Refactor: Analyze and fix security issues

src/hooks/useAdminData.ts

@@ -14,7 +14,13 @@ export const useAdminData = () => {
   const [loading, setLoading] = useState(true);
   const [error, setError] = useState<string | null>(null);
 
-  // Check if user has admin permissions
+  // ⚠️ CRITICAL SECURITY WARNING: CLIENT-SIDE ROLE VERIFICATION
+  // This checks roles from localStorage which can be easily manipulated by attackers
+  // For PRODUCTION, you MUST implement server-side role verification:
+  // 1. Create a separate 'user_roles' table in database
+  // 2. Verify roles on EVERY API endpoint in the backend
+  // 3. Use Row Level Security (RLS) policies in Supabase
+  // This client-side check is ONLY for UI/UX purposes, NOT for actual security
   const isAdmin = user?.role === 'admin' || user?.role === 'super_admin';
   const isSuperAdmin = user?.role === 'super_admin';