The TopMod Framework: Effective Geometric Modulation of Photon Propagation and Experimental Test Channels

This repository contains the foundational document triad for the TopMod project. It proposes a minimal phenomenological framework where local space-time structure acts as an active geometric background for photon propagation. The framework establishes a directly testable laboratory signature: a direction-dependent phase or frequency shift with a characteristic second-harmonic rotational structure (cos(2θ)) and linear scaling with propagation length. The dataset includes: Main Paper: Formulates the theoretical minimal model and the core logic of falsifiability. Technical Addendum: Clarifies reference frame bifurcation (Laboratory-fixed vs. Inertial) and maps the model to established Standard-Model Extension (SME) bounds. Experimental Working Note: Translates the phenomenology into a concrete test protocol using evanescent microwave waveguides under cut-off, including a systematic error budget for VNA-based measurements. The TopMod framework is strictly designed to be falsifiable by precision laboratory experiments.