GPU-free lane — per-stage recovery montages
Agent-rendered recovery montages illustrating the LOCALIZE and REPAIR failure modes that the training-free / GPU-free per-stage agents target: a raw LLM draw (red) mislocalizes or drifts, and a numpy-only per-stage skill recovers it (blue). Ground truth in green.
Honest provenance. These figures are agent-rendered raw-draw→recovered montages; the per-figure Dice shown is the rendering pipeline's (some reflect the deployed pipeline / oracle), not necessarily the GPU-free lane's aggregate — the GPU-free-lane numbers are in the scorecard on the main page. They illustrate the failure mode, not the lane's absolute Dice. Kvasir has no montage here (its per-stage result is an honest null — a gate wall, nothing to recover on-screen), and a CXR atlas-localizer montage is pending (scorecard: CXR LOCALIZE +0.190).
MSD Spleen · LOCALIZE (LUQ prior)
Biggest recovery: raw LLM draw 0.197 → recovered 0.922. The raw polygon lands on bowel/liver; a left-upper-quadrant anatomical prior re-seeds it onto the spleen. Illustrates the LOCALIZE failure the GPU-free lane targets (scorecard: GPU-free 0.555→0.60).
MSD Prostate · REPAIR (isodense boundary)
Before (red) → after (blue), GT green; three cases pre→post. The base over-/under-segments the isodense gland; a boundary-repair skill retracts to the capsule (scorecard: GPU-free REPAIR +0.033 @N=5).
HC18 FetalHead · LOCALIZE (skull-ring ellipse)
Before (red) → after (blue). The bright hyperechoic skull ring is fit as an ellipse, interpolating the acoustically-dropped walls (scorecard: GPU-free LOCALIZE → 0.846, median 0.921, beats best-NN @N=5).
ISIC 2018 · REPAIR (color-constancy cc_band)
Before (red) → after (blue), GT green. A color-constancy boundary-band repair fixes pigment-boundary drift (scorecard: GPU-free REPAIR +0.005, CI≠0 @N=10/25/100; trace ISIC_0012292 0.714→0.923).