fix(admin): 管理端取消订单改为调用 userSvc.CancelOrder，补充优惠券和积分退还逻辑

internal/api/admin/pay_orders_admin.go

@@ -1031,11 +1031,7 @@ func (h *handler) CancelOrder() core.HandlerFunc {
 			ctx.AbortWithError(core.Error(http.StatusBadRequest, 21006, "订单不存在"))
 			return
 		}
-		_, err = h.writeDB.Orders.WithContext(ctx.RequestContext()).Where(h.readDB.Orders.ID.Eq(order.ID), h.readDB.Orders.Status.Eq(1)).Updates(map[string]any{
-			h.readDB.Orders.Status.ColumnName().String():      3,
-			h.readDB.Orders.CancelledAt.ColumnName().String(): time.Now(),
-		})
-		if err != nil {
+		if _, err = h.userSvc.CancelOrder(ctx.RequestContext(), order.UserID, order.ID, "admin_cancel"); err != nil {
 			ctx.AbortWithError(core.Error(http.StatusBadRequest, 21007, err.Error()))
 			return
 		}