Deterministic protocol verification for cryptographically bounded proof-of-possession authority.
Protocol behavior is exposed only through the explicit
BoundedAuthorityProtocol.V1 namespace, including named public submodules such as
BoundedAuthorityProtocol.V1.Json and BoundedAuthorityProtocol.V1.Base64Url. There is no
implicit latest profile and no duplicate unversioned façade.