- Camera at origin (CV frame) looking at +Z with screen-up = CV −Y, so the rendered scene matches the camera's vantage point. OrbitControls retargets to the plane centroid on fit so rotation feels natural. - Simplify scatter coloring to two tones: red for filter-excluded points (signed_distance < −offset_mm/1000), cyan-white for everything kept. Matches the backend filter contract exactly. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>