实现租客成长等级并优化展示

backend/internal/modules/order/dto.go

@@ -32,6 +32,13 @@ type OrderDTO struct {
 	DepositOriginalAmountCent   int64             `json:"deposit_original_amount_cent"`
 	DepositWaivedAmountCent     int64             `json:"deposit_waived_amount_cent"`
 	PlatformFeeCent             *int64            `json:"platform_fee_cent,omitempty"`
+	RentOriginalAmountCent      int64             `json:"rent_original_amount_cent,omitempty"`
+	RentDiscountAmountCent      int64             `json:"rent_discount_amount_cent,omitempty"`
+	RenterGrowthLevel           string            `json:"renter_growth_level,omitempty"`
+	RenterGrowthLevelName       string            `json:"renter_growth_level_name,omitempty"`
+	RenterDiscountBps           int               `json:"renter_discount_bps,omitempty"`
+	GrowthPointsAwarded         int64             `json:"growth_points_awarded,omitempty"`
+	GrowthPointsAwardedAt       *time.Time        `json:"growth_points_awarded_at,omitempty"`
 	AccountSnapshot             datatypes.JSON    `json:"account_snapshot"`
 	Status                      string            `json:"status"`
 	HandoffStatus               string            `json:"handoff_status"`