I thought about this more and changed my mind a bit. I think the version field should be correct since it is correct for most other packaged GNOME Shell extensions.
Here is a (reversed) example of how it could be done: https://salsa.debian.org/gnome-team/shell-extensions/gnome-shell-extension-dashtodock/-/commit/9e216da5 However, it is best practice in Debian to disable new version notifications so if this extension will suddenly start prompting about an outdated extension version, we would need to disable that. https://github.com/home-sweet-gnome/dash-to-panel/commit/223d0152 Thank you, Jeremy Bícha

