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/Core/Models/TransferJob.cs

@@ -10,4 +10,24 @@ public class TransferJob
     public string DestinationFolderPath { get; set; } = string.Empty;
     public TransferMode Mode { get; set; } = TransferMode.Copy;
     public ConflictPolicy ConflictPolicy { get; set; } = ConflictPolicy.Skip;
+
+    /// <summary>
+    /// Optional library-relative file paths. When non-empty, only these files
+    /// are transferred; SourceFolderPath recursive enumeration is skipped.
+    /// </summary>
+    public IReadOnlyList<string> SelectedFilePaths { get; set; } = Array.Empty<string>();
+
+    /// <summary>
+    /// When true, recreate the source folder name under the destination folder
+    /// (dest/srcFolderName/... ). When false, the source folder's contents land
+    /// directly inside the destination folder.
+    /// </summary>
+    public bool IncludeSourceFolder { get; set; }
+
+    /// <summary>
+    /// When true (default), transfer the files inside the source folder.
+    /// When false, only create the folder structure (useful together with
+    /// <see cref="IncludeSourceFolder"/> to clone an empty scaffold).
+    /// </summary>
+    public bool CopyFolderContents { get; set; } = true;
 }