The sound-specific half of a sound layer (SOUND_SPEC.md §4.2): the live
per-node gain the row's slider edits, and the provenance the tooltip shows.
A sound layer is HEARD, not drawn, so every appearance field on its
LayerInfo is a neutral placeholder the controls section hides.
The sound-specific half of a
soundlayer (SOUND_SPEC.md§4.2): the live per-node gain the row's slider edits, and the provenance the tooltip shows. A sound layer is HEARD, not drawn, so every appearance field on its LayerInfo is a neutral placeholder the controls section hides.