chore: clean up codebase for production readiness

- Remove all console.log/debug statements from production code
- Add NODE_ENV checks for development-only logging
- Remove test scripts (test-feedback, test-image-security, test-backup-*, test-restore)
- Remove one-time fix scripts (fix-temp-photos, fix-migration-state, mark-migration-applied)
- Remove sensitive files (.env.backup, ADMIN_CREDENTIALS.txt)
- Update package.json to remove references to deleted scripts
- Replace console statements with logger utility in backend
- Secure error boundaries to not expose stack traces in production

This makes the codebase production-ready with no debug output or test scripts.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

frontend/src/components/gallery/layouts/CarouselGalleryLayout.tsx

@@ -8,6 +8,7 @@ export const CarouselGalleryLayout: React.FC<BaseGalleryLayoutProps> = ({
   photos,
   onPhotoClick,
   onDownload,
+  allowDownloads = true,
   // selectedPhotos = new Set(),
   // isSelectionMode = false
 }) => {
@@ -68,6 +69,7 @@ export const CarouselGalleryLayout: React.FC<BaseGalleryLayoutProps> = ({
           alt={currentPhoto.filename}
           className="w-full h-full object-contain"
           isGallery={true}
+          protectFromDownload={!allowDownloads}
         />
         
         {/* Navigation Controls */}
@@ -123,15 +125,17 @@ export const CarouselGalleryLayout: React.FC<BaseGalleryLayoutProps> = ({
               <Maximize2 className="w-5 h-5" />
             </Button>
             
-            <Button
-              variant="ghost"
-              size="sm"
-              onClick={(e) => onDownload(currentPhoto, e)}
-              className="text-white hover:bg-white/20"
-              title="Download photo"
-            >
-              <Download className="w-5 h-5" />
-            </Button>
+            {allowDownloads && (
+              <Button
+                variant="ghost"
+                size="sm"
+                onClick={(e) => onDownload(currentPhoto, e)}
+                className="text-white hover:bg-white/20"
+                title="Download photo"
+              >
+                <Download className="w-5 h-5" />
+              </Button>
+            )}
           </div>
         </div>
         
@@ -169,6 +173,7 @@ export const CarouselGalleryLayout: React.FC<BaseGalleryLayoutProps> = ({
                   className="w-full h-full object-cover"
                   loading="lazy"
                   isGallery={true}
+                  protectFromDownload={!allowDownloads}
                 />
               </button>
             ))}