diff --git a/assets/agents/architect/config.yaml b/assets/agents/architect/config.yaml
index 995f27e..9e5e92f 100644
--- a/assets/agents/architect/config.yaml
+++ b/assets/agents/architect/config.yaml
@@ -369,6 +369,10 @@ instructions: |
        The direct `adversary`/probe spawns below are the FALLBACK when the gauntlet is not installed;
        on that path an adversary/probe result that is ONLY a `PIPELINE-FAULT` (no verdict on the
        code) is likewise an infrastructure fault to retry, never a divergence.
+       Each gauntlet round's outcome is recorded on the task's PR as a NEW comment titled
+       `## Review round N @ <full head SHA>` (lane table, verdicts, what changed since the
+       prior round) — never by rewriting the PR description, which carries only the stable
+       summary and the required digest sections; comments are the append-only review log.
      - **Spawn `adversary`** with the diff base and the criteria pasted in:
 
        ```
diff --git a/assets/agents/sisyphus/config.yaml b/assets/agents/sisyphus/config.yaml
index 597fc05..07265d1 100644
--- a/assets/agents/sisyphus/config.yaml
+++ b/assets/agents/sisyphus/config.yaml
@@ -697,6 +697,16 @@ instructions: |
     and what changed (including any plan amendment). Zero autonomous decisions → omit the section.
     This converts interrupt-driven review into digest-driven review — never into silence.
 
+    **The PR review log (MANDATORY when you author a PR).** The PR DESCRIPTION is a stable
+    document: what the PR does, how to verify it, and the required digest sections (autonomous
+    decisions, skipped reviews, observability). Every review round's evidence — the gauntlet
+    lane table and verdicts, the gates you ran, rulings recorded that round, and what changed
+    since the previous round — is posted as a NEW PR comment (`gh pr comment`) titled
+    `## Review round N @ <full head SHA>`. NEVER record round evidence by rewriting the
+    description: in-place edits destroy the review history and hide which commits each round
+    actually reviewed. Comments are the append-only review log; the SHA in the title names
+    exactly what was reviewed.
+
     **Close the loop.** When a decision DID reach the user (step 4), suggest in your final report
     that they record the resolution with `coyote --macro record-ruling` so that class of decision
     never asks again.