Early Saturation of the Informational Vacuum Finite-Capacity Dynamics in the Pre-Asymptotic Regime

This work constitutes Block III (Early Saturation) of a structured theoretical framework describing a vacuum with finite response capacity and intrinsic relaxation time. We analyze the early-time, pre-asymptotic regime in which the informational vacuum approaches saturation, focusing on the dynamical transition from linear response to nonlinear capacity-limited behavior. In this regime, the vacuum does not collapse nor require exotic components, but reorganizes through finite relaxation and memory effects governed by the same underlying field equations developed in previous blocks. The analysis shows that early saturation naturally generates effective expansion, delayed potential reconstruction, and suppression of divergences without invoking ad-hoc inflationary fields or dark components. The framework emphasizes dynamical self-regulation driven by finite informational capacity rather than fine-tuned initial conditions. This block does not perform cosmological data fitting. Instead, it establishes the theoretical consistency and causal structure of early saturation dynamics, preparing the ground for later phenomenological and observational confrontation. Together with Blocks I–II, this work completes the foundational description of saturation-driven vacuum dynamics across excitation regimes.