feat(phase3): phase 7 - integration & polish

Fix all build/type/lint errors, write 46 new tests (222 total across
20 files), regenerate Prisma client, update seed with user preferences.
Fix SvelteSet usage, add {#each} keys, clean unused imports.

plans/phase-3-advanced-features/phase-7-integration.md

@@ -1,21 +1,29 @@
 # Phase 7: Integration & Polish
 
-**Status:** ⬜ Not Started
+**Status:** ✅ Complete
 **Parent plan:** [PLAN.md](./PLAN.md)
 **Domain:** fullstack
 
 ## Tasks
-- [ ] Task 1: Fix all TypeScript/build errors
-- [ ] Task 2: Verify `npm run build` succeeds
-- [ ] Task 3: Verify `npm run check` passes
-- [ ] Task 4: Verify `npm run lint` passes
-- [ ] Task 5: Write tests for export/import services
-- [ ] Task 6: Write tests for discovery service
-- [ ] Task 7: Write tests for user preferences API
-- [ ] Task 8: Write tests for quick-add API
-- [ ] Task 9: Update seed script with sample data
-- [ ] Task 10: Verify all existing tests pass
-- [ ] Task 11: Run Prisma migrations
+- [x] Task 1: Fix all TypeScript/build errors
+- [x] Task 2: Verify `npm run build` succeeds
+- [x] Task 3: Verify `npm run check` passes (0 errors, warnings only)
+- [x] Task 4: Verify `npm run lint` passes (0 errors)
+- [x] Task 5: Write tests for export/import services
+- [x] Task 6: Write tests for discovery service (mocked Docker/Traefik)
+- [x] Task 7: Write tests for user preferences API
+- [x] Task 8: Write tests for quick-add API
+- [x] Task 9: Write tests for broadcastSync utility
+- [x] Task 10: Update seed script with sample data (user preferences, quick-add style app)
+- [x] Task 11: Run Prisma generate (migrations already applied)
+- [x] Task 12: Verify all 222 tests pass across 20 test files
+
+## Changes Made
+
+- `prisma generate` — regenerated client with user preference fields
+- Fixed lint: SvelteSet for reactive Set in DiscoveryPanel, `{#each}` keys, unused vars
+- New tests: exportService (4), importService (9), discoveryService (10), preferences API (11), quick-add API (8), broadcastSync (4) = 46 new tests
+- Updated seed.ts: user preferences on admin/regular user, quick-add style Wiki.js app
 
 ## Handoff
 <!-- Final phase -->