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/Services/SiteListService.cs

@@ -69,7 +69,12 @@ public class SiteListService : ISiteListService
                 if (s.Status == "Active"
                     && !s.Url.Contains("-my.sharepoint.com", StringComparison.OrdinalIgnoreCase))
                 {
-                    results.Add(new SiteInfo(s.Url, s.Title));
+                    results.Add(new SiteInfo(s.Url, s.Title)
+                    {
+                        StorageUsedMb = s.StorageUsage,
+                        StorageQuotaMb = s.StorageMaximumLevel,
+                        Template = s.Template ?? string.Empty
+                    });
                 }
             }
         }