diff --git a/.github/AGENTS.md b/.github/AGENTS.md
index f28cc01..a451480 100644
--- a/.github/AGENTS.md
+++ b/.github/AGENTS.md
@@ -10,6 +10,7 @@
 - `actions/`: local composite actions shared by workflows in this repository.
 - `ISSUE_TEMPLATE/`: GitHub issue forms and issue-template chooser configuration.
 - `pull_request_template.md`: default pull request checklist for Bachkator changes.
+- `always-open-pr.md`: marker file for the intentionally long-lived example PR branch.
 
 ## Local Contracts
 
diff --git a/.github/always-open-pr.md b/.github/always-open-pr.md
new file mode 100644
index 0000000..c3c5164
--- /dev/null
+++ b/.github/always-open-pr.md
@@ -0,0 +1,7 @@
+# Always-Open Example PR
+
+This file exists only on the `example/always-open-pr` branch.
+
+The pull request for this branch is intentionally kept open as a stable example PR for testing repository automation, branch protection, notifications, and review flows.
+
+Do not merge this PR.