Show HN: Create a language learning micro challenge with videos

Hi HN, these challenges are meant to be used with an app that I'm building, but they can be used independently as well.

The app facilitates language learning with Youtube videos by showing the transcript alongside the video, translations, exercises and more.

I struggle with finding the right videos and staying consistent with my language learning, so having a structured plan helps a lot.

The generation process can take a few minutes, since it goes through multiple steps to find suitable videos (query expansion -> retrieval -> filter -> analysis -> filter -> generation)

Here's an example of a simple 7 day SpongeBob challenge in Spanish that I created: https://lingolingo.app/challenge/shared/curriculum-c9f797fe