Update README.md

SharepointToolbox/App.xaml.cs

@@ -34,6 +34,19 @@ public partial class App : Application
             .Build();
 
         host.Start();
+
+        // Apply persisted language before any UI is created so bindings resolve to the saved culture.
+        try
+        {
+            var settings = host.Services.GetRequiredService<SettingsService>().GetSettingsAsync().GetAwaiter().GetResult();
+            if (!string.IsNullOrWhiteSpace(settings.Lang))
+                Localization.TranslationSource.Instance.CurrentCulture = new System.Globalization.CultureInfo(settings.Lang);
+        }
+        catch (Exception ex)
+        {
+            Log.Warning(ex, "Failed to apply persisted language at startup");
+        }
+
         App app = new();
         app.InitializeComponent();