feat: 完成全部11项优化需求 + 模板必填项标注 + 归档重算个税

- 高优先级: 花名册导入模板必填项标注、性别自动识别、导入结果反馈、证据链Excel导出、身份证搜索修复、试用期区分与转正提醒、薪税批次流程优化
- 中优先级: 专项附加扣除批量导入、文本模板库完善(Word下载/复制/使用说明)、用工体检评分标准说明、考勤页面导入入口
- 所有导入模板表头标注必填项(*后缀)并含示例行
- 导入逻辑统一改用getField兼容*后缀列名
- 批次归档时强制重算所有条目个税和社保,解决多未归档批次并存时累计计算不准问题
- 更新需求梳理文档

frontend/src/pages/roster/EvidenceChain.tsx

@@ -2,6 +2,7 @@ import { useState, useRef } from "react"
 import { toast } from "sonner"
 import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query"
 import api from "../../lib/api"
+import { useAuthStore } from "../../store/authStore"
 import Card from "../../components/ui/Card"
 import Button from "../../components/ui/Button"
 import { Input, Label, Select } from "../../components/ui/Input"
@@ -48,15 +49,23 @@ export default function EvidenceChain({ employeeId }: { employeeId: string }) {
     '解聘记录': 'bg-gray-100 text-gray-700 border-gray-300',
   }
 
-  const handleExport = () => {
-    const text = generateEvidenceText(data)
-    const blob = new Blob([text], { type: 'text/plain;charset=utf-8' })
-    const url = URL.createObjectURL(blob)
-    const a = document.createElement('a')
-    a.href = url
-    a.download = `仲裁证据链_${data.employee.name}_${new Date().toISOString().slice(0, 10)}.txt`
-    a.click()
-    URL.revokeObjectURL(url)
+  const handleExport = async () => {
+    try {
+      const token = useAuthStore.getState().accessToken
+      const res = await fetch(`/api/v1/roster/${employeeId}/evidence-chain/export`, {
+        headers: token ? { Authorization: `Bearer ${token}` } : {},
+      })
+      if (!res.ok) throw new Error('导出失败')
+      const blob = await res.blob()
+      const url = URL.createObjectURL(blob)
+      const a = document.createElement('a')
+      a.href = url
+      a.download = `仲裁证据链_${data.employee.name}_${new Date().toISOString().slice(0, 10)}.xlsx`
+      a.click()
+      URL.revokeObjectURL(url)
+    } catch {
+      toast.error('导出失败')
+    }
   }
 
   const riskStyle: Record<string, string> = {