添加Excel记账模板生成脚本和下载入口

frontend/src/pages/admin/ExcelImport.tsx

@@ -1,6 +1,6 @@
 import React, { useState, useEffect } from 'react';
 import { Card, Upload, Button, Table, Tag, message, Typography, Space, Alert, Descriptions, Progress, Select, DatePicker } from 'antd';
-import { UploadOutlined, FileExcelOutlined, CheckCircleOutlined, CloseCircleOutlined } from '@ant-design/icons';
+import { UploadOutlined, FileExcelOutlined, CheckCircleOutlined, CloseCircleOutlined, DownloadOutlined } from '@ant-design/icons';
 import * as XLSX from 'xlsx';
 import apiClient from '../../utils/request';
 import dayjs from 'dayjs';
@@ -233,6 +233,10 @@ const ExcelImport: React.FC = () => {
           <Button icon={<FileExcelOutlined />} type="primary">选择 Excel 文件</Button>
         </Upload>
 
+        <a href="/templates/财务记账导入模板.xlsx" download="财务记账导入模板.xlsx" style={{ marginLeft: 12 }}>
+          <Button icon={<DownloadOutlined />}>下载模板文件</Button>
+        </a>
+
         {parsedData.length > 0 && (
           <>
             <div style={{ margin: '16px 0', display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}>