(v1.0.2 Update: Numerical precision synchronized for galactic rotation curves (210.7 km/s fix.) Final Installment of the Vortical Research Series (Paper IV) This work presents a unified resolution to the "Dark Sector" anomalies—Dark Matter and Dark Energy—by redefining them as emergent field-interference effects within a discrete spacetime tensor network. By applying the Vortical Gravity framework established in the previous installments, we demonstrate that the observed gravitational discrepancies are structural signatures of the vacuum rather than manifestations of unidentified particles or fine-tuned constants. Key Breakthroughs in this Volume: Non-Particle Dark Matter: We identify Dark Matter as a localized Geometric Stiffening effect (10^82). In high-radiation environments, electromagnetic (EM) flux phase-locks with spacetime nodes, creating "apparent mass" through non-linear field-coupling, thereby eliminating the need for WIMPs or axions. The 10^122 Resolution: The "Vacuum Catastrophe" is resolved by identifying the Expansion Pressure as a second-order geometric scaling of the cosmic time-horizon. We prove that the observed energy density is the square of the temporal ratio, aligning Planck-scale energy with current observations without fine-tuning. The G_max Recovery (Democratic Gravity): We derive a universal vacuum potential, G_max as 5.46 times G_0. This work demonstrates that gravity is "liberated" in low-density regimes, providing the necessary centripetal acceleration to match the rotation curves of the Milky Way, M31, and M33 with high numerical precision. Hubble Tension Solution: The discrepancy between H_early and H_late is resolved through the temporal evolution of lattice un-damping as cosmic energy density attenuates over time. The Absolute Quadrilogy: This paper completes the four-part journey from the microscopic hardware of the universe to its macroscopic expansion: Paper I: Establishment of Lattice Stiffness and the G unit. Paper II: Resolution of Black Hole Singularities via the Vortical Radius (r_v). Paper III: The Volumetric Vortex and the emergence of Light from Space-time Flux. Paper IV: The Emergent Dark Sector and the unified Cosmological Bridge. Methodology: Numerical validation utilizes Gaia DR3 stellar kinematics, Planck 2018 cosmological parameters, and high-resolution HI surveys (Corbelli et al.). The model provides a parsimonious, renormalization-free alternative to General Relativity, bridging the gap between the Planck scale and the cosmic horizon.