Merge binary dependency license checks into the Build workflow

[Yicong-Huang]

Task Summary

Merge the standalone binary dependency license checks into the existing Build GitHub Actions workflow so pull requests no longer show a separate set of license-check jobs for JVM, npm, Python, and agent-service.

Priority

P2 – Medium

Task Type

• Code Implementation
• Documentation
• Refactor / Cleanup
• Testing / QA
• DevOps / Deployment