删除试卷管理列表页未使用的 countQuestions 死代码(评审发现)

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

src/app/parent/exams/page.tsx

@@ -18,15 +18,6 @@ const MONTH_LABEL: Record<number, string> = {
 };
 const MONTH_ORDER = [0, 9, 10, 11, 12, 1];
 
-function countQuestions(qs: string): number {
-  try {
-    const arr = JSON.parse(qs) as unknown[];
-    return Array.isArray(arr) ? arr.length : 0;
-  } catch {
-    return 0;
-  }
-}
-
 export default async function ExamsAdmin() {
   const parent = await getSessionUser();
   if (!parent) redirect("/login");