On the desktop every column, in every row, is as high as the room from
the board to the bottom of the scroll area (at least about three cards),
so the first row fits on opening and further rows fill one screen; the
first row no longer grows when a column wraps into a second row. With
several rows one wheel step moves to the next row or back (own logic:
the browser's snapping returned to the nearest point and never got past
the first row). Card lists that can scroll go first; Ctrl + wheel over
the board scrolls freely without zooming.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>