feat(ui): keyboard shortcuts (/ Ctrl+N Space Esc)

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

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

@@ -10,7 +10,7 @@
         <TextBlock FontFamily="{DynamicResource SansFamily}" FontSize="18"
                    FontWeight="SemiBold" Foreground="{DynamicResource TextBrush}"
                    Text="Lists"/>
-        <TextBox Classes="search" Margin="0,8,0,0" PlaceholderText="Search…"
+        <TextBox x:Name="SearchBox" Classes="search" Margin="0,8,0,0" PlaceholderText="Search…"
                  Text="{Binding SearchText, Mode=TwoWay}"/>
       </StackPanel>
     </Border>

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

@@ -6,7 +6,15 @@ namespace ClaudeDo.Ui.Views.Islands;
 
 public partial class ListsIslandView : UserControl
 {
-    public ListsIslandView() { InitializeComponent(); }
+    public ListsIslandView()
+    {
+        InitializeComponent();
+        DataContextChanged += (_, _) =>
+        {
+            if (DataContext is ListsIslandViewModel vm)
+                vm.FocusSearchRequested += (_, _) => SearchBox.Focus();
+        };
+    }
 
     private void OnItemTapped(object? sender, RoutedEventArgs e)
     {

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

@@ -20,7 +20,7 @@
 
     <!-- Add-task row -->
     <Border DockPanel.Dock="Top" Margin="18,8,18,4">
-      <TextBox Watermark="Add a task…" Text="{Binding NewTaskTitle, Mode=TwoWay}">
+      <TextBox x:Name="AddTaskBox" Watermark="Add a task…" Text="{Binding NewTaskTitle, Mode=TwoWay}">
         <TextBox.KeyBindings>
           <KeyBinding Gesture="Enter" Command="{Binding AddCommand}"/>
         </TextBox.KeyBindings>

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

@@ -1,8 +1,17 @@
 using Avalonia.Controls;
+using ClaudeDo.Ui.ViewModels.Islands;
 
 namespace ClaudeDo.Ui.Views.Islands;
 
 public partial class TasksIslandView : UserControl
 {
-    public TasksIslandView() { InitializeComponent(); }
+    public TasksIslandView()
+    {
+        InitializeComponent();
+        DataContextChanged += (_, _) =>
+        {
+            if (DataContext is TasksIslandViewModel vm)
+                vm.FocusAddTaskRequested += (_, _) => AddTaskBox.Focus();
+        };
+    }
 }