🧹 清理重复配置文件

- 删除根目录中重复的 NestJS 配置文件
- 删除 tsconfig.json, tsconfig.build.json, eslint.config.mjs, .prettierrc
- 保留 wwjcloud-nest/ 目录中的完整配置
- 避免配置冲突，确保项目结构清晰

admin-vben/docs/src/en/veben/guide/in-depth/ui-framework.md

@@ -0,0 +1,17 @@
+# UI Framework Switching
+
+`Vue Admin` supports your freedom to choose the UI framework. The default UI framework for the demo site is `Ant Design Vue`, consistent with the older version. The framework also has built-in versions for `Element Plus` and `Naive UI`, allowing you to choose according to your preference.
+
+## Adding a New UI Framework
+
+If you want to use a different UI framework, you only need to follow these steps:
+
+1. Create a new folder inside `apps`, for example, `apps/web-xxx`.
+2. Change the `name` field in `apps/web-xxx/package.json` to `web-xxx`.
+3. Remove dependencies and code from other UI frameworks and replace them with your chosen UI framework's logic, which requires minimal changes.
+4. Adjust the language files within `locales`.
+5. Adjust the components in `app.vue`.
+6. Adapt the theme of the UI framework to match `Vben Admin`.
+7. Adjust the application name in `.env`.
+8. Add a `dev:xxx` script in the root directory of the repository.
+9. Run `pnpm install` to install dependencies.