add descriptions of files when invoking ListRegistryPaths with new ut…

…il function

mdagent/tools/base_tools/util_tools/registry_tools.py

@@ -57,7 +57,7 @@ def _run(self, paths: str) -> str:
         try:
             if self.path_registry is None:
                 return "Path registry not initialized"
-            return self.path_registry.list_path_names()
+            return self.path_registry.list_path_names_and_descriptions()
         except Exception:
             return "Error listing paths"