fix(ci): keep autopilot auto-merge inert without label

Co-authored-by: cynarAI <cynarAI@users.noreply.github.com>

.github/MERGE_GATES.md

@@ -34,7 +34,7 @@ These workflows may fail without blocking product delivery. Do **not** add them
 
 ## Autopilot auto-merge
 
-Workflow: `.github/workflows/autopilot-auto-merge.yml`
+Workflow: `.github/workflows/autopilot-auto-merge.yml` (informational — **not** a required check)
 
 1. Open a pull request from an Autopilot/cloud agent.
 2. Add label **`autopilot`** or **`automerge`**.

.github/workflows/autopilot-auto-merge.yml

@@ -1,5 +1,6 @@
 # Enables GitHub auto-merge for Autopilot PRs once the Product CI gate is green.
 # Label a pull request with `autopilot` or `automerge` to opt in.
+# This workflow is informational only — never add it to required status checks.
 name: autopilot auto-merge
 
 on:
@@ -14,33 +15,30 @@ permissions:
   checks: read
 
 concurrency:
-  group: autopilot-auto-merge-${{ github.event.pull_request.number || github.event.check_suite.pull_requests[0].number || github.run_id }}
+  group: autopilot-auto-merge-${{ github.event.pull_request.number || github.run_id }}
   cancel-in-progress: false
 
 jobs:
   auto-merge:
     name: Autopilot auto-merge
     runs-on: ubuntu-latest
-    if: >-
-      github.event_name == 'pull_request' ||
-      (github.event_name == 'check_suite' &&
-       github.event.check_suite.pull_requests[0] != null)
     steps:
       - name: Resolve pull request
         id: pr
         env:
           GH_TOKEN: ${{ github.token }}
-          EVENT_NAME: ${{ github.event_name }}
-          PR_NUMBER: ${{ github.event.pull_request.number }}
-          CHECK_SUITE_PR: ${{ github.event.check_suite.pull_requests[0].number }}
         run: |
           set -euo pipefail
-          number="$PR_NUMBER"
-          if [[ "$EVENT_NAME" == "check_suite" ]]; then
-            number="$CHECK_SUITE_PR"
+          event_name="${{ github.event_name }}"
+          number=""
+          if [[ "$event_name" == "pull_request" ]]; then
+            number="${{ github.event.pull_request.number }}"
+          elif [[ "$event_name" == "check_suite" ]]; then
+            number="$(jq -r '.check_suite.pull_requests[0].number // empty' "$GITHUB_EVENT_PATH")"
           fi
           if [[ -z "$number" ]]; then
-            echo "No pull request in event; skipping." >&2
+            echo "No pull request in event; skipping."
+            echo "enabled=false" >> "$GITHUB_OUTPUT"
             exit 0
           fi
           pr_json="$(gh api "repos/${GITHUB_REPOSITORY}/pulls/${number}")"
@@ -63,8 +61,7 @@ jobs:
 
       - name: Skip draft pull requests
         if: steps.pr.outputs.enabled == 'true' && steps.pr.outputs.draft == 'true'
-        run: |
-          echo "Draft pull request; auto-merge waits for ready_for_review."
+        run: echo "Draft pull request; auto-merge waits for ready_for_review."
 
       - name: Verify Product CI on head commit
         id: gate
@@ -91,7 +88,7 @@ jobs:
                 exit 0
                 ;;
               failure|cancelled|timed_out|action_required)
-                echo "Product CI failed ($conclusion); not enabling auto-merge." >&2
+                echo "Product CI failed ($conclusion); not enabling auto-merge."
                 exit 1
                 ;;
             esac