docs: GKD verdict — on-policy distillation negative (6.0036)

1.43pp worse than the off-policy rung; the residual-attribution
program closes with every lever measured and negative. Paper B's
on-policy future-work now carries its measured answer.

Author: ronaldtse

docs/RESULTS.md

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+## ara-diac-small-2-gkd — on-policy distillation NEGATIVE: 6.0036 (2026-09-06)
+
+The on-policy rung (GKD: student-generated mistakes scored by the
+teacher, a120384 wiring, 10,995 steps, labels sha e70ce991): teacher
+reproduces 2.289, student **6.0036** full-set, paired bootstrap delta
+3.4083 [3.109, 3.743], p=0 — gate FAILED, and 1.43pp WORSE than the
+off-policy sequence-KD rung it was meant to improve (G2a 4.5701).
+
+This completes the residual-attribution program with a clean pattern:
+every lever tested fails to close the teacher-student gap —
+* classical corpus add (G2b): flat-negative
+* register swap (E6): negative
+* on-policy distillation (GKD): negative, worse than off-policy
+* memory layers (PKM): real but small (0.70pp), below bar
+* epochs: small (0.25pp)
+The residual is not data, not domain coverage, not an off/on-policy
+deficit. It is a property of the compression itself at this rung —
+the honest open question for the paper. On-policy stays listed in
+Paper B's future work with its measured negative attached.