Drag a piece, or just click it: it sticks to the pointer, and the next click puts it down.
Drop it next to the one it belongs beside and it clicks in.
Joined pieces travel together, so whole slabs move at once.
The table never moves. All of it is on screen, always.
Ghost fades the finished picture into the frame. Tip out scatters this cut again.
G toggles the ghost, Esc puts down a carried piece.
The plate is painted from the date, not fetched — everyone gets the same
picture, and all four cuts are cut from it. Each cut keeps its own
progress, so 1000 can sit half-finished while you take a run at 100.
New plate at midnight UTC.