wpgraft reads the page as your browser rendered it, the real elements and the real computed styles, at every breakpoint you ask for, and rebuilds it as Divi’s own native elements with the styles in Divi’s own fields. It does not care that a language model wrote the HTML, and it does not care what framework the page was built with: by the time wpgraft looks, all of that has already become computed styles.
The awkward part of building a page with Bolt was never the generating. It is that what comes out is HTML, and what you need is something you can edit in Divi next month without opening a code editor. This closes that gap: the generated page is rebuilt as real Divi elements, so the next change is a click in a panel rather than a prompt and a re-paste.