Unify primary buttons with gradient pill design across the app.

Add shared btn-primary components and plus icons on create/new actions for a consistent Ladill UI.

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

resources/views/email/mailboxes/index.blade.php

@@ -4,7 +4,7 @@
 <div class="mx-auto max-w-4xl">
     <div class="flex items-center justify-between">
         <h1 class="text-xl font-semibold tracking-tight text-slate-900">Mailboxes</h1>
-        <a href="{{ route('email.mailboxes.create') }}" class="rounded-lg bg-indigo-600 px-4 py-2 text-sm font-semibold text-white hover:bg-indigo-700">New mailbox</a>
+        <x-btn.create :href="route('email.mailboxes.create')">New mailbox</x-btn.create>
     </div>
     @if($error)<div class="mt-4 rounded-xl border border-amber-200 bg-amber-50 px-4 py-3 text-sm text-amber-800">{{ $error }}</div>@endif
 
@@ -12,7 +12,7 @@
         <div class="mt-6 rounded-2xl border border-dashed border-slate-300 bg-white p-12 text-center">
             <p class="text-sm font-semibold text-slate-700">No mailboxes yet</p>
             <p class="mx-auto mt-1 max-w-sm text-xs text-slate-400">Verify a domain, then create a mailbox like you@yourdomain.com.</p>
-            <a href="{{ route('email.mailboxes.create') }}" class="mt-4 inline-block rounded-lg bg-indigo-600 px-4 py-2 text-sm font-semibold text-white hover:bg-indigo-700">Create mailbox</a>
+            <x-btn.create :href="route('email.mailboxes.create')" class="mt-4">Create mailbox</x-btn.create>
         </div>
     @else
         <div class="mt-6 divide-y divide-slate-100 overflow-hidden rounded-2xl border border-slate-200 bg-white">