实现套餐生效条件覆盖与购买快照

pkg/constants/constants.go

@@ -143,6 +143,12 @@ const (
 	PackageCalendarTypeByDay        = "by_day"        // 按天周期
 )
 
+// 套餐生效条件常量
+const (
+	PackageExpiryBaseFromActivation = "from_activation" // 实名激活时生效
+	PackageExpiryBaseFromPurchase   = "from_purchase"   // 购买即生效
+)
+
 // 套餐流量重置周期常量
 const (
 	PackageDataResetDaily   = "daily"   // 每日重置