Expand description
Ergonomic glue between domain types and the LogContext requester slot.
Auth-resolution sites can call value.maybe_record_as_requester() on a
User, BrowserSession, Session, CompatSession or Client
instead of reaching for LogContext::maybe_set_requester + Requester
directly. Each call site should record the entity that authenticated the
request exactly once; LogContext is first-writer-wins, so an accidental
second call is harmless.