There is a hundred-mile gap between those two places. "Write a register-based VM with a zig-style flat AST" is a lot less work than actually writing it. That's the kind of direction it needs.
Even that prompt leaves a lot of coins to be flipped...
There are decisions you care about, and ones you don't. Things like naming conventions or formatting probably belong to the latter category, and in that case having the AI arbitrarily decide isn't going to matter.
loool. I tried to find good words what icked me with the sentence, but you got it on point.