The Systemic Emergence of Spacetime, Additive Matter Dynamics, and the Causal Origin of Time: Planck-Scale Modeling and the Four-Layer Cosmic Architecture

In standard cosmology and general relativity, spacetime is conventionally treated as a continuous background manifold, while phenomena such as dark energy, the baryon asymmetry, and the fundamental nature of time remain addressed through separate hypotheses. In this paper, we propose a comprehensive systemic and discrete framework based on the Axiom of Priority. Within this model, space and matter are established as primary, foundational categories, whereas time, antimatter, and wave-fields emerge as secondary phenomena generated by micro-interactions at the Planck scale ($t_p \approx 5.39 \times 10^{-44} \text{ s}$). Furthermore, contrary to the classical assumption of absolute matter-antimatter annihilation, we introduce an additive interaction model governed by a structural survival coefficienl ($\eta_{micro}$), which acts as the physical engine driving cosmic expansion and accounting for the Hubble parameter $H(t)$ without requiring an independent cosmological constant. By mapping cosmic structures and subatomic layers to a four-tier network architecture, we demonstrate full thermodynamic consistency, quantum mechanical alignment, and compatibility with recent observational data from the DESI collaboration. Keywords: Emergent Time, Axiom of Priority, Additive Matter-Antimatter Dynamics, Hubble Parameter, Cosmic Network Architecture, Open Thermodynamic Systems