Gradio launch improvements

Limited gradio concurrency.

app.py

@@ -114,4 +114,12 @@ agent = CodeAgent(
 )
 
 
-GradioUI(agent).launch()
+if __name__ == "__main__":
+    ui = GradioUI(agent)
+    ui.launch(
+        server_port=7860,
+        share=True,
+        enable_queue=True,
+        max_threads=1,
+        concurrency_count=1
+    )