Abstract
Volume III extends the Temporal–Density Framework to cosmology, showing that the fixed 5:1 SU(3) compression imbalance between dark and baryonic sectors generates a universal entropy gradient. This gradient governs galactic morphology, large–scale flows, CMB coherence, and late-time horizon growth. Dark–matter compression, baryonic overreaction, and U(1) horizon accumulation are unified as geometric consequences of a single temporal substrate, completing the cosmological architecture of the framework.