Initial commit: RF Mapper v0.3.0-dev

WiFi & Bluetooth signal mapping tool for Raspberry Pi with:
- WiFi scanning via iw command
- Bluetooth Classic/BLE device discovery
- RSSI-based distance estimation
- OUI manufacturer lookup
- Web dashboard with multiple views:
  - Radar view (polar plot)
  - 2D Map (Leaflet/OpenStreetMap)
  - 3D Map (MapLibre GL JS with building extrusion)
- Floor-based device positioning
- Live BT tracking mode (auto-starts on page load)
- SQLite database for historical device tracking:
  - RSSI time-series history
  - Device statistics (avg/min/max)
  - Movement detection and velocity estimation
  - Activity patterns (hourly/daily)
  - New device alerts
  - Automatic data retention/cleanup
- REST API for all functionality

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

CLAUDE.md

@@ -0,0 +1,52 @@
+# RF Mapper - Claude Context
+
+RF Environment Scanner for WiFi and Bluetooth signal mapping on Linux.
+
+## Key Documentation
+
+- **[USAGE.md](USAGE.md)** - User guide with CLI commands, web interface, configuration, and API reference
+- **[TODO.md](TODO.md)** - Pending features and improvements
+- **[config.yaml](config.yaml)** - Current configuration (GPS, web server, scanner, building settings)
+
+## Project Structure
+
+```
+src/rf_mapper/
+├── __main__.py      # CLI entry point and argument parsing
+├── scanner.py       # WiFi/Bluetooth scanning (WifiNetwork, BluetoothDevice dataclasses)
+├── config.py        # Configuration management (Config, BuildingConfig, etc.)
+├── distance.py      # RSSI to distance estimation
+├── oui.py           # MAC address manufacturer lookup
+├── bluetooth_*.py   # Bluetooth device identification and classification
+├── visualize.py     # ASCII radar and chart generation
+├── profiling.py     # CPU/memory profiling utilities
+└── web/
+    ├── app.py       # Flask application and API endpoints
+    ├── templates/   # Jinja2 HTML templates (base.html, index.html)
+    └── static/      # CSS, JS, vendor libraries (Leaflet, MapLibre GL)
+```
+
+## Key Files for Common Tasks
+
+| Task | Files |
+|------|-------|
+| Add CLI command | `src/rf_mapper/__main__.py` |
+| Add API endpoint | `src/rf_mapper/web/app.py` |
+| Modify data model | `src/rf_mapper/scanner.py`, `config.py` |
+| Change web UI | `web/templates/index.html`, `static/js/app.js`, `static/css/style.css` |
+| Add configuration | `src/rf_mapper/config.py`, `config.yaml` |
+
+## Running
+
+```bash
+source venv/bin/activate
+rf-mapper web          # Web interface at http://localhost:5000
+rf-mapper scan -l room # CLI scan
+rf-mapper --help       # All commands
+```
+
+## Tech Stack
+
+- Python 3.10+, Flask, PyYAML
+- Leaflet.js (2D maps), MapLibre GL JS (3D maps)
+- Linux tools: `iw`, `hcitool`, `bluetoothctl`