zwitschi
cdfb24a2b1
84 samples across the north sidewalk, carriageway and south sidewalk (X -14900..-9420) come back with 0 holes and ground Z 317..395, so the block is traversable rather than merely spawnable. TODO: sidewalks/collision item now records the collision state and what is genuinely left (kerb radii, aprons, kerb-height assumption); the traversal release check is ticked with the measurement.