docs: close mixed-traffic path after short failure

1 files changed, 7 insertions, 0 deletions

diff --git a/PAPER_PLAN.md b/PAPER_PLAN.md
index baf5ebe..8e85aae 100644
--- a/PAPER_PLAN.md
+++ b/PAPER_PLAN.md
@@ -213,3 +213,10 @@ If it passes, revise the abstract and contribution language narrowly:
 If MT-1, MT-2, or MT-3 fails, preserve the current mechanism-only narrative and
 the score of 5/10. No lower traffic ratio, deleted seed, or replacement
 confirmation panel is permitted.
+
+This stop rule has now fired at MT-1. All three signal conditions become
+nonfinite in epoch 1 and end at chance despite passing the calibration,
+predictor-warmup, query, and cost invariants. MT-2 and MT-3 remain untouched.
+The paper therefore retains the mechanism-focused title and 5/10 assessment;
+the controlled standard-ResNet recovery is a disclosed negative result, not an
+active acceptance claim.