commit-message.md

feat(jobs): add JobsModule with BullMQ workers and Bull Board

Add a production-ready background job processing system:

• JobsModule with JobsService managing BullMQ queues and workers
• Queues: notifications, analytics, cleanup, scheduled, dead-letter
• Exponential backoff, DLQ, progress updates, and worker lifecycle handling
• JobsController to enqueue jobs via HTTP POST /api/1/jobs/:queue
• Bull Board mounted at /admin/queues for monitoring (optional, requires packages)
• Minimal unit tests and test mocks for Notifications repository

Notes:

• Redis is required (set REDIS_URL, defaults to redis://127.0.0.1:6379).
• Install runtime deps: npm install @nestjs/bullmq bullmq ioredis @bull-board/api @bull-board/express