💄 Enhance toast notification styles

Update the toast notification component with improved styling for better visual appeal and consistency across alerts. :bug: Handle errors in medium processing Add error handling and logging for file processing in square, thumbnail, and lightbox_image methods to improve robustness. :lipstick: Update UI elements for guest photo guide Enhance styling and text formatting for improved readability and aesthetics. :lipstick: Add photo to about page :sparkles: Add QR Code Tutorial for Weddings Introduce a comprehensive tutorial on creating QR codes for wedding pictures, including two options: a custom QR code generator and a complete photo-sharing solution. Enhance user experience with detailed steps and visual aids.