disable retriver

gaia_agent.py

@@ -181,8 +181,9 @@ def build_graph(provider: str = "groq"):
     # builder.add_node("retriever", retriever)
     builder.add_node("assistant", assistant)
     builder.add_node("tools", ToolNode(tools))
-    builder.add_edge(START, "retriever")
+    # builder.add_edge(START, "retriever")
     # builder.add_edge("retriever", "assistant")
+    builder.add_edge(START, "assistant") ## if disable retriever
     builder.add_conditional_edges(
         "assistant",
         tools_condition,