Bluebubble is the way to go for this. I've created an iCloud account for my llm. On my Mac, I created another user account, not an admin, just regular. Linked

Bluebubble is the way to go for this. I've created an iCloud account for my llm. On my Mac, I created another user account, not an admin, just regular. Linked to the iCloud account. Installed Bluebubble. And now I can chat with my AI via iMessage, via my Apple watch, or my homepods. It works beautifully.