The floor was described on the one route that cannot reach it and left unsaid
on the two that answer it every time: withdrawing the last Guardian grant and
renouncing it both raise `managed_profile.guardian.required`, and both
published only 'that access had already ended'. Both 409s now name their two
codes, and the annotation on the removal route enumerates all four emitters
rather than three.
A guard closes the class rather than the instance: every route module that
raises the refusal must publish it on its own operation, with the emitters
discovered from the sources.
The freeze guard gains its containment leg — a module becomes delegable by
review, not by discovery, so every file contributing a fenced verb has to be a
member of one of the surface guard's frozen allowlists.
- publish the roster's entry from the invitation and `{ grantId, revokedAt }`
from the removal, instead of the account-grant row Prisma returned
- drop the invitation's self refusal: it named a code no request can elicit,
because a Guardian grant's grantor is the profile and never the caller
- name the duplicate grant error rather than catching every grant refusal into
a sentence that would be wrong for any other one
- keep the rate limit and the unknown-identifier 404 free of an error code,
as their siblings elsewhere are, and say why at the call site
Marc-André Bombeck