Ensure containers show up in the menu when they are created

Bitvault/ItemViewModel.cs

@@ -1,15 +1,46 @@
-using Toolkit.Foundation;
+using CommunityToolkit.Mvvm.ComponentModel;
+using Toolkit.Foundation;
 
 namespace Bitvault;
 
-public class ItemViewModel(IServiceProvider provider,
-    IServiceFactory factory,
-    IMediator mediator,
-    IPublisher publisher,
-    ISubscriber subscriber,
-    IDisposer disposer,
-    IContentTemplate template) :
-    ObservableViewModel(provider, factory, mediator, publisher, subscriber, disposer)
+public partial class ItemViewModel : 
+    ObservableCollectionViewModel<IItemViewModel>,
+    INotificationHandler<Confirm<Item>>
 {
-    public IContentTemplate Template { get; set; } = template;
-}
+    [ObservableProperty]
+    private int? id;
+
+    [ObservableProperty]
+    private string named;
+
+    public ItemViewModel(IServiceProvider provider, 
+        IServiceFactory factory, 
+        IMediator mediator,
+        IPublisher publisher, 
+        ISubscriber subscriber, 
+        IDisposer disposer,
+        IContentTemplate template,
+        NamedComponent named,
+        int? id = null,
+        string? name = null) : base(provider, factory, mediator, publisher, subscriber, disposer)
+    {
+        Template = template;
+        Named = $"{named}";
+        Id = id;
+
+        Add<ItemHeaderViewModel>(name ?? "");
+    }
+
+    public IContentTemplate Template { get; set; }
+
+    public async Task Handle(Confirm<Item> args, CancellationToken cancellationToken = default)
+    {
+        ItemConfiguration configuration = new();
+        foreach (IItemViewModel item in this)
+        {
+            item.Invoke(configuration);
+        }
+
+         await Mediator.Handle<Create<ItemConfiguration>, bool>(Create.As(configuration), cancellationToken);
+    }
+}