{"message":"Welcome to Metro Backend API (MySQL + Sequelize)","endpoints":{"cities":"/api/cities","stations":"/api/stations?city=HYDERABAD","lines":"/api/lines?city=HYDERABAD","route":"/api/route/:from/:to","fareCalculator":"/api/fares/calculate?city=DELHI&from=Anand%20Vihar&to=Chandni%20Chowk","cityTimetable":"/api/timetables?city=DELHI","crowdLevels":"/api/crowd-levels?city=DELHI&station=Rajiv%20Chowk","auth":"/api/auth"}}