ragproof 0.4.1

• Renamed the Python distribution to ragproof-cli while preserving the ragproof module and console command, preventing accidental installation of an unrelated PyPI project.
• Added package metadata checks and a clean-wheel smoke test to the release workflow.
• Added a reproducible public HTTP retrieval corpus, dataset, baseline, and CI gate; corrected the starter benchmark manifest's language labels.
• Added dependency auditing, CodeQL analysis, private-reporting guidance, and GitHub community templates.
• Pinned reusable Action documentation to v0.4.1, modernized the standalone workflow example, and clearly labeled the mock-generated sample report.