It would sure be nice to have some standardized conventions around this. AGENTS.md etc. It seems insane to have to have multiple files/rules for essentially the same goals just for different tools.
The idea of having a bunch of A100 GPU cycles needed to process the natural language equivalent of a file pointer makes me deeply sad about the current state of software development.
Good coding and #prompting hack for coding. Imagine you have a large codebase and you work with other people and you want version control your .cursor folder. Just symlink it to another folder and version control that folder.
My CLAUDE.md and GEMINI.md both just say "See AGENTS.md".