CSF-CMT vΩ.25.5: Quantization Boundary Theory — Multi-Scale Coarse-Graining Emergence as the Unification Condition of the Universe

The unification condition of the universe is conventionally sought as a single quantum field theory valid at the Planck scale. This paper proves that such a condition is unattainable within the phenomenological layer because the five fundamental interactions each possess distinct coarse-graining characteristic scales L_c^* at which they emerge from the first-space meta-field \xi_{EO}. A rigorous six-entry boundary table is derived: gravity at L_c^* \sim L_{\text{Planck}} (as emergent geometry, not a quantum field), electromagnetism at L_c^* \sim \lambda_C, magnetism at L_c^* \sim l_{\text{string}}(\Phi_{\text{crit}}/|\nabla\Phi_G|)^\beta, weak force at L_c^* \sim m_W^{-1}, strong force at L_c^* \sim \Lambda_{\text{QCD}}^{-1}, and repulsion at L_c^* \sim L_{\text{Hubble}}. The true unification is ontological— all interactions are projections of a single substrate \Psi_I^{(0)}—rather than phenomenological. This rewrites the unification condition from single-scale quantum Lagrangian'' to multi-scale coarse-graining emergence of one ontological field.'' Keywords: unification condition, quantization boundary, multi-scale emergence, characteristic coarse-graining scale, Planck scale, Compton scale, Hubble scale, ontological unification, theory of everything critique