{"message":"Healthcare AI Copilot Backend API","version":"1.0.0","endpoints":{"health":"/health","auth":{"checkSuperAdmin":"/api/auth/check-super-admin","register":"/api/auth/register","signin":"/api/auth/signin","refresh":"/api/auth/refresh","logout":"/api/auth/logout","me":"/api/auth/me (protected)"},"search":"/api/search","vectors":"/api/vectors","feedback":"/api/feedback","admin":{"documents":"/api/admin/documents (protected)","books":"/api/admin/books (protected)","categories":"/api/admin/categories (protected)","tags":"/api/admin/tags (protected)","users":"/api/admin/users (super-admin only)","userStats":"/api/admin/users/stats (super-admin only)","guests":"/api/admin/guests (super-admin only)","guestExams":"/api/admin/guests/exams (super-admin only)"}}}