A Monster-Symmetric Admissibility Formulation of the SEXA Unified Field Theory: Operator-Glyph Closure, Σ₆₀ Exciternion Logic, and Falsifiable Reduction to General Relativity, Quantum Field Theory, and Yukawa Interaction Regimes. JAM. 2026;25:21-34. doi:10.24297/jam.v25i.9887