chore: release v2.4

- Add theme system (Dark/Light palettes, ModernTheme, ThemeManager)
- Add InputDialog, Spinner common view
- Add DuplicatesCsvExportService
- Refresh views, dialogs, and view models across tabs
- Update localization strings (en/fr)
- Tweak services (transfer, permissions, search, user access, ownership elevation, bulk operations)

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

SharepointToolbox/ViewModels/Tabs/TransferViewModel.cs

@@ -15,6 +15,8 @@ public partial class TransferViewModel : FeatureViewModelBase
     private readonly IFileTransferService _transferService;
     private readonly ISessionManager _sessionManager;
     private readonly BulkResultCsvExportService _exportService;
+    private readonly IOwnershipElevationService? _ownershipService;
+    private readonly SettingsService? _settingsService;
     private readonly ILogger<FeatureViewModelBase> _logger;
     private TenantProfile? _currentProfile;
     private bool _hasLocalSourceSiteOverride;
@@ -32,6 +34,17 @@ public partial class TransferViewModel : FeatureViewModelBase
     // Transfer options
     [ObservableProperty] private TransferMode _transferMode = TransferMode.Copy;
     [ObservableProperty] private ConflictPolicy _conflictPolicy = ConflictPolicy.Skip;
+    [ObservableProperty] private bool _includeSourceFolder;
+    [ObservableProperty] private bool _copyFolderContents = true;
+
+    /// <summary>
+    /// Library-relative file paths the user checked in the source picker.
+    /// When non-empty, only these files are transferred — folder recursion is skipped.
+    /// </summary>
+    public List<string> SelectedFilePaths { get; } = new();
+
+    /// <summary>Count of per-file selections, for display in the view.</summary>
+    public int SelectedFileCount => SelectedFilePaths.Count;
 
     // Results
     [ObservableProperty] private string _resultSummary = string.Empty;
@@ -51,12 +64,16 @@ public partial class TransferViewModel : FeatureViewModelBase
         IFileTransferService transferService,
         ISessionManager sessionManager,
         BulkResultCsvExportService exportService,
-        ILogger<FeatureViewModelBase> logger)
+        ILogger<FeatureViewModelBase> logger,
+        IOwnershipElevationService? ownershipService = null,
+        SettingsService? settingsService = null)
         : base(logger)
     {
         _transferService = transferService;
         _sessionManager = sessionManager;
         _exportService = exportService;
+        _ownershipService = ownershipService;
+        _settingsService = settingsService;
         _logger = logger;
 
         ExportFailedCommand = new AsyncRelayCommand(ExportFailedAsync, () => HasFailures);
@@ -108,6 +125,9 @@ public partial class TransferViewModel : FeatureViewModelBase
             DestinationFolderPath = DestFolderPath,
             Mode = TransferMode,
             ConflictPolicy = ConflictPolicy,
+            SelectedFilePaths = SelectedFilePaths.ToList(),
+            IncludeSourceFolder = IncludeSourceFolder,
+            CopyFolderContents = CopyFolderContents,
         };
 
         // Build per-site profiles so SessionManager can resolve contexts
@@ -127,7 +147,33 @@ public partial class TransferViewModel : FeatureViewModelBase
         var srcCtx = await _sessionManager.GetOrCreateContextAsync(srcProfile, ct);
         var dstCtx = await _sessionManager.GetOrCreateContextAsync(dstProfile, ct);
 
-        _lastResult = await _transferService.TransferAsync(srcCtx, dstCtx, job, progress, ct);
+        var autoOwnership = await IsAutoTakeOwnershipEnabled();
+
+        try
+        {
+            _lastResult = await _transferService.TransferAsync(srcCtx, dstCtx, job, progress, ct);
+        }
+        catch (Microsoft.SharePoint.Client.ServerUnauthorizedAccessException ex)
+            when (_ownershipService != null && autoOwnership)
+        {
+            _logger.LogWarning(ex, "Transfer hit access denied — auto-elevating on source and destination.");
+            var adminUrl = DeriveAdminUrl(_currentProfile.TenantUrl ?? SourceSiteUrl);
+            var adminProfile = new TenantProfile
+            {
+                Name = _currentProfile.Name,
+                TenantUrl = adminUrl,
+                ClientId = _currentProfile.ClientId,
+            };
+            var adminCtx = await _sessionManager.GetOrCreateContextAsync(adminProfile, ct);
+
+            await _ownershipService.ElevateAsync(adminCtx, SourceSiteUrl, string.Empty, ct);
+            await _ownershipService.ElevateAsync(adminCtx, DestSiteUrl, string.Empty, ct);
+
+            // Retry with fresh contexts so the new admin membership is honoured.
+            srcCtx = await _sessionManager.GetOrCreateContextAsync(srcProfile, ct);
+            dstCtx = await _sessionManager.GetOrCreateContextAsync(dstProfile, ct);
+            _lastResult = await _transferService.TransferAsync(srcCtx, dstCtx, job, progress, ct);
+        }
 
         // Update UI on dispatcher
         await Application.Current.Dispatcher.InvokeAsync(() =>
@@ -182,6 +228,34 @@ public partial class TransferViewModel : FeatureViewModelBase
         DestFolderPath = string.Empty;
         ResultSummary = string.Empty;
         HasFailures = false;
+        SelectedFilePaths.Clear();
+        OnPropertyChanged(nameof(SelectedFileCount));
         _lastResult = null;
     }
+
+    /// <summary>Replaces the current per-file selection and notifies the view.</summary>
+    public void SetSelectedFiles(IEnumerable<string> libraryRelativePaths)
+    {
+        SelectedFilePaths.Clear();
+        SelectedFilePaths.AddRange(libraryRelativePaths);
+        OnPropertyChanged(nameof(SelectedFileCount));
+    }
+
+    private async Task<bool> IsAutoTakeOwnershipEnabled()
+    {
+        if (_settingsService == null) return false;
+        var settings = await _settingsService.GetSettingsAsync();
+        return settings.AutoTakeOwnership;
+    }
+
+    internal static string DeriveAdminUrl(string tenantUrl)
+    {
+        var uri = new Uri(tenantUrl.TrimEnd('/'));
+        var host = uri.Host;
+        if (host.Contains("-admin.sharepoint.com", StringComparison.OrdinalIgnoreCase))
+            return tenantUrl;
+        var adminHost = host.Replace(".sharepoint.com", "-admin.sharepoint.com",
+            StringComparison.OrdinalIgnoreCase);
+        return $"{uri.Scheme}://{adminHost}";
+    }
 }