Add ItemsRepeater focus restoration on Extensions settings page (part deux)

src/modules/cmdpal/Microsoft.CmdPal.UI/Settings/ExtensionsPage.xaml

@@ -216,6 +216,7 @@
                     <ItemsRepeater
                         x:Name="ProvidersRepeater"
                         x:Load="{x:Bind viewModel.Extensions.HasResults, Mode=OneWay}"
+                        GettingFocus="ProvidersRepeater_GettingFocus"
                         ItemsSource="{x:Bind viewModel.Extensions.FilteredProviders, Mode=OneWay}"
                         Layout="{StaticResource VerticalStackLayout}">
                         <ItemsRepeater.ItemTemplate>
@@ -224,6 +225,7 @@
                                     Click="SettingsCard_Click"
                                     DataContext="{x:Bind}"
                                     Description="{x:Bind ExtensionSubtext, Mode=OneWay}"
+                                    GotFocus="SettingsCard_GotFocus"
                                     Header="{x:Bind DisplayName, Mode=OneWay}"
                                     IsClickEnabled="True">
                                     <controls:SettingsCard.HeaderIcon>

src/modules/cmdpal/Microsoft.CmdPal.UI/Settings/ExtensionsPage.xaml.cs

@@ -19,6 +19,7 @@ public sealed partial class ExtensionsPage : Page
     private readonly TaskScheduler _mainTaskScheduler = TaskScheduler.FromCurrentSynchronizationContext();
 
     private readonly SettingsViewModel? viewModel;
+    private int _lastFocusedIndex;
 
     public ExtensionsPage()
     {
@@ -58,4 +59,81 @@ private async void MenuFlyoutItem_OnClick(object sender, RoutedEventArgs e)
             Logger.LogError("Error when showing FallbackRankerDialog", ex);
         }
     }
+
+    private void SettingsCard_GotFocus(object sender, RoutedEventArgs e)
+    {
+        // Track focus whenever any part of the card gets focus (including children like ToggleSwitch)
+        if (sender is SettingsCard card && viewModel is not null)
+        {
+            var dataContext = card.DataContext as ProviderSettingsViewModel;
+            if (dataContext is not null)
+            {
+                var filteredProviders = viewModel.Extensions.FilteredProviders;
+                var index = filteredProviders.IndexOf(dataContext);
+                if (index >= 0)
+                {
+                    _lastFocusedIndex = index;
+                }
+            }
+        }
+    }
+
+    private void ProvidersRepeater_GettingFocus(UIElement sender, GettingFocusEventArgs args)
+    {
+        if (viewModel is null || ProvidersRepeater is null)
+        {
+            return;
+        }
+
+        // Only intervene when focus is coming into the ItemsRepeater from outside
+        if (args.OldFocusedElement != null && IsElementInsideRepeater(args.OldFocusedElement))
+        {
+            return;
+        }
+
+        var filteredProviders = viewModel.Extensions.FilteredProviders;
+
+        if (filteredProviders.Count == 0)
+        {
+            return;
+        }
+
+        // Get the last focused index, defaulting to 0
+        var index = _lastFocusedIndex;
+        if (index < 0 || index >= filteredProviders.Count)
+        {
+            index = 0;
+        }
+
+        // Try to get the card at the saved index
+        var targetCard = ProvidersRepeater.TryGetElement(index) as SettingsCard;
+
+        if (targetCard != null)
+        {
+            // Use TrySetNewFocusedElement instead of canceling and deferring
+            args.TrySetNewFocusedElement(targetCard);
+            args.Handled = true;
+        }
+    }
+
+    private bool IsElementInsideRepeater(object element)
+    {
+        if (element is not DependencyObject depObj)
+        {
+            return false;
+        }
+
+        var parent = depObj;
+        while (parent != null)
+        {
+            if (ReferenceEquals(parent, ProvidersRepeater))
+            {
+                return true;
+            }
+
+            parent = Microsoft.UI.Xaml.Media.VisualTreeHelper.GetParent(parent);
+        }
+
+        return false;
+    }
 }