~x-ai/grok-latest → B (1:4)

B fixes a real tokio RwLock reentrancy deadlock by scoping read guards before nested awaits in RoomCreate/RoomGrant, and hardens tests (log-file piping, HTTP timeouts, auth username expectations) so the server stays usable. A only formats already-available ConnectivityStats for CLI display plus two unit tests—a useful UX nicety, but not a correctness or infrastructure fix of comparable lasting weight.