Update User-Agent format in get_user_agent function to use 'eval-protocol' prefix

Author: Dylan Huang

eval_protocol/common_utils.py

@@ -8,17 +8,18 @@
 def get_user_agent() -> str:
     """
     Returns the user-agent string for eval-protocol CLI requests.
-    
+
     Format: eval-protocol-cli/{version}
-    
+
     Returns:
         User-agent string identifying the eval-protocol CLI and version.
     """
     try:
         from . import __version__
-        return f"eval-protocol-cli/{__version__}"
+
+        return f"eval-protocol/{__version__}"
     except Exception:
-        return "eval-protocol-cli/unknown"
+        return "eval-protocol/unknown"
 
 
 def load_jsonl(file_path: str) -> List[Dict[str, Any]]: