feat: integrate room framework and isolated subgame bundles

Complete room UI and protocol integration, move game definitions and resources behind bundle entries, publish authoritative version XML, and document single-game builds. Include all current resource changes and experiment artifacts.

cocoscreator_projects/YouleNexus/settings/v2/packages/builder.json

@@ -1,3 +1,18 @@
 {
-  "__version__": "1.3.9"
+  "__version__": "1.3.9",
+  "splash-setting": {
+    "logo": {
+      "type": "default"
+    },
+    "background": {
+      "type": "color",
+      "color": {
+        "x": 0,
+        "y": 0,
+        "z": 0,
+        "w": 1
+      }
+    },
+    "totalTime": 500
+  }
 }

cocoscreator_projects/YouleNexus/settings/v2/packages/information.json

@@ -6,7 +6,7 @@
       "label": "customSplash",
       "enable": true,
       "customSplash": {
-        "complete": false,
+        "complete": true,
         "form": "https://creator-api.cocos.com/api/form/show?sid=1316b2c5c5aea2b1143818ff1b28cd92"
       }
     },