- Created create_icon.py script to generate network/discovery-themed icon
- Generated mbetter_discovery_icon.ico with multiple sizes (16x16 to 256x256)
- Updated Windows PyInstaller spec to use the icon
- Enhanced setup_discovery.py to automatically create icon during build
- Added icon preview PNG file for development reference

The icon features:
- Blue circular background with network theme
- Concentric radar circles representing discovery
- Signal waves for larger icon sizes
- Professional Windows executable appearance