Batch TCIA commits with shared rate-limit retry

Batch LUNA16 commits and retry explicit rate limits

Update collection metadata and safe collectors

Remove generated scripts/__pycache__/tcia_collect_upload.cpython-313.pyc

Remove generated scripts/__pycache__/luna16_collect_upload.cpython-313.pyc

Remove generated scripts/__pycache__/init_hf_dataset_repo.cpython-313.pyc

Add collection and upload scripts