feat: 添加前端页面和业务说明书

refactor(server): 重构服务层代码结构
feat(server): 添加基础设施、跨境电商、AI决策等核心服务
docs: 完善前端业务说明书和开发进度文档
style: 格式化代码和文档

dashboard/src/pages/index.tsx

@@ -9,7 +9,9 @@ import {
   AlertOutlined, 
   FileTextOutlined,
   DollarOutlined,
-  BarChartOutlined
+  BarChartOutlined,
+  SettingOutlined,
+  TeamOutlined
 } from '@ant-design/icons';
 import { Link } from 'umi';
 
@@ -67,6 +69,21 @@ const Dashboard: React.FC = () => {
       key: 'ads',
       icon: <BarChartOutlined />,
       label: <Link to="/Ad">广告管理</Link>
+    },
+    {
+      key: 'users',
+      icon: <UserOutlined />,
+      label: <Link to="/User">用户管理</Link>
+    },
+    {
+      key: 'roles',
+      icon: <TeamOutlined />,
+      label: <Link to="/Role">角色管理</Link>
+    },
+    {
+      key: 'system',
+      icon: <SettingOutlined />,
+      label: <Link to="/System">系统管理</Link>
     }
   ];