- Add new LoRa backend route (routes/lora.py) with:
- Frequency band definitions (EU868, US915, AU915, AS923, IN865, ISM433)
- Start/stop/stream/status endpoints using rtl_433
- Device pattern matching for LoRa/LPWAN devices
- Signal quality calculation from RSSI
- Add LoRa frontend UI with:
- Navigation button in SDR/RF group
- Band selector with channel presets
- Visualization layout (radar, device types, signal quality, activity log)
- Device card list with selection details
- Header stats for devices and signals
- Fix Bias-T toggle visibility for Listening Post and LoRa modes
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>