Legacy OG card route — 301 to the Next.js file-convention renderer.

External share-card crawlers (X / Twitter, LinkedIn, iMessage, Slack, Discord) cache the og:image URL aggressively. Historically that meta tag pointed here on api.storyflo.com; the frontend has since moved the canonical renderer to the Next.js file convention at https://www.storyflo.com/story/{slug}/opengraph-image (PR #87 — beige fallback + publisher-cover backdrop, single source of truth).

For any cache that still holds the old URL we hand back a permanent redirect so the next crawl naturally re-caches the new URL. New page renders point <meta property="og:image"> directly at the new URL via the frontend's generateMetadata flip — this handler exists purely to drain the long-tail of cached embeds.