{"name":"workflows-spike","usage":{"POST /scenario/buffer":"Body: { preWaitDelayMs?: number, waitTimeoutSeconds?: number }","POST /scenario/race":"Body: { waitTimeoutSeconds?: number } (callback base URL auto-detected)","POST /scenario/terminate":"Body: { waitTimeoutSeconds?: number }","POST /send-event":"Body: { instanceId, type, payload } - fires sendEvent on the target instance","POST /terminate/:instanceId":"Terminates the given instance","GET  /instance/:instanceId":"Returns instance status + output"}}