added main part

app.py

@@ -307,4 +307,46 @@ def create_interface():
     }
     """
     
-    return demo
+    return demo
+
+
+if __name__ == "__main__":
+    try:
+        log_message("🚀 Starting AIEXP - AI Expert for Regulatory Documentation")
+        
+        # Initialize LLM
+        llm = GoogleGenAI(model="gemini-2.0-flash", api_key=GOOGLE_API_KEY)
+        Settings.llm = llm
+        
+        # Initialize system
+        query_engine, chunks_df, success = initialize_system()
+        
+        log_message("🌟 Starting web interface...")
+        demo = create_interface()
+        
+        # Launch regardless of initialization success
+        demo.launch(
+            server_name="0.0.0.0",
+            server_port=7860,
+            share=True,
+            debug=False,
+            show_error=True
+        )
+        
+    except Exception as e:
+        log_message(f"❌ Startup error: {str(e)}")
+        # Create minimal interface even if there's an error
+        import gradio as gr
+        
+        def error_interface():
+            with gr.Blocks() as demo:
+                gr.Markdown(f"# Error: {str(e)}")
+                gr.Markdown("Please check your configuration and try again.")
+            return demo
+        
+        error_demo = error_interface()
+        error_demo.launch(
+            server_name="0.0.0.0",
+            server_port=7860,
+            share=True
+        )