Bump version to 1.0.3

- Suffix release tag support: folder name ending in -TAG
  prepends [TAG] to output filenames
- Show name injection from parent folder for episode-only
  filenames (e.g. S01E01-Name.mkv)
- Queue and logs display predicted output filename
- Run button label reflects rename when applicable
- Gray out main UI while strip/rename is in progress

MainWindow.xaml.cs

@@ -131,6 +131,15 @@ public partial class MainWindow : FluentWindow
         RunButton.ToolTip = allCorrect
             ? null
             : "Every file in the queue needs exactly one audio and one subtitle track selected before stripping.";
+
+        UpdateRunButtonLabel();
+    }
+
+    private void UpdateRunButtonLabel()
+    {
+        bool anyRename = _fileQueue.Any(f =>
+            !string.Equals(f.DisplayFileName, f.FileName, StringComparison.Ordinal));
+        RunButton.Content = anyRename ? "Rename and Strip Tracks" : "Strip Tracks";
     }
 
     private void QueuedFileItem_PropertyChanged(object? sender, PropertyChangedEventArgs e)
@@ -500,6 +509,7 @@ public partial class MainWindow : FluentWindow
         _isProcessing = true;
         RunButton.IsEnabled = false;
         StatusText.Text = string.Empty;
+        ProcessingOverlay.Visibility = Visibility.Visible;
 
         var progressWin = new ProgressWindow(readyFiles, _settings.MkvMergePath, _settings.OutputFolder, MaxConcurrentStrips)
         {
@@ -508,6 +518,7 @@ public partial class MainWindow : FluentWindow
         progressWin.Closed += (_, _) =>
         {
             _isProcessing = false;
+            ProcessingOverlay.Visibility = Visibility.Collapsed;
             if (progressWin.ShouldClearQueue)
             {
                 foreach (var item in _fileQueue)