Remove x86 macOS support from GitHub Actions (#12) Removed the macos-13 runner configuration for x86_64/Intel macOS builds. Only macOS ARM64 (Apple Silicon) builds will be produced going forward. https://claude.ai/code/session_01XJ8dSURebKvSCZqxXf9mJi Co-authored-by: Claude <noreply@anthropic.com>