Relativity Reframed. Quantum Motion in an Expanding Hyperspherical Universe

Relativity is reframed in an "object-centric" description that takes the object's Compton frequency as primary and treats observer-dependent kinematics as alternative decompositions of a single underlying motion. Compton and de Broglie wavelengths are treated as coupled consequences of motion in an expanding, globally four-dimensional hyperspherical cosmos. A fundamental quantum action step is assumed, so the discrete proper-time interval defines an intrinsic Compton stride, the distance an object is carried with the expanding cosmic hypersurface during each update. The de Broglie wavelength then arises as the relational projection of that same stride into coherent patterning along the locally three-dimensional hypersurface. The associated traveling-wave form, sourced on the past light cone, parallels the structure of free-space electromagnetic traveling fields, and in quasi-static limits naturally yields inverse-square behavior. Implications for intrinsic spin and zitterbewegung are outlined, and connections to entanglement are noted. A new ontological account of time is proposed. VC 2026 Physics Essays Publication.