Add public directory volume mount to docker-compose

Mount public directory to make static files accessible in the container.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

docker-compose.yml

@@ -31,6 +31,7 @@ services:
       - ENCRYPTION_KEY=${ENCRYPTION_KEY}
     volumes:
       - ./data:/app/data
+      - ./public:/app/public  # Mount public directory for static files
       - ./mosquitto/config:/mosquitto/config  # Lokaler Ordner statt Docker Volume
       - /var/run/docker.sock:/var/run/docker.sock  # Für Mosquitto Reload
     depends_on: