Switch the favicon set + icon-512 + apple-touch-icon to the no-text
hexagon+wrench mark so it stays legible at 16-32px (the wordmark
version was unreadable at favicon sizes).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Replace placeholder favicon.svg with the designed Fabric icon as a PNG
favicon set (16/32/256), apple-touch-icon (180), icon-512; document
title -> 'Fabric'; theme-color black to match the icon.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
