diff --git a/.github/workflows/pr-auto-review.yml b/.github/workflows/pr-auto-review.yml
index 723c47c2..7e193d2e 100644
--- a/.github/workflows/pr-auto-review.yml
+++ b/.github/workflows/pr-auto-review.yml
@@ -30,7 +30,7 @@ on:
   # to catch CI turning green on a PR.
   # TODO: replace "CI" with your repository's CI workflow name(s).
   workflow_run:
-    workflows: ['CI']
+    workflows: ["CI"]
     types: [completed]
   # check_suite covers third-party CI checks (e.g. SonarCloud, external apps).
   check_suite:
diff --git a/.prettierignore b/.prettierignore
index 68445de9..c774eb16 100644
--- a/.prettierignore
+++ b/.prettierignore
@@ -14,3 +14,10 @@
 # guard. The canonical uses single-quoted YAML scalars; Prettier would rewrite them
 # to double quotes and re-introduce surface drift, so it must not reformat this file.
 .github/workflows/feature-ideation.yml
+# pr-auto-review is a standards-owned caller stub whose centrally-owned
+# `on:`/`permissions:` surface is enforced byte-identical against
+# petry-projects/.github/standards/workflows/pr-auto-review.yml by the stub-drift
+# guard. The canonical uses double-quoted YAML scalars (e.g. `workflows: ["CI"]`);
+# Prettier (singleQuote) would rewrite them to single quotes and re-introduce
+# surface drift, so it must not reformat this file.
+.github/workflows/pr-auto-review.yml