React static education docs site, flat Bilibili-like layout, infinite scroll course notes, mock content only

React static education docs site, flat Bilibili-like layout, infinite scroll course notes, mock content only: a task in MiMo-V2.6-RL-harbor-webdev: MiMo-V2.6-RL Webdev (Harbor) (Harbor dataset). What the agent is asked, how it is graded, what it runs in, and its files.