In the mini (icon-only) sidebar the rows show no name. Add a hover bubble
to the right of each folder/top-level-playlist row surfacing the name
(folders also append their playlist count), mirroring the native title
Tauri puts on its collapsed buttons. Rendered at the AppShell level
(SidebarTooltip + SidebarTooltipState) because the sidebar clips its
overflow; anchored with the same Flickable absolute-position correction as
the folder flyout. Closes on click so it does not linger behind the flyout.
cc
