The board scrolled sideways without a handle, so a card that took
focus past the fold stayed out of sight, ring and all, and Option-Right
could send it into a column nobody saw. The board now tracks its
scroll, and a card that takes focus sets the offset through
layout::bring_into_view from its row's painted box, ring included, once
per focus and again when it lands in another column. The stepping
rules gain tests for left and right keeping a card's place and for the
end of a shorter column.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
ZacharyZhang-NYandClaude Opus 5.5
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