feat: M4-05 — reporting admin page with CSV download buttons

- ReportingAdmin page: download user/learning/review CSV with day range selector

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/App.tsx

@@ -43,6 +43,7 @@ const NotificationAdmin = lazy(() => import('./pages/NotificationAdmin'))
 const CacheAdmin = lazy(() => import('./pages/CacheAdmin'))
 const LearningData = lazy(() => import('./pages/LearningData'))
 const BackupAdmin = lazy(() => import('./pages/BackupAdmin'))
+const ReportingAdmin = lazy(() => import('./pages/ReportingAdmin'))
 
 const queryClient = new QueryClient()
 
@@ -180,6 +181,7 @@ function App() {
                   <Route path="reviews" element={<Suspense fallback={<PageLoading />}><ReviewAdmin /></Suspense>} />
                   <Route path="learning-data" element={<Suspense fallback={<PageLoading />}><LearningData /></Suspense>} />
                   <Route path="backup" element={<Suspense fallback={<PageLoading />}><BackupAdmin /></Suspense>} />
+                  <Route path="reporting" element={<Suspense fallback={<PageLoading />}><ReportingAdmin /></Suspense>} />
                   <Route path="notification-admin" element={<Suspense fallback={<PageLoading />}><NotificationAdmin /></Suspense>} />
                   <Route path="*" element={<NotFoundPage />} />
                 </Route>

src/config/menu.tsx

@@ -27,6 +27,7 @@ export const adminMenuItems: AdminMenuItem[] = [
   ]},
   { path: '/imports', name: '文档导入', icon: <ImportOutlined /> },
   { path: '/files', name: '文件与 COS', icon: <FileOutlined /> },
+  { path: '/reporting', name: '报表导出', icon: <FileOutlined />, requiredRole: 'ADMIN' },
   { path: '/audit', name: '审计日志', icon: <SafetyOutlined />, requiredRole: 'ADMIN' },
   { path: '/billing', name: 'API 用量', icon: <DollarOutlined />, requiredRole: 'SUPER_ADMIN' },
   { path: '/git', name: '代码仓库', icon: <CodeOutlined /> },

src/pages/ReportingAdmin.tsx

@@ -0,0 +1,72 @@
+import { Card, Button, Space, Typography, Table, message, Select } from 'antd'
+import { DownloadOutlined } from '@ant-design/icons'
+import { useQuery } from '@tanstack/react-query'
+import { api } from '@/services/http-client'
+import { useState } from 'react'
+
+const { Title } = Typography
+
+function downloadBlob(data: string, filename: string) {
+  const blob = new Blob(['' + data], { type: 'text/csv;charset=utf-8' })
+  const url = URL.createObjectURL(blob)
+  const a = document.createElement('a')
+  a.href = url; a.download = filename
+  a.click(); URL.revokeObjectURL(url)
+}
+
+export default function ReportingAdmin() {
+  const [days, setDays] = useState(30)
+
+  const { data: jobs } = useQuery({
+    queryKey: ['admin', 'export-jobs'],
+    queryFn: () => api.get<any>('/admin-api/reporting/jobs'),
+  })
+
+  const download = async (type: string) => {
+    try {
+      const res = await fetch(`/admin-api/reporting/export/${type}?days=${days}`, {
+        headers: { Authorization: `Bearer ${localStorage.getItem('accessToken') || ''}` },
+      })
+      if (!res.ok) throw new Error('下载失败')
+      const text = await res.text()
+      downloadBlob(text, `${type}-report-${days}d.csv`)
+    } catch {
+      message.error('导出失败')
+    }
+  }
+
+  const jobColumns = [
+    { title: 'ID', dataIndex: 'id', width: 100, ellipsis: true },
+    { title: '类型', dataIndex: 'type', width: 80 },
+    { title: '状态', dataIndex: 'status', width: 80 },
+    { title: '格式', dataIndex: 'format', width: 60 },
+    { title: '文件大小', dataIndex: 'fileSize', width: 90, render: (s: number) => s ? `${(s / 1024).toFixed(1)} KB` : '-' },
+    { title: '创建时间', dataIndex: 'createdAt', width: 120, render: (d: string) => new Date(d).toLocaleString() },
+  ]
+
+  return (
+    <div>
+      <Title level={4}>报表与导出</Title>
+
+      <Card title="数据导出" style={{ marginBottom: 24 }}>
+        <Space>
+          <span>时间范围：</span>
+          <Select value={days} onChange={setDays} style={{ width: 120 }} options={[
+            { label: '近 7 天', value: 7 },
+            { label: '近 30 天', value: 30 },
+            { label: '近 90 天', value: 90 },
+          ]} />
+        </Space>
+        <Space style={{ marginTop: 16 }}>
+          <Button icon={<DownloadOutlined />} onClick={() => download('users')}>用户数据 CSV</Button>
+          <Button icon={<DownloadOutlined />} onClick={() => download('learning')}>学习数据 CSV</Button>
+          <Button icon={<DownloadOutlined />} onClick={() => download('reviews')}>复习数据 CSV</Button>
+        </Space>
+      </Card>
+
+      <Card title="导出任务历史">
+        <Table dataSource={jobs?.items || []} columns={jobColumns} rowKey="id" size="small" pagination={{ total: jobs?.total || 0 }} scroll={{ x: 600 }} />
+      </Card>
+    </div>
+  )
+}