diff --git a/.agents/skills/multi-agent-mux-stop/scripts/stop_session.sh b/.agents/skills/multi-agent-mux-stop/scripts/stop_session.sh
index b237034..fb0d44b 100755
--- a/.agents/skills/multi-agent-mux-stop/scripts/stop_session.sh
+++ b/.agents/skills/multi-agent-mux-stop/scripts/stop_session.sh
@@ -343,6 +343,12 @@ if purge and purge_uuid:
         ctx = DiscoveryContext(workspace=ws, agent_name=agent, home_dir=home)
         for item in adapter.purge_artifacts(purge_uuid, ctx):
             print(f"purged: {item}", flush=True)
+        # Issue #31: report what still carries the uuid, as orc_onboard does.
+        residual = adapter.residual_artifacts(purge_uuid, ctx)
+        for item in residual:
+            print(f"WARN residual: {item}", flush=True)
+        if not residual:
+            print(f"residual: none (agent: {agent})", flush=True)
         target[adapter.own_key] = None
 elif purge and not purge_uuid:
     print("WARN: --purge-conversation requested but no workspace-scoped UUID resolved; nothing purged", flush=True)