feat: 实现门店套餐分配功能并统一测试基础设施

新增功能：
- 门店套餐分配管理（shop_package_allocation）：支持门店套餐库存管理
- 门店套餐系列分配管理（shop_series_allocation）：支持套餐系列分配和佣金层级设置
- 我的套餐查询（my_package）：支持门店查询自己的套餐分配情况

测试改进：
- 统一集成测试基础设施，新增 testutils.NewIntegrationTestEnv
- 重构所有集成测试使用新的测试环境设置
- 移除旧的测试辅助函数和冗余测试文件
- 新增 test_helpers_test.go 统一任务测试辅助

技术细节：
- 新增数据库迁移 000025_create_shop_allocation_tables
- 新增 3 个 Handler、Service、Store 和对应的单元测试
- 更新 OpenAPI 文档和文档生成器
- 测试覆盖率：Service 层 > 90%

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

internal/routes/shop_series_allocation.go

@@ -0,0 +1,95 @@
+package routes
+
+import (
+	"github.com/gofiber/fiber/v2"
+
+	"github.com/break/junhong_cmp_fiber/internal/handler/admin"
+	"github.com/break/junhong_cmp_fiber/internal/model/dto"
+	"github.com/break/junhong_cmp_fiber/pkg/openapi"
+)
+
+// registerShopSeriesAllocationRoutes 注册套餐系列分配相关路由
+func registerShopSeriesAllocationRoutes(router fiber.Router, handler *admin.ShopSeriesAllocationHandler, doc *openapi.Generator, basePath string) {
+	allocations := router.Group("/shop-series-allocations")
+	groupPath := basePath + "/shop-series-allocations"
+
+	Register(allocations, doc, groupPath, "GET", "", handler.List, RouteSpec{
+		Summary: "套餐系列分配列表",
+		Tags:    []string{"套餐系列分配"},
+		Input:   new(dto.ShopSeriesAllocationListRequest),
+		Output:  new(dto.ShopSeriesAllocationPageResult),
+		Auth:    true,
+	})
+
+	Register(allocations, doc, groupPath, "POST", "", handler.Create, RouteSpec{
+		Summary: "创建套餐系列分配",
+		Tags:    []string{"套餐系列分配"},
+		Input:   new(dto.CreateShopSeriesAllocationRequest),
+		Output:  new(dto.ShopSeriesAllocationResponse),
+		Auth:    true,
+	})
+
+	Register(allocations, doc, groupPath, "GET", "/:id", handler.Get, RouteSpec{
+		Summary: "获取套餐系列分配详情",
+		Tags:    []string{"套餐系列分配"},
+		Input:   new(dto.IDReq),
+		Output:  new(dto.ShopSeriesAllocationResponse),
+		Auth:    true,
+	})
+
+	Register(allocations, doc, groupPath, "PUT", "/:id", handler.Update, RouteSpec{
+		Summary: "更新套餐系列分配",
+		Tags:    []string{"套餐系列分配"},
+		Input:   new(dto.UpdateShopSeriesAllocationParams),
+		Output:  new(dto.ShopSeriesAllocationResponse),
+		Auth:    true,
+	})
+
+	Register(allocations, doc, groupPath, "DELETE", "/:id", handler.Delete, RouteSpec{
+		Summary: "删除套餐系列分配",
+		Tags:    []string{"套餐系列分配"},
+		Input:   new(dto.IDReq),
+		Output:  nil,
+		Auth:    true,
+	})
+
+	Register(allocations, doc, groupPath, "PUT", "/:id/status", handler.UpdateStatus, RouteSpec{
+		Summary: "更新套餐系列分配状态",
+		Tags:    []string{"套餐系列分配"},
+		Input:   new(dto.UpdateStatusParams),
+		Output:  nil,
+		Auth:    true,
+	})
+
+	Register(allocations, doc, groupPath, "GET", "/:id/tiers", handler.ListTiers, RouteSpec{
+		Summary: "获取梯度佣金列表",
+		Tags:    []string{"套餐系列分配"},
+		Input:   new(dto.IDReq),
+		Output:  new(dto.CommissionTierListResult),
+		Auth:    true,
+	})
+
+	Register(allocations, doc, groupPath, "POST", "/:id/tiers", handler.AddTier, RouteSpec{
+		Summary: "添加梯度佣金配置",
+		Tags:    []string{"套餐系列分配"},
+		Input:   new(dto.CreateCommissionTierParams),
+		Output:  new(dto.CommissionTierResponse),
+		Auth:    true,
+	})
+
+	Register(allocations, doc, groupPath, "PUT", "/:id/tiers/:tier_id", handler.UpdateTier, RouteSpec{
+		Summary: "更新梯度佣金配置",
+		Tags:    []string{"套餐系列分配"},
+		Input:   new(dto.UpdateCommissionTierParams),
+		Output:  new(dto.CommissionTierResponse),
+		Auth:    true,
+	})
+
+	Register(allocations, doc, groupPath, "DELETE", "/:id/tiers/:tier_id", handler.DeleteTier, RouteSpec{
+		Summary: "删除梯度佣金配置",
+		Tags:    []string{"套餐系列分配"},
+		Input:   new(dto.TierIDParams),
+		Output:  nil,
+		Auth:    true,
+	})
+}