Honestly the leverage you have is the parts they can't vibe code. I mean DevOps, architecture decisions, anything that breaks quietly in production. i'd focus there and let them find out the hard way what happens when nobody understands the system they're shipping.

The joy thing is real, though. once a client stops trusting your judgment, the relationship is already broken. sometimes the right move is to document everything clearly, hand it over properly, and walk away before it becomes your reputation on the line. I'd like to know more opinions on this