- Add CONTROL_SERVER_HOST environment variable (default: 0.0.0.0)
- Server now binds to all interfaces by default for external access
- Update .env and .env.example with new host configuration
- Allows UI clients to connect from other machines on the network
- Add python-dotenv support to control_server.py and sound.py
- Load TRANSPORT from environment variable (default: spi)
- Load AUDIO_INPUT_DEVICE from environment variable (default: 7)
- Load all port configurations from environment variables
- Update .env.example with comprehensive configuration options
- Create .env file with sensible defaults for Pi
- Transport, sound device, and network settings now configurable via .env
