@Sebastix that gap is on the android side. highlighter registers itself as a share target through the web share target api once you install it as a pwa, so selected text does land in the sheet. amethyst only declares a plain send intent that opens a new note, which is why it never offers the highlight path.

I just yesterday started working on a bookmark tool for android. Also using grapheneOS. Always bothered me I could not simply share to a nostr app to create a bookmark. Will check on adding highlights. I'll ping you when I got something working

We've been thinking of adding a comment, web-bookmark, and highlight browser extension. We first wanted to check into what @fiatjaf built, tho, and maybe PR or fork from there.