`endingSoonestFirst` holds every unstarted event behind every running
one. That is right for a checklist — you cannot do a thing that has not
opened — and it is one answer of two for a board, which is asked what
runs out first. An event opening on Friday and closing on Sunday is a
nearer deadline than one running now until October, and that order can
never show it.
So `byDeadline` is the same comparator with that clause removed, and
`timelineLanes` takes a `split` flag choosing between them. It defaults
to the old behaviour, so nothing moves yet.
The flag is also the one case where lane mode reorders inside a lane,
which the module otherwise refuses to do. Deliberate: the given order is
live-first whatever the reader chose in the list, so honouring it would
draw exactly the block this was asked not to draw.
Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
