StreamSubmitOptions

The assistant config.

Fork the run from an explicit checkpoint instead of the thread's latest. Ergonomic alias the SDK folds into config.configurable.checkpoint_id before dispatching the run, so the server receives the fork target via the single legacy-compliant field (never a top-level forkFrom).

Strategy to handle concurrent runs on the same thread. Only relevant if there is a pending/inflight run on the same thread. One of:

• "reject": Reject the new run.
• "interrupt": Interrupt the current run, keeping steps completed until now, and start a new one.
• "rollback": Cancel and delete the existing run, rolling back the thread to the state before it had started, then start the new run.
• "enqueue": Queue up the new run to start after the current run finishes.

Callback that is called when an error occurs.

Abort controller signal to cancel the run.

Thread ID this transport currently targets.