docs: retire backup-pathway reading (post-revision honest update; recovery does not survive revised nothing-removed standard)

README.md

@@ -56,9 +56,14 @@ added by the **additive** patch in `patches/` (the official `id`/`pred` fields a
 logic are untouched; patched reruns reproduce the official aggregates exactly, 12/12 checked).
 This is what makes the chance-null analysis possible: for answers the single-pass model got
 wrong and iteration *changed*, a memoryless re-roll lands on gold ~25% of the time (5 options).
-Recovery at ~25% = re-rolled noise; recovery far above = real signal. Both verdicts occur in
-this data — ~25% in the three healthy-write seeds, 37–45% in the collapsed-write seed —
-which is the evidence behind the model card's "iteration as a backup pathway" note.
+Recovery at ~25% = re-rolled noise; recovery far above = signal. Both verdicts occur in
+this data **under the pre-revision item set** — ~25% in the three healthy-write seeds, 37–45% in the
+collapsed-write seed — which was the evidence behind the model card's original "iteration as a backup
+pathway" note.
+
+**Post-revision update (2026-07-09):** under the leaderboard's revised standard (drop "nothing"-gold
+items) the 37–45% cells fall to 23.4–24.7% ≈ null; the model card note has been updated accordingly and
+the backup-pathway reading retired. The per-item files here let you reproduce both readings.
 
 Recompute it yourself: