architecture de contenu + theming in parrallele

composer.json

@@ -16,9 +16,11 @@
     ],
     "require": {
         "composer/installers": "^2.0",
+        "drupal/cer": "^5.0@beta",
         "drupal/core-composer-scaffold": "^10.4",
         "drupal/core-project-message": "^10.4",
         "drupal/core-recommended": "^10.4",
+        "drupal/upgrade_status": "^4.3",
         "wikimedia/composer-merge-plugin": "^2.1"
     },
     "conflict": {