CI matrix: warp-ubuntu-latest-x64-8x / warp-macos-15-arm64-6x / warp-windows-latest-x64-16x (the macOS steps were still in place, only the matrix entry was missing). CD: macOS DMG job re-enabled on the warp Apple Silicon runner; linux and release jobs back on warp-ubuntu; Windows NSIS stays disabled until the engine links there.