{"success":true,"message":"Ini adalah server API Inventory. Aplikasi frontend berjalan di port lain.","frontend":"serp.aproject.site","gunakan":["GET  serp.aproject.site            -> Buka aplikasi (React)","GET  /api/health               -> Health check","GET  /api/dashboard/summary    -> Ringkasan dashboard","GET  /api/dashboard/chart      -> Grafik mutasi 7 hari","GET  /api/products             -> Daftar produk","GET  /api/racks                -> Daftar rak","GET  /api/transactions?type=MASUK -> Riwayat transaksi","GET  /api/stock-card/:kode     -> Kartu stok"]}