GitHub-hosted windows-latest/macos-latest replace the self-hosted act_runner pair; node 24 + corepack pnpm are set up explicitly (hosted images do not preinstall pnpm), and assets attach via gh release upload --clobber instead of the Gitea-API uploader script. macOS signing falls back to ad-hoc until a Developer ID cert + APPLE_API_ISSUER secret are provisioned on GitHub. Claude-Session: https://claude.ai/code/session_01A6RcwHhhsFYYrNdQB4ASuP