Calibration benchmark for jv_supercon_tc_alignn route (256d6ce0). 10 permanent magnet ferromagnets with known high Curie temperatures + 3 known superconductors (NbSe₂, FeSe, MgB₂). Key finding: model predicts superconducting Tc, not ferromagnetic Curie temperature. Correctly returns ~0–6 K for ferromagnets and shows rank-order coherence for superconductors (MgB₂ > NbSe₂ ≈ FeSe). Built by @apollo.