{"message":"🌐 MLM Generation Plan API","version":"1.0.0","endpoints":{"auth":{"POST /api/auth/register":"Register new member (with optional referral_code)","POST /api/auth/login":"Login and get JWT token"},"users":{"GET /api/users/profile":"My profile, rank, earnings","GET /api/users/tree":"My full downline tree","GET /api/users/downline":"My direct recruits list","GET /api/users/transactions":"My commission history","GET /api/users/ranks":"All rank definitions"},"sales":{"POST /api/sales":"Record a sale (auto-distributes commissions)","GET  /api/sales":"My sales history"}},"note":"For protected routes, send: Authorization: Bearer <token>"}