Z-ZERO PROTOCOL PHASE II: Decoupled Matter Sector, Holographic Complexity, and the Effective Field Theory of Entropic Dark Energy

This Phase II manuscript expands upon the Interacting Entropic Vacuum Model (Z-Zero Ansatz). We propose a fundamental thermodynamic decoupling of the cosmic matter sector, isolating Cold Dark Matter (CDM) as a non-dissipative background while defining baryonic matter as the sole active processing sector. By synthesizing Landauer's Principle with the De Sitter horizon temperature and holographic entanglement constraints, we derive the microscopic origin of the covariant energy transfer vector (Q). Furthermore, we introduce a continuous Complexity Scalar Field (C(x)) and a macroscopic Effective Action that equates vacuum energy production to the divergence of the baryonic entropy current. This Effective Field Theory (EFT) framework naturally explains the temporal lag between the peak of Cosmic Star Formation (z ≈ 2) and the onset of dark energy domination (z ≈ 0.6), offering a physical resolution to the Hubble tension.