fix: 优化文档16项问题修复

- 问题1/3: 绩效考核/培训记录员工姓名可点击跳转员工详情页
- 问题2: 离职证明模板支持自定义+员工端下载
- 问题4(P0): 修复工资填写后数据归零问题
- 问题5: 社保添加员工参保信息列表
- 问题6(P0): 商业保险支持为员工参保
- 问题7(P0): 员工福利支持为员工添加福利
- 问题8: 规章制度支持导入Word文档
- 问题9: 文本模板下载Word增加HTML格式
- 问题10: 模板下载变量替换修复(排除token参数)
- 问题11(P0): 电子签署发起时员工下拉框有选项
- 问题12: 新增绩效记录添加考评人选项
- 问题13: 违纪记录添加处罚执行细节
- 问题14: 特殊员工列表添加查看详情按钮和姓名链接
- 问题15: 员工福利汇总正确显示参保人员
- 问题16(P0): 证据链验证修复(递归排序key+自动修复历史哈希)

backend/src/routes/social.routes.ts

@@ -1511,4 +1511,71 @@ router.post('/ai-suggest', async (req: AuthRequest, res: Response, next: NextFun
   }
 })
 
+// ========== 员工参保信息列表 ==========
+router.get('/employee-enrollment', async (req: AuthRequest, res: Response, next: NextFunction) => {
+  try {
+    const orgId = req.user!.orgId
+    const keyword = (req.query.keyword as string) || ''
+
+    // 查询所有在职员工
+    const employees = await prisma.employee.findMany({
+      where: {
+        orgId,
+        status: 'ACTIVE',
+        ...(keyword ? { name: { contains: keyword, mode: 'insensitive' } } : {}),
+      },
+      select: {
+        id: true,
+        name: true,
+        department: true,
+        position: true,
+        socialInsBase: true,
+        housingFundBase: true,
+        city: true,
+      },
+      orderBy: { department: 'asc' },
+    })
+
+    const empIds = employees.map(e => e.id)
+
+    // 查询当前有效的社保记录（endMonth 为 null）
+    const socialRecords = await prisma.employeeSocialInsRecord.findMany({
+      where: { orgId, employeeId: { in: empIds }, endMonth: null },
+      select: { employeeId: true, city: true, base: true, startMonth: true, changeType: true },
+    })
+
+    // 查询当前有效的公积金记录
+    const housingRecords = await prisma.employeeHousingFundRecord.findMany({
+      where: { orgId, employeeId: { in: empIds }, endMonth: null },
+      select: { employeeId: true, city: true, base: true, startMonth: true, changeType: true },
+    })
+
+    const socialMap = new Map(socialRecords.map(r => [r.employeeId, r]))
+    const housingMap = new Map(housingRecords.map(r => [r.employeeId, r]))
+
+    const list = employees.map(emp => {
+      const social = socialMap.get(emp.id)
+      const housing = housingMap.get(emp.id)
+      return {
+        id: emp.id,
+        name: emp.name,
+        department: emp.department,
+        position: emp.position,
+        socialInsBase: social?.base ?? emp.socialInsBase ?? 0,
+        socialInsCity: social?.city ?? emp.city ?? '',
+        socialInsStart: social?.startMonth ?? '',
+        socialInsStatus: social ? 'INSURED' : 'UNINSURED',
+        housingFundBase: housing?.base ?? emp.housingFundBase ?? 0,
+        housingFundCity: housing?.city ?? emp.city ?? '',
+        housingFundStart: housing?.startMonth ?? '',
+        housingFundStatus: housing ? 'INSURED' : 'UNINSURED',
+      }
+    })
+
+    res.json({ success: true, data: list })
+  } catch (err) {
+    next(err)
+  }
+})
+
 export default router