Probably better not to. From my experience tabs (in the long run) are more annoying than helpful. Take vscode: I use the "open editors" menu, because tabs work just up to 3 of them. Then they either not fit (scroll-x), have titles far too short to be identifiable or take half the screen when using tab wrapping.

I haven't used heynote yet (in a train rn), so you may've that already in place, but:

I suggest implementing bookmarks with fuzzy search. Press ctrl+b a prompt comes up, type the thing, press enter and get your file scrolled to that section (markdown title)