I propose that the UI version be included alongside the backend version at the bottom of the page. For example, Lemmy.ml does this [1]:

I think this information is useful to have for diagnostic purposes, reporting bugs, and for referencing documentation.

References
  1. Lemmy.ml. Lemmy. Accessed: 2025-02-08T05:59Z. URI: https://lemmy.ml/.
    • Found at the bottom of the page.