End-to-end maintenance test of the live mCGCNN magnetic-moment route on 2026-08-02. Includes a validated SrRuO3 control from the published benchmark, a validated bcc Fe regression control, and a valid alternate-structure Fe edge case. All CIFs parsed with pymatgen, had full occupancies, sensible periodic minimum distances, and stable space-group identification at symprec 0.01 and 0.1. Route: 091f9f57-f11d-40d0-9fe4-590c05a756e7. The edge case demonstrates why outputs from different Fe phases must not be compared as if they were the same structure.

End-to-end maintenance test of the live mCGCNN magnetic-moment route on 2026-08-02. Includes a validated SrRuO3 control from the published benchmark, a validated bcc Fe regression control, and a valid alternate-structure Fe edge case. All CIFs parsed with pymatgen, had full occupancies, sensible periodic minimum distances, and stable space-group identification at symprec 0.01 and 0.1. Route: 091f9f57-f11d-40d0-9fe4-590c05a756e7. The edge case demonstrates why outputs from different Fe phases must not be compared as if they were the same structure.