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/commission_withdrawal_service_test.go

@@ -7,7 +7,7 @@ import (
 	"github.com/stretchr/testify/assert"
 	"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/commission_withdrawal"
 	"github.com/break/junhong_cmp_fiber/internal/store/postgres"
 	"github.com/break/junhong_cmp_fiber/pkg/constants"
@@ -36,7 +36,7 @@ func TestCommissionWithdrawalService_ListWithdrawalRequests(t *testing.T) {
 	t.Run("查询提现申请列表-空结果", func(t *testing.T) {
 		ctx := createWithdrawalTestContext(1)
 
-		req := &model.WithdrawalRequestListReq{
+		req := &dto.WithdrawalRequestListReq{
 			Page:     1,
 			PageSize: 20,
 		}
@@ -51,7 +51,7 @@ func TestCommissionWithdrawalService_ListWithdrawalRequests(t *testing.T) {
 		ctx := createWithdrawalTestContext(1)
 
 		status := 1
-		req := &model.WithdrawalRequestListReq{
+		req := &dto.WithdrawalRequestListReq{
 			Page:     1,
 			PageSize: 20,
 			Status:   &status,
@@ -65,7 +65,7 @@ func TestCommissionWithdrawalService_ListWithdrawalRequests(t *testing.T) {
 	t.Run("按时间范围筛选提现申请", func(t *testing.T) {
 		ctx := createWithdrawalTestContext(1)
 
-		req := &model.WithdrawalRequestListReq{
+		req := &dto.WithdrawalRequestListReq{
 			Page:      1,
 			PageSize:  20,
 			StartTime: "2025-01-01 00:00:00",
@@ -93,7 +93,7 @@ func TestCommissionWithdrawalService_Approve(t *testing.T) {
 	t.Run("审批不存在的提现申请应失败", func(t *testing.T) {
 		ctx := createWithdrawalTestContext(1)
 
-		req := &model.ApproveWithdrawalReq{
+		req := &dto.ApproveWithdrawalReq{
 			PaymentType: "manual",
 		}
 
@@ -117,7 +117,7 @@ func TestCommissionWithdrawalService_Reject(t *testing.T) {
 	t.Run("拒绝不存在的提现申请应失败", func(t *testing.T) {
 		ctx := createWithdrawalTestContext(1)
 
-		req := &model.RejectWithdrawalReq{
+		req := &dto.RejectWithdrawalReq{
 			Remark: "测试拒绝原因",
 		}