feat(bbb): log run params, metrics, and parquet artifact to MLflow

refactor(bbb): align pin_threads() comment with EEG/MRI sibling files

refactor(bbb): use core.determinism + core.storage helpers

refactor: pin single-threaded determinism env; close Day-2 doc/typo gaps

docs(bbb): fix stale CSV mentions in run_pipeline + module docstrings

feat(bbb): switch processed output to Parquet for dtype preservation

refactor(bbb): pin LF lineterminator; move DEFAULTs to top; reject dir output

feat(bbb): add run_pipeline orchestrator + CLI entrypoint with idempotent writes

fix(bbb): guard empty input; truncate index log; add KeyError + log tests

feat(bbb): expand SMILES → Morgan FP into model-ready DataFrame with drift logging

refactor(bbb): migrate to MorganGenerator API; consolidate test imports

feat(bbb): add Morgan fingerprint extraction with shape/dtype guarantees

refactor(bbb): tighten is_valid_smiles signature; document RDLogger global effect

feat(bbb): add SMILES validity guard with RDKit + test fixture