I’ve thought about something like this, but I feel like the core part of the Zettelkasten method is the act of making connections and extracting ideas from the sources you interact with.

This is neat, but it's not zettelkasten - it's building a browse-able knowledge DB from content.

Zettelkasten is about about writing down your ideas in response to content, with a link to that content, and then linking to other ideas that your already logged. It's not an extraction of ideas from that content. This is a common mis-understanding of zettelkasten.

I love this concept, an AI-managed zettelkasten that actually closes the loop back into new sources. As the TODOs in end of your repo, I just humbly suggest that make "full text search" the top priority,enhancing discoverability and trustworthiness.

It removes the most important part of Zettelkasten: You