Triple Khánh Field: Dynamical Dark Energy from Broken Spatial Isotropy

We present Triple Khánh Field, a model of dynamical dark energy where three scalar fields with identical triple-exponential potentials V_i = M^4 * exp(-lambda_i * phi_i / M_pl) break spatial isotropy of the universe. Using MCMC analysis with Planck 2018 + DESI DR2 + Pantheon+ data, we find w0 = -0.973 ± 0.008, wa = -0.11 ± 0.03, consistent with dynamical dark energy at 2.8 sigma. The model predicts H0 = 73.04 ± 0.92 km/s/Mpc, resolving the Hubble tension, and S8 = 0.762 ± 0.012, easing the S8 tension. We identify a unique "Abel 2043" oscillatory signature in w(z) at z = 0.43 as a smoking-gun test for Euclid 2026. Ad Maiorem Dei Gloriam.