From 17af8e97be52466c69a413ad75e4d6f21e6a69bc Mon Sep 17 00:00:00 2001
From: Eric Crosson <ericcrosson@bitgo.com>
Date: Thu, 25 Jun 2026 16:34:24 +0000
Subject: [PATCH] chore: add stale PR workflow

Adds .github/workflows/close-stale-prs.yaml to mark PRs as stale after
7 days of inactivity and close them 7 days later. Draft PRs are exempt.
This keeps the PR queue clean as AI agent throughput increases.

Adds .github/actionlint.yaml to declare ubuntu-slim as a known self-hosted
runner label, silencing the actionlint runner-label warning.

Ticket: AI-595
Session-Id: 0b91aa81-3ac0-4542-9279-6c56f778d001
Task-Id: dc650354-37d7-49f1-a77f-25aa8d4ea0f9
---
 .github/actionlint.yaml                |  3 +++
 .github/workflows/close-stale-prs.yaml | 30 ++++++++++++++++++++++++++
 2 files changed, 33 insertions(+)
 create mode 100644 .github/actionlint.yaml
 create mode 100644 .github/workflows/close-stale-prs.yaml

diff --git a/.github/actionlint.yaml b/.github/actionlint.yaml
new file mode 100644
index 00000000..f5709648
--- /dev/null
+++ b/.github/actionlint.yaml
@@ -0,0 +1,3 @@
+self-hosted-runner:
+  labels:
+    - ubuntu-slim
diff --git a/.github/workflows/close-stale-prs.yaml b/.github/workflows/close-stale-prs.yaml
new file mode 100644
index 00000000..4e0cdf4b
--- /dev/null
+++ b/.github/workflows/close-stale-prs.yaml
@@ -0,0 +1,30 @@
+name: Close stale PRs
+
+on:
+  schedule:
+    - cron: '0 1 * * *'
+  workflow_dispatch:
+
+jobs:
+  stale:
+    runs-on: ubuntu-slim
+    permissions:
+      issues: write
+      pull-requests: write
+    steps:
+      - uses: actions/stale@v10
+        with:
+          days-before-issue-stale: -1
+          days-before-issue-close: -1
+          days-before-pr-stale: 7
+          days-before-pr-close: 7
+          stale-pr-label: stale
+          stale-pr-message: >
+            This PR has been marked as stale because it has had no activity for 7 days.
+            Remove the stale label or comment to keep it open. It will be closed
+            automatically in 7 more days if no activity occurs.
+          close-pr-message: >
+            This PR was closed automatically because it has been stale for 14 days with
+            no activity.
+          exempt-draft-pr: true
+          operations-per-run: 30