Fix ESLint error: remove unused CardDescription import

- Remove CardDescription from imports in long-story page
- Component was imported but never used, causing linting error
- All ESLint warnings now resolved

src/app/long-story/page.tsx

@@ -4,7 +4,6 @@ import { Button } from '@/components/ui/button';
 import {
   Card,
   CardContent,
-  CardDescription,
   CardHeader,
 } from '@/components/ui/card';
 import Link from 'next/link';