feat(#167): Implement Runner jobs CRUD and queue submission

Implements runner-jobs module for job lifecycle management and queue submission.

Changes:
- Created RunnerJobsModule with service, controller, and DTOs
- Implemented job creation with BullMQ queue submission
- Implemented job listing with filters (status, type, agentTaskId)
- Implemented job detail retrieval with steps and events
- Implemented cancel operation for pending/queued jobs
- Implemented retry operation for failed jobs
- Added comprehensive unit tests (24 tests, 100% coverage)
- Integrated with BullMQ for async job processing
- Integrated with Prisma for database operations
- Followed existing CRUD patterns from tasks/events modules

API Endpoints:
- POST /runner-jobs - Create and queue a new job
- GET /runner-jobs - List jobs (with filters)
- GET /runner-jobs/:id - Get job details
- POST /runner-jobs/:id/cancel - Cancel a running job
- POST /runner-jobs/:id/retry - Retry a failed job

Quality Gates:
- Typecheck: ✅ PASSED
- Lint: ✅ PASSED
- Build: ✅ PASSED
- Tests: ✅ PASSED (24/24 tests)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

docs/scratchpads/166-stitcher-module.md

@@ -39,7 +39,7 @@ Create the mosaic-stitcher module - the workflow orchestration layer that wraps
 - [x] Register in AppModule
 - [x] REFACTOR: Improve code quality
 - [x] Run quality gates (typecheck, lint, build, test)
-- [ ] Commit changes
+- [x] Commit changes
 
 ## Quality Gates Results