trackShape moves the two drawing measurements into src so the sweep, the pool
build, the selector and the gallery share one definition. They are one property
seen twice: a chord joining opposite ports is a straight line, and two of those
in a cell always cross, which is why the filler that paired leftovers straight
across produced a board that is both all-straight and all-crossings.
Crossings per cell is now a gate at 1.0. Bending the leftover ports alone takes
the median from 2.36 to 0.93, so the gate costs a third of the candidates rather
than most of them, and it is the difference the boards were described by.
Selection gains --plan, an ordered list of segments each naming how many levels
it wants and of what kind. Depth quotas cannot express the shape this campaign
needs, because the two good things pull against each other: a crowded board
clears beautifully and caps at three turns, while a deep lock needs room and so
stays sparse — at five turns and eight pieces per orientation, 16 of 18
candidates fail the release gate. Sorting by depth would file every crowded
level first and every deep one last; segments alternate them deliberately, and a
plan is left in the order it was written rather than re-sorted.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
