Harness gap, not a protocol result: the sendspin-rs client adapter has no client-initiated path for scenario client-initiated-metadata {"client_id":"sendspin-rs-client-id","client_name":"sendspin-rs-client","implementation":"sendspin-rs","initiator_role":"client","metadata":{"received":null,"update_count":0},"peer_hello":null,"preferred_codec":"none","reason":"Harness gap, not a protocol result: the sendspin-rs client adapter has no client-initiated path for scenario client-initiated-metadata","role":"client","scenario_id":"client-initiated-metadata","server":null,"status":"error"}