{"message":"🎓 American History User Management API","status":"running","endpoints":["GET /api/health - Health check","POST /api/users/register - Register new user","POST /api/users/login - User login","GET /api/users/{userId} - Get user profile","POST /api/progress - Save quiz progress","GET /api/progress/{userId} - Get user progress","POST /api/sessions - Create game session (legacy)","POST /api/sessions/{id}/join - Join session (legacy)","GET /api/sessions/{id} - Get session info (legacy)"],"database":"DynamoDB","tables":["american-history-users","american-history-progress"],"timestamp":"2026-06-04T09:39:12.255Z"}