GitHub used to be for engineers. Now it's where the best PMs keep their AI work. Here's what's actually living in there: Your CLAUDE.md. Your skills. Your eval criteria. The files that decide how good your AI output is, and that quietly drift every week until the setup that worked last month starts ignoring half of what you tell it. Putting them in GitHub turns that chaos into a system. Three repos cover ~90% of PM work: 1. pm-workspace (private) Your CLAUDE.md, skills, autoresearch…