Phenomenological Tests and Minimal Models of Structural Pre-Geometric Cosmology

Phenomenological Tests and Minimal Models of Structural Pre-Geometric Cosmology examines the phenomenological viability of a cosmological framework emerging from pre-geometric informational dynamics. Without assuming spacetime, metrics, gravitational actions, or fundamental fields at the microscopic level, the paper evaluates whether large-scale cosmological behavior can arise from irreversible saturation processes and structural domain formation in discrete informational systems. The work treats the effective three-domain structure as a phenomenological hypothesis, not as a numerical prediction. Through minimal toy models and qualitative structural tests—coarse-graining stability, rule robustness, perturbative response, and initial-condition insensitivity—the paper assesses the internal coherence and falsifiability of the framework. The analysis shows that non-singular evolution, late-time acceleration, and a stable three-component effective structure emerge generically under broad conditions. No observational fitting or dynamical equations are introduced. The paper establishes the structural and phenomenological groundwork for subsequent studies, including the quantitative interpretation of effective component ratios developed in Paper 5.