[Leynos]

With 5.3 Codex, the execplans skill and a well specified implementation task, you can get a good couple of hours work in a single turn. That's already in the scope of "set it up before bed and review it in the morning".

If you have a loop set up, e.g., using OpenClaw or a Ralph loop, you can stretch that out further.

I would suggest that when you get to that point really, you want some kind of adversarial system set up with code reviews (e.g., provided by CodeRabbit or Sourcery) and automation to feed that back into the coding agent.