Busy, and critical+15 and +30 minutes by default
Six modes per kitchen: normal, busy, critical, paused, closing and offline.
Busy and critical each add a fixed prep buffer — fifteen minutes and thirty out of the box, editable per kitchen — and that buffer is written onto the promised ready time the order carries, not painted onto the estimate for show. Neither mode tells the customer why. There is no kitchen-load wording anywhere on the storefront, only a later time. Critical also switches express pickup off, because a promise of minutes is the one thing a drowning kitchen cannot keep.