Initial commit: frigate-notify application

AI-powered video alert service that bridges Frigate NVR events to Matrix.
Listens to MQTT, uses Claude Haiku vision to analyze snapshots, and posts
annotated alerts to a Matrix room.

- app/main.py: MQTT subscriber and event orchestration loop
- app/vision.py: Claude Haiku vision analysis wrapper
- app/matrix_client.py: Matrix HTTP client for sending messages/images
- app/requirements.txt: Python dependencies
- Dockerfile: container image build definition
- docker-compose.yml: deployment configuration (host network, NAS mounts)
- .env.example: required environment variable template (copy to .env)

.env.example

@@ -0,0 +1,11 @@
+# Anthropic API key for Claude Vision (Haiku model)
+# Get yours at: https://console.anthropic.com/
+ANTHROPIC_API_KEY=sk-ant-...
+
+# Matrix bot access token
+# Create a dedicated Matrix bot account and generate an access token
+MATRIX_ACCESS_TOKEN=syt_...
+
+# Matrix room ID where video alerts will be posted
+# Format: !roomid:homeserver.example.com
+MATRIX_ROOM_ID=!roomid:homeserver.example.com