diff --git a/CLAUDE.md b/CLAUDE.md
index de3d8be..29bf196 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -2,11 +2,23 @@
 
 RF Environment Scanner for WiFi and Bluetooth signal mapping on Linux.
 
-## Key Documentation
+## Key Documentation (Maintain These!)
+
+| File | Purpose | When to Update |
+|------|---------|----------------|
+| **[TASKS.md](TASKS.md)** | Current sprint tasks, priorities (P0-P3), status | Start/end of each work session |
+| **[TODO.md](TODO.md)** | Backlog by category, completed items | When adding/completing features |
+| **[ROADMAP.md](ROADMAP.md)** | Version milestones, long-term vision | When milestones change |
+| **[CHANGELOG.md](CHANGELOG.md)** | Version history, notable changes | Each release |
+| **[PROJECT.md](PROJECT.md)** | Goals, architecture, dependencies | Major architectural changes |
+| **[USAGE.md](USAGE.md)** | User guide, CLI, web interface, API | When adding features |
+| **[docs/CHEATSHEET.md](docs/CHEATSHEET.md)** | Quick reference commands | When adding features |
+| **[INVENTORY.md](INVENTORY.md)** | Multi-node deployment info (gitignored) | When nodes change |
+
+## Configuration
 
-- **[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)
+- **[docs/HOME_ASSISTANT.md](docs/HOME_ASSISTANT.md)** - Home Assistant webhook integration
 
 ## Project Structure
 
@@ -22,6 +34,8 @@ src/rf_mapper/
 ├── bluetooth_*.py   # Bluetooth device identification and classification
 ├── visualize.py     # ASCII radar and chart generation
 ├── profiling.py     # CPU/memory profiling utilities
+├── termux.py        # Termux/Android environment detection
+├── sync.py          # Multi-scanner peer sync
 └── web/
     ├── app.py       # Flask application and API endpoints
     ├── templates/   # Jinja2 HTML templates (base.html, index.html)
@@ -38,6 +52,8 @@ src/rf_mapper/
 | Change web UI | `web/templates/index.html`, `static/js/app.js`, `static/css/style.css` |
 | Add configuration | `src/rf_mapper/config.py`, `config.yaml` |
 | Home Assistant integration | `src/rf_mapper/homeassistant.py`, `docs/HOME_ASSISTANT.md` |
+| Multi-scanner sync | `src/rf_mapper/sync.py`, `web/app.py` |
+| Termux/Android support | `src/rf_mapper/termux.py` |
 
 ## Running
 
@@ -51,9 +67,20 @@ python -m rf_mapper scan -l room # CLI scan
 python -m rf_mapper --help       # All commands
 ```
 
+## Deployment
+
+See [INVENTORY.md](INVENTORY.md) for multi-node deployment details.
+
+```bash
+# Update and restart all nodes
+cd ~/git/rf-mapper && source venv/bin/activate && git pull && python -m rf_mapper restart
+ssh grokbox "cd ~/git/rf-mapper && source venv/bin/activate && git pull && python -m rf_mapper restart"
+ssh jellystar "cd ~/git/rf-mapper && source venv/bin/activate && git pull && python -m rf_mapper restart"
+```
+
 ## Tech Stack
 
-- Python 3.10+, Flask, PyYAML, requests
+- Python 3.10+, Flask, PyYAML, requests, bleak
 - Leaflet.js (2D maps), MapLibre GL JS (3D maps)
 - Linux tools: `iw`, bleak (BLE via D-Bus)
 - SQLite for device history