modify streamlit_app.py

src/streamlit_app.py

@@ -167,10 +167,21 @@ def build_agent():
     return agent
 
 
-def run_agent(agent: FunctionAgent, prompt: str) -> str:
-    """Run the agent synchronously inside Streamlit."""
+async def _arun_agent(agent: FunctionAgent, prompt: str) -> str:
+    """Await the agent workflow and return the stringified response."""
     handler = agent.run(prompt)
-    return str(asyncio.run(handler))
+    return str(await handler)
+
+
+def run_agent(agent: FunctionAgent, prompt: str) -> str:
+    """Run the agent from Streamlit, whether or not an event loop is already running."""
+    try:
+        loop = asyncio.get_running_loop()
+    except RuntimeError:
+        return asyncio.run(_arun_agent(agent, prompt))
+    else:
+        return loop.run_until_complete(_arun_agent(agent, prompt))
+
 
 
 def _require_env(var_name: str) -> bool: