- Implement new POST /microphone/stop endpoint
- Refactor mute handling to properly start/stop audio processes
- Add callback mechanism for audio relay to reconnect to current session
- Simplify UI microphone controls by combining mute/start-stop functionality
- Extract audio-related handlers into separate file for better organization
- Simplify session creation logic by removing duplicate code paths
- Add new Prometheus metrics for connection monitoring
- Reduce websocket ping interval from 30s to 15s for better responsiveness