inbuxa-server renames the identifiers that carried the upstream name
(its SPEC.md §2.4): upstream's JMAP capability for the registry (x:)
objects is urn:inbuxa:jmap:registry, beside the fork's own urn:inbuxa:jmap,
and the web interface it serves signs in as inbuxa-webui. There are no
aliases, so this lands with the server change and deploys with it.