Update app.py

app.py

@@ -677,7 +677,7 @@ Example: 'Received {total_slides} slides, {total_slides} scripts, and HTML files
                 logger.info("Handoff from %s to %s", source, message.target)
                 if source == "research_agent" and message.target == "slide_agent":
                     progress = 25
-                    label = "Generating Slides..."
+                    label = "Generating Lecture Slides..."
                     if hasattr(message, 'content'):
                         add_stage_output("Research", message.content, "Task Completed")
                     # Remove duplicate Slides stage output