Claimant Stamp Reassignment Mechanic

claimant_stamp_state is a scoped custody state. It records the source claimant row, current stamped holder, requested reassignment, protected absent holder or explicit absence, route debt after the choice, and future reader or route effect.

The mechanic should only enter from state pressure:

claimant_stamp_state:
  trigger_kind: state_pressure
  source_claimant_row: queue-row-17
  current_stamp_holder: archive-desk-copy
  requested_stamp_holder: sponsor-courier-copy
  protected_absent_holder_or_absence: future-reader-advocate
  reassignment_reason: notice-service-conflict
  state_after: scoped_proxy_stamp
  future_reader_or_route_effect: future-reader-can-contest-stamped-proxy

It must not trigger from fixed turn, day/week, raw stamp count, dashboard status, or lens-health state.

If another reader later spends this stamp state as proof, Claimant Stamp Afteruse Receipt owns the afteruse scope rather than letting a moved stamp become generic consent.