chore(claude-do): [A3] Settings + Update-Check: OperationStatus für Skill-Inst

Vorgaben: `docs/superpowers/plans/2026-08-11-operation-feedback.md`, Gruppe A, Entwurf A3. P0-1 ist gemergt: `src/ClaudeDo.Ui/Services/OperationStatus.cs` + `src/ClaudeDo.Ui/Views/Controls/OperationIndicator.axaml`.

SCOPE-ÄNDERUNG (Nutzer, 2026-08-12): OnlineInbox Sign-In/Sign-Out ist AUS DEM SCOPE GENOMMEN — vorerst unwichtig. `ViewModels/Modals/Settings/OnlineInboxSettingsViewModel.cs` und die

ClaudeDo-Task: 2356806f-f16e-4652-b615-4562e95c3a65

src/ClaudeDo.Ui/ViewModels/Modals/RepoImportModalViewModel.cs

@@ -33,6 +33,8 @@ public sealed partial class RepoImportModalViewModel : ViewModelBase
     private readonly HashSet<string> _existingDirs = new(StringComparer.OrdinalIgnoreCase);
     private readonly List<string> _folders = new();
 
+    public OperationStatus ScanOp { get; } = new();
+
     public ObservableCollection<RepoImportItemViewModel> Repos { get; } = new();
 
     public Action? CloseAction { get; set; }
@@ -96,6 +98,7 @@ public sealed partial class RepoImportModalViewModel : ViewModelBase
 
     private async Task ScanAndAddAsync(IEnumerable<string> folders)
     {
+        using var op = ScanOp.Begin(Loc.T("ops.repoImport.scanning"));
         var current = new HashSet<string>(
             Repos.Select(r => r.FullPath), StringComparer.OrdinalIgnoreCase);