{"message":"Welcome to Rental Gateway API","version":"2.0.0","environment":"development","docs_url":"/api/docs","health_check":"/health","api_info":"/api/v1","supported_systems":["RIMS","REBORN","AMANO","ORCAR","INS","GRIM"],"features":["7 ERP Systems Integration","Parallel Vehicle Search","Unified Reservation Management","Redis Caching","Real-time Health Monitoring","Structured Logging"]}