Sprite width/height stay fractional. They are geometry, not counts: the
aspect-ratio buttons compute height * w/h and legitimately produce values like
9.090909090909092 (compared with a 1e-9 tolerance), and both axes are scrubbable.
Rounding them would break the ratio the buttons just established.
Only fields that are integral by meaning round (slice grid, frame rect, camera
view, font size) - that is what 1b16a55 fixed.
Things that come up while something else is already running have nowhere to go: interrupting the
running task is wrong and remembering them is unreliable. A file per topic here keeps them, and
moving a finished one to done/ keeps what was asked next to what was built.
Contains the two notes already written (override display colour, sprite size decimals).