building-a-github-action

Use FIRST when building, extending or reviewing a GitHub Action, a release/publish pipeline, or any Effect v4 program that talks to the GitHub API, to decide which @effected package owns a capability and which skill teaches it. Answers which service handles a capability, whether the kit already ships it, and what the modern @effected equivalent of a legacy Actions toolkit call is. Also use when: build a GitHub Action, new action, action.yml, GITHUB_TOKEN, GitHub App token, workflow command, job summary, check run, cache in an action, upload an artifact, publish to npm from CI, SBOM, attestation