Problem

The daily Update Contributors & Star History workflow's Auto-merge PR step fails every run (e.g. run 28233594935):

GraphQL: Repository rule violations found
Required status check "CI Gate" is expected.
 (mergePullRequest)

Two independent root causes, both confirmed against the live repo config:

1. --admin cannot bypass the main ruleset. The ruleset requires the CI Gate status check and its bypass_actors list is empty, so no actor — not even an admin token — can force the merge while CI Gate is still in the expected (unreported) state.

2. CI Gate never runs on the PR on its own. The PR was created with the default GITHUB_TOKEN, and branch pushes made by GITHUB_TOKEN do not trigger on: pull_request workflows (GitHub's recursion guard). So CI Gate stays expected forever, and a maintainer had to manually re-trigger CI and merge by hand each day (PR docs: update contributors and star history #6337 was merged manually by a human at 11:43, ~48 min after the bot's failed attempt).

Fix

• Create the PR with the WEBSITE_REPO_TOKEN PAT instead of the default GITHUB_TOKEN, so the push triggers on: pull_request CI and CI Gate actually runs.
• Replace gh pr merge --admin with gh pr merge --auto. GitHub squash-merges the PR automatically once CI Gate passes (the ruleset requires 0 approvals and allows the squash method), respecting the ruleset instead of fighting it.

Net effect: the daily contributors/star-history update merges itself with no manual intervention.

Verification

• python3 -c "import yaml; yaml.safe_load(...)" — workflow YAML parses.
• Ruleset confirmed via gh api repos/librefang/librefang/rulesets/13809063: single required check CI Gate, bypass_actors: [], required_approving_review_count: 0, allowed_merge_methods includes squash.
• Repo settings confirmed: allow_auto_merge: true, allow_squash_merge: true, delete_branch_on_merge: true.
• WEBSITE_REPO_TOKEN confirmed present in repo secrets.
• This is a workflow-only change; full validation is the next scheduled (or workflow_dispatch) run of the job.