fix: convert f-strings in find_model_files to .format()

artifact_comfyui_download.sh

@@ -323,11 +323,11 @@ filename_filter = sys.argv[3]
 # Try both with and without 'hub/' subdirectory for compatibility
 cache_path = Path(cache_dir)
 repo_path = repo_id.replace('/', '--')
-model_dir = cache_path / f'models--{repo_path}'
+model_dir = cache_path / 'models--{0}'.format(repo_path)
 
 # Fallback to hub/ subdirectory if direct path doesn't exist
 if not model_dir.exists():
-    model_dir = cache_path / 'hub' / f'models--{repo_path}'
+    model_dir = cache_path / 'hub' / 'models--{0}'.format(repo_path)
 
 if not model_dir.exists():
     sys.exit(1)