command-action

GitHub Actions / JavaScript Action spec reference grounded in the live official GitHub Docs (fetched on demand, not embedded). Use whenever planning, implementing, or reviewing any change touching `action.yaml` / `action.yml` (inputs, outputs, branding, `runs.using`, `pre`/`post`), workflow files under `.github/workflows/`, the JS action runtime (Node version, `dist/` bundling, `main` entrypoint), `@actions/toolkit` usage (`core`, `github`, `exec`), `GITHUB_TOKEN` permissions, event triggers, contexts, or expressions. Trigger even when the user does NOT explicitly ask to "check the spec" — verify the change against the latest docs and surface deprecations, breaking changes, and runtime constraints before they land. Especially important in repos that ship a custom action (`action.yaml` at the root) or maintain non-trivial workflows.