Iteration 04 of the GCM + O-information orthogonality-selection loop (S0–S5).
The decisive gate. On the only non-circular ground truth — the exact identity volume = buy_volume + sell_volume (verified to 2.2e-16) — across 110 cells: GCM value-add instances 0 (0/330 construction pairs baseline-orthogonal); O-info 0 (0/110 triplets pairwise-hidden). The identity is 100% Pearson-visible, so value-add over the baseline cannot be demonstrated — not a failure of the detectors, the test lacks a valid positive case. → both WATCH.