Update app.py

app.py

@@ -22,10 +22,14 @@ class BasicAgent:
         self.graph = agent_graph
     def __call__(self, question: str) -> str:
         print(f"Agent received question (first 50 chars): {question[:50]}...")
-        # Create conversation history with system prompt
-        messages = [SystemMessage(content=system_prompt), 
-                    HumanMessage(content=question)]
-        
+        # Create initial state with system prompt
+        initial_state = {
+            "messages": [
+                SystemMessage(content=system_prompt),
+                HumanMessage(content=question)
+            ]
+        }
+    
         # Run the graph
         response = self.graph.invoke({"messages": messages})