Feature Request: View Switcher or similar for mobile handset
Currently, I'm using spot also on the mobile device named as Lenovo A6010, and I'm not happy with current UX, that is terrible on small and big screens(of course on mobile devices). Always rely on GtkListBox for every action isn't good for daily usage, but perhaps the solution for this problem may be View Switcher(or top/dockbar as it referenced in some design docs), that can separate "Home" page(see #468), search and "Library" as in official mobile app. There are some reference in screenshots from official mobile app:
Dockbar example

Library menu example

Desktop app example

As I know, GTK and libadwaita allows changing elements in runtime(i.e. resizing window), so it should be possible to implement without changing "desktop" interface.
This makes sense to me, as long as it's technically feasible without too much jank - Software abandoned the desktop sidebar, mobile view switcher paradigm, for example: Reconsider sidebar for 41?
Software abandoned the desktop sidebar, mobile view switcher paradigm
Yes, I saw how worst it can be here after resize, but they chose View Switcher on all devices that works in their case, but not here. App will be unusable on desktop if there will be only View Switcher and with sidebar it will require additional work. I don't agree to leave everything as it is, because app already adaptive and can be used on the phone.
This makes sense -- would have to rethink quite a few things if we get rid of the sidebar though
It may be solvable after the release of libadwaita 1.3, adaptive states will be added there (they should be).