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/IAppRegistrationService.cs

@@ -9,23 +9,25 @@ public interface IAppRegistrationService
 {
     /// <summary>
     /// Returns true if the currently-authenticated user has the Global Administrator
-    /// directory role (checked via transitiveMemberOf for nested-group coverage).
-    /// Returns false on any failure, including 403, rather than throwing.
+    /// directory role in the target tenant (checked via transitiveMemberOf for
+    /// nested-group coverage). Throws on Graph/network failure so the UI can
+    /// distinguish a confirmed non-admin from a call that could not complete.
     /// </summary>
-    Task<bool> IsGlobalAdminAsync(string clientId, CancellationToken ct);
+    Task<bool> IsGlobalAdminAsync(string clientId, string tenantUrl, CancellationToken ct);
 
     /// <summary>
     /// Creates an Azure AD Application + ServicePrincipal + OAuth2PermissionGrants
-    /// atomically. On any intermediate failure the Application is deleted before
-    /// returning a Failure result (best-effort rollback).
+    /// atomically in the tenant identified by <paramref name="tenantUrl"/>.
+    /// On any intermediate failure the Application is deleted before returning
+    /// a Failure result (best-effort rollback).
     /// </summary>
-    Task<AppRegistrationResult> RegisterAsync(string clientId, string tenantDisplayName, CancellationToken ct);
+    Task<AppRegistrationResult> RegisterAsync(string clientId, string tenantUrl, string tenantDisplayName, CancellationToken ct);
 
     /// <summary>
-    /// Deletes the registered application by its appId.
+    /// Deletes the registered application by its appId in the given tenant.
     /// Logs a warning on failure but does not throw.
     /// </summary>
-    Task RemoveAsync(string clientId, string appId, CancellationToken ct);
+    Task RemoveAsync(string clientId, string tenantUrl, string appId, CancellationToken ct);
 
     /// <summary>
     /// Clears the live SessionManager context, evicts all in-memory MSAL accounts,