* Keyboard was shrinking to content + centering (dead horizontal space, squished
letters): auto side-margins on a flex item in the mobile flex-column don't
stretch. Now full width (align-self: stretch, margin sides 0), so the 9 letter
keys spread across the screen and the controls look proportional.
* Board tile width budget bumped (56→64) to cover page padding + the 5px gaps, so
Long Word (6 wide) can't trigger the few-px horizontal scroll.
* Hid the play-area scrollbar (scrollbar-width: none) so no stray "divider" shows.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
thejayman77
ac418591a8