Add employee serial QR query support

services/employees_service.go

@@ -147,7 +147,7 @@ func (s *EmployeeSerialsService) generateWithDB(
 // Query 查询员工序列号信息
 func (s *EmployeeSerialsService) Query(serialNumber string) (*models.EmployeeSerial, error) {
 	var serial models.EmployeeSerial
-	result := database.DB.Preload("User").Where("serial_number = ?", strings.ToUpper(serialNumber)).First(&serial)
+	result := database.DB.Preload("User").Preload("Employee").Where("serial_number = ?", strings.ToUpper(serialNumber)).First(&serial)
 	if result.Error != nil {
 		return nil, fmt.Errorf("查询员工序列号失败: %w", errors.New("序列号不存在"))
 	}
@@ -161,7 +161,7 @@ func (s *EmployeeSerialsService) FindAll(page int, limit int, search string) ([]
 	var total int64
 
 	offset := (page - 1) * limit
-	db := database.DB.Preload("User")
+	db := database.DB.Preload("User").Preload("Employee")
 
 	// 搜索条件
 	if search != "" {