On my Mac, I can do the 4-finger swipe to check my full-screen notes. Usually I have a folder structure like notes/2019-10/2019-10-21.txt. If I want to tag things, I'll just write #idea #work somewhere in the text file.
Then easy to search with Sublime or whatever tool you want. I also like this approach because it's future-proof. Just a folder full of text files.
Curious how others are handling this same workflow.