A comprehensive reference for modern web security and quality standards that covers HTTPS enforcement, CSP configuration, security headers, and safe coding patterns. Use it when auditing code for vulnerabilities, modernizing legacy projects, or implementing proper error handling. The examples are practical, showing both wrong and right patterns for everything from XSS prevention to passive event listeners. It leans heavily on Lighthouse audit criteria, which makes sense since that's what clients and stakeholders often reference. The security headers section alone is worth having on hand. Could use more on accessibility best practices, but for security and compatibility checks, this hits the main concerns you'll face in production codebases.
npx skills add https://github.com/davila7/claude-code-templates --skill best-practices