diff --git a/src/transforms/feature.py b/src/transforms/feature.py
index c4eeb77..4e7bd35 100644
--- a/src/transforms/feature.py
+++ b/src/transforms/feature.py
@@ -1 +1,3 @@
 # src/transforms/feature.py — auto-generated stub
+
+# update 3 (2026-04)