Private transition-metal boride candidate (Mo-Mn magnetic boride variant). B remains fixed on TCTP centers. Local Orb-v3 conservative-20 OMat variable-cell relaxation: converged=true, achieved max force 0.01425 eV/A, max stress 0.00612 eV/A^3; B CN9 2/2 and Mn CN12 3/3 survive; legacy topology fingerprint unchanged. MLIP topology survivor only, not DFT, magnetic-order, or stability evidence. Raw SHA-256 88b592aa837202a7a1b952f258d130fa974622ed1ba6e58bd5e8b2f70a78c797