Add a .github/workflows/sync-upstream.yml workflow to each fork repo. The workflow runs on a cron schedule (e.g., daily) and supports workflow_dispatch for manual triggers. It syncs the main branch from the upstream shipwright-io repos into the Red Hat fork via git merge. On merge conflict, the Action fails and the team is notified via GitHub notification for manual resolution. The workflow should be extensible to sync upstream release-v* branches as needed.