feat: migrate worker job dispatch from DB polling to Redis Streams
- worker.go: add Redis fields, XADD on Enqueue, XREADGROUP BLOCK consumer
loop, sweep compensation for delayed/failed jobs, DB-polling fallback
when rdb is nil, XGroupCreateMkStream for idempotent consumer groups
- config.go: extend WorkerConfig with stream_prefix, consumer_group,
block_timeout_s, sweep_interval_s + defaults, env bindings, reloadable
- validator.go: validate new worker Redis fields
- bootstrap.go: fix concurrency bug (NewWorkerPoolWithOptions with Redis
+ cfg.Worker.Concurrency), reorder rdb init before worker pool
- config.dev.yaml/config.prod.yaml: add worker Redis params
- worker_test.go: 6 new miniredis tests (end-to-end, fallback, sweep,
multi-consumer competition, group creation, Redis failure recovery)
- config_test.go/reloader_test.go: adapt fixtures for new fields
rogee
762de6aa3b