Seat Substitution Review

The review is offered from trigger_kind: state_pressure, not a calendar or dashboard trigger. It requires a visible source row and a replacement holder claim.

Branch families:

• certify_authorized_substitution: accept a valid receipt and mark the future row clean.
• reseat_original_holder: restore the first holder and increase sponsor pressure.
• refund_harmed_reader: pay or debt-mark the displaced reader.
• split_seat_credit: divide benefit between holder and substitute with reduced stability.
• publish_seat_erratum: make the correction public and add archive heat.
• quarantine_substitution_claim: freeze the row until proof arrives.
• false_seat_substitution_default: let the false-clean claim stand as a future scar.
• future_effect_any: every branch names the later reader or route effect that consumes the decision.