refactor(ulthon-admin): 重写入口文件并更新模板引用

将 ulthon-admin.js 简化为入口文件（8行），仅负责组装 admin 对象并清理临时变量。更新 _require.html 按依赖顺序加载 6 个拆分文件。

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

extend/base/admin/view/common/_require.html

@@ -46,6 +46,11 @@
 <script src="__STATIC__/plugs/jq-module/city-picker/js/city-picker.min.js?t={:get_site_version_key()}"></script>
 <script src="__STATIC__/plugs/clipboard.js/clipboard.min.js?t={:get_site_version_key()}"></script>
 <script src="__STATIC__/plugs/ulthon-admin/table.js?t={:get_site_version_key()}"></script>
+<script src="__STATIC__/plugs/ulthon-admin/admin-core.js?t={:get_site_version_key()}"></script>
+<script src="__STATIC__/plugs/ulthon-admin/admin-utils.js?t={:get_site_version_key()}"></script>
+<script src="__STATIC__/plugs/ulthon-admin/admin-table.js?t={:get_site_version_key()}"></script>
+<script src="__STATIC__/plugs/ulthon-admin/admin-api.js?t={:get_site_version_key()}"></script>
+<script src="__STATIC__/plugs/ulthon-admin/admin-listen.js?t={:get_site_version_key()}"></script>
 <script src="__STATIC__/plugs/ulthon-admin/ulthon-admin.js?t={:get_site_version_key()}"></script>
 
 {:event_view_content('AdminLayoutRequireAfter')}