Module session 

WSOperatorSession: the 3-trait (SeniorBridge/SpawnHook/Operator) WS session object. WSOperatorSession: 1 sid = 1 session = 3 traits co-hosted (SeniorBridge / SpawnHook / Operator). Registered simultaneously into 3 registries under the same sid — the canonical pattern where 1 WS connection covers all 3 faces of the Operator role (judgment / observation / execution).

tx is a Mutex<Option<Sender>>: None on disconnect, swappable to Some(new_tx) on reconnect. The pending HashMap persists on the session side, so a client holding answer/ack values across a disconnect can reconnect and resend them.

For the detailed S↔C message flow, see the overview figure in mod.rs.

Structs

WSOperatorSession

1 sid = 1 session. Looked up by sid in the operator_sessions store on reconnect.