OS System / ε-Model — Chapter 46 — Cube Synchronization, Decimal Propagation and Structural Closures

This document records a series of direct numeric closure calculations involving cube hierarchies, decimal propagation, reversible normalization chains, time-block convergence, orbital bridge structures, and light-channel scaling relations. The work focuses on repeated structural reappearance of the cube nodes: 8 = 2³ 27 = 3³ 64 = 4³ 216 = 6³ The calculations examine: cube-linked bridge propagation, reversible 3600 time-block closures, 1/6 decimal-family transitions, 499 structural channel relations, Earth bridge synchronization regions, light–orbit–rotation closures, decimal-scale transfer behavior, preservation of numeric structure across projection scales. All calculations are recorded exactly as performed without symbolic reinterpretation. The document is distributed under: IRCH Public Research License 1.0 The work may be read, cited, and shared only in complete unchanged form with the license attached.