diff --git a/planning/index.py b/planning/index.py
index a1632e1..f10f5e0 100644
--- a/planning/index.py
+++ b/planning/index.py
@@ -1,4 +1,4 @@
-# ruff: noqa: INP001, D212  # planning/ is not a Python package; D212/D213 conflict differs from faststream-outbox
+# ruff: noqa: INP001, D212  # planning/ is not a Python package; the module docstring uses the D213 (second-line summary) style, so D212 is suppressed
 """
 Generate the planning index from frontmatter.