feat: add Info page link to desktop top navigation

The Info button was only accessible via mobile hamburger menu.
Added it to the desktop header nav bar between Support and Profile.

src/components/layout/AppShell/AppShell.tsx

@@ -121,6 +121,22 @@ const ShieldIcon = ({ className }: { className?: string }) => (
   </svg>
 );
 
+const InfoIcon = ({ className }: { className?: string }) => (
+  <svg
+    className={className}
+    fill="none"
+    viewBox="0 0 24 24"
+    stroke="currentColor"
+    strokeWidth={1.5}
+  >
+    <path
+      strokeLinecap="round"
+      strokeLinejoin="round"
+      d="M11.25 11.25l.041-.02a.75.75 0 011.063.852l-.708 2.836a.75.75 0 001.063.853l.041-.021M21 12a9 9 0 11-18 0 9 9 0 0118 0zm-9-3.75h.008v.008H12V8.25z"
+    />
+  </svg>
+);
+
 const LogoutIcon = ({ className }: { className?: string }) => (
   <svg
     className={className}
@@ -236,6 +252,7 @@ export function AppShell({ children }: AppShellProps) {
     { path: '/', label: t('nav.dashboard'), icon: HomeIcon },
     { path: '/balance', label: t('nav.balance'), icon: CreditCardIcon },
     { path: '/support', label: t('nav.support'), icon: ChatIcon },
+    { path: '/info', label: t('nav.info'), icon: InfoIcon },
     { path: '/profile', label: t('nav.profile'), icon: UserIcon },
   ];