Reviewer curates, per promoted table, which columns to use over the full catalog list (suggested pre-selected + bold); selection persists into schema_linking.json + the decision ledger and softly guides SQL generation (Option 1). Dedicated structured schema-linking gate widget (Approach A), staged commit, inline gate + single columns modal. Hard SQL enforcement is an explicit follow-up. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>