Fix Gradio ChatInterface compatibility for Hugging Face deployment

- Removed unsupported ChatInterface parameters (retry_btn, undo_btn, clear_btn, submit_btn, stop_btn)
- These parameters are not available in the Gradio version used on Hugging Face
- Application now uses basic ChatInterface parameters for better compatibility
- All UI enhancements and functionality remain intact
- Fixes runtime error: TypeError: ChatInterface.__init__() got an unexpected keyword argument

app.py

@@ -272,13 +272,7 @@ with gr.Blocks(
                         "What led to the fall of the Roman Empire?"
                     ],
                     title="",
-                    description="",
-                    retry_btn="🔄 Retry",
-                    undo_btn="↩️ Undo",
-                    clear_btn="🗑️ Clear",
-                    submit_btn="📤 Send",
-                    stop_btn="⏹️ Stop",
-                    css=".chat-container"
+                    description=""
                 )
         
         # Enhanced Control Panel