Proves that the additive complement involution on the digital root ring DR9 = Z/9Z acts as exact complex conjugation on the character group: chi_k(phi9(n)) = chi_k(n)* for all k, n. Establishes a three-class unit group filtration (units, zero-divisors, kernel) and verifies all primitive Gauss sums lie on a circle of radius 3 in C. Identifies chi3 as the self-conjugate character — the algebraic signature of voluntary constraint reduction, corresponding to the Bird of Hermes mechanism. Connects to conductor-9 L-functions and the Pe=1 critical line. 6 falsifiable predictions.

Part of the Void Framework research project (MoreRight DAO).