diff --git a/.prettierignore b/.prettierignore
index 4412b3a5..21171e7e 100644
--- a/.prettierignore
+++ b/.prettierignore
@@ -33,3 +33,10 @@
 # central byte-identity stub-drift guard. Prettier would collapse that gap and
 # reflow comments, re-introducing drift, so it must not reformat this file.
 .github/workflows/persona-mention.yml
+# pr-review is a standards-owned caller stub copied VERBATIM from
+# combsmith/.github/standards/workflows/pr-review.yml. The canonical uses
+# double-quoted YAML scalars and a two-space gap before the `# NOSONAR` markers;
+# Prettier would rewrite both, re-introducing drift, and the CI autofix job
+# cannot push workflow-file changes (no `workflows` permission), so it must not
+# reformat this file.
+.github/workflows/pr-review.yml