prompt: tighten notepat button width + add stacked-mode spacing
TextButtonSmall assumes 4px/char, but MatrixChunky8 is proportional
(spaces advance 2px). Measure the real rendered width and override
box.w so the plum pill hugs the text instead of overshooting to the
right. Bump the vertical gap between notepat and the commit button
from 2px to 6px when stacked so they stop crowding each other.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>