Add: - `CONTRIBUTING.md` covers setup, checks, pull requests and project conventions. - `SECURITY.md` gives a private vulnerability-reporting route and supported-version policy. - A code of conduct is present. - Issue and pull request templates ask for useful, minimal information. - README no longer describes the source as private.
Add:
CONTRIBUTING.mdcovers setup, checks, pull requests and project conventions.SECURITY.mdgives a private vulnerability-reporting route and supported-version policy.