Review fixes for the silence-after setting.
Changing the alarm's silence-after now re-measures a ring in progress at
once, through AlarmEngine.onSilenceAfterChanged: past the new window it
closes as missed, inside it the backstop moves. onAutoSilence also re-arms
instead of closing a ring that is still inside the current window, so a
backstop armed for a shorter window cannot end a ring early.
A cycle the resolver closes as missed (a ring past its window, or a
snooze that never fired) now disables a one-shot alarm, as the engine's
own close does. A short window made that path much easier to reach, and
the alarm was being armed for the same time the next day.
A late snooze is kept for the window or ten minutes, whichever is longer,
so a short window never makes a promised snooze easier to lose than in v1.
A timer that has gone quiet stays quiet when the setting is raised: the
lapsed anchor moves back past the hard stop. The timer's heads-up is now
keyed to the session anchor rather than the window's end, so editing the
setting mid-ring no longer counts as a new session and alerts again.
A negative stored value now reads as the default instead of Never. The
picker offers a stored value that matches no choice, and the wake-lock
timeout is one shared constant.
Refs #17
makiolaj
1c323d5b4c