结构大修改，改成朴实无华的结构，不过度架构。能跑就行

Assets/Scripts/UI/Bag/BagPanel.cs

@@ -17,14 +17,13 @@ namespace NBF
         protected override void OnShow()
         {
             ItemList.List.OnClickItem += OnClickItem;
-            Game.Input.OnUICanceled += OnUICanceled;
+            InputManager.OnUICanceled += OnUICanceled;
             UseBottomMenu();
 
             List<TabItemData> tabItemList = new List<TabItemData>();
-            var role = App.Main.GetComponent<Role>();
-            var roleBag = role.GetComponent<RoleBag>();
 
-            var dic = roleBag.GetItemsByType();
+
+            var dic = RoleModel.Instance.GetItemsByType();
             foreach (var (type, list) in dic)
             {
                 TabItemData tabItem = new TabItemData
@@ -71,7 +70,7 @@ namespace NBF
 
         protected override void OnHide()
         {
-            Game.Input.OnUICanceled -= OnUICanceled;
+            InputManager.OnUICanceled -= OnUICanceled;
             ItemList.List.OnClickItem -= OnClickItem;
         }