Seat Substitution Receipt Mechanics

A seat substitution review must expose the source row, original holder, substituted holder, authority or absence, proof or absence, harmed reader, requested future use, after-state, and future reader effect.

Valid outcomes move at least three named pressure surfaces: fan_trust, sponsor_pressure, venue_liability, archive_heat, refund_debt, or future_slot_integrity. A clean certification can protect schedule stability, but an unreceipted substitution creates a durable ledger scar that future audience, route, or sponsor readers can consume.

Later consumption is handled by Seat Substitution Afteruse Receipt, which requires the future reader to preserve source row, prior seat state, original and substituted holders, bridge, harmed reader, selected posture, after-state, and future effect before spending the substitution outside the first review.

The trigger is never a fixed turn, raw seat count, dashboard state, or lens-health state. It appears only when a concrete row and replacement claim are both visible.