Improve image handling and add security headers. Addresses image loading errors and enhances security by implementing Content-Security-Policy, X-Content-Type-Options, and X-XSS-Protection headers. Screenshot: https://storage.googleapis.com/screenshot-production-us-central1/9dda30b6-4149-4bce-89dc-76333005952c/8166d521-ab6d-49dc-bd03-63e0c10a9767.jpg