Refactor Site Builder Integration and Update Docker Configuration

- Merged the site builder functionality into the main app, enhancing the SiteBuilderWizard component with new steps and improved UI.
- Updated the Docker Compose configuration by removing the separate site builder service and integrating its functionality into the igny8_sites service.
- Enhanced Vite configuration to support code-splitting for builder routes, optimizing loading times.
- Updated package dependencies to include new libraries for state management and form handling.

docker-compose.app.yml

@@ -101,33 +101,14 @@ services:
       - "com.docker.compose.project=igny8-app"
       - "com.docker.compose.service=igny8_marketing_dev"
 
-  igny8_site_builder:
-    image: igny8-site-builder-dev:latest
-    container_name: igny8_site_builder
-    restart: always
-    ports:
-      - "0.0.0.0:8025:5175"
-    environment:
-      VITE_API_URL: "https://api.igny8.com/api"
-    volumes:
-      - /data/app/igny8/site-builder:/app:rw
-      - /data/app/igny8/frontend:/frontend:ro
-    depends_on:
-      igny8_backend:
-        condition: service_healthy
-    networks: [igny8_net]
-    labels:
-      - "com.docker.compose.project=igny8-app"
-      - "com.docker.compose.service=igny8_site_builder"
-
   igny8_sites:
-    # Sites renderer for hosting public sites
+    # Sites container: Public site renderer + Site Builder (merged)
     # Build separately: docker build -t igny8-sites-dev:latest -f Dockerfile.dev .
     image: igny8-sites-dev:latest
     container_name: igny8_sites
     restart: always
     ports:
-      - "0.0.0.0:8024:5176"  # Sites renderer dev server port
+      - "0.0.0.0:8024:5176"  # Sites renderer + Builder dev server port
     environment:
       VITE_API_URL: "https://api.igny8.com/api"
       SITES_DATA_PATH: "/sites"