Principle of Complementary Realities: A New Paradigm for Physics (Version 5.0: Universal Industrial Evolution Edition)

Modern physics faces a fundamental schism between its two greatest theories: General Relativity and Quantum Mechanics. This paper proposes a new theoretical framework, the Principle of Complementary Realities (PoCR), which reframes this disconnect not as a "contradiction," but as "complementary aspects" of a single entity viewed at different scales. Based on five fundamental axioms, this principle uniformly describes all phenomena in the universe as a "Spectrum of Reality" governed by a single parameter: Local Energy Density (E_L). The core of this theory proves that the single critical point E_c1 ≈ 10^18 J/m^3 is not merely a phenomenological convergence, but the "only solution" mathematically required by three different fundamental principles of physics (RG Flow, Holographic Principle, Computational Complexity) as a necessity. In v5.0, this theory dramatically extends its scope beyond cosmological scales to materials science and industrial applications. This paper demonstrates that over 16 independent observational phenomena—including LRDs, the BEC anomaly, neural criticality, as well as the cosmic ray acceleration limit observed by LHAASO (P-13), the geometric control of supernovae (P-14), the mobility reversal in molecular ion batteries (P-15), and strength emergence in material mechanics (P-16)—can all be unified and explained as phase transitions near this E_c1 critical point.