site-to-design-md

Generate a DESIGN.md from a live website URL, following Google's open DESIGN.md spec. The agent captures a viewport screenshot, samples colors and typography directly from the pixels, emits YAML frontmatter (tokens) plus canonical markdown sections, and validates the output with the official `@google/design.md` linter. Triggers on "extract design system from <url>", "generate DESIGN.md from <site>", "site to design md", "design audit of <url>", or any request to derive a design-system document from a live web page.