Make cashier billing invoices actionable for walk-up payment.

Clarify booth Call next vs unpaid invoice list, and expose Pay/View row actions so cashiers can open bills when the booth queue is empty.

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

resources/views/care/partials/queue-ops.blade.php

@@ -3,6 +3,7 @@
   $qi = $queueIntegration ?? null;
   $callNextRoute = $queueCallNextRoute ?? null;
   $callNextParams = $queueCallNextParams ?? [];
+  $callNextDescription = $queueCallNextDescription ?? 'Bring the next waiting patient to your desk';
   $currentAppointmentId = $currentAppointmentId ?? null;
   $variant = $variant ?? 'bar'; // bar | button
 @endphp
@@ -24,7 +25,7 @@
       <button type="submit" class="group flex w-full items-center justify-between gap-3 rounded-xl bg-indigo-600 px-4 py-3 text-left shadow-sm transition hover:bg-indigo-700">
         <span class="min-w-0">
           <span class="block text-sm font-semibold text-white">Call next</span>
-          <span class="mt-0.5 block truncate text-xs text-indigo-100">Bring the next waiting patient to your desk</span>
+          <span class="mt-0.5 block text-xs text-indigo-100">{{ $callNextDescription }}</span>
         </span>
         <span class="flex h-9 w-9 shrink-0 items-center justify-center rounded-lg bg-white/15 text-white transition group-hover:bg-white/25">
           <svg class="h-5 w-5" fill="none" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" aria-hidden="true">