The NODE + SECURITY split was a fixed 60/40 two-column layout regardless of
width, which cramps the RPC grid and wastes space on narrow windows. Make it
responsive: below a configurable content width (node-sec-stack-width, default
600) the two columns stack into one full-width column — SECURITY flows below
NODE — so each section gets the full width; side-by-side 60/40 is kept when
there's room. Column-geometry-only change (leftX/rightX/widths + the right
column's top Y); the content blocks are untouched. The rejoin already used
max(leftBottom, rightBottom), correct in both modes.
Full-node + lite build clean; source hygiene clean.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
DanS
3a9ff5f021