One card
You do not open a list. The next task stays out of sight until this one is gone.
The rules
Midnight
Unfinished work expires. Nothing rolls over, and nothing is marked overdue.
Quash it
The swipe is the whole action. Clear the card, feel it go, stop.
Not yet
The swipe is not on this page yet. When it is, swiping stays free. Anything extra will be priced in pounds.