feat: Add dynamic host IP detection for Docker Compose and Supabase config

- Add docker-compose.sh wrapper script that auto-detects host IP
- Update docker-compose.yml to use environment variable substitution
- Update Supabase config.toml files to use HOST_SITE_URL and SUPABASE_API_URL env vars
- Add scripts/get-host-ip.sh for IP detection
- Add scripts/set-host-env.sh for environment setup
- Add scripts/supabase-with-env.sh wrapper for Supabase CLI
- Add documentation for Docker Compose environment setup
- Update README.md with new usage instructions
- Replace hardcoded URLs with dynamic environment variables

docker-compose.yml

@@ -376,7 +376,8 @@ services:
     environment:
       - CHOKIDAR_USEPOLLING=true
       - TZ=America/New_York
-      - VITE_SUPABASE_URL=http://localhost:54321
+      # Use environment variable with fallback to localhost
+      - VITE_SUPABASE_URL=${VITE_SUPABASE_URL:-http://localhost:54321}
     command: >
       sh -lc "
         npm install;
@@ -403,8 +404,9 @@ services:
     environment:
       - CHOKIDAR_USEPOLLING=true
       - TZ=America/New_York
-      - VITE_MEDIA_API_URL=http://exp-dash:8090
-      - VITE_VISION_API_URL=http://exp-dash:8000
+      # Use environment variables with fallback to localhost
+      - VITE_MEDIA_API_URL=${VITE_MEDIA_API_URL:-http://localhost:8090}
+      - VITE_VISION_API_URL=${VITE_VISION_API_URL:-http://localhost:8000}
     volumes:
       - ./video-remote:/app
     command: >
@@ -426,7 +428,8 @@ services:
     environment:
       - CHOKIDAR_USEPOLLING=true
       - TZ=America/New_York
-      - VITE_VISION_API_URL=http://exp-dash:8000
+      # Use environment variable with fallback to localhost
+      - VITE_VISION_API_URL=${VITE_VISION_API_URL:-http://localhost:8000}
     volumes:
       - ./vision-system-remote:/app
     command: >