96cade3226
Introduce a new GitHub Actions workflow (build-pypi.yml) to build Python Wheel and Source Distribution and upload them as release assets. Integrate the PyPI job into the release-all workflow and update .github/CI_CD_README.md to document the PyPI artifacts and the new build-pypi.yml entry. The workflow uses Python 3.13, installs build tooling, runs build_release.py, and uploads dist/* via softprops/action-gh-release.