expose gpio to docker

docker-compose.yml

@@ -9,6 +9,8 @@ services:
       - .:/app
       # Mount timezone file from host for Still Sands scheduling
       - /etc/timezone:/etc/host-timezone:ro
+      # Mount GPIO memory for hardware access
+      - /dev/gpiomem:/dev/gpiomem
     devices:
       - "/dev/ttyACM0:/dev/ttyACM0"
     privileged: true

requirements.txt

@@ -12,4 +12,5 @@ python-multipart>=0.0.6
 websockets>=11.0.3  # Required for FastAPI WebSocket support
 requests>=2.31.0
 Pillow
-aiohttp
+aiohttp
+RPi.GPIO>=0.7.1; platform_machine == "aarch64" or platform_machine == "armv7l"  # Raspberry Pi GPIO support