fix(poll): Series 删除前检查关联套餐 POLL-04

- package_store.go 新增 CountBySeriesID 方法，统计指定系列下的活跃套餐数量
- package_series/service.go Service 注入 packageStore 字段，Delete 前调用 CountBySeriesID 检查
- bootstrap/services.go 更新 PackageSeries 服务初始化，传入 PackageStore

internal/bootstrap/services.go

@@ -159,7 +159,7 @@ func initServices(s *stores, deps *Dependencies) *services {
 		DeviceImport:               deviceImportSvc.New(deps.DB, s.DeviceImportTask, deps.QueueClient),
 		AssetAllocationRecord:      assetAllocationRecordSvc.New(deps.DB, s.AssetAllocationRecord, s.Shop, s.Account),
 		Carrier:                    carrierSvc.New(s.Carrier),
-		PackageSeries:              packageSeriesSvc.New(s.PackageSeries, s.ShopSeriesAllocation),
+		PackageSeries:              packageSeriesSvc.New(s.PackageSeries, s.ShopSeriesAllocation, s.Package),
 		Package:                    packageSvc.New(s.Package, s.PackageSeries, s.ShopPackageAllocation, s.ShopSeriesAllocation),
 		PackageDailyRecord:         packageSvc.NewDailyRecordService(deps.DB, deps.Redis, s.PackageUsageDailyRecord, deps.Logger),
 		PackageCustomerView:        packageSvc.NewCustomerViewService(deps.DB, deps.Redis, s.PackageUsage, deps.Logger),