I worked on this product, which is available free for personal use: https://www.jitx.com/

I recommend the CLI, which I wrote specially to enable an easy LLM workflow: https://docs.jitx.com/en/latest/getting-started/cli/index.ht...

There's a companion Claude skill: https://github.com/JITx-Inc/jitx-skills

I would bet that using this, you could get pretty close to shippable PCB on first try. This is being used by some pretty big players to design complicated high frequency boards, and that's the main focus of the product, but it can handle basic designs just fine.