fix(ui): wire delete confirm, close-details, uppercase eyebrow, explorer button

- A1: list-name eyebrow runs through UpperCase converter.
- D2: + Open-in-explorer icon button in AgentStrip (Process.Start on worktree path).
- D4: DeleteTaskCommand prompts inline confirm Window before deleting; shell
  wires Details.CloseDetail to clear Tasks.SelectedTask and Details.DeleteFromList
  to reload the current list.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/ClaudeDo.Ui/ViewModels/Islands/DetailsIslandViewModel.cs

@@ -78,6 +78,9 @@ public sealed partial class DetailsIslandViewModel : ViewModelBase
     // Set by the view so OpenWorktreeCommand can show the modal as a dialog
     public Func<WorktreeModalViewModel, System.Threading.Tasks.Task>? ShowWorktreeModal { get; set; }
 
+    // Set by the view so DeleteTaskCommand can prompt yes/no before deleting
+    public Func<string, System.Threading.Tasks.Task<bool>>? ConfirmAsync { get; set; }
+
     public DetailsIslandViewModel(IDbContextFactory<ClaudeDoDbContext> dbFactory, WorkerClient worker, IServiceProvider services)
     {
         _dbFactory = dbFactory;
@@ -186,10 +189,26 @@ public sealed partial class DetailsIslandViewModel : ViewModelBase
 
     private bool CanOpenWorktree() => WorktreePath != null;
 
+    [RelayCommand(CanExecute = nameof(CanOpenWorktree))]
+    private void OpenInExplorer()
+    {
+        if (WorktreePath == null) return;
+        try
+        {
+            System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo
+            {
+                FileName = WorktreePath,
+                UseShellExecute = true,
+            });
+        }
+        catch { /* explorer open is best-effort */ }
+    }
+
     partial void OnWorktreePathChanged(string? value)
     {
         OpenDiffCommand.NotifyCanExecuteChanged();
         OpenWorktreeCommand.NotifyCanExecuteChanged();
+        OpenInExplorerCommand.NotifyCanExecuteChanged();
     }
 
     [RelayCommand]
@@ -212,6 +231,11 @@ public sealed partial class DetailsIslandViewModel : ViewModelBase
     {
         if (Task == null) return;
         var row = Task;
+        if (ConfirmAsync != null)
+        {
+            var ok = await ConfirmAsync($"Delete \"{row.Title}\"? This cannot be undone.");
+            if (!ok) return;
+        }
         await using var ctx = _dbFactory.CreateDbContext();
         var repo = new TaskRepository(ctx);
         await repo.DeleteAsync(row.Id);

src/ClaudeDo.Ui/ViewModels/IslandsShellViewModel.cs

@@ -42,6 +42,12 @@ public sealed partial class IslandsShellViewModel : ViewModelBase
         Lists = lists; Tasks = tasks; Details = details;
         Lists.SelectionChanged += (_, _) => Tasks.LoadForList(Lists.SelectedList);
         Tasks.SelectionChanged += (_, _) => Details.Bind(Tasks.SelectedTask);
+        Details.CloseDetail = () => Tasks.SelectedTask = null;
+        Details.DeleteFromList = _ =>
+        {
+            Tasks.LoadForList(Lists.SelectedList);
+            return System.Threading.Tasks.Task.CompletedTask;
+        };
         _ = Lists.LoadAsync();
     }
 }

src/ClaudeDo.Ui/Views/Islands/AgentStripView.axaml

@@ -124,6 +124,10 @@
       <StackPanel Orientation="Horizontal" Spacing="6" Margin="0,4,0,0">
         <Button Classes="btn" Content="Open diff" Command="{Binding OpenDiffCommand}"/>
         <Button Classes="btn" Content="Worktree" Command="{Binding OpenWorktreeCommand}"/>
+        <Button Classes="icon-btn" ToolTip.Tip="Open in file explorer"
+                Command="{Binding OpenInExplorerCommand}">
+          <TextBlock Text="→" FontFamily="{DynamicResource MonoFont}" FontSize="13"/>
+        </Button>
       </StackPanel>
 
     </StackPanel>

src/ClaudeDo.Ui/Views/Islands/DetailsIslandView.axaml.cs

@@ -1,5 +1,8 @@
+using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Interactivity;
+using Avalonia.Layout;
+using Avalonia.Media;
 using ClaudeDo.Ui.ViewModels.Islands;
 using ClaudeDo.Ui.Views.Modals;
 
@@ -32,9 +35,56 @@ public partial class DetailsIslandView : UserControl
                 var modal = new WorktreeModalView { DataContext = worktreeVm };
                 await modal.ShowDialog(owner);
             };
+
+            vm.ConfirmAsync = ShowConfirmAsync;
         }
     }
 
+    private async System.Threading.Tasks.Task<bool> ShowConfirmAsync(string message)
+    {
+        var owner = TopLevel.GetTopLevel(this) as Window;
+        if (owner == null) return false;
+
+        var tcs = new TaskCompletionSource<bool>();
+
+        var cancel = new Button { Content = "Cancel", MinWidth = 90 };
+        var confirm = new Button { Content = "Delete", MinWidth = 90, Classes = { "danger" } };
+
+        var dialog = new Window
+        {
+            Title = "Confirm",
+            Width = 360,
+            SizeToContent = SizeToContent.Height,
+            CanResize = false,
+            WindowStartupLocation = WindowStartupLocation.CenterOwner,
+            ShowInTaskbar = false,
+            Background = this.FindResource("SurfaceBrush") as IBrush,
+            Content = new StackPanel
+            {
+                Spacing = 16,
+                Margin = new Thickness(20),
+                Children =
+                {
+                    new TextBlock { Text = message, TextWrapping = TextWrapping.Wrap },
+                    new StackPanel
+                    {
+                        Orientation = Orientation.Horizontal,
+                        Spacing = 8,
+                        HorizontalAlignment = HorizontalAlignment.Right,
+                        Children = { cancel, confirm }
+                    }
+                }
+            }
+        };
+
+        cancel.Click += (_, _) => { tcs.TrySetResult(false); dialog.Close(); };
+        confirm.Click += (_, _) => { tcs.TrySetResult(true); dialog.Close(); };
+        dialog.Closed += (_, _) => tcs.TrySetResult(false);
+
+        _ = dialog.ShowDialog(owner);
+        return await tcs.Task;
+    }
+
     private void NotesLostFocus(object? sender, RoutedEventArgs e)
     {
         if (DataContext is DetailsIslandViewModel vm)

src/ClaudeDo.Ui/Views/MainWindow.axaml

@@ -46,7 +46,7 @@
                      Foreground="{DynamicResource TextFaintBrush}"
                      VerticalAlignment="Center"/>
           <!-- current list name -->
-          <TextBlock Text="{Binding Lists.SelectedList.Name}"
+          <TextBlock Text="{Binding Lists.SelectedList.Name, Converter={StaticResource UpperCase}}"
                      FontFamily="{DynamicResource MonoFont}"
                      FontSize="11"
                      Foreground="{DynamicResource TextDimBrush}"