refactor: 一次性佣金配置从套餐级别提升到系列级别

主要变更:
- 新增 tb_shop_series_allocation 表，存储系列级别的一次性佣金配置
- ShopPackageAllocation 移除 one_time_commission_amount 字段
- PackageSeries 新增 enable_one_time_commission 字段控制是否启用一次性佣金
- 新增 /api/admin/shop-series-allocations CRUD 接口
- 佣金计算逻辑改为从 ShopSeriesAllocation 获取一次性佣金金额
- 删除废弃的 ShopSeriesOneTimeCommissionTier 模型
- OpenAPI Tag '系列分配' 和 '单套餐分配' 合并为 '套餐分配'

迁移脚本:
- 000042: 重构佣金套餐模型
- 000043: 简化佣金分配
- 000044: 一次性佣金分配重构
- 000045: PackageSeries 添加 enable_one_time_commission 字段

测试:
- 新增验收测试 (shop_series_allocation, commission_calculation)
- 新增流程测试 (one_time_commission_chain)
- 删除过时的单元测试（已被验收测试覆盖）

internal/service/package/service_test.go

@@ -25,7 +25,7 @@ func TestPackageService_Create(t *testing.T) {
 	tx := testutils.NewTestTransaction(t)
 	packageStore := postgres.NewPackageStore(tx)
 	packageSeriesStore := postgres.NewPackageSeriesStore(tx)
-	svc := New(packageStore, packageSeriesStore, nil, nil)
+	svc := New(packageStore, packageSeriesStore, nil)
 
 	ctx := middleware.SetUserContext(context.Background(), &middleware.UserContextInfo{
 		UserID:   1,
@@ -38,7 +38,6 @@ func TestPackageService_Create(t *testing.T) {
 			PackageName:    "创建测试套餐",
 			PackageType:    "formal",
 			DurationMonths: 1,
-			Price:          9900,
 		}
 
 		resp, err := svc.Create(ctx, req)
@@ -57,7 +56,6 @@ func TestPackageService_Create(t *testing.T) {
 			PackageName:    "第一个套餐",
 			PackageType:    "formal",
 			DurationMonths: 1,
-			Price:          9900,
 		}
 		_, err := svc.Create(ctx, req1)
 		require.NoError(t, err)
@@ -67,7 +65,6 @@ func TestPackageService_Create(t *testing.T) {
 			PackageName:    "第二个套餐",
 			PackageType:    "formal",
 			DurationMonths: 1,
-			Price:          9900,
 		}
 		_, err = svc.Create(ctx, req2)
 		require.Error(t, err)
@@ -82,7 +79,6 @@ func TestPackageService_Create(t *testing.T) {
 			PackageName:    "系列测试套餐",
 			PackageType:    "formal",
 			DurationMonths: 1,
-			Price:          9900,
 			SeriesID:       func() *uint { id := uint(99999); return &id }(),
 		}
 
@@ -98,7 +94,7 @@ func TestPackageService_UpdateStatus(t *testing.T) {
 	tx := testutils.NewTestTransaction(t)
 	packageStore := postgres.NewPackageStore(tx)
 	packageSeriesStore := postgres.NewPackageSeriesStore(tx)
-	svc := New(packageStore, packageSeriesStore, nil, nil)
+	svc := New(packageStore, packageSeriesStore, nil)
 
 	ctx := middleware.SetUserContext(context.Background(), &middleware.UserContextInfo{
 		UserID:   1,
@@ -110,7 +106,6 @@ func TestPackageService_UpdateStatus(t *testing.T) {
 		PackageName:    "状态测试套餐",
 		PackageType:    "formal",
 		DurationMonths: 1,
-		Price:          9900,
 	}
 	created, err := svc.Create(ctx, req)
 	require.NoError(t, err)
@@ -138,7 +133,6 @@ func TestPackageService_UpdateStatus(t *testing.T) {
 			PackageName:    "启用测试套餐",
 			PackageType:    "formal",
 			DurationMonths: 1,
-			Price:          9900,
 		}
 		created2, err := svc.Create(ctx, req2)
 		require.NoError(t, err)
@@ -168,7 +162,7 @@ func TestPackageService_UpdateShelfStatus(t *testing.T) {
 	tx := testutils.NewTestTransaction(t)
 	packageStore := postgres.NewPackageStore(tx)
 	packageSeriesStore := postgres.NewPackageSeriesStore(tx)
-	svc := New(packageStore, packageSeriesStore, nil, nil)
+	svc := New(packageStore, packageSeriesStore, nil)
 
