重构: 店铺套餐分配系统从加价模式改为返佣模式

主要变更：
- 重构分配模型：从加价模式（pricing_mode/pricing_value）改为返佣模式（base_commission + tier_commission）
- 删除独立的 my_package 接口，统一到 /api/admin/packages（通过数据权限自动过滤）
- 新增批量分配和批量调价功能，支持事务和性能优化
- 新增配置版本管理，订单创建时锁定返佣配置
- 新增成本价历史记录，支持审计和纠纷处理
- 新增统计缓存系统（Redis + 异步任务），优化梯度返佣计算性能
- 删除冗余的梯度佣金独立 CRUD 接口（合并到分配配置中）
- 归档 3 个已完成的 OpenSpec changes 并同步 8 个新 capabilities 到 main specs

技术细节：
- 数据库迁移：000026_refactor_shop_package_allocation
- 新增 Store：AllocationConfigStore, PriceHistoryStore, CommissionStatsStore
- 新增 Service：BatchAllocationService, BatchPricingService, CommissionStatsService
- 新增异步任务：统计更新、定时同步、周期归档
- 测试覆盖：批量操作集成测试、梯度佣金 CRUD 清理验证

影响：
- API 变更：删除 4 个梯度 CRUD 接口（POST/GET/PUT/DELETE /:id/tiers）
- API 新增：批量分配、批量调价接口
- 数据模型：重构 shop_series_allocation 表结构
- 性能优化：批量操作使用 CreateInBatches，统计使用 Redis 缓存

相关文档：
- openspec/changes/archive/2026-01-28-refactor-shop-package-allocation/
- openspec/specs/agent-available-packages/
- openspec/specs/allocation-config-versioning/
- 等 8 个新 capability specs

internal/service/package/service_test.go

@@ -6,6 +6,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/break/junhong_cmp_fiber/internal/model"
 	"github.com/break/junhong_cmp_fiber/internal/model/dto"
 	"github.com/break/junhong_cmp_fiber/internal/store/postgres"
 	"github.com/break/junhong_cmp_fiber/pkg/constants"
@@ -24,7 +25,7 @@ func TestPackageService_Create(t *testing.T) {
 	tx := testutils.NewTestTransaction(t)
 	packageStore := postgres.NewPackageStore(tx)
 	packageSeriesStore := postgres.NewPackageSeriesStore(tx)
-	svc := New(packageStore, packageSeriesStore)
+	svc := New(packageStore, packageSeriesStore, nil, nil, nil)
 
 	ctx := middleware.SetUserContext(context.Background(), &middleware.UserContextInfo{
 		UserID:   1,
@@ -97,7 +98,7 @@ func TestPackageService_UpdateStatus(t *testing.T) {
 	tx := testutils.NewTestTransaction(t)
 	packageStore := postgres.NewPackageStore(tx)
 	packageSeriesStore := postgres.NewPackageSeriesStore(tx)
-	svc := New(packageStore, packageSeriesStore)
+	svc := New(packageStore, packageSeriesStore, nil, nil, nil)
 
 	ctx := middleware.SetUserContext(context.Background(), &middleware.UserContextInfo{
 		UserID:   1,
@@ -167,7 +168,7 @@ func TestPackageService_UpdateShelfStatus(t *testing.T) {
 	tx := testutils.NewTestTransaction(t)
 	packageStore := postgres.NewPackageStore(tx)
 	packageSeriesStore := postgres.NewPackageSeriesStore(tx)
-	svc := New(packageStore, packageSeriesStore)
+	svc := New(packageStore, packageSeriesStore, nil, nil, nil)
 
 	ctx := middleware.SetUserContext(context.Background(), &middleware.UserContextInfo{
 		UserID:   1,
@@ -254,7 +255,7 @@ func TestPackageService_Get(t *testing.T) {
 	tx := testutils.NewTestTransaction(t)
 	packageStore := postgres.NewPackageStore(tx)
 	packageSeriesStore := postgres.NewPackageSeriesStore(tx)
-	svc := New(packageStore, packageSeriesStore)
+	svc := New(packageStore, packageSeriesStore, nil, nil, nil)
 
 	ctx := middleware.SetUserContext(context.Background(), &middleware.UserContextInfo{
 		UserID:   1,
@@ -292,7 +293,7 @@ func TestPackageService_Update(t *testing.T) {
 	tx := testutils.NewTestTransaction(t)
 	packageStore := postgres.NewPackageStore(tx)
 	packageSeriesStore := postgres.NewPackageSeriesStore(tx)
-	svc := New(packageStore, packageSeriesStore)
+	svc := New(packageStore, packageSeriesStore, nil, nil, nil)
 
 	ctx := middleware.SetUserContext(context.Background(), &middleware.UserContextInfo{
 		UserID:   1,
@@ -341,7 +342,7 @@ func TestPackageService_Delete(t *testing.T) {
 	tx := testutils.NewTestTransaction(t)
 	packageStore := postgres.NewPackageStore(tx)
 	packageSeriesStore := postgres.NewPackageSeriesStore(tx)
-	svc := New(packageStore, packageSeriesStore)
+	svc := New(packageStore, packageSeriesStore, nil, nil, nil)
 
 	ctx := middleware.SetUserContext(context.Background(), &middleware.UserContextInfo{
 		UserID:   1,
@@ -376,7 +377,7 @@ func TestPackageService_List(t *testing.T) {
 	tx := testutils.NewTestTransaction(t)
 	packageStore := postgres.NewPackageStore(tx)
 	packageSeriesStore := postgres.NewPackageSeriesStore(tx)
-	svc := New(packageStore, packageSeriesStore)
+	svc := New(packageStore, packageSeriesStore, nil, nil, nil)
 
