Blue Shift and Light Resonance in USP Field Theory

This document expands USP Field Theory into the optical domain, interpreting redshift and blueshift not as Doppler or gravitational effects but as geometric consequences of field compression and relaxation. Light is described as an analog resonance ripple whose apparent wavelength reflects local spin-tension geometry. The paper introduces quantitative field decay and compression laws, reformulates prism dispersion as lattice re-emission, and establishes the First Law of Light. Supported by the Δf mechanism and resonance scaling from prior USP works, it unifies color, energy loss, and cosmic dimming under a single resonance framework.