Update agent.py

agent.py

@@ -692,7 +692,9 @@ def build_graph(provider: str = "huggingface"):
             llm=HuggingFaceEndpoint(
                 #repo_id="TinyLlama/TinyLlama-1.1B-Chat-v1.0",
                 #endpoint_url="https://api-inference.huggingface.co/models/Meta-DeepLearning/llama-2-7b-chat-hf",
-                endpoint_url="https://api-inference.huggingface.co/models/Qwen/Qwen3-4B",
+                #endpoint_url="https://api-inference.huggingface.co/models/Qwen/Qwen3-4B",
+                url="https://api-inference.huggingface.co/models/microsoft/phi-4",
+                
                 #task="text-generation",  # for chat‐style use “text-generation”
                 #max_new_tokens=1024,
                 #do_sample=False,