component: render any Lucide icon by kebab-case name string"
  - "Icon names stored as kebab-case strings in database and API"

requirements-completed: [CAT-03]

duration: 5min
completed: 2026-03-15
---

# Phase 6 Plan 1: Category Icon Data Layer Summary

**Migrated categories from emoji to Lucide icon names with curated 119-icon data set and LucideIcon render component**

## Performance

- **Duration:** 5 min
- **Started:** 2026-03-15T16:45:02Z
- **Completed:** 2026-03-15T16:50:15Z
- **Tasks:** 2
- **Files modified:** 18

## Accomplishments
- Renamed emoji column to icon across DB schema, Zod schemas, and all 5 services
- Created Drizzle migration with emoji-to-icon data conversion for existing categories
- Built iconData.ts with 119 curated gear-relevant Lucide icons across 8 groups
- Added LucideIcon component with kebab-to-PascalCase conversion and Package fallback
- All 87 tests pass, build succeeds

## Task Commits

Each task was committed atomically:

1. **Task 1: Migrate schema, Zod schemas, services, test helper, and seed to icon field** - `546dff1` (feat)
2. **Task 2: Install lucide-react and create icon data file with LucideIcon component** - `fca1eb7` (feat)

## Files Created/Modified
- `src/db/schema.ts` - Categories table now uses icon column with "package" default
- `src/shared/schemas.ts` - Zod schemas validate icon as string(1-50)
- `src/server/services/category.service.ts` - Parameter types use icon instead of emoji
- `src/server/services/item.service.ts` - Returns categoryIcon instead of categoryEmoji
- `src/server/services/thread.service.ts` - Returns categoryIcon in both list and detail
- `src/server/services/setup.service.ts` - Returns categoryIcon in setup item list
- `src/server/services/totals.service.ts` - Returns categoryIcon in category totals
- `src/db/seed.ts` - Seeds Uncategorized with icon "package"
- `tests/helpers/db.ts` - Test helper creates icon column, seeds with "package"
- `src/client/lib/iconData.ts` - Curated icon groups, LucideIcon component, emoji-to-icon map
- `drizzle/0001_rename_emoji_to_icon.sql` - Migration SQL with data conversion
- `package.json` - Added lucide-react dependency

## Decisions Made
- Used ALTER TABLE RENAME COLUMN for SQLite migration -- simpler than table recreation, supported in SQLite 3.25+
- Applied migration directly via Bun SQLite API since drizzle-kit push/generate requires interactive input for column renames
- Included 119 icons (slightly under the upper bound) for comprehensive gear coverage without bloat

## Deviations from Plan

### Auto-fixed Issues

**1. [Rule 3 - Blocking] Updated all test files referencing emoji/categoryEmoji**
- **Found during:** Task 1 (schema migration)
- **Issue:** Test files referenced emoji field and categoryEmoji property which no longer exist after schema rename
- **Fix:** Updated 6 test files to use icon/categoryIcon
- **Files modified:** tests/services/category.service.test.ts, tests/routes/categories.test.ts, tests/services/item.service.test.ts, tests/services/totals.test.ts, tests/services/setup.service.test.ts, tests/services/thread.service.test.ts
- **Verification:** All 87 tests pass
- **Committed in:** 546dff1 (Task 1 commit)

---

**Total deviations:** 1 auto-fixed (1 blocking)
**Impact on plan:** Test updates were necessary for correctness. No scope creep.

## Issues Encountered
- drizzle-kit generate/push commands require interactive input for column renames -- applied migration SQL directly via Bun SQLite API instead

## User Setup Required
None - no external service configuration required.

## Next Phase Readiness
- Icon data infrastructure complete, ready for UI component work (06-02: IconPicker, 06-03: display integration)
- Client-side still references categoryEmoji -- will be updated in subsequent plans

## Self-Check: PASSED

All created files verified, all commits found, all key exports confirmed.

---
*Phase: 06-category-icons*
*Completed: 2026-03-15*