This commit addresses several gaps identified in a comprehensive documentation audit.
- Adds `AUDIT-DOCUMENTATION.md` with the full audit report.
- Adds a `CONTRIBUTING.md` to guide new contributors.
- Adds a `CHANGELOG.md` to track version history.
- Adds `docs/faq.md` and `docs/troubleshooting.md` to improve user support.
- Updates `mkdocs.yml` to include the new documentation pages.
Co-authored-by: Snider <631881+Snider@users.noreply.github.com>
