My goal for now is to have a simple way to record (the files) and manage (the folders) notes, collaborate (I currently use gitlab repositories) and potentially use them later, e.g. by copying relevant parts to make posts, documentation etc, or by writing a script that finds relationships based on the content (something I've been thinking about for links I save in Safari or Firefox too - a script that scrapes the pages and builds a tree to organize links automatically).

Maybe a tool that could navigate the files, extract headlines and content to figure out relationships out of the files would be ideal to help me compose new documents and posts.