Expand Link app with analytics, settings, and custom domains.

Add Bitly-style branded domain support via Ladill Domains SSL API,
account analytics dashboard, settings page with default domain picker,
and fix SSO/dashboard issues from QR Plus template leftovers.

Co-authored-by: Cursor <cursoragent@cursor.com>

resources/views/links/dashboard.blade.php

@@ -1,4 +1,5 @@
-<x-layouts.user :title="'Dashboard'">
+<x-user-layout>
+    <x-slot name="title">Dashboard</x-slot>
     <div class="mx-auto max-w-5xl space-y-6">
         <div class="flex flex-col gap-4 sm:flex-row sm:items-center sm:justify-between">
             <div>
@@ -47,4 +48,4 @@
             </div>
         @endif
     </div>
-</x-layouts.user>
+</x-user-layout>