refactor: 将 DTO 文件从 internal/model 移动到 internal/model/dto 目录

- 移动 17 个 DTO 文件到 internal/model/dto/ 目录
- 更新所有 DTO 文件的 package 声明从 model 改为 dto
- 更新所有引用文件的 import 和类型引用
  - Handler 层：admin 和 h5 所有处理器
  - Service 层：所有业务服务
  - Routes 层：所有路由定义
  - Tests 层：单元测试和集成测试
- 清理未使用的 import 语句
- 验证：项目构建成功，测试编译通过，LSP 无错误

tests/unit/customer_account_service_test.go

@@ -8,6 +8,7 @@ import (
 	"github.com/stretchr/testify/require"
 
 	"github.com/break/junhong_cmp_fiber/internal/model"
+	"github.com/break/junhong_cmp_fiber/internal/model/dto"
 	"github.com/break/junhong_cmp_fiber/internal/service/customer_account"
 	"github.com/break/junhong_cmp_fiber/internal/store/postgres"
 	"github.com/break/junhong_cmp_fiber/pkg/constants"
@@ -34,7 +35,7 @@ func TestCustomerAccountService_List(t *testing.T) {
 	t.Run("查询账号列表-空结果", func(t *testing.T) {
 		ctx := createCustomerAccountTestContext(1)
 
-		req := &model.CustomerAccountListReq{
+		req := &dto.CustomerAccountListReq{
 			Page:     1,
 			PageSize: 20,
 		}
@@ -61,7 +62,7 @@ func TestCustomerAccountService_List(t *testing.T) {
 		err := db.Create(shop).Error
 		require.NoError(t, err)
 
-		createReq := &model.CreateCustomerAccountReq{
+		createReq := &dto.CreateCustomerAccountReq{
 			Username: "测试账号用户",
 			Phone:    "13900000001",
 			Password: "Test123456",
@@ -70,7 +71,7 @@ func TestCustomerAccountService_List(t *testing.T) {
 		_, err = service.Create(ctx, createReq)
 		require.NoError(t, err)
 
-		req := &model.CustomerAccountListReq{
+		req := &dto.CustomerAccountListReq{
 			Page:     1,
 			PageSize: 20,
 			Username: "测试账号",
@@ -98,7 +99,7 @@ func TestCustomerAccountService_List(t *testing.T) {
 		err := db.Create(shop).Error
 		require.NoError(t, err)
 
-		createReq := &model.CreateCustomerAccountReq{
+		createReq := &dto.CreateCustomerAccountReq{
 			Username: "店铺筛选账号",
 			Phone:    "13900000002",
 			Password: "Test123456",
@@ -107,7 +108,7 @@ func TestCustomerAccountService_List(t *testing.T) {
 		_, err = service.Create(ctx, createReq)
 		require.NoError(t, err)
 
-		req := &model.CustomerAccountListReq{
+		req := &dto.CustomerAccountListReq{
 			Page:     1,
 			PageSize: 20,
 			ShopID:   &shop.ID,
@@ -146,7 +147,7 @@ func TestCustomerAccountService_Create(t *testing.T) {
 		err := db.Create(shop).Error
 		require.NoError(t, err)
 
-		req := &model.CreateCustomerAccountReq{
+		req := &dto.CreateCustomerAccountReq{
 			Username: "新代理账号",
 			Phone:    "13900000010",
 			Password: "Test123456",
@@ -178,7 +179,7 @@ func TestCustomerAccountService_Create(t *testing.T) {
 		err := db.Create(shop).Error
 		require.NoError(t, err)
 
-		req1 := &model.CreateCustomerAccountReq{
+		req1 := &dto.CreateCustomerAccountReq{
 			Username: "账号一",
 			Phone:    "13900000011",
 			Password: "Test123456",
@@ -187,7 +188,7 @@ func TestCustomerAccountService_Create(t *testing.T) {
 		_, err = service.Create(ctx, req1)
 		require.NoError(t, err)
 
-		req2 := &model.CreateCustomerAccountReq{
+		req2 := &dto.CreateCustomerAccountReq{
 			Username: "账号二",
 			Phone:    "13900000011",
 			Password: "Test123456",
@@ -200,7 +201,7 @@ func TestCustomerAccountService_Create(t *testing.T) {
 	t.Run("新增账号-店铺不存在应失败", func(t *testing.T) {
 		ctx := createCustomerAccountTestContext(1)
 
-		req := &model.CreateCustomerAccountReq{
+		req := &dto.CreateCustomerAccountReq{
 			Username: "无效店铺账号",
 			Phone:    "13900000012",
 			Password: "Test123456",
@@ -214,7 +215,7 @@ func TestCustomerAccountService_Create(t *testing.T) {
 	t.Run("新增账号-未授权用户应失败", func(t *testing.T) {
 		ctx := context.Background()
 
-		req := &model.CreateCustomerAccountReq{
+		req := &dto.CreateCustomerAccountReq{
 			Username: "未授权账号",
 			Phone:    "13900000013",
 			Password: "Test123456",
@@ -252,7 +253,7 @@ func TestCustomerAccountService_Update(t *testing.T) {
 		err := db.Create(shop).Error
 		require.NoError(t, err)
 
-		createReq := &model.CreateCustomerAccountReq{
+		createReq := &dto.CreateCustomerAccountReq{
 			Username: "待编辑账号",
 			Phone:    "13900000020",
 			Password: "Test123456",
@@ -262,7 +263,7 @@ func TestCustomerAccountService_Update(t *testing.T) {
 		require.NoError(t, err)
 
 		newName := "编辑后账号"
-		updateReq := &model.UpdateCustomerAccountReq{
+		updateReq := &dto.UpdateCustomerAccountRequest{
 			Username: &newName,
 		}
 
@@ -275,7 +276,7 @@ func TestCustomerAccountService_Update(t *testing.T) {
 		ctx := createCustomerAccountTestContext(1)
 
 		newName := "不存在账号"
-		updateReq := &model.UpdateCustomerAccountReq{
+		updateReq := &dto.UpdateCustomerAccountRequest{
 			Username: &newName,
 		}
 
@@ -310,7 +311,7 @@ func TestCustomerAccountService_UpdatePassword(t *testing.T) {
 		err := db.Create(shop).Error
 		require.NoError(t, err)
 
-		createReq := &model.CreateCustomerAccountReq{
+		createReq := &dto.CreateCustomerAccountReq{
 			Username: "密码测试账号",
 			Phone:    "13900000030",
 			Password: "OldPass123",
@@ -363,7 +364,7 @@ func TestCustomerAccountService_UpdateStatus(t *testing.T) {
 		err := db.Create(shop).Error
 		require.NoError(t, err)
 
-		createReq := &model.CreateCustomerAccountReq{
+		createReq := &dto.CreateCustomerAccountReq{
 			Username: "状态测试账号",
 			Phone:    "13900000040",
 			Password: "Test123456",
@@ -397,7 +398,7 @@ func TestCustomerAccountService_UpdateStatus(t *testing.T) {
 		err := db.Create(shop).Error
 		require.NoError(t, err)
 
-		createReq := &model.CreateCustomerAccountReq{
+		createReq := &dto.CreateCustomerAccountReq{
 			Username: "启用测试账号",
 			Phone:    "13900000041",
 			Password: "Test123456",