v1.8.1

Release v1.8.1 - SSH connection stability improvements

- Add configurable timeout settings (connection, jump host, command, SFTP)
- Implement smart reconnection with exponential backoff
- Add error classifier to distinguish temporary vs permanent errors
- Implement layered heartbeat detection (TCP/SSH/App)
- Add connection pool health check and session warmup
- Add network adaptive settings for dynamic parameter adjustment
- Add connection status event system for real-time monitoring

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>