{"n": 1, "what": "turnaround sheet v1: 3D joints posed by acting params, projected at view phi; stick sheet", "saw": "plausible views; lying fold sent hind paws 21 cm under the floor at lie 0.6; knees bent the wrong way", "changed": "IK-placed standing legs, fold targets travel above the floor; bend signs fixed"}
{"n": 2, "what": "atlas v1: torso/head as ray-cast ellipsoid unions, banded shading", "saw": "a pile of shiny balls, a maquette look", "changed": "rounded silhouette + soft 2D height-field light, flatter bands, more strokes"}
{"n": 3, "what": "skeleton + clips + runtime v1, pose sheet of all clips", "saw": "assembles and poses; capsule legs with end outlines read as a jointed mannequin (like swarm 33); neck a pipe; head small", "changed": "side-only outlines, near upper legs under the torso, head 1.2x, neck_dL/neck_dR, head views 68 and 112"}
{"n": 4, "what": "perform v1 (runtime over 768 frames) + geometry tests", "saw": "IK residual up to 18 cm, knee flips (34 cm joint jumps) in the scramble back, forelegs 2.5 cm short of the footprint", "changed": "reach-gated stepping, candidate loop skips blocked legs, diagonal trot >0.4 m/s, knee side by cross product, hock lowers in a crouch, forelegs +1 cm/segment"}
{"n": 5, "what": "render v1 of 16 test frames", "saw": "pipeline whole; person hand almost at the dog muzzle when lying; garden band wasted at the end framing", "changed": "person sits further in (-1.3 m mapped), end framing raised"}
{"n": 6, "what": "both turns frame by frame (3.375-4.4 s, 7.375-8.83 s), cropped", "saw": "every frame reads as a dog; view changes 0->45->90->135 and back by swaps, head leads at 7.4; rear view shows the back and tail", "changed": "kept"}
{"n": 7, "what": "full render v1 + trace + sound + film; checker", "saw": "I1 fails: lie_down measured 24.125 s (head rose while the body dropped, silhouette height measure)", "changed": "lie-across starts 23.62, head lifts after the body is down; lie measured on the body centroid drop -> 23.917"}
{"n": 8, "what": "checker ALL OK; frames from film.mp4 at 17 times, full and cropped", "saw": "turns, refusal back, look-back, lying across, look-in all visible; runtime test: skull top 8 cm ABOVE the withers line on the approach", "changed": "stalk-walk head lowered (neck -32 deg), stalk-walk queued at 14.46 so the head is down before the root moves; full re-render"}
{"n": 9, "what": "repair round 1 (critic: look-in a raised blob; no neck 7.83-8.25; forelegs 3.92; dowel legs; faint paws)", "saw": "look-in now head view 45 (3/4 rear) muzzle level into the room, head top 376-379 px vs 376 at 26.4; neck drawn over the shoulder in rise while view >30 deg; legs repainted tapered, flatter, distal ends feathered into the next segment; paw falls +7 dB", "changed": "look-in yaw -54, neck -4 deg, ears held at 0.72; rise draw-order flag head_over; full re-render; verified on film.mp4 crops at 3.92, 7.9-8.25, 19, 26.4-28.4"}