Add duty_time_range dictionary with day/night presets, parse typed ranges on ensure, and replace time pickers with allow-create select in the schedule dialog.
Co-authored-by: Cursor <cursoragent@cursor.com>
Map invalid HH:mm to DutyBizError, serialize workPlans/timeLabel from dict,
ensure dict items on save, and allow custom shift types on public grab.
Co-authored-by: Cursor <cursoragent@cursor.com>
