[WIP] Fix failing GitHub Actions job Build and publish Python distribution

[Copilot]

• Inspect failing GitHub Actions run and job logs to identify root cause
• Reproduce the packaging/build issue locally and confirm failure conditions
• Apply the minimal repository fix for Python package build/publish configuration
• Add or update focused validation for the change (if applicable)
• Run targeted verification (build/tests) and security checks
• Run parallel validation and finalize with summary