Oak This repository is the open-source heart of Oak: version control at the speed of agents. It's developed as a Cargo workspace: a reusable VCS library plus the oak command-line client that agents drive. Bring your own agent (Claude Code, Codex, Cursor, …); Oak is the foundation it reads, writes, branches, and collaborates through. The substrate is shaped around how agents actually work — branch-per-session as the unit of work, branch descriptions in place of per-commit messages, and content-addressed lazy mounts that get an agent editing any repo in seconds. Because it's content-addressed an