CLAUDE.md, Obsidian, Markdown Files, and Why Workarounds Don't Scale for Teams

Every team using AI coding tools has invented their own version of the same hack. Some put everything in CLAUDE.md and commit it to the repo. Some maintain shared Obsidian vaults. Some have a context/ folder full of markdown files that someone updates when they remember to. Some paste a summary prompt at the start of every session. Some just re-explain everything every time and accept the tax. These all work, kind of, for one person. They all break the moment you add a second person or a secon...