fix: correct HuggingFace cache path detection

- Check for models in cache_dir/models--xxx--yyy/ first
- Fallback to cache_dir/hub/models--xxx--yyy/ for compatibility
- Fixes issue where script couldn't find downloaded models

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

artifact_comfyui_download.sh

@@ -307,11 +307,16 @@ cache_dir = '${CACHE_DIR}'
 repo_id = '${repo_id}'
 filename_filter = '${filename_filter}'
 
-# HuggingFace cache structure: cache_dir/hub/models--org--name/snapshots/hash/
-cache_path = Path(cache_dir) / 'hub'
+# HuggingFace cache structure: cache_dir/models--org--name/snapshots/hash/
+# 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}'
 
+# Fallback to hub/ subdirectory if direct path doesn't exist
+if not model_dir.exists():
+    model_dir = cache_path / 'hub' / f'models--{repo_path}'
+
 if not model_dir.exists():
     sys.exit(1)