Introduce DisconnectInfo with reason/error so consumers can distinguish
heartbeat timeouts from remote close, write errors, and parse failures.
Wire reasons through TCP/WS read and write paths.
Fix the heartbeat wait-timer to re-check waitingHBResponse when firing:
in paired idle (both peers heartbeat in the same cycle) the response
could arrive while the wait timer was being installed, causing a stale
disconnect. The timer now re-arms the interval instead of disconnecting
when the response was already observed.
Add regression tests: TestHeartbeatSurvivesPairedIdle, and assert
DisconnectInfo.Reason == heartbeat_timeout in the legitimate timeout
tests for both TCP and WebSocket.
- Rename package/module from toki_socket to proto_socket in Dart, Kotlin, Python
- Update crosstest implementations to use renamed packages
- Add new proto_socket skill, deprecate add-toki-socket-crosstest-language skill
- Update domain rules for all languages
- Update documentation (README, PORTING_GUIDE, PROTOCOL, VERSIONING)
- Dart: Add explicit Future<void> return type to send() method
- Dart: Improve onDisconnected() logic with proper isAlive handling and heartbeat response
- Go: Introduce baseClient generic base class for shared client logic
- Go: Refactor TcpClient and WsClient to embed baseClient instead of embedding Communicator
- Remove duplicate heartbeat and disconnect handling code across client implementations
- Clean up unused imports (time package)
