Reliable real-time event streaming in custom workflow steps

We restored reliable live event streaming across Agents and Teams workflows, ensuring events from custom executor steps are delivered consistently. Functions that yield BaseModel are now handled correctly, and redundant completion checks were removed. The result is accurate, ordered streaming to UIs, logs, and monitors during long-running steps — without any changes required on your end.

Details

Streaming from custom executor steps now propagates to clients in real time
Support for generators that yield BaseModel ensures consistent serialization and display
Removes duplicate completion events to prevent premature stream termination and UI flapping

Who this is for: Teams building Agent/Team workflows that power interactive UIs, long-running automations, or observability pipelines.