I don't really use Vanadium but for a couple PWAs that works only on Chromium. Otherwise I use Firefox with bookmarks sync.
I was mostly asking about saving apps icons position and folders on the launcher main screen.
You can,
A bit of a manual process, but follow this👇
https://discuss.grapheneos.org/d/11489-workaround-to-bulk-export-vanadium-bookmarks
I tested and worked great to 'share' into my local notes app. Just need to open all my bookmarks and do this💪
Discussion
Ah yea I would just do screenshots for that
Not sure another easier way to do so