Live-session finding: the half-disc cut bit nearby side walls while leaving the wall actually occluding the character at full height, with dome-contour scallops across the two-row walls. Rewritten as a sightline corridor: walls within CUT_CORRIDOR_HALF_W of the character's x, camera-side, out to a pitch-derived reach (WALL_H / tan(pitch) — how far a wall can still occlude in ortho; ~4.3 m at -30, breathes with the T-cycle tilt) drop to the stub. FollowCamera3D exposes pitch_deg(); reach clamped 0.5-16 m. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>