One day, one generative AI tool

ChatEdu (https://chatedu.io) accompanies the learning from downloaded files: querying via a chatbot, guide to help with comprehension, quiz and video (video generation did not work during the tests).

This release is the fourth iteration of the ChatEdu project (versions 1 to 3 in open-source: https://github.com/chat-edu).

In the free version 20 discussions, 3 files and 30 questions per month.

Tests from UNESCO teacher competency frameworks and contributions from AI and education research.