feat: 添加测试用户到种子数据, AI改写功能优化, 前端联调修复

client/js/scenes/StoryScene.js

@@ -218,7 +218,9 @@ export default class StoryScene extends BaseScene {
 
     const padding = 16;
     let y = 100 - this.recapScrollY;
-    const pathHistory = this.recapData?.pathHistory || [];
+    const rawPathHistory = this.recapData?.pathHistory;
+    // 兼容结局续写（pathHistory 是对象而非数组）
+    const pathHistory = Array.isArray(rawPathHistory) ? rawPathHistory : [];
 
     // 保存卡片位置用于点击检测
     this.recapCardRects = [];