I've been trying to figure out what I might need to do in order to turn my Obsidian vault into a dataset to fine tune against. I'd invest a lot more into it now if I thought it would be a key to an AI learning about my the way it does in the movie Her.
I'm interested in this as well and have been exploring similarly. Would be super interesting to chat if you're up for it as well. Sending you an email to say hello.