Complete Cocos Creator port with level bundles, themes, and tooling.

Adds level prefabs, theme assets, audio, extensions, and deployment scripts for the Unity WebGL migration.

Co-authored-by: Cursor <cursoragent@cursor.com>

extensions/plugin-import-2x/creator/browser.ts

@@ -0,0 +1,36 @@
+'use strict';
+
+declare const Editor: any;
+
+    /**
+ * 插件定义的方法
+ * Methods defined by extension
+ * 可以在 package.json 里的 contributions 里定义 messages 触发这里的方法
+ * And of course, messages can be defined in the contributions section in package.JSON to trigger the method here
+ */
+exports.methods = {
+    async importCreatorProject() {
+        const result = await Editor.Dialog.select({
+            title: Editor.I18n.t('plugin-import-2x.select_dialog.title'),
+            path: await Editor.Profile.getConfig('plugin-import-2x', 'import-path') || Editor.Project.path,
+            type: 'directory',
+        });
+        if (!result.filePaths || !result.filePaths[0]) {
+            return;
+        }
+        Editor.Profile.setConfig('plugin-import-2x', 'import-path', result.filePaths[0]);
+        Editor.Panel.open('plugin-import-2x.creator');
+    },
+};
+
+/**
+ * 启动的时候执行的初始化方法
+ * Initialization method performed at startup
+ */
+exports.load = function() {};
+
+/**
+ * 插件被关闭的时候执行的卸载方法
+ * Uninstall method performed when the extension is closed
+ */
+exports.unload = function() {};