 	ctx := middleware.SetUserContext(context.Background(), &middleware.UserContextInfo{
 		UserID:   1,
@@ -181,7 +175,6 @@ func TestPackageService_UpdateShelfStatus(t *testing.T) {
 			PackageName:    "上架测试-启用",
 			PackageType:    "formal",
 			DurationMonths: 1,
-			Price:          9900,
 		}
 		created, err := svc.Create(ctx, req)
 		require.NoError(t, err)
@@ -205,7 +198,6 @@ func TestPackageService_UpdateShelfStatus(t *testing.T) {
 			PackageName:    "上架测试-禁用",
 			PackageType:    "formal",
 			DurationMonths: 1,
-			Price:          9900,
 		}
 		created, err := svc.Create(ctx, req)
 		require.NoError(t, err)
@@ -230,7 +222,6 @@ func TestPackageService_UpdateShelfStatus(t *testing.T) {
 			PackageName:    "下架测试",
 			PackageType:    "formal",
 			DurationMonths: 1,
-			Price:          9900,
 		}
 		created, err := svc.Create(ctx, req)
 		require.NoError(t, err)
@@ -255,7 +246,7 @@ func TestPackageService_Get(t *testing.T) {
 	tx := testutils.NewTestTransaction(t)
 	packageStore := postgres.NewPackageStore(tx)
 	packageSeriesStore := postgres.NewPackageSeriesStore(tx)
-	svc := New(packageStore, packageSeriesStore, nil, nil)
+	svc := New(packageStore, packageSeriesStore, nil)
 
 	ctx := middleware.SetUserContext(context.Background(), &middleware.UserContextInfo{
 		UserID:   1,
@@ -267,7 +258,6 @@ func TestPackageService_Get(t *testing.T) {
 		PackageName:    "查询测试套餐",
 		PackageType:    "formal",
 		DurationMonths: 1,
-		Price:          9900,
 	}
 	created, err := svc.Create(ctx, req)
 	require.NoError(t, err)
@@ -293,7 +283,7 @@ func TestPackageService_Update(t *testing.T) {
 	tx := testutils.NewTestTransaction(t)
 	packageStore := postgres.NewPackageStore(tx)
 	packageSeriesStore := postgres.NewPackageSeriesStore(tx)
-	svc := New(packageStore, packageSeriesStore, nil, nil)
+	svc := New(packageStore, packageSeriesStore, nil)
 
 	ctx := middleware.SetUserContext(context.Background(), &middleware.UserContextInfo{
 		UserID:   1,
@@ -305,23 +295,19 @@ func TestPackageService_Update(t *testing.T) {
 		PackageName:    "更新测试套餐",
 		PackageType:    "formal",
 		DurationMonths: 1,
-		Price:          9900,
 	}
 	created, err := svc.Create(ctx, req)
 	require.NoError(t, err)
 
 	t.Run("更新成功", func(t *testing.T) {
 		newName := "更新后的套餐名称"
-		newPrice := int64(19900)
 		updateReq := &dto.UpdatePackageRequest{
 			PackageName: &newName,
-			Price:       &newPrice,
 		}
 
 		resp, err := svc.Update(ctx, created.ID, updateReq)
 		require.NoError(t, err)
 		assert.Equal(t, newName, resp.PackageName)
-		assert.Equal(t, newPrice, resp.Price)
 	})
 
 	t.Run("更新不存在的套餐", func(t *testing.T) {
@@ -342,7 +328,7 @@ func TestPackageService_Delete(t *testing.T) {
 	tx := testutils.NewTestTransaction(t)
 	packageStore := postgres.NewPackageStore(tx)
 	packageSeriesStore := postgres.NewPackageSeriesStore(tx)
-	svc := New(packageStore, packageSeriesStore, nil, nil)
+	svc := New(packageStore, packageSeriesStore, nil)
 
