Make it easy to find nodes/edges that I haven't looked at yet

[keyserj]

Describe your issue

If I'm learning a large topic, it'd be nice if it were obvious which nodes I haven't looked at yet, so that I don't have to spend effort re-looking at or remembering which nodes I've already read through.

Solution you'd like

Make it clear to me which nodes I haven't seen yet.

UI questions:

• how to display which nodes have/haven't been seen?
  • consider aligning UX with Explicitly mark items to do something with #417. i.e. being able to one-click-filter the diagram or a text list down to only unseen nodes
  • probably an indicator on the node would also be nice, like how Kialo does:
    

Functionality questions:

• what should trigger that a node has been seen?
  • just showing up on screen is probably too presumptuous - if a topic is big, people likely wouldn't read all the nodes on screen
  • perhaps if a node has been selected, that should be enough
• should there also be "mark as unseen"?

Alternatives you've considered

• potentially, users could just score all the nodes they've seen, and there could be a feature to show nodes that haven't been scored yet

Additional context

• is there a use case here also for making it easier for contributors to stay up-to-date on a topic? to quickly find new nodes that haven't been seen before? seems like this would be better accomplished by having history Topic history #371 & tracking which changes were made since you listed visited

Technical ideas and questions

No response