..except it's quite different though?

Adding a hook for compilation in most decent editors is only a few lines of config, and many popular editors (GNU Emacs, vim, m$ vscode) nowadays have packages that have these hooks predefined, so it pretty much just comes down to installing a package, which I hope you don't think is beyond the capabilities of the average user. Alternatively there are editors like texworks which provide exactly this feature out of the box.

Sure, and inotifywatch is probably trivial too - to those who know.