- AddLanding no longer adds a shallow positive ellipsoid (floor plate check 71.3% -> 0%). - Round 10 had removed all relief on passage walls to pass the ring check (smooth tube; rejected). Cause found instead: the owner roughness's 8-voxel Z anchors with linear interpolation. Passage- controlled walls now use 2-voxel anchors, blended smoothly into the 8-voxel ones. - Ring gate (lag-20 correlation) 0.376 -> 0.038 AND shaft relief RMS 1.294 (smooth-tube control 0.276 fails); passage/cave relief ratio 1.152. Faint rings remain deep in the shaft. - Whole view 0.984 s cold @8w (interleaved, full payload); W1/W8 44/44 hash fields equal; routes 5642/5642; look and far-survival audits pass; bad-shell control fails. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MmSoF64BbRFmk9C3p1VsBJ