As someone has said, notion.so. I use it for a lot more than project self management and it has everything I spent years looking for in notebook apps.
I have one notebook where I keep jobs and projects, under each I can have issue tracking, to-do lists, language cheat sheets if needed, the source code for pasting in and out of ides, etc THEN copy that whole bundle and not have to set it up 400483912 times.
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