Thank you for your reply and the links to the documentation.
I'm now understanding better how the tab system for the panes is a compromise between including features/views and maximizing available screen real estate. I naively thought that this tab system was more highly extensible by the user, and it would be simple to add an additional "references" tab to the "environment" pane.
I'll open a feature request. After looking into it I don't think there is a way to view the currently referenced citations in a document in a single view, either as a pane or different window.
It might be nice to have the references as a view like the "outline" on the visual editor instead of as its own pane. Since the "outline" feature seems to be continually parsing the document for markdown headers, it might be able to be adjusted to parse for citations.
The way RStudio does citations works excellently for me, I've found it easier and more comprehensive than Zettlr. So it's more helpful in many others ways
This is just a little extra feature I was searching for and I appreciate y'alls prompt response.
In the meantime a simpler workaround that I could competently tackle might be to write a script that looks for the citations in the document and saves them in a data frame that gets displayed separately, that auto-updates, etc.
Thank you for pointing me in the right direction!
Cole