New inline logo-mark.svg partial in the nav (two-tone cutout via
--logo-ink/--logo-bg), regenerated favicon set + web-app manifest icons
from the new mark, 1200x630 og-image wired into head.html.
Known follow-ups (AUDIT-2026-06-09.md §9): the traced SVG is ~33 KB
inlined per page, favicon.ico carries 128/256px entries, and the
webmanifest dropped its maskable purpose.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
