Comment by prologist11

I built something like this using manual screenshoting, OCR, and indexing with Meilisearch but now there are tools to do this automatically like perfectmemory.ai. You can definitely build something yourself by gluing a bunch of open source tools like I did but if you want something ready-made then it kinda already exists if you are willing to trust your operating system or 3rd party software engineers to not leak your information.