Add Sites Renderer service to Docker Compose and implement public endpoint for site definitions

- Introduced `igny8_sites` service in `docker-compose.app.yml` for serving deployed public sites.
- Updated `SitesRendererAdapter` to construct deployment URLs dynamically based on environment variables.
- Added `SiteDefinitionView` to provide a public API endpoint for retrieving deployed site definitions.
- Enhanced `loadSiteDefinition` function to prioritize API calls for site definitions over filesystem access.
- Updated frontend to utilize the new API endpoint for loading site definitions.

docker-compose.app.yml

@@ -101,6 +101,26 @@ services:
       - "com.docker.compose.project=igny8-app"
       - "com.docker.compose.service=igny8_marketing_dev"
 
+  igny8_sites:
+    # Sites Renderer - serves deployed public sites
+    # Build separately: docker build -t igny8-sites-dev:latest -f Dockerfile.dev .
+    # Accessible at http://31.97.144.105:8024 (direct) or via Caddy routing
+    image: igny8-sites-dev:latest
+    container_name: igny8_sites
+    restart: always
+    ports:
+      - "0.0.0.0:8024:5176"  # Sites renderer port (internal: 5176, external: 8024)
+    environment:
+      VITE_API_URL: "https://api.igny8.com/api"
+      SITES_DATA_PATH: "/sites"
+    volumes:
+      - /data/app/igny8/sites:/app:rw
+      - /data/app/sites-data:/sites:ro  # Read-only access to deployed sites
+    networks: [igny8_net]
+    labels:
+      - "com.docker.compose.project=igny8-app"
+      - "com.docker.compose.service=igny8_sites"
+
 
   igny8_celery_worker:
     image: igny8-backend:latest