Fifth round of review fixes for the silence-after setting.
A ring whose start the clock has moved back behind is now re-anchored to
now, once, and stored. Before, the negative age lingered, and every later
re-measure gave the ring a fresh window. With that fixed, onAutoSilence
can safely re-arm again when the ring is still inside the window in
force, so a backstop queued behind a raised setting no longer ends the
ring early.
The timers' setting is now written through
TimerEngine.setTimerSilenceAfter, which records a session that has
already outrun the old window as lapsed, so raising the setting cannot
restart a timer that went quiet while no service pass was running. The
lapse rule and the lapsed anchor live in TimerRingPolicy, shared by the
policy and the engine.
Refs #17
makiolaj
1689794da6