优化报表页面，移除统计页面

admin-frontend/src/layouts/AdminLayout.vue

@@ -5,7 +5,6 @@ import { ElMessageBox } from 'element-plus'
 import {
   Bell,
   ChatLineSquare,
-  DataAnalysis,
   Document,
   List,
   Message,
@@ -106,7 +105,6 @@ const menuItems = [
   { path: '/reports', label: '报表', icon: Document },
   { path: '/users', label: '用户', icon: User, badgeKey: 'resets' },
   { path: '/feedbacks', label: '反馈', icon: ChatLineSquare, badgeKey: 'feedbacks' },
-  { path: '/stats', label: '统计', icon: DataAnalysis },
   { path: '/logs', label: '任务日志', icon: List },
   { path: '/announcements', label: '公告', icon: Bell },
   { path: '/email', label: '邮件', icon: Message },