Unification Consequences of Primitive Calibration and Closure Theory

This paper is the fourth work in the modern Closure Theory sequence. It brings the primitive calibration of mass, length and recurrence scales together with the developed Closure Theory architecture and subjects the resulting construction to a common evidential standard. The analysis begins from the primitive triplet {m0, L0, T0} and the calibrated correspondence with {h, c, G}. A primitive SI charge scale is introduced without defining a new unit of charge, allowing gravitational and electromagnetic inverse-square couplings to be placed on a common dimensional ledger. This produces an exact gravitational-electromagnetic interaction-scale identity under the adopted calibration and isolates dimensionless electromagnetic and gravitational publication ratios. The paper then asks what Closure Theory itself contributes beyond these calibration identities. The intrinsic ACORN structure, hyperbolic and circular sectors, FourWay HyperCirc, Intrinsic Weave Equation (IWE), Canonical Transport Equation (CTE), Closure-Frame Transport Equation (CFTE), closure passports and relational publication architecture are brought together to examine particle closure, charge magnitude and sign, inertial-gravitational equivalence, and the gravitational-electromagnetic hierarchy. Particular attention is given to separating exact identities from physical derivations. Numerical agreement is not treated as proof, dimensional re-expression is not treated as new physics, and unresolved publication maps are retained explicitly as open problems. The electron and proton closure structures, a conditional fine-structure numerical witness, the common intrinsic mass carrier, and the requirements for a future equivalence theorem are assessed within this framework. The resulting picture is not presented as a completed unification. Rather, the paper establishes a consolidated evidential ledger for Modern Closure Theory: identifying what follows from primitive calibration, what is established within the present closure architecture, what remains conditional, and which physical maps must still be derived.