fix: remove duplicate hasIssues declaration in Step6

src/app/features/novel-writer/components/pipeline/Step6ContinuityCheck.tsx

@@ -144,7 +144,6 @@ export default function Step6ContinuityCheck({
     }
   };
 
-  const hasIssues = results?.some((r) => r.status === 'issue');
   const hasWarnings = results?.some((r) => r.status === 'warning');
 
   return (