connect retrivers into langgraph

Alfred_Agent.py

@@ -93,10 +93,12 @@ builder = StateGraph(AgentState)
 
 # Define nodes: these do the work
 builder.add_node("assistant", assistant)
+builder.add_node("retriever", retriever)
 builder.add_node("tools", ToolNode(tools))
 
 # Define edges: these determine how the control flow moves
-builder.add_edge(START, "assistant")
+builder.add_edge(START, "retriever")
+builder.add_edge("retriever", "assistant")
 builder.add_conditional_edges(
     "assistant",
     # If the latest message requires a tool, route to tools