feat: initialize sidebar navigation configuration and data structure

config/sidebar.ts

@@ -8,9 +8,6 @@ import {
   MessageCircleHeart,
   Sparkles,
   Wallet,
-  FileText,
-  Receipt,
-  CreditCard,
 } from "lucide-react";
 
 export type SidebarNavItem = {
@@ -43,14 +40,6 @@ export const sidebarData: SidebarNavGroup[] = [
       { title: "Finans", href: "/finance", icon: Wallet },
     ],
   },
-  {
-    title: "BUSINESS OS",
-    items: [
-      { title: "Teklifler", href: "/business/proposals", icon: FileText },
-      { title: "Faturalar", href: "/business/invoices", icon: Receipt },
-      { title: "Abonelikler", href: "/business/subscriptions", icon: CreditCard },
-    ],
-  },
   {
     title: "KİŞİSEL",
     items: [{ title: "Günlük", href: "/journal", icon: BookOpenText }],