Linting rules and scripts should never live in an IDE-specific directory.
Of course they should. Obviously it shouldn’t be the only place they are, but committing IDE code styles settings that match the externally-enforced project styles is absolutely helpful.
Or, in our project we have a bunch of scripts that you can run manually, but we also have commited IntelliJ run configurations that make running them a convenient in-IDE action.
That’s the point. There is nothing strange or shady about the fact that things you type into DeepSeek.com are sent to DeepSeek.com. Obviously keystrokes you submit to a website are submitted to the website.