diff --git a/src/content/docs/guides/encrypted-group-messaging-marmot.mdx b/src/content/docs/guides/encrypted-group-messaging-marmot.mdx
index a4892ea8..ad636ed6 100644
--- a/src/content/docs/guides/encrypted-group-messaging-marmot.mdx
+++ b/src/content/docs/guides/encrypted-group-messaging-marmot.mdx
@@ -151,3 +151,7 @@ interoperate when they don't.
 - Stand up your harness with [Get started with Goose](/guides/get-started-with-goose/).
 - Read the protocol itself: [Marmot](/catalog/marmot/) (and its MIPs), pinned at
   commit `21a67b2`.
+
+{/* i18n-security-gate live acceptance test (M0 follow-up, PR #58): content-neutral
+    edit to a security_sensitive page. Expected: two-review-gate stays RED until
+    two distinct non-author approvals exist, then flips green. */}