Replaces the code-generated opengraph-image.tsx (placeholder circles,
default font) with a static opengraph-image.png exported from the
designer's refined SVG — a properly-shaped paw mark and a different
typeface. The source SVG traces letterforms as vector paths and embeds
a raster background, which isn't practical to reproduce in a
next/og ImageResponse component, so it's shipped as a static asset
via Next.js's file-convention instead (same og:image/twitter:image
wiring, no proxy.ts change needed — same route path as before).