Security
- Added
Content-Security-PolicyandReferrer-Policymeta tags to all landing-site pages (index.html,install.html,impressum.html,datenschutz.html). The CSP restricts resources to same-origin plus the inline styles/scripts the pages actually use; the referrer policy isstrict-origin-when-cross-origin. (Clickjacking headers such asX-Frame-Options/frame-ancestorsonly take effect as real HTTP headers and cannot be enforced on plain GitHub Pages.)