THE BOUNDARY-DOMINATED ORIGIN OF PHYSICAL REALITY MASS, INERTIA, AND GRAVITATION AS ENFORCED VACUUM CONSTRAINTS

This paper presents a mechanism-first account of mass, inertia, and gravitation based on a single physically enforceable structure: persistent boundary constraints on the quantum vacuum. Without introducing new entities or modifying existing theories, it identifies how stable configurations that exclude or reshape local vacuum modes necessarily generate resistance to acceleration (inertia), quantify mass as the strength of that exclusion, and produce gravitation as a response to spatial gradients in vacuum mode density. All conclusions follow from locality, finite propagation, conservation, and empirically established vacuum effects, showing that these fundamental properties arise as unavoidable consequences of boundary-mediated vacuum enforcement rather than as independent postulates.