docs(status): the page tells tonight's truth, with SOUND as the gate

Five buckets: SET 100%, RIG 95%, SOUND 20% and flagged as the critical path,
STAGE 15%, REHEARSAL 40%. Six items carry a YOU badge because six of them are
PLN's hands and nothing else.

SOUND leads because it is the only thing that can silence the show: seven orbit
faders sit at -inf in the saved session, and Ardour's meters are post-fader so
that failure is indistinguishable from Tidal emitting nothing. The card says so
in one line rather than trusting anyone to remember it.

Every counter computes from the clock — a date-math suite asserts the header
and all three stops across day-before, day-of and day-after, including "gig
played" once it is behind us. Checked at 1440 and 420, and with localStorage
throwing: the page still renders, which is the only state a status page must
never fail in. New storage key, so ticks from the old move list cannot show as
done against new moves.