A corner radius between the steps builds
Fixengine.py set radius.control 10 was recorded, but the tokens pointed at a 10 px step the scale did not have, so the next build stopped in all 12 mode combinations and nothing exported. The same happened for radius.container, radius.overlay and radius.detail. A radius between the steps now gets its own step on the scale (as raw.borderWidths does for border widths), and the small-control radius drops to the step below it (8 for 10). set and standard add refuse a value that cannot be a radius before anything is written, and name the steps: a negative or fractional number, another unit, or "full" for cards and dialogs ("full" stays for controls and tags; "10px" is stored as 10). icon.defaultSize takes only 16, 20 or 24; before, 19 was recorded and the tokens silently used 20. A bad radius recorded by an older version builds with the Roundness dial's value, and validate says so.