The guard that holds back a membership losing anything held back five since 01:24: the frozen
controller's memberships still serve the delivery seat's mark-ready, which mesh-sdk d506f21
retired on purpose (ADR 0421), so every membership composed with today's seat catalogue looked
like a loss. A seat verb the catalogue defines no longer is now dropped from the comparison and
named in the pass (retired); any other loss, a module's own seat's verbs included, is still
refused. The log named only the first held membership: it now says each one, with what it would
lose, whenever the set changes, and grants_membership with neither node nor module lists them.
Issue: 1945