refactor: update user roles, clean up admin settings UI, and adjust dashboard navigation logic

src/app/page.tsx

@@ -20,8 +20,8 @@ export default function LandingPage() {
       sessionStorage.setItem('userName', user.name);
       
       switch (user.role) {
-        case 'admin':
-        case 'manager':
+        case 'super_admin':
+        case 'admin_manager':
         case 'staff':
           router.push('/admin');
           break;

src/data/mockData.ts

@@ -161,7 +161,7 @@ export const users: User[] = [
   { id: 'u1', name: 'Rahim Ahmed', email: 'rahim@email.com', phone: '01712345678', role: 'biker', status: 'active', createdAt: '2024-01-15' },
   { id: 'u2', name: 'Karim Hasan', email: 'karim@email.com', phone: '01712345679', role: 'biker', status: 'active', createdAt: '2024-02-20' },
   { id: 'u3', name: 'Admin Manager', email: 'adminmanager@jaiben.com', phone: '01710000001', role: 'admin_manager', status: 'active', createdAt: '2023-06-01' },
-  { id: 'u4', name: 'Manager User', email: 'manager@jaiben.com', phone: '01710000002', role: 'manager', status: 'active', createdAt: '2023-06-01' },
+  { id: 'u4', name: 'Manager User', email: 'manager@jaiben.com', phone: '01710000002', role: 'admin_manager', status: 'active', createdAt: '2023-06-01' },
   { id: 'u5', name: 'Staff User', email: 'staff@jaiben.com', phone: '01710000003', role: 'staff', status: 'active', createdAt: '2023-07-01' },
   { id: 'u6', name: 'Accountant User', email: 'accountant@jaiben.com', phone: '01710000004', role: 'accountant', status: 'active', createdAt: '2023-07-01' },
   { id: 'u7', name: 'Investor User', email: 'investor@email.com', phone: '01720000001', role: 'investor', status: 'active', createdAt: '2023-08-01' },