{"service":"Google Ads ETL","version":"1.0.0","status":"ok","endpoints":{"health":"/health","sync":"GET|POST /sync?days=7&token=TOKEN","config_only":"GET|POST /sync?sync_type=config&token=TOKEN","backfill":"GET|POST /sync?days=730&sync_type=backfill&token=TOKEN","cancel":"POST /cancel","status":"/status"}}