The AppShell root carries `bg-background`; on a full-viewport element that
~86%-opaque panel token painted a sheet over the z-0 canvas, hiding the
matrix rain (Classic) and neon field (Override) behind it while pseudo-
element effects like the scanline still showed. Make the root transparent
for both canvas themes so the field shows through; the opaque html backstop
stays the base and panels keep their own translucent backgrounds.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
indifferentketchup
f5e71bf989