why: Cut a new developmental release carrying the sphinx-argparse-neo
multi-page duplicate-label fix (#16) so the 13 downstream consumers
can pin a published prerelease instead of depending on unreleased
main.
what:
- Raise project.version and internal == pins across pyproject.toml
  files
- Bump __version__ and extension metadata strings
- Update package_tools smoke conf, test_package_tools, and releasing
  docs examples
- Regenerate uv.lock