build: libomp path assumes ARM homebrew (/opt/homebrew) - fails on x86 Mac #2

Summary

npm run test2 fails on Intel Macs because the CI script assumes the ARM homebrew path for libomp.

Steps to Reproduce

1. Intel Mac (x86_64) with homebrew at /usr/local/
2. brew install libomp
3. npm run test2

Error

cp: /opt/homebrew/opt/libomp/lib/libomp.dylib: No such file or directory

Expected

The script should detect the correct homebrew prefix:

• ARM: /opt/homebrew/
• Intel: /usr/local/

Actual Location

$ ls -la /usr/local/opt/libomp/lib/libomp.dylib
-r--r--r--  1 ankit  admin  688256 Mar 27 06:47 /usr/local/opt/libomp/lib/libomp.dylib

Suggested Fix

Use $(brew --prefix) instead of hardcoded path:

LIBOMP_PATH="$(brew --prefix libomp)/lib/libomp.dylib"

Or detect architecture:

if [[ $(uname -m) == "arm64" ]]; then
    BREW_PREFIX="/opt/homebrew"
else
    BREW_PREFIX="/usr/local"
fi

Environment

• macOS Sonoma (darwin 25.4.0)
• x86_64
• Node.js v25.8.1
• Apple clang 21.0.0