diff --git a/REVIEW.md b/REVIEW.md
index 29c8d9d..3354582 100644
--- a/REVIEW.md
+++ b/REVIEW.md
@@ -64,3 +64,5 @@ hand-test). Acceptance "a recipe deployed via abra is reachable over HTTPS at
 Verdict: **M1 PASS.** Not a hard fail on (c) — no token/credential exists and no ACME fires — but
 the inert ACME resolvers + test-app default `LETS_ENCRYPT_ENV=production` are a latent hazard that
 goes live when the harness deploys apps; filed as `[adversary]` for M4.
+
+<!-- M2 live-trigger probe @2026-05-26T23:30Z: this push should create Drone build #4 -->