add binary build job to test Zig installation

[StephanMeijer]

Temporarily add build-binaries job to CI to verify Zig setup works. Does not upload artifacts - just builds and verifies.

Description

Related Issue(s)

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update
• Refactoring (no functional changes)

Testing

• Unit tests pass
• Integration tests pass (if applicable)
• Manual testing performed

Checklist

• My code follows the project's style guidelines
• I have performed a self-review of my code
• I have added tests that prove my fix is effective or that my feature works
• I have updated the documentation (if applicable)
• My changes generate no new warnings