Two voxel-mode holes, both in ChunkMesher's keep/emit rules:
1. A tile claimed by a standing object (building footprint, sign
standee, pond bushes) painted only its flat synthesized ground and
never emitted side faces, so beside recessed water the 2px step was
an open slit into the sky. The skip branch now emits the same
below-ground side bands ordinary ground does, cut from the
synthesized ground's art.
2. A profiled building whose front row is the map's last tile row has
its facade exactly on the shared boundary plane (Saffron's row
houses seen from Route 6), where the strict overBody test and the
closed neighbour mask dropped it. Outward-facing quads on the body's
boundary planes are now kept, told apart from ring scraps -- the
thing the mask exists to kill -- by their winding.
DramaticShape