- Wrap tryRefreshSession in try-finally to ensure authRecoveryInFlight is always reset
- Fix variable scope issue: use const tabState instead of reassigning d
- Add error handling for process.stdin.write() to catch BrokenPipeError/OSError
- Verify WebSocket instance before closing in ping timeout callback
- Properly await conn.wait_closed() to prevent SSH connection leaks
- Gracefully cancel and wait for read_task with 2s timeout
These fixes prevent race conditions, resource leaks, and improve error recovery.
Gan, Jimmy