Developing an entirely custom operating system using Claude Code

I've been writing toy kernels and working on operating system projects since my childhood, and it's partly how I learned C. That includes this project, MontaukOS, which I started early in 2025, where I wrote a lot of the fundamental kernel code by hand. Because other things came up, I eventually lost interest in this project for a while, and let it sit for a few months. When Claude Opus 4.6 came out, I was introduced to development through Claude Code (and agentic AI more broadly) for the first time. I figu