feat(model): 添加代购和强充配置字段

internal/model/shop_series_allocation.go

@@ -24,6 +24,10 @@ type ShopSeriesAllocation struct {
 	OneTimeCommissionMode      string `gorm:"column:one_time_commission_mode;type:varchar(20);comment:返佣模式 fixed-固定金额 percent-百分比" json:"one_time_commission_mode"`
 	OneTimeCommissionValue     int64  `gorm:"column:one_time_commission_value;type:bigint;default:0;comment:佣金金额(分)或比例(千分比)" json:"one_time_commission_value"`
 
+	// 强充配置
+	EnableForceRecharge bool  `gorm:"column:enable_force_recharge;type:boolean;default:false;comment:是否启用强充(累计充值时可选)" json:"enable_force_recharge"`
+	ForceRechargeAmount int64 `gorm:"column:force_recharge_amount;type:bigint;default:0;comment:强充金额(分,0表示使用阈值金额)" json:"force_recharge_amount"`
+
 	Status int `gorm:"column:status;type:int;default:1;not null;comment:状态 1-启用 2-禁用" json:"status"`
 }