Scope: drop last 'representation' wording

Clean release: remove dashes; brand as ReLab engine; add sample-efficiency curve

Methods: cut redundant engine clause, keep baseline definition

Section title -> Result

Solid engine-capability framing; move rigor caveats internal

Tighten lead line; scrub engine-mechanism details from card

Add SQMolecular FCI/MP2 parquet (10,038 rows)

Add SQMolecular datacard

initial commit