feat: 作业页面单元分类导航和样式优化

- 为复合能力课和垂直能力课添加单元分组结构
- 实现单元导航栏和课程筛选功能
- 优化导航栏样式，采用胶囊式设计
- 调整页面布局和间距，提升视觉体验
- 修复营销能力课日历事件显示问题
- 修复1v1规划时间为14:00-16:00
- 修复作业页面iframe返回后滚动失效问题

🤖 Generated with [Claude Code](https://claude.ai/code)

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

teacherData.json

@@ -9,7 +9,7 @@
         "课堂不枯燥",
         "学习氛围爆棚"
       ],
-      "avatar": "https://ddcz-1315997005.cos.ap-nanjing.myqcloud.com/static/img/teach_sys_teacher-avatar/recuUpJBE4VCCx.png",
+      "avatar": "https://ddcz-1315997005.cos.ap-nanjing.myqcloud.com/static/img/teach_sys_teacher-avatar/recuUpJBE4VCCx.jpg",
       "type": "复合课导师",
       "courses": []
     },