Converts a Claude Design export bundle (typically named index.html, usually 1-5 MB) into plain static files - HTML, CSS, and font files with no JavaScript required. Use this skill whenever the user mentions a Claude Design export, a bundled HTML file from Claude Design, or asks to unbundle, extract, or convert a Claude Design project. Also trigger this skill if the user has a large single-file HTML export and wants to separate it into individual CSS and font files.