Lukas
400ab1a3f1
- Add SecurityHeadersMiddleware to backend/app/main.py - Implements Content-Security-Policy: default-src 'self' - Implements X-Frame-Options: DENY (clickjacking protection) - Implements X-Content-Type-Options: nosniff (MIME-sniffing protection) - Implements X-XSS-Protection: 1; mode=block (browser XSS filters) - Add CSP meta tag to frontend/index.html for defense-in-depth - Create Docs/Security.md with comprehensive security headers documentation - Add test suite (backend/tests/test_security_headers_middleware.py) with 5 tests - Tests verify headers are present on success and error responses - Tests ensure all four security headers are correctly set - All existing tests continue to pass Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>