The Gitea act_runner runs action JS in node:16-bullseye; setup-go@v5 crashes with 'ReferenceError: ReadableStream is not defined'. Gitea discovers .github/workflows too, so: - setup-go@v5 -> @v4 (node16-safe, fine on GitHub) - gate GoReleaser (release.yml) + release-please jobs to github.server_url == https://github.com so the GitHub CD never runs on the Gitea mirror (GoReleaser/release-please are GitHub-release-centric)