1.列表，筛选完成和未完成

2.详情，增加checkout

lib/page/plan/history/viewmodel/plan_list_store.dart

@@ -0,0 +1,63 @@
+import 'package:flutter/cupertino.dart';
+import 'package:plan/api/dto/plan_item_dto.dart';
+import 'package:plan/api/endpoints/plan_api.dart';
+
+///筛选已完成和没完成
+class PlanStatusFilter {
+  bool archived;
+  bool unarchived;
+
+  PlanStatusFilter({required this.archived, required this.unarchived});
+
+  PlanStatusFilter copyWith({
+    bool? archived,
+    bool? unarchived,
+  }) {
+    return PlanStatusFilter(
+      archived: archived ?? this.archived,
+      unarchived: unarchived ?? this.unarchived,
+    );
+  }
+}
+
+class PlanListStore extends ChangeNotifier {
+  bool isInit = true;
+
+  ///原始数据
+  List<PlanItemDto> _originList = [];
+
+  List<PlanItemDto> get planList => _originList;
+
+  ///显示已完成和未完成
+  PlanStatusFilter planStatus = PlanStatusFilter(archived: true, unarchived: true);
+
+  PlanListStore() {
+    getPlanList();
+  }
+
+  Future<void> getPlanList() async {
+    _originList = await getPlanListApi();
+    isInit = false;
+    notifyListeners();
+  }
+
+  ///修改状态
+  void setPlanStatus(PlanStatusFilter planStatus) {
+    this.planStatus = planStatus;
+    notifyListeners();
+  }
+
+  ///更新子项
+  void updateStep(PlanItemDto newStep) {
+    final int index = _originList.indexWhere((e) => e.id == newStep.id);
+    if (index != -1) {
+      _originList[index] = newStep; // 引用变了 → 框架感知
+      notifyListeners();
+    }
+  }
+  ///移除子项
+  void removeStep(PlanItemDto step) {
+    _originList.removeWhere((e) => e.id == step.id);
+    notifyListeners();
+  }
+}