A sovereign single-file build: it runs from this one file, works offline, and sends nothing anywhere.
Everything typed here is saved on this machine, in this browser, and nowhere else.
A count that keeps. Name it, press the button, own the number.
A crease-pattern glyph — golden-angle ring, mountain and valley alternating, and the center stays a hole the whole way: a twist fold has no apex. Drag it between flat and folded.