## Task 7 — Cleanup test files

### Sync service spec
- `apps/server/src/sync/sync.service.spec.ts` was already deleted in commit `7b86918` (Task 4: remove importDingTalkUsers). No action needed.

### Attendance service spec
- `apps/server/src/attendance/attendance.service.spec.ts` already uses `StudentDingMapping` (lines 12, 42). No `UserDingMapping` references remain. Updated in commit `ef1b46b`.

### Verification
- `npx tsc --noEmit` in apps/server: 277 diagnostics, all pre-existing jest type errors (`@types/jest` not installed). Zero errors related to `UserDingMapping` or `StudentDingMapping`.
- No files to commit — both targets are already clean.

### Conclusion
Task complete with zero changes needed. Previous tasks (Task 4 entity rename, Task 2 import swap) already handled these test updates.