check_http_proof is authorize()'s proof step as a function (live-rooms §10.5.3, §10.5.4).
room_corpus runs the corpus's six HTTP proofs through it with the gateway's own reading of
each grant, and presents each accepted proof again as a replay. auth_and_ice presents
grants with proofs through the Auth helper, and shows the session's PATCH and DELETE
refusing a grant presented alone.
Co-Authored-By: Claude Opus 5.5 <[email protected]>