 	ctx := middleware.SetUserContext(context.Background(), &middleware.UserContextInfo{
 		UserID:   1,
@@ -454,3 +455,135 @@ func TestPackageService_List(t *testing.T) {
 		}
 	})
 }
+
+func TestPackageService_SeriesNameInResponse(t *testing.T) {
+	tx := testutils.NewTestTransaction(t)
+	packageStore := postgres.NewPackageStore(tx)
+	packageSeriesStore := postgres.NewPackageSeriesStore(tx)
+	svc := New(packageStore, packageSeriesStore, nil, nil, nil)
+
+	ctx := middleware.SetUserContext(context.Background(), &middleware.UserContextInfo{
+		UserID:   1,
+		UserType: constants.UserTypePlatform,
+	})
+
+	// 创建套餐系列
+	series := &model.PackageSeries{
+		SeriesCode:  fmt.Sprintf("SERIES_%d", time.Now().UnixNano()),
+		SeriesName:  "测试套餐系列",
+		Description: "用于测试系列名称字段",
+		Status:      constants.StatusEnabled,
+	}
+	series.Creator = 1
+	err := packageSeriesStore.Create(ctx, series)
+	require.NoError(t, err)
+
+	t.Run("创建套餐时返回系列名称", func(t *testing.T) {
+		req := &dto.CreatePackageRequest{
+			PackageCode:    generateUniquePackageCode("PKG_SERIES"),
+			PackageName:    "带系列的套餐",
+			SeriesID:       &series.ID,
+			PackageType:    "formal",
+			DurationMonths: 1,
+			Price:          9900,
+		}
+
+		resp, err := svc.Create(ctx, req)
+		require.NoError(t, err)
+		assert.NotNil(t, resp.SeriesName)
+		assert.Equal(t, series.SeriesName, *resp.SeriesName)
+	})
+
+	t.Run("获取套餐时返回系列名称", func(t *testing.T) {
+		// 先创建一个套餐
+		req := &dto.CreatePackageRequest{
+			PackageCode:    generateUniquePackageCode("PKG_GET_SERIES"),
+			PackageName:    "获取测试套餐",
+			SeriesID:       &series.ID,
+			PackageType:    "formal",
+			DurationMonths: 1,
+			Price:          9900,
+		}
+		created, err := svc.Create(ctx, req)
+		require.NoError(t, err)
+
+		// 获取套餐
+		resp, err := svc.Get(ctx, created.ID)
+		require.NoError(t, err)
+		assert.NotNil(t, resp.SeriesName)
+		assert.Equal(t, series.SeriesName, *resp.SeriesName)
+	})
+
+	t.Run("更新套餐时返回系列名称", func(t *testing.T) {
+		// 先创建一个套餐
+		req := &dto.CreatePackageRequest{
+			PackageCode:    generateUniquePackageCode("PKG_UPDATE_SERIES"),
+			PackageName:    "更新测试套餐",
+			SeriesID:       &series.ID,
+			PackageType:    "formal",
+			DurationMonths: 1,
+			Price:          9900,
+		}
+		created, err := svc.Create(ctx, req)
+		require.NoError(t, err)
+
+		// 更新套餐
+		newName := "更新后的套餐"
+		updateReq := &dto.UpdatePackageRequest{
+			PackageName: &newName,
+		}
+		resp, err := svc.Update(ctx, created.ID, updateReq)
+		require.NoError(t, err)
+		assert.NotNil(t, resp.SeriesName)
+		assert.Equal(t, series.SeriesName, *resp.SeriesName)
+	})
+
+	t.Run("列表查询时返回系列名称", func(t *testing.T) {
+		// 创建多个带系列的套餐
+		for i := 0; i < 3; i++ {
+			req := &dto.CreatePackageRequest{
+				PackageCode:    generateUniquePackageCode(fmt.Sprintf("PKG_LIST_SERIES_%d", i)),
+				PackageName:    fmt.Sprintf("列表测试套餐%d", i),
+				SeriesID:       &series.ID,
+				PackageType:    "formal",
+				DurationMonths: 1,
+				Price:          9900,
+			}
+			_, err := svc.Create(ctx, req)
+			require.NoError(t, err)
+		}
+
+		// 查询列表
+		listReq := &dto.PackageListRequest{
+			Page:     1,
+			PageSize: 10,
+			SeriesID: &series.ID,
+		}
+		resp, _, err := svc.List(ctx, listReq)
+		require.NoError(t, err)
+		assert.Greater(t, len(resp), 0)
+
+		// 验证所有套餐都有系列名称
+		for _, pkg := range resp {
+			if pkg.SeriesID != nil && *pkg.SeriesID == series.ID {
+				assert.NotNil(t, pkg.SeriesName)
+				assert.Equal(t, series.SeriesName, *pkg.SeriesName)
+			}
+		}
+	})
+
+	t.Run("没有系列的套餐SeriesName为空", func(t *testing.T) {
+		req := &dto.CreatePackageRequest{
+			PackageCode:    generateUniquePackageCode("PKG_NO_SERIES"),
+			PackageName:    "无系列套餐",
+			PackageType:    "formal",
+			DurationMonths: 1,
+			Price:          9900,
+		}
+
+		resp, err := svc.Create(ctx, req)
+		require.NoError(t, err)
+		assert.Nil(t, resp.SeriesID)
+		assert.Nil(t, resp.SeriesName)
+	})
+}