sequenceDiagram participant UI as Client participant WS as Gateway participant OWNER as Owner runtime participant H as messages handler participant SVC as MessageCommandService participant API as MessagesApi participant TG as TDLib participant UPD as UpdateRuntimeService UI->>WS: {"action": "send_message", ...} WS->>OWNER: publish_command(send_message) OWNER->>H: dispatch_command_payload(...) H->>SVC: send_message(...) SVC->>API: send_message_text(...) or cloud media path API->>TG: call_method(...) TG-->>API: ok / error API-->>H: {ok, result, error} H-->>UI: send_message or send_message_error TG-->>UPD: updateNewMessage / updateMessageSendSucceeded / ... UPD-->>UI: live update events