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/device/service.go

@@ -19,9 +19,9 @@ type Service struct {
 	iotCardStore               *postgres.IotCardStore
 	shopStore                  *postgres.ShopStore
 	assetAllocationRecordStore *postgres.AssetAllocationRecordStore
-	seriesAllocationStore      *postgres.ShopSeriesAllocationStore
-	packageSeriesStore         *postgres.PackageSeriesStore
+	shopPackageAllocationStore *postgres.ShopPackageAllocationStore
 	shopSeriesAllocationStore  *postgres.ShopSeriesAllocationStore
+	packageSeriesStore         *postgres.PackageSeriesStore
 }
 
 func New(
@@ -31,7 +31,8 @@ func New(
 	iotCardStore *postgres.IotCardStore,
 	shopStore *postgres.ShopStore,
 	assetAllocationRecordStore *postgres.AssetAllocationRecordStore,
-	seriesAllocationStore *postgres.ShopSeriesAllocationStore,
+	shopPackageAllocationStore *postgres.ShopPackageAllocationStore,
+	shopSeriesAllocationStore *postgres.ShopSeriesAllocationStore,
 	packageSeriesStore *postgres.PackageSeriesStore,
 ) *Service {
 	return &Service{
@@ -41,9 +42,9 @@ func New(
 		iotCardStore:               iotCardStore,
 		shopStore:                  shopStore,
 		assetAllocationRecordStore: assetAllocationRecordStore,
-		seriesAllocationStore:      seriesAllocationStore,
+		shopPackageAllocationStore: shopPackageAllocationStore,
+		shopSeriesAllocationStore:  shopSeriesAllocationStore,
 		packageSeriesStore:         packageSeriesStore,
-		shopSeriesAllocationStore:  seriesAllocationStore,
 	}
 }
 
@@ -632,20 +633,27 @@ func (s *Service) BatchSetSeriesBinding(ctx context.Context, req *dto.BatchSetDe
 			continue
 		}
 
-		// 验证操作者权限（仅代理用户）
+		// 验证操作者权限（仅代理用户）- 检查是否有该系列的套餐分配
 		if operatorShopID != nil && req.SeriesID > 0 {
-			allocation, err := s.shopSeriesAllocationStore.GetByShopAndSeries(ctx, *operatorShopID, req.SeriesID)
+			seriesAllocations, err := s.shopSeriesAllocationStore.GetByShopID(ctx, *operatorShopID)
 			if err != nil {
-				if err == gorm.ErrRecordNotFound || allocation.Status != 1 {
-					failedItems = append(failedItems, dto.DeviceSeriesBindngFailedItem{
-						DeviceID: deviceID,
-						DeviceNo: device.DeviceNo,
-						Reason:   "您没有权限分配该套餐系列",
-					})
-					continue
-				}
 				return nil, err
 			}
+			hasSeriesAllocation := false
+			for _, alloc := range seriesAllocations {
+				if alloc.SeriesID == req.SeriesID && alloc.Status == 1 {
+					hasSeriesAllocation = true
+					break
+				}
+			}
+			if !hasSeriesAllocation {
+				failedItems = append(failedItems, dto.DeviceSeriesBindngFailedItem{
+					DeviceID: deviceID,
+					DeviceNo: device.DeviceNo,
+					Reason:   "您没有权限分配该套餐系列",
+				})
+				continue
+			}
 		}
 
 		// 验证设备权限（基于 device.ShopID）