- single-track convert sheet now reuses BatchConvertSheet
(confirmLabelBuilder + sourceIsLossless params) instead of a
full inline copy
- provider priority page migrated to PrioritySettingsScaffold;
shared showDiscardChangesDialog and ReorderablePriorityItem
replace per-page copies
- home tab search rows unified into one _SearchResultRowItem;
_parseTrack copies rebuilt on Track.fromBackendMap with only
the load-bearing local overrides kept; loading/error scaffold
extracted
- PlayerArtwork widget shared by now-playing and mini player
- LocalOrNetworkCoverImage dispatches file vs network cover in
one place (playlist picker, queue nav, library folder)
