diff --git a/.abcd/rules.json b/.abcd/rules.json
index 5d8a9df..b5deb92 100644
--- a/.abcd/rules.json
+++ b/.abcd/rules.json
@@ -8,7 +8,7 @@
         "Substantive work goes on a branch + PR; never force-push, never --no-verify.",
         "Never commit or push unless asked.",
         "PRs merge by squash: one PR, one purpose, one commit on main.",
-        "PR bodies, like commits, carry no AI footers or session links; disclosure is the Assisted-by commit trailer, nothing else."
+        "PR bodies end with the same Assisted-by trailer as commits (the global attribution gate requires it, and refuses a body without one); no other AI footers and never a session link."
       ]
     }
   },
diff --git a/.abcd/work/DECISIONS.md b/.abcd/work/DECISIONS.md
index fa89237..cdc2139 100644
--- a/.abcd/work/DECISIONS.md
+++ b/.abcd/work/DECISIONS.md
@@ -1675,3 +1675,4 @@ Architecture-shaping decisions graduate to an ADR under
   `report` rendered them under the utterance. Coloured `ls` output rendered as
   CSI residue, as designed and documented — logged as `iss-2609120520334220`.
   The 3.x (v3) recorder is not installed, so v3 stays fixture-verified only.
+- 2026-09-15 — PR bodies carry the `Assisted-by:` trailer as their last line, matching the global attribution gate that refuses a body without it; the earlier "no footer in PR bodies" rule contradicted that gate and is replaced. Session links stay out of PR bodies and commits.