{"service":"SmartRanking Calendar API","version":"1.0.0","endpoints":{"GET /ics":"Generate and download .ics file (Apple/Yandex)","GET /google":"302 redirect to Google Calendar create event page","GET /outlook":"302 redirect to Outlook deeplink","GET /links":"JSON with all calendar URLs","GET /health":"Health check","GET /admin":"Admin UI for creating short links","GET /c/{slug}":"Landing page with 4 calendar buttons","GET /docs/integration":"Integration guide for GetCourse engineers"},"docs":"https://calendar.smartranking.ru/docs/integration"}