Small follow-ups on top of #19643:
- check_auth() takes quiet kwarg to suppress its AUTHENTICATED print
when called from check_auth_live(), so the final status line reflects
the live-call outcome only.
- Drop redundant _ensure_deps() call in check_auth_live() (check_auth()
already calls it).
- Add AUTHOR_MAP entry for ygd58 so release attribution script works.