The Workout tab kept showing the last-used program (with its old
completion) regardless of the weekly schedule, so a rest day still
displayed a stale, fully-checked workout.
- On a new day, the active program now follows the weekly schedule
(applyScheduledProgramForToday in resetSetsForNewDayIfNeeded).
- Add isRestDayToday + a Rest Day card shown when today has no scheduled
program, with a "Work out anyway" override. Header reads "Rest Day".
- Daily set reset (KC-1) unchanged — no day starts pre-checked.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>