 	ctx := middleware.SetUserContext(context.Background(), &middleware.UserContextInfo{
 		UserID:   1,
@@ -354,7 +340,6 @@ func TestPackageService_Delete(t *testing.T) {
 		PackageName:    "删除测试套餐",
 		PackageType:    "formal",
 		DurationMonths: 1,
-		Price:          9900,
 	}
 	created, err := svc.Create(ctx, req)
 	require.NoError(t, err)
@@ -377,7 +362,7 @@ func TestPackageService_List(t *testing.T) {
 	tx := testutils.NewTestTransaction(t)
 	packageStore := postgres.NewPackageStore(tx)
 	packageSeriesStore := postgres.NewPackageSeriesStore(tx)
-	svc := New(packageStore, packageSeriesStore, nil, nil)
+	svc := New(packageStore, packageSeriesStore, nil)
 
 	ctx := middleware.SetUserContext(context.Background(), &middleware.UserContextInfo{
 		UserID:   1,
@@ -390,21 +375,18 @@ func TestPackageService_List(t *testing.T) {
 			PackageName:    "列表测试套餐1",
 			PackageType:    "formal",
 			DurationMonths: 1,
-			Price:          9900,
 		},
 		{
 			PackageCode:    generateUniquePackageCode("PKG_LIST_002"),
 			PackageName:    "列表测试套餐2",
 			PackageType:    "addon",
 			DurationMonths: 1,
-			Price:          4900,
 		},
 		{
 			PackageCode:    generateUniquePackageCode("PKG_LIST_003"),
 			PackageName:    "列表测试套餐3",
 			PackageType:    "formal",
 			DurationMonths: 12,
-			Price:          99900,
 		},
 	}
 
@@ -456,11 +438,118 @@ func TestPackageService_List(t *testing.T) {
 	})
 }
 
+func TestPackageService_VirtualDataValidation(t *testing.T) {
+	tx := testutils.NewTestTransaction(t)
+	packageStore := postgres.NewPackageStore(tx)
+	packageSeriesStore := postgres.NewPackageSeriesStore(tx)
+	svc := New(packageStore, packageSeriesStore, nil)
+
+	ctx := middleware.SetUserContext(context.Background(), &middleware.UserContextInfo{
+		UserID:   1,
+		UserType: constants.UserTypePlatform,
+	})
+
+	t.Run("启用虚流量时虚流量必须大于0", func(t *testing.T) {
+		req := &dto.CreatePackageRequest{
+			PackageCode:       generateUniquePackageCode("PKG_VDATA_1"),
+			PackageName:       "虚流量测试-零值",
+			PackageType:       "formal",
+			DurationMonths:    1,
+			EnableVirtualData: true,
+			RealDataMB:        func() *int64 { v := int64(1000); return &v }(),
+			VirtualDataMB:     func() *int64 { v := int64(0); return &v }(),
+		}
+
+		_, err := svc.Create(ctx, req)
+		require.Error(t, err)
+		appErr, ok := err.(*errors.AppError)
+		require.True(t, ok)
+		assert.Equal(t, errors.CodeInvalidParam, appErr.Code)
+		assert.Contains(t, appErr.Message, "虚流量额度必须大于0")
+	})
+
+	t.Run("启用虚流量时虚流量不能超过真流量", func(t *testing.T) {
+		req := &dto.CreatePackageRequest{
+			PackageCode:       generateUniquePackageCode("PKG_VDATA_2"),
+			PackageName:       "虚流量测试-超过",
+			PackageType:       "formal",
+			DurationMonths:    1,
+			EnableVirtualData: true,
+			RealDataMB:        func() *int64 { v := int64(1000); return &v }(),
+			VirtualDataMB:     func() *int64 { v := int64(2000); return &v }(),
+		}
+
+		_, err := svc.Create(ctx, req)
+		require.Error(t, err)
+		appErr, ok := err.(*errors.AppError)
+		require.True(t, ok)
+		assert.Equal(t, errors.CodeInvalidParam, appErr.Code)
+		assert.Contains(t, appErr.Message, "虚流量额度不能大于真流量额度")
+	})
+
+	t.Run("启用虚流量时配置正确则创建成功", func(t *testing.T) {
+		req := &dto.CreatePackageRequest{
+			PackageCode:       generateUniquePackageCode("PKG_VDATA_3"),
+			PackageName:       "虚流量测试-正确",
+			PackageType:       "formal",
+			DurationMonths:    1,
+			EnableVirtualData: true,
+			RealDataMB:        func() *int64 { v := int64(1000); return &v }(),
+			VirtualDataMB:     func() *int64 { v := int64(500); return &v }(),
+		}
+
+		resp, err := svc.Create(ctx, req)
+		require.NoError(t, err)
+		assert.True(t, resp.EnableVirtualData)
+		assert.Equal(t, int64(500), resp.VirtualDataMB)
+	})
+
+	t.Run("不启用虚流量时可以不填虚流量值", func(t *testing.T) {
+		req := &dto.CreatePackageRequest{
+			PackageCode:       generateUniquePackageCode("PKG_VDATA_4"),
+			PackageName:       "虚流量测试-不启用",
+			PackageType:       "formal",
+			DurationMonths:    1,
+			EnableVirtualData: false,
+			RealDataMB:        func() *int64 { v := int64(1000); return &v }(),
+		}
+
+		resp, err := svc.Create(ctx, req)
+		require.NoError(t, err)
+		assert.False(t, resp.EnableVirtualData)
+	})
+
+	t.Run("更新时校验虚流量配置", func(t *testing.T) {
+		req := &dto.CreatePackageRequest{
+			PackageCode:       generateUniquePackageCode("PKG_VDATA_5"),
+			PackageName:       "虚流量测试-更新",
+			PackageType:       "formal",
+			DurationMonths:    1,
+			EnableVirtualData: false,
+			RealDataMB:        func() *int64 { v := int64(1000); return &v }(),
+		}
+		created, err := svc.Create(ctx, req)
+		require.NoError(t, err)
+
+		enableVD := true
+		virtualDataMB := int64(2000)
+		updateReq := &dto.UpdatePackageRequest{
+			EnableVirtualData: &enableVD,
+			VirtualDataMB:     &virtualDataMB,
+		}
+		_, err = svc.Update(ctx, created.ID, updateReq)
+		require.Error(t, err)
+		appErr, ok := err.(*errors.AppError)
+		require.True(t, ok)
+		assert.Equal(t, errors.CodeInvalidParam, appErr.Code)
+	})
+}
+
 func TestPackageService_SeriesNameInResponse(t *testing.T) {
 	tx := testutils.NewTestTransaction(t)
 	packageStore := postgres.NewPackageStore(tx)
 	packageSeriesStore := postgres.NewPackageSeriesStore(tx)
-	svc := New(packageStore, packageSeriesStore, nil, nil)
+	svc := New(packageStore, packageSeriesStore, nil)
 
