Did you know you can open VSCode directly in GitHub? I just found out (thanks random YouTube recommendation).
To open a repo in VSCode just go to any GitHub repository and press .
. From here you can do most things you can do locally. Saved changes are stored and still available after closing the editor and re-opening it later. You can use the command palette, source control, split window view, markdown preview and much, much more. You can even install some extensions. Most of them are not available for VSCode web, though.
And while the local VSCode will still be more useful for coding, I will use the web version now for writing notes and small bug fixes.