Converts a website with hardcoded content into a client-editable site backed by a git-based CMS (Keystatic by default) with a browser admin panel. Use when handing a site off to a non-technical client, making an AI-generated or agency-built site (Astro, Next.js, React) editable, adding a blog or CMS to an existing repo, or when the user says "make this site editable", "add a CMS", or "cmsify this".
