Unit tests: StreamConnector, PooledConnection, RedisPool, HttpPool, MysqlPool,
MetricsPublisher, WorkerSnapshot, Notifications, WorkerProcess, CoroutineContext,
DeadLetterHandler (trim, validation, truncation)

Feature tests: all 7 CLI commands, ServiceProvider, Dashboard auth/gate,
MasterProcess PID file handling

Integration tests: 14 StreamQueue scenarios with real Redis (push, pop, ack,
release, delayed, pending, consumer groups, multi-queue isolation)