{"message":"Price Comparison API (Unified Database)","version":"2.1.0","mode":"unified_master_database","stores":["worten","pcdiga","amazon_es"],"endpoints":["/search","/health","/sync","/stats","/stores","/categories","/brands"],"features":["cross_store_price_comparison","amazon_es_integration","enhanced_product_matching","prime_detection","real_time_sync"]}