feat: 多项功能优化和bug修复

- 修复mockData.js语法错误，恢复项目正常运行
- 优化求职策略详情页拖拽功能，修复重复bug和保存逻辑
- 更新岗位级别名称：初级→普通岗，中级→技术骨干岗，高级→储备干部岗
- 更新个人档案学习时长：我的273小时(100%)，班级平均231小时
- 面试模拟页面添加视频锁定界面和背景图片
- 简历面试页面更新模板数据，添加更多岗位简历模板
- React版本降级至18.3.1解决兼容性问题

package.json

@@ -16,11 +16,15 @@
   },
   "dependencies": {
     "@arco-design/web-react": "^2.66.5",
+    "@dnd-kit/core": "^6.3.1",
+    "@dnd-kit/sortable": "^10.0.0",
+    "@dnd-kit/utilities": "^3.2.2",
     "@reduxjs/toolkit": "^2.8.2",
     "axios": "^1.11.0",
+    "dayjs": "^1.11.18",
     "echarts": "^6.0.0",
-    "react": "^19.1.0",
-    "react-dom": "^19.1.0",
+    "react": "^18.3.1",
+    "react-dom": "^18.3.1",
     "react-echarts": "^0.1.1",
     "react-markdown": "^10.1.0",
     "react-redux": "^9.2.0",