Fix Gradio compatibility issues

- Remove type='messages' from Chatbot component
- Use Gradio 4.19.2 which is stable with Python 3.10
- Add simple test app for debugging
- Simplify requirements

app_simple.py

@@ -0,0 +1,23 @@
+"""
+Simple Gradio app for HuggingFace Spaces
+"""
+import gradio as gr
+import os
+import sys
+
+# Add py directory to path
+sys.path.insert(0, os.path.join(os.path.dirname(__file__), 'py'))
+
+def chat(message, history):
+    """Simple echo function for testing"""
+    return f"Echo: {message}"
+
+# Create simple interface
+demo = gr.ChatInterface(
+    fn=chat,
+    title="AI Assistant Multi-Agent System",
+    description="A multi-agent conversational AI system (simplified for testing)"
+)
+
+if __name__ == "__main__":
+    demo.launch()

py/frontend/gradio_app.py

@@ -552,8 +552,7 @@ class PeerToPeerApp:
                         height=500,
                         show_label=False,
                         elem_id="chatbot",
-                        bubble_full_width=False,
-                        type="messages"
+                        bubble_full_width=False
                     )
                     
                     msg = gr.Textbox(

requirements.txt

@@ -1,9 +1,9 @@
 # Core dependencies
+gradio==4.19.2
 openai
-gradio
 tiktoken
 
-# LangChain (without ChromaDB)
+# LangChain
 langchain
 langchain-openai
 langchain-community
@@ -13,14 +13,7 @@ numpy
 
 # Utilities
 python-dotenv
-packaging
-tqdm
-PyYAML
 pydantic
 pydantic-settings
 SQLAlchemy
-
-# Development dependencies (optional)
-# pytest
-# black
-# pylint
+PyYAML