修复订单金额落库不对的问题

internal/model/dto/asset_dto.go

@@ -135,7 +135,8 @@ type AssetPackageResponse struct {
 	ExpiresAt         *time.Time `json:"expires_at,omitempty" description:"到期时间（待生效套餐为空）"`
 	MasterUsageID     *uint      `json:"master_usage_id,omitempty" description:"主套餐ID（加油包时有值）"`
 	Priority          int        `json:"priority" description:"优先级"`
-	PaidAmount        *int64     `json:"paid_amount,omitempty" description:"购买实付金额（分），线下支付或无订单分配时为空"`
+	PaidAmount        *int64     `json:"paid_amount,omitempty" description:"购买成本价（分），仅平台账号可见，非平台账号不返回此字段"`
+	RetailAmount      *int64     `json:"retail_amount,omitempty" description:"购买零售价（分），无订单关联时为空"`
 	CreatedAt         time.Time  `json:"created_at" description:"创建时间"`
 }
 

internal/model/order.go

@@ -152,7 +152,8 @@ type OrderItem struct {
 	PackageName              string  `gorm:"column:package_name;type:varchar(100);not null;comment:套餐名称(快照)" json:"package_name"`
 	PackageType              *string `gorm:"column:package_type;type:varchar(20);comment:套餐类型快照 formal-正式套餐 addon-加油包" json:"package_type"`
 	Quantity                 int     `gorm:"column:quantity;type:int;default:1;not null;comment:数量" json:"quantity"`
-	UnitPrice                int64   `gorm:"column:unit_price;type:bigint;not null;comment:单价(分)" json:"unit_price"`
+	UnitPrice                int64   `gorm:"column:unit_price;type:bigint;not null;comment:零售单价快照（分，客户面值）" json:"unit_price"`
+	CostPrice                int64   `gorm:"column:cost_price;type:bigint;not null;default:0;comment:成本单价快照（分，代购/钱包支付场景为买家成本，平台自营或赠送时为0）" json:"cost_price"`
 	Amount                   int64   `gorm:"column:amount;type:bigint;not null;comment:小计金额(分)" json:"amount"`
 	PackagePriceConfigStatus int     `gorm:"column:package_price_config_status;type:int;default:0;not null;comment:套餐价格配置状态快照 0-未配置 1-赠送0价 2-已配置非0" json:"package_price_config_status"`
 	PackageIsGift            bool    `gorm:"column:package_is_gift;type:boolean;default:false;not null;comment:套餐是否赠送快照 true-赠送 false-普通可售" json:"package_is_gift"`

internal/model/package.go

@@ -84,7 +84,8 @@ type PackageUsage struct {
 	HasIndependentExpiry      bool       `gorm:"column:has_independent_expiry;type:boolean;default:false;comment:加油包是否有独立有效期(true-有独立到期时间 false-跟随主套餐)" json:"has_independent_expiry"`
 	PendingRealnameActivation bool       `gorm:"column:pending_realname_activation;type:boolean;default:false;comment:是否等待实名激活(true-待实名后激活 false-已激活或不需实名)" json:"pending_realname_activation"`
 	PackageName               string     `gorm:"column:package_name;type:varchar(255);not null;default:'';comment:套餐名称快照(从Package复制,用于历史记录展示)" json:"package_name"`
-	PaidAmount                *int64     `gorm:"column:paid_amount;type:bigint;comment:购买实付金额快照（分，从订单复制，无订单或线下支付时为null）" json:"paid_amount,omitempty"`
+	PaidAmount                *int64     `gorm:"column:paid_amount;type:bigint;comment:购买实付金额快照（分，从订单 actual_paid_amount 复制，无订单或线下支付时为null）" json:"paid_amount,omitempty"`
+	RetailAmount              *int64     `gorm:"column:retail_amount;type:bigint;comment:购买零售价快照（分，从订单 total_amount 复制，无订单关联时为null）" json:"retail_amount,omitempty"`
 	PackagePriceConfigStatus  int        `gorm:"column:package_price_config_status;type:int;default:0;not null;comment:套餐价格配置状态快照 0-未配置 1-赠送0价 2-已配置非0" json:"package_price_config_status"`
 	PackageIsGift             bool       `gorm:"column:package_is_gift;type:boolean;default:false;not null;comment:套餐是否赠送快照 true-赠送 false-普通可售" json:"package_is_gift"`
 	DataResetCycle            string     `gorm:"column:data_reset_cycle;type:varchar(20);comment:流量重置周期(从Package复制,用于历史记录)" json:"data_reset_cycle"`