init

Initialize the current consumer repository for loomwork, or upgrade one set up by an older loomwork version. Scaffolds the SDD spec and plan directories, removes the legacy marker-guarded doctrine block from AGENTS.md or CLAUDE.md and the old Cursor hook setup, and migrates an old STRATEGY.md into a short product context section. Use when setting up loomwork in a repository or re-running it after a loomwork upgrade.