{"message":"API VTC optimisée pour haute performance","version":"2.0.0","environment":"production","capabilities":{"maxUsers":500,"maxCourses":5000,"features":["websocket","real-time","groups","payments"]},"endpoints":{"auth":"/api/auth","courses":"/api/courses","payments":"/api/payments","groups":"/api/groups","drivers":"/api/drivers","admin":"/api/admin","orderReceipts":"/api/order-receipts","billing":"/api/billing","health":"/health","metrics":"/metrics"}}