fix: remove console.log statements from gallery and auth pages

- Remove debug logging from GalleryView component
- Remove console.error statements from auth contexts
- Clean up image loading error logs
- Replace console statements with comments for production security

No sensitive information is now logged to console in production.

frontend/src/contexts/AdminAuthContext.tsx

@@ -44,7 +44,7 @@ export const AdminAuthProvider: React.FC<AdminAuthProviderProps> = ({ children }
           setIsAuthenticated(true);
         }
       } catch (error) {
-        console.error('Auth check error:', error);
+        // Auth check failed - user needs to login
         setError('Failed to check authentication');
       } finally {
         setIsLoading(false);

frontend/src/contexts/GalleryAuthContext.tsx

@@ -75,7 +75,7 @@ export const GalleryAuthProvider: React.FC<GalleryAuthProviderProps> = ({ childr
             localStorage.removeItem(`gallery_token_${currentSlug}`);
           }
         } catch (error) {
-          console.error('Failed to parse stored event data');
+          // Invalid stored data - clear it
           localStorage.removeItem(`gallery_event_${currentSlug}`);
           localStorage.removeItem(`gallery_token_${currentSlug}`);
         }