diff --git a/.agents/skills/lib_py/delegation/wrapper.py b/.agents/skills/lib_py/delegation/wrapper.py
index 4f5a589..8a8e10e 100644
--- a/.agents/skills/lib_py/delegation/wrapper.py
+++ b/.agents/skills/lib_py/delegation/wrapper.py
@@ -21,8 +21,12 @@ checks that the wrapper is still alive throughout both waits and before each
 side effect, and leaves without closing or publishing once it is gone - as the
 same loops in bash ended with the wrapper.
 
-Stdlib only and Python 3.9 (macOS /usr/bin/python3); registry.py and
-publish_event.py run as the processes the wrapper ran, with its interpreter.
+This module imports only the standard library and runs on Python 3.9 (macOS
+/usr/bin/python3). The wrapper runs it as `python -m lib_py.delegation.wrapper`,
+which imports the package first: lib_py/delegation/__init__.py loads the
+service and with it paho-mqtt, so the wrapper's $PY needs paho - as it always
+did for the subscriber and publish_event.py. registry.py and publish_event.py
+run as the processes the wrapper ran, with its interpreter.
 """
 from __future__ import annotations