get KanbanHistory order by createTime desc

kanban-console/src/main/java/com/uas/kanban/dao/KanbanHistoryDao.java

@@ -33,6 +33,8 @@ public class KanbanHistoryDao extends BaseDao<KanbanHistory> {
         query.project("code", true);
         query.project("description", true);
         query.project("createTime", true);
+        // 按创建时间倒序
+        query.order("-createTime");
         // 只取前 20 条记录
         FindOptions findOptions = new FindOptions();
         findOptions.limit(20);