feat: 系统优化Phase2 - 面包屑导航/侧边栏间距/制度公示阅读签收/模板变量中文化/通知类型补全

- 面包屑导航组件，集成至TopNav header
- 侧边栏菜单分组间距增大，分组间分隔线
- 制度公示员工阅读签收：PolicyReadRecord模型、portal路由、管理端阅读统计
- 修复Policies.tsx民主程序推进bug（字段名/API路径/参数）
- 用工文本模板变量名英文转中文显示
- 通知类型TYPE_LABELS补全(RISK_ALERT/SOCIAL_INS/OVERTIME_ALERT/PAYSLIP_READY)
- 通知示例数据补充
- h2标题统一为text-sm font-medium
- 新增run.md

backend/src/routes/payroll2.routes.ts

@@ -8,6 +8,7 @@ import {
   calcBatchEntry,
   getPayrollRiskWarnings,
   generatePayslipFromBatches,
+  prePayrollCheck,
 } from '../services/payroll.service'
 
 const router = Router()
@@ -670,4 +671,17 @@ router.get('/batches/:batchId/export', async (req: AuthRequest, res: Response, n
   }
 })
 
+// 算薪前 AI 校验
+router.get('/batches/:batchId/pre-check', async (req: AuthRequest, res: Response, next: NextFunction) => {
+  try {
+    const result = await prePayrollCheck(req.user!.orgId, req.params.batchId)
+    res.json({ success: true, data: result })
+  } catch (err: any) {
+    if (err?.code === 'NOT_FOUND') {
+      return res.status(404).json({ success: false, error: { code: err.code, message: err.message } })
+    }
+    next(err)
+  }
+})
+
 export default router