Cards in a deck share the deck's GUID, so GUID-based selection highlighted
every card with that GUID and rendered the first match. Key selection by the
node's unique index path instead.
Replace the text class tag in the tree and inspector with one or more
MDI icons (hover shows the class name). Bundle only the used icons via
a generator script instead of the full set.
Key tree nodes by their index path instead of GUID, since TTS saves can
contain duplicate GUIDs. Skip the Parent back-reference in the default
viewer and stringify with a circular-reference guard.
Add a containment-tree sidebar with class tags and display labels, plus
an inspector pane backed by a viewer registry with a default viewer.
Custom per-class viewers can be registered later.
hypercross