Update agent.py

agent.py

@@ -100,7 +100,7 @@ tools = [
 ]
 
 
-def build_graph(provider: str):
+def build_graph(provider: str = "huggingface"):
     if provider == "google":
         # Google Gemini
         llm = ChatGoogleGenerativeAI(model="gemini-2.0-flash", temperature=0,api_key=google_api_key)