Annoyingly I do have a glhf 'vanity npub' but I'm not sure there is a way to swap out your npub 🤔
Discussion
Nope. The notes are attached to the npub.
Which is a good thing. Prevents impersonation.
I *believe* Pabz was working on something, but I didn't understand it so I could be wrong and I don't know if it was ever made
Well, you could just reemit the notes signed by a different npub, to migrate an account, and require the old npub to do it, so that there's a permission note people can check for authenticity.
I think he was working on some form of npub confirmation.