Update agent.py

agent.py

@@ -8,6 +8,8 @@ from langchain_groq import ChatGroq
 from langchain_core.tools import tool
 from langchain_core.messages import HumanMessage, SystemMessage
 from langchain_core.prompts import ChatPromptTemplate
+from langgraph.prebuilt import ToolNode
+from langgraph.prebuilt import tools_condition
 
 # 1. Web Browsing
 from langchain_community.tools import DuckDuckGoSearchResults