gui: outline previews in high contrast and keep them left-to-right

Review fixes: high-contrast edges for previews and orbs, LTR preview direction to match its CSS, the input bar as its own part (no specificity tie) with touching halves, and an accurate swatch comment.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
bcc0c4989bLucenx9 committed on 10/10/2026, 4:21:10 PMparent3b9a139
2 files changedLine totals unavailable