perf: 优化批量上传

components/levels/level-dialog.tsx

@@ -226,12 +226,12 @@ export function LevelDialog({
               onChange={(e) =>
                 setFormData((prev) => ({ ...prev, answer: e.target.value }))
               }
-              placeholder="请输入答案（最多4个字）"
-              maxLength={4}
+              placeholder="请输入答案（最多8个字）"
+              maxLength={8}
               required
             />
             <p className="text-xs text-muted-foreground text-right">
-              {formData.answer.length}/4
+              {formData.answer.length}/8
             </p>
           </div>