Given that someone has to operate this REPL and compiler, the I is that someone. A system that can do that without an operator would be a decent step forwards.
Like, the task I sketched out is the bare basic sketch of what you can ask a new grad/hire to do. Which ends up being ~80% of their job anyways. I really don't think the average person could do that task (unfortunately).
If the new Claude code stuff honestly can do this, then, like I said, that's a close enough definition of AGI for me.