Re-measured the work counters at a888717 (unchanged from adbedaf), and
tested the handoff's claim about a positive span pinning `far`: without the
pin, seed 1's resize goes from 44 draws of 13 widgets to 20 of 9. The pin is
worth removing, and what stops a sound removal is that no `Part` can say
"from the cursor to the end of the box" without naming the box's length.