Stage Door Replay Afteruse Receipt Mechanics

The mechanic opens from state pressure, not from a timer: a stored stage-door replay exists, a future reader or route tries to consume it, and the original signer/claimant boundary is uncertain.

Required state surfaces:

• source stage-door replay id and door state;
• replay signer or explicit absence;
• original replay scope and requested afteruse;
• future reader or route attempting consumption;
• harmed or omitted claimant;
• route asset state or explicit absence;
• proof bridge, selected posture, after-state, future effect, and counter deltas.

Valid resolution families are certify narrow scope, restrict the future reader, attach public/stage-door proof, reopen signer or claimant, split the afteruse, quarantine the replay, or accept a false-clean default with durable mutation.