Report an external decision (e.g. Approve / Review / Deny) back to a waiting "Wait For Decision" automation step. The run is matched by automation_data_uuid; when that is missing or does not match, it falls back to loan_id and resolves the most recent active run currently waiting on a wait-for-decision step for that loan. The payload is merged into the run at the step's server-configured response key, where the step's evaluation rules pick it up on the next poll. Permission: Update Automation Data (client scope automationData.update).