fixed tokenization issue for long files

app/MindWork AI Studio/Tools/ContentStreamSseHandler.cs

@@ -44,6 +44,14 @@ public static class ContentStreamSseHandler
                         return sseEvent.Content;
 
                     case ContentStreamPresentationMetadata presentationMetadata:
+                        if (!extractImages)
+                        {
+                            var slideNumber = presentationMetadata.Presentation?.SlideNumber ?? 0;
+                            return slideNumber > 0
+                                ? $"# Slide {slideNumber}\n{sseEvent.Content}"
+                                : sseEvent.Content;
+                        }
+
                         var slideManager = SLIDE_MANAGERS.GetOrAdd(
                             sseEvent.StreamId!,
                             _ => new()
@@ -131,4 +139,4 @@ public static class ContentStreamSseHandler
         
         return finalContentChunk.Length > 0 ? finalContentChunk.ToString() : null;
     }
-}
+}