Iteration 03 of the GCM + O-information orthogonality-selection loop (S0–S5).
Walk-forward stability after both leaks removed (train-only selection, disjoint purged folds), with the future-perturbation invariant + noise-null leakage gate green. GCM OOS Jaccard 0.635 (shuffled-null 11/110 ~clean); O-info 0.772 (shuffled-null 0). Both clear the 0.20 floor in all 7 regimes.