The list-to-header cover flights read as a gimmick and add per-frame
cost during navigation. Removed the heroTag plumbing end to end
(recents, search rows, discography cards, Album/Artist/Downloaded
headers, motion banners). Kept: the mini player expand hero, the
library-to-track-metadata hero, real loading headers, and the
loading crossfade.
Tab navigators get a HeroController (nested navigators have none, so
Heroes never flew inside tabs). Search result rows, recent-access items,
and artist discography cards tag their covers; Album/Artist/Downloaded
screens accept a heroTag and mount the matching Hero on the header
cover. Tags are scoped per list section to stay unique per page.
- album/playlist/library-folder/track-metadata adopt
CollapsingHeaderScrollMixin; artist/library-folder adopt
SelectionModeMixin
- HeaderCircleButton and HeaderMetaRow replace per-screen copies
in album and playlist headers; dead _tallHeader flag removed
- SelectionBottomBar gains optional subtitle labels and backs the
playlist selection bar in queue tab
Both carried yet another copy of the collapsing detail header.
AlbumDetailHeader gains appBarTitle (selection-aware toolbar title) and a
leading override for the folder screen's close/back switch. The playlist
header adopts the album layout (bottom-anchored content, 0.85 gradient,
length-adaptive title size, scrim only when blurred) instead of its
drifted centered variant; motion-banner and pill-chip meta are preserved
through the slots.
Single homes for logic that was copy-pasted across screens: the settings
collapsing header, album detail header (online screen's design as the
reference), selection pill button + bottom-bar chrome, disc separator
chip, error card, cover URL upgrade, byte/clock formatting, duration
extraction, UnifiedLibraryItem (moved out of the queue_tab library so
other screens can import it), and the batch convert/ReplayGain engine
keyed on it.
zarzet