wpgraft does not care that a language model wrote the HTML, or what framework it used. It reads the page as your browser rendered it: the real elements and the real computed styles on each one, at every width you ask for. It then builds that as Figma layers: frames, text, vectors and image fills, with auto layout wherever the page was genuinely laid out in rows and columns. Nothing that arrives depends on Lovable still being there.
Lovable gets a working app on screen fast, and the design conversation around it usually still happens in Figma. Open the preview in its own tab, put each screen into the state you want, and wpgraft builds it into your Figma file as layers, so the design catches up with what was generated.