Settings → Account names the latest sign-in on any device (only the
admin's user list did, though the 0.88 notes said otherwise), and the role
in the reader's language instead of the raw `user`.
users.last_login_at (migration 0085, no backfill) is stamped by _establish_session,
which the Google callback now shares with password login instead of repeating its
session setup inline. The demo entry does not stamp its shared account. The admin
user list carries the field.
peter