Decouple aftersales customers from company management

AGENTS.md

@@ -107,6 +107,10 @@ backend-go/
 - Creating an employee through `/api/employees` creates employee master data and automatically generates one employee serial bound by `employeeId`.
 - `admin` / `technician` creation requires an initial password; `employee` creation must not require one.
 
+### Business Boundaries
+- Company management (`Company`, `/api/companies`) is for authorized agents/company-code verification.
+- Aftersales order `companyName` is customer information stored on the order only; creating or updating an aftersales order must not create or link a `Company` record.
+
 ### Import Organization
 Standard imports followed by third-party imports, then project imports (sorted alphabetically):
 ```go

README.md

@@ -263,6 +263,8 @@ go run github.com/swaggo/swag/cmd/swag@v1.16.6 init -g main.go
 
 ### 企业管理
 
+企业管理用于维护授权代理商/企业码主体，供客户扫码查询代理商授权状态；它不是售后客户名录。
+
 | 方法   | 路径                          | 描述         | 需要认证 | 角色   |
 | ------ | ----------------------------- | ------------ | -------- | ------ |
 | GET    | `/api/companies/stats/overview` | 获取企业统计概览 | 是    | 管理员 |
@@ -319,6 +321,7 @@ go run github.com/swaggo/swag/cmd/swag@v1.16.6 init -g main.go
 - 服务类型枚举：`software`（软件故障）、`hardware`（硬件故障）、`maintenance`（售后维保）
 - 工单号格式: `zjbf-sh-YYMMDDNN`（年份后 2 位 + 月份 2 位 + 日期 2 位 + 当天序号至少 2 位，例：`zjbf-sh-26052801`）
 - 序号按天重置，软删除工单不释放编号（避免回收造成混淆）
+- 工单里的企业名称是售后客户信息，只保存在工单中，不会自动创建或关联企业管理记录
 - 二维码扫码后客户在网页签名（canvas）后点「已授权」确认；选择「未授权」需填写退回原因
 - 签名以 PNG dataURL 形式持久化到工单（`signature` 字段），管理员详情页可查看留底
 - 签名校验：必须为 `data:image/png;base64,` 或 `data:image/jpeg;base64,` 前缀，解码后 200B–500KB

models/models.go

@@ -279,7 +279,6 @@ type AftersalesOrder struct {
 
 	Technician *User `gorm:"foreignKey:TechnicianID" json:"technician,omitempty"`
 	Creator    *User `gorm:"foreignKey:CreatedBy" json:"creator,omitempty"`
-	Company    *Company `gorm:"foreignKey:CompanyName;references:CompanyName" json:"company,omitempty"`
 }
 
 // CreateAftersalesOrderDTO 创建售后工单请求数据

services/aftersales_service.go

@@ -142,19 +142,6 @@ func (s *AftersalesService) generateUniqueSerial() (string, error) {
 
 // Create 创建售后工单
 func (s *AftersalesService) Create(dto models.CreateAftersalesOrderDTO, userId uint) (*models.AftersalesOrder, error) {
-	// 确保公司存在
-	var company models.Company
-	result := database.DB.Where("company_name = ?", dto.CompanyName).First(&company)
-	if result.Error != nil {
-		company = models.Company{
-			CompanyName: dto.CompanyName,
-			IsActive:    true,
-		}
-		if err := database.DB.Create(&company).Error; err != nil {
-			return nil, fmt.Errorf("创建公司失败: %w", err)
-		}
-	}
-
 	serialNumber, err := s.generateUniqueSerial()
 	if err != nil {
 		return nil, err

services/aftersales_service_test.go

@@ -79,7 +79,32 @@ func TestAftersalesService_Create_GeneratesYYMMDDNNSerial(t *testing.T) {
 	assert.Equal(t, user.ID, *order.TechnicianID)
 
 	database.DB.Unscoped().Delete(order)
-	database.DB.Unscoped().Where("company_name = ?", "AftersalesSerialCo").Delete(&models.Company{})
+}
+
+func TestAftersalesService_Create_DoesNotCreateManagedCompany(t *testing.T) {
+	user := seedTechnician(t, "aftersales_no_company_tech")
+	defer database.DB.Unscoped().Delete(&user)
+
+	companyName := "AftersalesCustomerOnlyCo"
+	database.DB.Unscoped().Where("company_name = ?", companyName).Delete(&models.Company{})
+
+	svc := AftersalesService{}
+	order, err := svc.Create(models.CreateAftersalesOrderDTO{
+		CompanyName:      companyName,
+		CompanyAddress:   "客户现场地址",
+		ContactName:      "王五",
+		ContactPhone:     "13800001235",
+		ServiceType:      "software",
+		IssueDescription: "售后客户问题",
+	}, user.ID)
+
+	assert.NoError(t, err)
+	assert.NotNil(t, order)
+	defer database.DB.Unscoped().Delete(order)
+
+	var count int64
+	database.DB.Model(&models.Company{}).Where("company_name = ?", companyName).Count(&count)
+	assert.Equal(t, int64(0), count)
 }
 
 func TestAftersalesService_Create_SerialIncrementsWithinDay(t *testing.T) {
@@ -105,7 +130,6 @@ func TestAftersalesService_Create_SerialIncrementsWithinDay(t *testing.T) {
 
