[UltiPro]

Summary

Prepares the first pre-release, 0.1.0a1. It publishes the project foundations and the command line skeleton, and gives miniops-ml its page on PyPI.

• Version set to 0.1.0a1 in pyproject.toml and uv.lock
• CHANGELOG.md: the "Unreleased" entries become the 0.1.0a1 section, with links to the tag
• README.md: status note that renders on PyPI, absolute links and a PyPI badge

Checklist

• PR title follows Conventional Commits (e.g. feat(registry): ...)
• Larger or architectural changes were discussed in an issue first (n/a: no architectural change)
• Tests added or updated (if applicable) (n/a: no code changed)
• No OS-specific assumptions (paths, shell commands, file encodings); works on Linux, macOS and Windows
• Documentation updated
• CHANGELOG.md updated under "Unreleased" (the entries moved to the 0.1.0a1 section)