ResultNNUE-class student on existing successor-closed D4 labels: within-root ordering probe

The leaf-affordable NNUE-class student does not reproduce fair D4's within-root ordering from the existing successor-closed labels. Five initialisation seeds of the LeafNet h64/m32 student (571,905 parameters; features from learned-leaf/leaf_features.py) were trained for 30 epochs on the 6,551 training roots of runs/RUN-20260821T085042Z-c5cf0e71/d4q-labels with the preregistered listwise + gap-weighted pairwise + 0.1 MSE loss; the seed with the best calibration-fold top-1 (0xA52E02, 0.3281) was then read once on the 3,030-root held-out panel of that experiment. Held-out top-1 was 0.296 / 0.3011 in the two origin-seed half-folds (gate >= 0.60), pairwise 0.6266 / 0.6259 (>= 0.78), normalised regret 0.3354 / 0.3379 (<= 0.13): every criterion fails in both half-folds. The other four seeds lie between 0.2987 and 0.3135 pooled top-1, all below the 3.4M-parameter afterstate CNN of RS-20260821T104500Z-77d21e90 (0.375) and below exact D1 (0.486). The student is leaf-affordable as claimed (1.27 us per state through the existing d7leaf export and leaf-check), but at this size it holds less of D4's ordering than the CNN did. Per the preregistered failure action: no leaf-affordable NNUE-class student of this size reproduces D4's ordering from these labels; the self-play loop TH-20260821-...-299ed02f stays blocked in its leaf form and its redesign is routed to the larger-student question. Diagnostic tier: the held-out panel had already been read once by the d4q experiment, so this is a diagnostic read on existing data, not new evidence about fresh roots.