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/common/ProtectionWarning.tsx

@@ -0,0 +1,113 @@
+import React from 'react';
+import { Shield, AlertTriangle, X } from 'lucide-react';
+
+interface ProtectionWarningProps {
+  type: 'devtools' | 'screenshot' | 'violation' | 'general';
+  message?: string;
+  onClose?: () => void;
+  severity?: 'low' | 'medium' | 'high';
+  autoClose?: boolean;
+  autoCloseDelay?: number;
+}
+
+export const ProtectionWarning: React.FC<ProtectionWarningProps> = ({
+  type,
+  message,
+  onClose,
+  severity = 'medium',
+  autoClose = false,
+  autoCloseDelay = 5000
+}) => {
+  // Auto close functionality
+  React.useEffect(() => {
+    if (autoClose && autoCloseDelay > 0 && onClose) {
+      const timer = setTimeout(() => {
+        onClose();
+      }, autoCloseDelay);
+      
+      return () => clearTimeout(timer);
+    }
+  }, [autoClose, autoCloseDelay, onClose]);
+
+  const getWarningConfig = () => {
+    switch (type) {
+      case 'devtools':
+        return {
+          icon: <AlertTriangle className="w-5 h-5" />,
+          title: 'Developer Tools Detected',
+          defaultMessage: 'Developer tools access has been detected. This action has been logged for security purposes.',
+          bgColor: 'bg-red-500',
+          textColor: 'text-white'
+        };
+      case 'screenshot':
+        return {
+          icon: <Shield className="w-5 h-5" />,
+          title: 'Screenshot Attempt Detected',
+          defaultMessage: 'A screenshot attempt has been detected. This gallery is protected from unauthorized copying.',
+          bgColor: 'bg-orange-500',
+          textColor: 'text-white'
+        };
+      case 'violation':
+        return {
+          icon: <Shield className="w-5 h-5" />,
+          title: 'Protection Violation',
+          defaultMessage: 'An unauthorized action has been detected and blocked.',
+          bgColor: severity === 'high' ? 'bg-red-500' : severity === 'medium' ? 'bg-orange-500' : 'bg-yellow-500',
+          textColor: 'text-white'
+        };
+      default:
+        return {
+          icon: <Shield className="w-5 h-5" />,
+          title: 'Security Notice',
+          defaultMessage: 'This content is protected. Unauthorized access attempts are monitored.',
+          bgColor: 'bg-blue-500',
+          textColor: 'text-white'
+        };
+    }
+  };
+
+  const config = getWarningConfig();
+
+  return (
+    <div className={`fixed top-4 right-4 ${config.bgColor} ${config.textColor} p-4 rounded-lg shadow-lg z-50 max-w-sm`}>
+      <div className="flex items-start gap-3">
+        <div className="flex-shrink-0 mt-0.5">
+          {config.icon}
+        </div>
+        <div className="flex-1 min-w-0">
+          <div className="text-sm font-medium">
+            {config.title}
+          </div>
+          <div className="text-xs mt-1 opacity-90">
+            {message || config.defaultMessage}
+          </div>
+        </div>
+        {onClose && (
+          <button
+            onClick={onClose}
+            className="flex-shrink-0 ml-2 -mr-1 -mt-1 p-1 rounded-full hover:bg-white/20 transition-colors"
+            aria-label="Close warning"
+          >
+            <X className="w-4 h-4" />
+          </button>
+        )}
+      </div>
+      {autoClose && (
+        <div 
+          className="absolute bottom-0 left-0 h-0.5 bg-white/30 animate-pulse"
+          style={{
+            width: '100%',
+            animation: `shrink ${autoCloseDelay}ms linear`
+          }}
+        />
+      )}
+      
+      <style jsx>{`
+        @keyframes shrink {
+          from { width: 100%; }
+          to { width: 0%; }
+        }
+      `}</style>
+    </div>
+  );
+};