> I could only get about 80% of what I wanted together with my hacky workflow.

I literally did this yesterday with solid results using Codex CLI. I used xhigh thinking and gpt 5.5.

I had it use KiCad directly via cli rather than via MCP, and I did make Claude Opus review it's work after every round. I got what I think will be a working revision A in about 10 hours of tinkering spread over a few days.