- lang/tools/install/el-install.el: El program that fetches the latest
release from the Gitea API, downloads el-sdk-latest.tar.gz, and
extracts it into ~/.el (or a custom prefix passed as argv[1])
- lang/tools/install/manifest.el: build manifest for the el-install package
- .gitea/workflows/sdk-release.yaml: build elb, epm, and el-install
binaries; bundle elc + elb + epm + runtime files into el-sdk-latest.tar.gz;
attach both the tarball and el-install binary to the Gitea release
alongside the existing per-file GCP uploads