- Set ARCHS = "arm64 x86_64" explicitly in project-level Debug and Release configs
- Raise MACOSX_DEPLOYMENT_TARGET from 10.12.2 to 11.0 (minimum macOS for Apple Silicon)
- Pass ARCHS="arm64 x86_64" in build.sh and CI workflows to guarantee universal output
- Update CI action versions (checkout@v3, setup-node@v3, Node 18.x)
- Add lipo verification step in build-test CI to confirm universal binary
Sparkle.framework was already a universal binary (x86_64 + arm64).
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
