Three demo/chrome fixes:
- Drawer inspector: the open toggle (SlidersHorizontal) stayed mounted
while the panel was open, colliding with the panel's own X close in the
same corner. Render it only while closed; the panel's header X closes it.
- Preview columns: serialize as <div data-words-columns><div data-words-column>,
which no preview rule matched, so they stacked. Mirror the editor's row flex.
- Preview headings: were --font-size-2xl/xl/lg at weight 700 — louder than
the editor. Reference the SAME recipe tokens (xl, lg+4, lg; semibold;
heading line-height + primary color) so Preview reads like Edit. Verified
editor + preview both render h1=28px/600, h2=24px/600.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>