 	database.DB.Unscoped().Delete(first)
 	database.DB.Unscoped().Delete(second)
-	database.DB.Unscoped().Where("company_name = ?", "SeqCo").Delete(&models.Company{})
 }
 
 func TestAftersalesService_SubmitForConfirmation_OwnerOnly(t *testing.T) {
@@ -116,7 +140,6 @@ func TestAftersalesService_SubmitForConfirmation_OwnerOnly(t *testing.T) {
 
 	order := createOrderFor(t, owner, "13800003000")
 	defer database.DB.Unscoped().Delete(order)
-	defer database.DB.Unscoped().Where("company_name = ?", order.CompanyName).Delete(&models.Company{})
 
 	svc := AftersalesService{}
 
@@ -141,7 +164,6 @@ func TestAftersalesService_SubmitForConfirmation_RejectsClosed(t *testing.T) {
 
 	order := createOrderFor(t, owner, "13800004000")
 	defer database.DB.Unscoped().Delete(order)
-	defer database.DB.Unscoped().Where("company_name = ?", order.CompanyName).Delete(&models.Company{})
 
 	svc := AftersalesService{}
 
@@ -163,7 +185,6 @@ func TestAftersalesService_PublicQuery_MasksPhoneAndSetsScannedAt(t *testing.T)
 
 	order := createOrderFor(t, owner, "13800005000")
 	defer database.DB.Unscoped().Delete(order)
-	defer database.DB.Unscoped().Where("company_name = ?", order.CompanyName).Delete(&models.Company{})
 
 	svc := AftersalesService{}
 	view, err := svc.PublicQuery(order.SerialNumber)
@@ -186,7 +207,6 @@ func TestAftersalesService_CustomerConfirm_Authorize(t *testing.T) {
 
 	order := createOrderFor(t, owner, "13800006789")
 	defer database.DB.Unscoped().Delete(order)
-	defer database.DB.Unscoped().Where("company_name = ?", order.CompanyName).Delete(&models.Company{})
 
 	svc := AftersalesService{}
 	_, _ = svc.SubmitForConfirmation(order.SerialNumber, models.SubmitForConfirmationDTO{
@@ -217,7 +237,6 @@ func TestAftersalesService_CustomerConfirm_AuthorizeRejectsEmptySignature(t *tes
 
 	order := createOrderFor(t, owner, "13800007777")
 	defer database.DB.Unscoped().Delete(order)
-	defer database.DB.Unscoped().Where("company_name = ?", order.CompanyName).Delete(&models.Company{})
 
 	svc := AftersalesService{}
 	_, _ = svc.SubmitForConfirmation(order.SerialNumber, models.SubmitForConfirmationDTO{
@@ -239,7 +258,6 @@ func TestAftersalesService_CustomerConfirm_AuthorizeRejectsInvalidSignature(t *t
 
 	order := createOrderFor(t, owner, "13800007788")
 	defer database.DB.Unscoped().Delete(order)
-	defer database.DB.Unscoped().Where("company_name = ?", order.CompanyName).Delete(&models.Company{})
 
 	svc := AftersalesService{}
 	_, _ = svc.SubmitForConfirmation(order.SerialNumber, models.SubmitForConfirmationDTO{
@@ -271,7 +289,6 @@ func TestAftersalesService_CustomerConfirm_RejectRequiresReason(t *testing.T) {
 
 	order := createOrderFor(t, owner, "13800008877")
 	defer database.DB.Unscoped().Delete(order)
-	defer database.DB.Unscoped().Where("company_name = ?", order.CompanyName).Delete(&models.Company{})
 
 	svc := AftersalesService{}
 	_, _ = svc.SubmitForConfirmation(order.SerialNumber, models.SubmitForConfirmationDTO{
@@ -293,7 +310,6 @@ func TestAftersalesService_CustomerConfirm_RejectIncrementsCount(t *testing.T) {
 
 	order := createOrderFor(t, owner, "13800008888")
 	defer database.DB.Unscoped().Delete(order)
-	defer database.DB.Unscoped().Where("company_name = ?", order.CompanyName).Delete(&models.Company{})
 
 	svc := AftersalesService{}
 	_, _ = svc.SubmitForConfirmation(order.SerialNumber, models.SubmitForConfirmationDTO{
@@ -328,7 +344,6 @@ func TestAftersalesService_CustomerConfirm_RejectsWrongStatus(t *testing.T) {
 
 	order := createOrderFor(t, owner, "13800009999")
 	defer database.DB.Unscoped().Delete(order)
-	defer database.DB.Unscoped().Where("company_name = ?", order.CompanyName).Delete(&models.Company{})
 
 	svc := AftersalesService{}
 	// 未提交客户确认，工单仍是 created，应该拒绝
@@ -345,7 +360,6 @@ func TestAftersalesService_ForceClose_AdminOverride(t *testing.T) {
 
 	order := createOrderFor(t, owner, "13800001111")
 	defer database.DB.Unscoped().Delete(order)
-	defer database.DB.Unscoped().Where("company_name = ?", order.CompanyName).Delete(&models.Company{})
 
 	svc := AftersalesService{}
 	updated, err := svc.ForceClose(order.SerialNumber)