✨ feat: 完整应用重构 - 优化界面架构与用户体验

主要变更：
- 重构应用界面：优化首页、登录、认证流程
- 新增用户档案模块：包含完整的档案管理组件
- 优化路由结构：重新组织页面布局和导航
- 改进API集成：新增活动、内容分类等API模块
- 删除冗余组件：清理不必要的文件和依赖

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

lib/api/categories-with-children.ts

@@ -0,0 +1,8 @@
+import { CategoriesWithChildrenResponse } from '../types/template';
+import { apiClient } from './client';
+
+export async function categoriesWithChildren(): Promise<CategoriesWithChildrenResponse> {
+    return apiClient<CategoriesWithChildrenResponse>('/api/categories-with-children', {
+        method: 'GET',
+    });
+}