Update llm.py

llm.py

@@ -3,12 +3,13 @@ from langchain_openai import ChatOpenAI
 
 def get_llm():
     return ChatOpenAI(
-        model=os.getenv(
-            "OPENROUTER_MODEL",
-            "meta-llama/llama-3-8b-instruct"
-        ),
+        model="meta-llama/llama-3-8b-instruct",
         api_key=os.getenv("OPENROUTER_API_KEY"),
         base_url="https://openrouter.ai/api/v1",
+        default_headers={
+            "HTTP-Referer": "https://huggingface.co",
+            "X-Title": "Taskify AI"
+        },
         temperature=0.4,
         max_tokens=700
     )