解耦订单和申诉模块外部依赖

backend/internal/modules/dispute/arbitration.go

@@ -256,7 +256,7 @@ func (r *Repository) prepareRefund(order *model.RentalOrder, amountCent int64, b
 	if amountCent <= 0 {
 		return nil, nil
 	}
-	if r.refundFunc == nil {
+	if r.refundStarter == nil {
 		return nil, ErrDependencyUnavailable
 	}
 	order.RefundStatus = "pending"
@@ -271,10 +271,10 @@ func (r *Repository) prepareRefund(order *model.RentalOrder, amountCent int64, b
 }
 
 func (r *Repository) startRefundBestEffort(ctx context.Context, action *refundAction) {
-	if action == nil || r.refundFunc == nil {
+	if action == nil || r.refundStarter == nil {
 		return
 	}
-	_, _ = r.refundFunc(ctx, action.OrderID, action.RefundAmountCent, action.BizType, action.Remark)
+	_, _ = r.refundStarter.StartRefund(ctx, action.OrderID, action.RefundAmountCent, action.BizType, action.Remark)
 }
 
 func renterFrozenBalance(tx *gorm.DB, renterID uint64) (int64, error) {