ForestPart

Data-only marker for one piece of the Nürburgring Drive Eifel forest: a 200 m LOD cell (the LOD0 and LOD1 twins of every near-band tree in it) or a denser proxy / far density layer. It lives on a child of the forest root nring_tree_forest and holds the .population as a statically pinned asset field; the root's ForestDetail component reads it and draws it locally per device (cells near the camera, layers by quality tier). It draws nothing itself and needs no sibling components.