彻底优化数据库字段

backend/internal/model/order_checkout.go

@@ -12,6 +12,8 @@ type OrderCheckout struct {
 	InitiatedBy           uint64         `gorm:"not null" json:"initiated_by"`
 	Status                string         `gorm:"size:32;not null;default:'submitted'" json:"status"`
 	RentAmount            float64        `gorm:"type:decimal(12,2);not null;default:0" json:"rent_amount"`
+	OwnerRentAmount       float64        `gorm:"type:decimal(12,2);not null;default:0" json:"owner_rent_amount"`
+	PlatformFee           float64        `gorm:"type:decimal(12,2);not null;default:0" json:"platform_fee"`
 	DepositAmount         float64        `gorm:"type:decimal(12,2);not null;default:0" json:"deposit_amount"`
 	ConsumableAmount      float64        `gorm:"type:decimal(12,2);not null;default:0" json:"consumable_amount"`
 	CoinConsumedM         float64        `gorm:"type:decimal(12,2);not null;default:0" json:"coin_consumed_m"`
@@ -20,7 +22,7 @@ type OrderCheckout struct {
 	RenterRefundAmount    float64        `gorm:"type:decimal(12,2);not null;default:0" json:"renter_refund_amount"`
 	OwnerIncomeAmount     float64        `gorm:"type:decimal(12,2);not null;default:0" json:"owner_income_amount"`
 	Content               string         `json:"content"`
-	EvidenceURLS          datatypes.JSON `json:"evidence_urls"`
+	EvidenceURLS          datatypes.JSON `gorm:"column:evidence_urls" json:"evidence_urls"`
 	OwnerAdjustmentReason string         `json:"owner_adjustment_reason"`
 	OwnerAdjustedAt       *time.Time     `json:"owner_adjusted_at"`
 	RenterConfirmedAt     *time.Time     `json:"renter_confirmed_at"`