MAV-MCC: From String Theory to Coherent Frequency Fields — Scientific Freeze v0.1-R2

This preprint presents the v0.1-R2 public scientific freeze of the MAV-MCC bridge from string-theory-inspired duality structures to coherent frequency fields. The work does not claim to derive string theory or to identify MAV-MCC variables directly with string momentum/winding modes. Instead, it isolates a structural correspondence based on a duality-compatible logarithmic coordinate and its bounded representation. The frozen core is defined by: x = 1/2 ln(C/D), with G = sqrt(CD),C = G e^x,D = G e^-x, and the equivalent bounded coordinates Xi = tanh(x),B = sech(x), satisfying Xi^2 + B^2 = 1. For the unregularized D/C coherence functional, H_DC^(0) = 2CD/(C + D), the normalized relation becomes H_DC^(0)/sqrt(CD) = sech(x). The frequency bridge is frozen as ω/ω* = e^x, with the conjugate transformation ω ↔ ω*^2/ω. For massive modes only, when ω_m is explicitly defined through the rest energy, m c^2 = ħω_m, the corresponding mass ratio is m/m* = ω_m/ω* = e^x. This definition must not be confused with the frequency of a propagating photon, whose invariant rest mass remains zero. The release also freezes the methodological boundary for the next stage: the 4S+4T MAV-MCC geometry, articulated through 256 cuspids, must generate the coordinates x_n without using observed particle masses as inputs. The target-facing fit count is therefore N_fit = 0. The package includes the scientific freeze document, machine-readable specifications, validation scripts, numerical algebra checks, provenance information, and SHA-256 checksums. Status: PUBLIC SCIENTIFIC FREEZE.Version: v0.1-R2.