1.列表，筛选完成和未完成

2.详情，增加checkout

lib/page/plan/detail/other/done_stamp.dart

@@ -1,5 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:plan/page/plan/detail/viewmodel/plan_detail_store.dart';
+import 'package:plan/utils/common.dart';
+import 'package:plan/utils/format.dart';
 import 'package:provider/provider.dart';
 
 class DoneStamp extends StatefulWidget {
@@ -38,6 +40,13 @@ class _DoneStampState extends State<DoneStamp> {
                       "Completed",
                       style: TextStyle(fontWeight: FontWeight.w700),
                     ),
+                    Visibility(
+                      visible: getNotEmpty(store.planDetail.planEndTime) != null,
+                      child: Text(
+                        formatDateUS(store.planDetail.planEndTime!),
+                        style: TextStyle(fontSize: 12),
+                      ),
+                    ),
                   ],
                 ),
               ),