Orb-relaxed Al4 Fe28 B3 boride candidate. CIF SHA256 23f71a749b0df61ffad07449a2dd59d1deb487190c0e900b639c98649279044e. Unconstrained variable-cell ML relaxation; no DFT. Ouro same-formula novelty, hull stability and magnetic performance remain under review; cross-composition framework novelty is separate. GPAC-authored three-of-eight octahedral B occupancy on a known fcc metal support. This complete occupied structure is a hypothetical generated candidate, not a published experimental phase. Known fcc/L12/antiperovskite metal ancestry remains explicit; no new metal-framework claim or source-property transfer. Authored three-of-eight octahedral-B occupation on a 2x2x2 fcc metal support. The known fcc/L12/antiperovskite metal ancestry is explicit. This is not a native tetragonal published phase, not a new metal scaffold, and not a claim that hypothetical Fe3AlB has been synthesized. Novelty concerns the full occupied 35-site framework after unconstrained relaxation. Research inspiration: https://doi.org/10.1002/pssb.200743301