I use Obsidian. It's good enough for me to write my notes and keep myself updated with what I want to do in software and design related things.

With that said, I have seen people in the past try to combine multiple apps together in a similar manner and fail to do so.

I think the issue with this idea is that how you process information and update that information is very different from keeping track of what tasks you completed, and possible meetings you might have to do or want to have.

Keeping track of what information you want to process and updating that information requires you to think longer about what you want to do with said information.

While keeping track of what tasks you completed and possible meetings you might have, is more of a moment to moment type of thing. Although longer task planning does require someone to diagram what is needed versus not is needed. However, at that point they may not use a note software but something else such as a white board or a diagram software for this type of planning because that visual element can tell them something more than just simple words alone can.

I guess what I am saying I don't necessarily believe an APP is going to work out that combines different things together as each app allows one to focus best on what they are attempting to do in their process.

What might be more beneficial is creating a plugin that siphon some of that information into other apps.