fix(答案处理): 改进多答案字符串的分割逻辑

处理类似"同创造,共分享,齐飞扬"格式的答案字符串，统一使用逗号分割并去除空格

src/pages/QuizPage.tsx

@@ -379,8 +379,28 @@ const QuizPage = () => {
     if (!userAnswer) return false;
 
     if (question.type === 'multiple') {
-      const correctAnswers = Array.isArray(question.answer) ? question.answer : [question.answer];
-      const userAnswers = Array.isArray(userAnswer) ? userAnswer : [userAnswer];
+      // 处理正确答案
+      let correctAnswers: string[] = [];
+      if (Array.isArray(question.answer)) {
+        correctAnswers = question.answer;
+      } else if (typeof question.answer === 'string') {
+        // 尝试按逗号分割（处理如"同创造,共分享,齐飞扬"格式）
+        correctAnswers = question.answer.split(',').map(item => item.trim());
+      } else {
+        correctAnswers = [String(question.answer)];
+      }
+
+      // 处理用户答案
+      let userAnswers: string[] = [];
+      if (Array.isArray(userAnswer)) {
+        userAnswers = userAnswer;
+      } else if (typeof userAnswer === 'string') {
+        // 尝试按逗号分割（处理如"同创造,共分享,齐飞扬"格式）
+        userAnswers = userAnswer.split(',').map(item => item.trim());
+      } else {
+        userAnswers = [String(userAnswer)];
+      }
+
       return correctAnswers.length === userAnswers.length && 
              correctAnswers.every(answer => userAnswers.includes(answer));
     } else {