Docusaurus 1.x has no config hook for arbitrary <head> tags, and the
verifier reads the served HTML without running JS, so the homepage tag is
injected during the deploy assemble step. The playground ships it in its
own index.html, in case /playground/ is registered as a separate property.
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
Search engines and social crawlers previously saw an empty page: the
playground shipped a bare <div id="root"> with no description, canonical,
or Open Graph tags — so shared links (the playground's own core feature)
rendered without a preview card.
- Add meta description, canonical URL, and Open Graph / Twitter cards
with a generated 1200x630 preview image
- Ship static fallback content inside #root, replaced by React on mount,
so crawlers and card bots (which never run JS) read real content
- Promote the app title to a proper <h1>
- Register /playground/ in the sitemap during deploy
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
A browser-based playground for the diagrams library: write Python, see
the rendered diagram instantly. Runs the real diagrams package
client-side via Pyodide (WASM) — fully static, no backend.
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>