This manuscript formalizes the transition of Direct Universal Compression Theory (DUCT) from an empirical model to an Absolute First Action Principle. By anchoring the scalar compression field (η) to the Golden Ratio (ϕ) and correcting for observer-dependent temporal metrics, we eliminate the need for empirical interpolation functions or cold dark matter (CDM) halos. We demonstrate that galactic rotation curves and biological vortex structures are emergent geometric consequences of a single unified field equation. The theory achieves an unprecedented fit with an RMSE of 0.675 km/s across five orders of magnitude of baryonic mass.