The iTunes artist / album detail in the Erkunden tab are in-screen overlays on the
NavHost "erkunden" destination, not real routes. Their BackHandler lost back priority
to the NavHost, so one back press popped Erkunden → Home instead of dismissing the
overlay (artist→search, album→artist).
Handle the overlay's back at the app root via OnBackPressedCallback (the same proven
mechanism as the NowPlaying overlay): ExploreScreen reports its current overlay close
action up through onOverlayBackChange, and AppNavigation registers a root-level back
callback for it. Also covers an album opened straight from search (no artist), which
had no back handling at all. Removes the temporary nav-debug strip.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
HoneyandClaude Opus 4.8
e50b4dc93c