Add dashboard upgrade banner for free POS plans.

Highlight Pro and Business plans on the register overview for merchants on the free tier.

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

resources/views/partials/upgrade-banner.blade.php

@@ -0,0 +1,10 @@
+@php $banner = config('pos.upgrade_banner'); @endphp
+@if (empty($hasPaidPlan) && ! empty($banner))
+    <div class="flex flex-col gap-3 rounded-2xl border border-indigo-200 bg-gradient-to-r from-indigo-50 to-emerald-50 px-5 py-4 sm:flex-row sm:items-center sm:justify-between">
+        <div>
+            <p class="font-semibold text-slate-900">{{ $banner['title'] }}</p>
+            <p class="mt-0.5 text-sm text-slate-600">{{ $banner['description'] }}</p>
+        </div>
+        <a href="{{ route($banner['route']) }}" class="btn-primary shrink-0">View plans</a>
+    </div>
+@endif

resources/views/pos/dashboard.blade.php

@@ -12,6 +12,8 @@
             ])
         </div>
 
+        @include('partials.upgrade-banner')
+
         <div class="grid gap-4 sm:grid-cols-2 lg:grid-cols-4">
             <div class="rounded-2xl border border-slate-200 bg-white p-5">
                 <p class="text-xs font-medium uppercase tracking-wide text-slate-400">Today's sales</p>