fix: avoid company writes for employee serials

services/users_service_test.go

@@ -33,6 +33,34 @@ func TestUsersService_Create_Success(t *testing.T) {
 	database.DB.Unscoped().Where("employee_name = ?", "新技术员").Delete(&models.EmployeeSerial{})
 }
 
+func TestUsersService_Create_DoesNotTouchCompanyTable(t *testing.T) {
+	database.DB.Unscoped().Where("company_name = ?", "内部员工").Delete(&models.Company{})
+	company := models.Company{CompanyName: "内部员工", IsActive: true}
+	assert.NoError(t, database.DB.Create(&company).Error)
+	assert.NoError(t, database.DB.Delete(&company).Error)
+
+	svc := UsersService{}
+	dto, err := svc.Create(models.CreateUserDTO{
+		Password:   "password123",
+		Name:       "软删公司员工",
+		Phone:      "13800000008",
+		EmployeeNo: "users_create_restore_company",
+		Position:   "硬件工程师",
+		Role:       "hardware_engineer",
+	})
+	assert.NoError(t, err)
+	assert.NotNil(t, dto)
+	assert.Len(t, dto.EmployeeSerials, 1)
+
+	var count int64
+	database.DB.Model(&models.Company{}).Where("company_name = ?", "内部员工").Count(&count)
+	assert.Equal(t, int64(0), count)
+
+	database.DB.Unscoped().Where("username = ?", "users_create_restore_company").Delete(&models.User{})
+	database.DB.Unscoped().Where("employee_name = ?", "软删公司员工").Delete(&models.EmployeeSerial{})
+	database.DB.Unscoped().Where("company_name = ?", "内部员工").Delete(&models.Company{})
+}
+
 func TestUsersService_Create_BlocksEmployeeRole(t *testing.T) {
 	svc := UsersService{}
 	_, err := svc.Create(models.CreateUserDTO{