Returns all loaded features, each shallow-tagged with its owning layer id. Reads directly from state.layers (featureCache removed in Sprint 1).
Optional narrowing by geometry type and/or layer id.
GeoJSON features enriched with { _layerId }.
{ _layerId }
Returns all loaded features, each shallow-tagged with its owning layer id. Reads directly from state.layers (featureCache removed in Sprint 1).