Author and run resumable, cached install/setup scripts with the `anchored-install` (`ai`) tool — a backend-agnostic installer that gives plain shell scripts Dockerfile-style layer caching, so a failed re-run resumes from the last successful step instead of starting over from the top. Use this whenever the user wants an install, setup, bootstrap, provisioning, or environment-setup script that is resumable, restartable, idempotent, re-runnable, or cached — or that "shouldn't redo everything that already worked" when it fails and is re-run — even if they never mention anchored-install or `ai` by name. Also use it when writing or editing `#ai` manifests, debugging a manifest that failed mid-run, or converting an existing install.sh / setup script into an anchored-install manifest.
2026-06-20