A collection keeps its selection in Rust by persisted position, and
detailToggleItemSelect only toggled. It now takes `shift`: a plain or Ctrl
click toggles and becomes the anchor, a Shift click adds every row between
the anchor and the clicked one in the order the rows are DRAWN (filtered and
sorted, not the position order), and the anchor is dropped wherever the
selection is cleared. The list rows, their checkbox and the grid cards pass
Shift through; the kiosk list passes false.
In select mode a row's artwork still started playback and its title and
subtitle still opened the item or the artist. They stand down now, so the
click selects.
cc
vicrodh
ee3a186f6d