And after using AI relatively successfully for a few months (including the async DNS script), this week AI coding let me down badly. I wanted it to help me write a secure website running on cloudflare's serverless worker infrastructure and it completely cocked up the log out process and some related issues regarding the session cookie.

Critically, and as is something I have come to expect, it displayed no understanding that what it had done was never going to work and that all the session management had to be done server side. Instead it repeatedly created more and more baroque "workarounds" in the client javascript that could never work. It turns out this is quite hard to do using CF workers, and there are next to no examples of it working correctly, but the AI didn't tell me that, it just kept on trying to produce doomed solutions.