Prop Room Key Ring Afteruse Receipt Mechanics

The review opens from state pressure, not a fixed turn. It requires a docket, lock map or explicit absence, sign-out sheet, missing-key tag, future reader, and a selected posture. Branches must change named counters and future route flags: lock scope, sign-out consent, reopened missing-key trace, split custody clearance, quarantine, or recovery-only default.

The false default is intentionally durable: it records a false master-key posture, increases custody/access heat, and forces future routes to cite recovery evidence before the key ring can be reused.