Add doc to footer: https://drive.google.com/file/d/1_e3pgoEVTBn_onjAUO75aZxoYYywXV-H/view?usp=drive_link <img width="800" alt="Image" src="https://github.com/user-attachments/assets/2685329f-74d5-4e98-9631-3360419e7786" />
