Add arrival notifier for Tesla/TeslaMate

- Monitors state changes (driving → parked/charging)
- Uses geofences when available
- Falls back to reverse geocoding via Nominatim
- Triggers Clawdbot agent to check location-based reminders
- Includes systemd service template
- 30s debounce to prevent duplicate notifications

arrival-notifier.service

@@ -0,0 +1,26 @@
+[Unit]
+Description=Tesla Arrival Notifier for Clawdbot
+After=network.target
+
+[Service]
+Type=simple
+WorkingDirectory=/opt/mqtt-clawdbot-bridge
+ExecStart=/usr/bin/node arrival-notifier.js
+Restart=always
+RestartSec=10
+
+Environment=MQTT_URL=mqtts://mqtt.teslamate.olex.me:8883
+Environment=MQTT_USERNAME=olex
+Environment=MQTT_PASSWORD=wnGrhm6t
+Environment=CLAWDBOT_URL=http://127.0.0.1:18789
+Environment=CLAWDBOT_TOKEN=c92e6b350068e07ff71ab77ae4bd0610da898a2f38d394dd
+Environment=CAR_ID=14
+Environment=LOG_LEVEL=info
+
+NoNewPrivileges=true
+ProtectSystem=strict
+ProtectHome=read-only
+PrivateTmp=true
+
+[Install]
+WantedBy=multi-user.target