Reference for `renovate.json` - Mend Renovate dependency-update orchestrator (multi-platform: GitHub / GitLab / Bitbucket / Azure DevOps / Gitea); top-level keys (`extends` for preset references, `schedule`, `prConcurrentLimit`, `vulnerabilityAlerts`); `packageRules[]` array with `matchPackageNames` / `matchUpdateTypes` / `automerge` matching; `ignoreDeps`, `addLabels`, `automergeSchedule`. Use when authoring or reviewing Renovate configs in any repo platform Renovate supports.