feat: implement flexible payment processing with partial cash payments and automatic balance deduction in reports

src/components/Sidebar.tsx

@@ -19,13 +19,15 @@ import {
   X,
   ArrowUpRight,
   Info,
-  BarChart2
+  BarChart2,
+  Wallet
 } from 'lucide-react'
 
 const menuItems = [
   { name: 'Open Order', href: '/', icon: Store, desc: 'Daftar PO live hari ini' },
   { name: 'Jasa Order Saya', href: '/my-orders', icon: ClipboardList, desc: 'Kelola PO buatan Anda' },
   { name: 'Pesanan Saya', href: '/my-purchases', icon: ShoppingBag, desc: 'Riwayat titipan Anda' },
+  { name: 'Buku Saldo', href: '/balances', icon: Wallet, desc: 'Pantau riwayat saldo' },
   { name: 'Laporan', href: '/reports', icon: BarChart2, desc: 'Ringkasan transaksi' },
 ]