Trigger a return-poll catch-up drain
Trigger a return-poll catch-up drain
Derives the participants awaiting a return for the request tenant and drives the return-processing pipeline (poll, correlate, transition) once per participant, the same work the scheduled worker runs. RBAC: connectivity:admin. Inbound and not window-gated. It drives the idempotent return-processing pipeline (apply only if the operation is in the expected source state), so it runs lock-free and is safe to run concurrently with the worker.
POST
Trigger a return-poll catch-up drain

