Update valid_data with regenerated dataset_config.yaml and processed_data_shard0.pkl

Clean up valid_data/dataset_config.yaml: remove internal meta_fp and use relative save_dir

Add ByteFF-GNN and ByteFF-Pol v2; keep legacy v1 at trained_models/, valid_data/

update license

add valid_data

remove init file

add __init__ file

update readme

delete .pt file

delete yaml file

update readme

Upload folder using huggingface_hub

initial commit