fix: 修复当天入职员工被误判为预入职的时区问题；数据导出独立为设置Tab

backend/src/routes/roster.routes.ts

@@ -28,8 +28,13 @@ router.get('/', authMiddleware, async (req: AuthRequest, res, next) => {
     const contractStatus = req.query.contractStatus as string  // active | expiring | expired | unsigned | etc.
     const skip = (page - 1) * pageSize
 
+    // 使用本地日期午夜，避免时区问题导致当天入职被误判为预入职
     const today = new Date()
     today.setHours(0, 0, 0, 0)
+    // hireDate 可能以 UTC 午夜存储（如 new Date('2026-07-24')），在 UTC+8 下为 08:00
+    // 将 today 前移一天作为比较基准，确保当天入职的员工不被误判为预入职
+    const todayEnd = new Date(today)
+    todayEnd.setDate(todayEnd.getDate() + 1)
 
     // 先查询满足 orgId 和搜索条件的员工
     const whereBase: any = { orgId: req.user!.orgId }
@@ -45,10 +50,10 @@ router.get('/', authMiddleware, async (req: AuthRequest, res, next) => {
       whereBase.status = 'RESIGNED'
     } else if (status === 'PRE_HIRE') {
       whereBase.status = 'ACTIVE'
-      whereBase.hireDate = { gt: today }
+      whereBase.hireDate = { gt: todayEnd }
     } else if (status === 'ACTIVE') {
       whereBase.status = 'ACTIVE'
-      whereBase.hireDate = { lte: today }
+      whereBase.hireDate = { lte: todayEnd }
     }
 
     // unsigned 合同状态可以在 DB 层过滤
@@ -101,7 +106,7 @@ router.get('/', authMiddleware, async (req: AuthRequest, res, next) => {
             hireDate: e.hireDate,
           })
       const isResigned = e.terminations.some((t) => t.terminationDate <= today)
-      const isPreHire = !isResigned && e.hireDate > today
+      const isPreHire = !isResigned && e.hireDate > todayEnd
       const dynamicStatus = isResigned ? 'RESIGNED' : (isPreHire ? 'PRE_HIRE' : 'ACTIVE')
       return {
         id: e.id,