fix: 非列表页面姓名显示处也加上身份证号

后端：
- employee.routes.ts: checkPhone 返回 idCardNumber
- risk.service.ts: 风险项查询加上 idCardNumber 并解密
- dashboard.routes.ts: 风险中心返回 employeeIdCardNumber

前端：
- Termination.tsx: 离职管理所有姓名显示处加上身份证号（员工概况、通知书、PDF导出、下拉选项）
- Roster.tsx: 弹窗标题加上身份证号，signChoice 传递 idCardNumber
- SignMethodChoice.tsx: 签署方式弹窗显示身份证号
- Contracts.tsx: 手机查重提示加上身份证号
- RiskCenter.tsx: 风险卡片员工姓名后显示身份证号

backend/src/routes/employee.routes.ts

@@ -141,12 +141,12 @@ router.get('/check-phone', authMiddleware, async (req: AuthRequest, res, next) =
     // 手机号加密存储，需遍历匹配（量小可接受）
     const employees = await prisma.employee.findMany({
       where: { orgId: req.user!.orgId },
-      select: { id: true, name: true, department: true, status: true, phone: true },
+      select: { id: true, name: true, department: true, status: true, phone: true, idCardNumber: true },
     })
     const matched = employees.find(e => {
       try { return e.phone ? decrypt(e.phone) === phone : false } catch { return false }
     })
-    res.json({ success: true, data: { exists: !!matched, employee: matched ? { id: matched.id, name: matched.name, department: matched.department, status: matched.status } : undefined } })
+    res.json({ success: true, data: { exists: !!matched, employee: matched ? { id: matched.id, name: matched.name, department: matched.department, status: matched.status, idCardNumber: (() => { try { return matched.idCardNumber ? (matched.idCardNumber.includes(':') ? decrypt(matched.idCardNumber) : matched.idCardNumber) : null } catch { return null } })() } : undefined } })
   } catch (err) {
     next(err)
   }