402cf8dade
Brings over 215 tests across 15 files covering the new multi-task framework: BaseTask / PipelineTask bus lifecycle, job RPC and job groups, the bus message hierarchy and serializers, TaskBus + AsyncQueueBus + RedisBus + PgmqBus (with direct and isolated backends), TaskRegistry, the BusBridgeProcessor, the WebSocket proxy tasks, the LLMTask deferral logic, and the PipelineRunner spawn-and-attach flow.