Important authenticated endpoints captured:
GET https://api.liblib.tv/api/canvas/project/detail?uuid=ed9a2c12570a49b9a1186017b2c38b52
POST https://api.liblib.tv/api/canvas/project/list
POST https://api.liblib.tv/api/canvas/project/draft/update
POST https://api.liblib.tv/api/canvas/project/heartbeat

UI export/share check:
- Top save button: 保存画布
- Top share button: 发布与分享 / 在LibTV上发布 / 分享链接
- No visible 导出代码 / 下载代码 / 前端源码 option was present.