fix(i18n): live-refresh smart/virtual list names on language change

Smart-list nav labels were localized only at load; subscribe the singleton
ListsIslandViewModel to language changes and re-localize names in place.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

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

@@ -162,6 +162,26 @@ public sealed partial class ListsIslandViewModel : ViewModelBase
             _worker.WorktreeUpdatedEvent += _id                        => _ = RefreshCountsAsync();
             _worker.ConnectionRestoredEvent += ()                      => _ = RefreshCountsAsync();
         }
+
+        Loc.LanguageChanged += (_, _) => RefreshLocalizedLabels();
+    }
+
+    private static string? SmartListNameKey(string id) => id switch
+    {
+        "smart:my-day"    => "vm.lists.smartMyDay",
+        "smart:important" => "vm.lists.smartImportant",
+        "smart:planned"   => "vm.lists.smartPlanned",
+        "virtual:queued"  => "vm.lists.virtualQueue",
+        "virtual:running" => "vm.lists.virtualRunning",
+        "virtual:review"  => "vm.lists.virtualReview",
+        _                 => null,
+    };
+
+    private void RefreshLocalizedLabels()
+    {
+        foreach (var item in SmartLists)
+            if (SmartListNameKey(item.Id) is { } key) item.Name = Loc.T(key);
+        OnPropertyChanged(nameof(MachineNameLocal));
     }
 
     public async Task LoadAsync(CancellationToken ct = default)