i ban the use of AI generated code in my projects. at least one of my projects uses libxml and someone could propose to switch to an alternative. a label would make it easier to avoid this library.

Involves and made only by, are 2 different things.

I use agentic coding in my daily work. I do make mental model of the code I write and I also test the code, exactly the same way, as when written completely manually.

Ah, so the code doesn't need an AI label as long as you promise you thought really hard about it before copy-pasting.

I understand it can be difficult to label, and there's an inconveniently large grey area here, but there is a difference between plain vibe-coded software and software built with AI under the control, direction and validation of a developer.

The distinction is probably not very important for small applications, as nobody cares if a minor script or a one-shot data processor has been vibe-coded, but for large applications it surely matters in the long term.