diff --git a/.github/workflows/pr-review-trigger.yml b/.github/workflows/pr-review-trigger.yml
index 1efcce44c..c17602025 100644
--- a/.github/workflows/pr-review-trigger.yml
+++ b/.github/workflows/pr-review-trigger.yml
@@ -5,10 +5,6 @@ on:
   pull_request_review_comment:
     types: [created]
 
-concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.run_id }}
-  cancel-in-progress: true
-
 permissions: {}
 
 jobs:
diff --git a/.github/workflows/pr-review.yml b/.github/workflows/pr-review.yml
index ddd9184a1..6b3a7e296 100644
--- a/.github/workflows/pr-review.yml
+++ b/.github/workflows/pr-review.yml
@@ -6,6 +6,10 @@ on:
     workflows: ["PR Review - Trigger"]
     types: [completed]
 
+concurrency:
+  group: pr-review-${{ github.event.issue.number || github.event.workflow_run.pull_requests[0].number || github.run_id }}
+  cancel-in-progress: true
+
 permissions:
   contents: read # Required at top-level to give `issue_comment` events access to the secrets below.
 
diff --git a/scripts/workflow-lint.sh b/scripts/workflow-lint.sh
index b60831f8e..ff1ca9ee9 100755
--- a/scripts/workflow-lint.sh
+++ b/scripts/workflow-lint.sh
@@ -6,7 +6,9 @@
 #
 #   1. concurrency:           every PR-triggered workflow declares a
 #                             concurrency: group (AGENTS.md §
-#                             GitHub Actions);
+#                             GitHub Actions), EXCEPT pr-review-trigger.yml
+#                             which intentionally runs all events to completion
+#                             (see PR #2789);
 #
 #   2. pinned-by-sha:         every third-party `uses:` reference is
 #                             pinned by a 40-char SHA, not a tag/branch
@@ -64,8 +66,18 @@ note() {
 # yq-based so it runs in the lint job without extra deps; the
 # trade-off is a false positive if `pull_request` appears in a
 # comment, which we accept.
+#
+# EXCEPTION: pr-review-trigger.yml is exempt from this check because
+# it intentionally runs all events to completion (the workflow is cheap,
+# and deduplication happens downstream in pr-review.yml). See PR #2789.
 for f in "$WORKFLOWS_DIR"/*.yml "$WORKFLOWS_DIR"/*.yaml; do
   [ -e "$f" ] || continue
+  
+  # Skip pr-review-trigger.yml
+  if [[ "$f" == *"pr-review-trigger.yml" ]]; then
+    continue
+  fi
+  
   if grep -qE '\bpull_request\b' "$f"; then
     if ! grep -qE '^\s*concurrency:' "$f"; then
       note "$f" "PR-triggered workflow has no concurrency: block (AGENTS.md § GitHub Actions)"