BU52 Reality Interface Objects as Low-Entropy Projection States under B_U Ontic Indivisibility, Descent Through Projection Strata, and the Reclassification of Light-Speed Boundary, Quantum Readout, Particles, Fields, and Formal Systems

This paper develops BU52 as a structural reclassification of reality-interface objects under Single-Universe Boundary Consistency, B_U. Its central claim is that all observable objects, fields, particles, quantum readouts, light-speed boundaries, topological defects, mathematical structures, and information systems are low-entropy projection states formed after total reality passes through B_U, B_0, D(M), microscopic zeroing, finite projection, and settlement closure. The ontic stratum is treated as an indivisible total-reality standing domain; it is not assembled from particles, fields, objects, velocities, or formal systems. These entities arise only after descent through projection strata. BU52 formalizes this descent as a layered chain from total reality to boundary consistency, dynamic-completeness audit, resolution-limited projection, and backward-mirror observable reality. Each descent increases readability and settlement stability while reducing access to ontic totality. Reality-interface objects are therefore defined as stable low-entropy interface states: they obtain coherence, settlement, and standing only after fast microscopic variables are zeroed and slow coherent components enter retained chains. The paper further reclassifies the speed of light c. It is not an ontic limit of B_U, but the maximal admissible reality-update gradient in the appearance-side manifestation stratum. It bounds local causality, signal propagation, object-boundary update, and field interaction within the projection layer; it does not limit the boundary-consistency adjudication of total reality. Quantum structure is classified as discrete resolution readout; particles and fields as stable retained states; topological defects as local manifestations of closure pressure; and mathematical or informational systems as lower-order formal replication interfaces. BU52 concludes that observable reality is the stable manifestation of total reality inside finite projection windows.