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/extensions/youle-version-manifest/hooks.js

@@ -0,0 +1,21 @@
+'use strict';
+
+const {createSnapshot, publishSnapshot} = require('./core');
+let snapshot;
+
+exports.throwError = true;
+exports.onBeforeBuild = async function(options) {
+  snapshot = undefined;
+  const scenePath = await Editor.Message.request('asset-db', 'query-path', options.startScene);
+  snapshot = createSnapshot({projectPath: Editor.Project.path, scenePath, startScene: options.startScene});
+};
+exports.onAfterBuild = async function(options, result) {
+  try {
+    const destination = publishSnapshot(snapshot, options, result);
+    console.log(`[youle-version-manifest] ${snapshot.gameKey}: ${destination}`);
+  } finally {
+    snapshot = undefined;
+  }
+};
+exports.onError = function() {snapshot = undefined;};
+exports.unload = function() {snapshot = undefined;};