Both hosts start at night-mode brightness and only brighten once the
settings say so, and the screen stays black until the settings and the
appearance are both read, so a dark room is never lit by a loading frame.
The on-demand screen saver lets the phone lock on its usual timeout and
stays up over the lock screen, so a phone left charging is not left
unlocked. The digital readout takes 70% of the shorter side, leaving
room to drift across it.
The next alarm is one localized date-time skeleton instead of a
hand-joined day and time, the date uses floret's localizedDateFormatter,
and the 12/24-hour pattern is shared with rememberLocalTimeFormatter.