Maybe a sort of read-later, you react with specific emoji and the note, *with all the assets*, is backuped up in Joplin.
For me this would be extremely useful.
Discussion
Oh, but then you are talking about a running service that runs in someone's cloud and injects stuff into your Joplin? I thought it was a local desktop note-taking app.
A service is an option (it supports sync), but we don't need it. The plugin could just REQ all my reactions, filter them and do the fetch/backup.
Or with the same logic, the possibility to append/prepend a note to a single Joplin note.
Currently I have a (not nostr related) script to do this for some logging purpose:
sqlite3 /..../joplin-desktop/database.sqlite <