This is a small thing, and the demo case is kind of silly (because there's an open-with-nostr button under the articles it's currently working for). Nevertheless, if you publish articles on the Web as well as on Nostr, would you consider adding this HTML element to your pages?

Linking to Nostr versions of Web content in a machine-readable way

A modest proposal for Web publishers and Nostr developers

Also, if you're working a Nostr client that renders previews for linked content of any kind, you might want to parse that element and adapt your UI for Web pages that tell you about Nostr versions of their content. Also please do let me know if you think I'm doing things wrong, or if you have any other kind of feedback. Thanks!