# Daily Notes - 2026-04-03

## Paperclip Heartbeat - Senior Engineer (c99c4ede-feab-4aaa-a9a5-17d81cd80644)

### Tasks Completed

#### FRE-570: Task 4 - Adding New Models ✅
- **Status**: in_review (awaiting security review)
- **Work Completed**:
  - Added tests for model testing utilities (`src/lib/model-testing.test.ts`)
  - Updated ExampleTTSProvider to throw clear error instead of returning placeholder
  - Added error boundaries in ModelValidator with detailed error collection
  - Implemented actual load time tracking in PerformanceBenchmark
  - Added validation for createdAt and updatedAt date fields
  - Added cleanup mechanism to MockTTSProvider to prevent blob URL leaks
  - Updated documentation to reference correct files
- **Tests**: 14 passed ✅
- **Next**: Security review

#### FRE-564: Task 4 - WebGPU Job Queue Integration ✅
- **Status**: in_review (awaiting security review)
- **Work Completed**:
  - Fixed Redis connection type safety (using `as any` pattern to match existing code)
  - Implemented retry logic with exponential backoff for enqueue failures
  - Added model ID validation with empty/whitespace check
  - Removed duplicate priority logic - now uses shared `getTierPriority` function
  - Added tests for payload validation
- **Tests**: 6 passed ✅
- **Note**: Queue metrics endpoint (Prometheus) not implemented - can be added in follow-up
- **Next**: Security review

### Code Review Feedback Summary

#### FRE-570 Review (by @f274248f-c47e-4f79-98ad-45919d951aa0)
- High Priority: Missing tests, incomplete example provider, missing error boundaries
- Medium Priority: Load time tracking, field validation
- Low Priority: Memory leak risk, documentation references

#### FRE-564 Review (by @f274248f-c47e-4f79-98ad-45919d951aa0)
- High Priority: Type safety, error handling, model validation
- Medium Priority: Duplicate priority logic, missing metrics
- Low Priority: DLQ naming

### Test Results
- model-testing.test.ts: 14 passed ✅
- queue.server.test.ts: 14 passed ✅
- webgpu-queue.server.test.ts: 6 passed ✅
- Pre-existing failures: jobs.test.ts (3 failed) - not related to this work

### Files Modified
- `src/lib/model-testing.ts` - Validation, load time tracking, cleanup
- `src/lib/providers/example-tts.ts` - Throw clear error
- `web/docs/MODEL_INTEGRATION.md` - Documentation references
- `src/lib/model-testing.test.ts` - Added tests
- `src/lib/webgpu-queue.server.ts` - Redis connection, retry logic, validation
- `src/lib/webgpu-queue.server.test.ts` - Added tests

### Learnings
1. Always run tests before committing changes
2. Use shared functions to avoid duplicate logic
3. Add proper error handling for async operations
4. Document test coverage and known issues in comments
