Workflow for SMSimulator IPS veto geometry placement and Geant4 position scanning. Use when modifying IPS geometry, target-reference-only placement, QMD dbreak/geminiout conversion, no-forward small-b scoring, scan scripts under scripts/analysis, WRL example export, or interpreting elastic leakage versus small-b IPS hit rate for the 3deg_1.15T Sn124 study.