 	ctx := middleware.SetUserContext(context.Background(), &middleware.UserContextInfo{
 		UserID:   1,
@@ -485,7 +574,6 @@ func TestPackageService_SeriesNameInResponse(t *testing.T) {
 			SeriesID:       &series.ID,
 			PackageType:    "formal",
 			DurationMonths: 1,
-			Price:          9900,
 		}
 
 		resp, err := svc.Create(ctx, req)
@@ -502,7 +590,6 @@ func TestPackageService_SeriesNameInResponse(t *testing.T) {
 			SeriesID:       &series.ID,
 			PackageType:    "formal",
 			DurationMonths: 1,
-			Price:          9900,
 		}
 		created, err := svc.Create(ctx, req)
 		require.NoError(t, err)
@@ -522,7 +609,6 @@ func TestPackageService_SeriesNameInResponse(t *testing.T) {
 			SeriesID:       &series.ID,
 			PackageType:    "formal",
 			DurationMonths: 1,
-			Price:          9900,
 		}
 		created, err := svc.Create(ctx, req)
 		require.NoError(t, err)
@@ -547,7 +633,6 @@ func TestPackageService_SeriesNameInResponse(t *testing.T) {
 				SeriesID:       &series.ID,
 				PackageType:    "formal",
 				DurationMonths: 1,
-				Price:          9900,
 			}
 			_, err := svc.Create(ctx, req)
 			require.NoError(t, err)
@@ -578,7 +663,6 @@ func TestPackageService_SeriesNameInResponse(t *testing.T) {
 			PackageName:    "无系列套餐",
 			PackageType:    "formal",
 			DurationMonths: 1,
-			Price:          9900,
 		}
 
 		resp, err := svc.Create(ctx, req)