Design 13's three logins, for a secret that had no owner before (novox/hq
ADR 0085): the delivered password authenticates against the real redis, the
one `rotate secret` delivers authenticates, and the one rotated away is
refused. Plus the owner's half: the vault's ledger names the holder and the
fingerprint, notices the rotation, and answers over the mesh by fingerprint,
never by value. Runs the catalogue's own manifests.
