feat(landing): badger-branded OG social card

Re-renders the 1200x630 social card with the new Badger logo + wordmark
and the cream/honey theme. Source SVG is kept alongside the PNG so the
card can be re-rendered with resvg-js whenever the brand changes:

  npx -y @resvg/resvg-js-cli     --font-file landing/assets/fonts/fraunces-600.woff2     --font-file landing/assets/fonts/fraunces-400.woff2     --font-file landing/assets/fonts/figtree-400.woff2     --font-file landing/assets/fonts/figtree-700.woff2     --font-file landing/assets/fonts/space-mono-700.woff2     landing/assets/og.svg landing/assets/og.png

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: Disane87