Bookings/payments/linktree: fix payment method display, event filter, logo, search

- Bookings: align payment method labels with payments page (bank_transfer, tpago, etc), add sibling fallback
- Payments: add event filter (single/multi), add search by name/email/event
- Linktree: use Spanglish logo instead of icon
- API: payments getAll supports eventId/eventIds

Made-with: Cursor

frontend/src/app/admin/bookings/page.tsx

@@ -154,12 +154,23 @@ export default function AdminBookingsPage() {
   };
 
   const getPaymentMethodLabel = (provider: string) => {
-    switch (provider) {
-      case 'bancard': return 'TPago / Card';
-      case 'lightning': return 'Bitcoin Lightning';
-      case 'cash': return 'Cash at Event';
-      default: return provider;
+    const labels: Record<string, string> = {
+      cash: locale === 'es' ? 'Efectivo en el Evento' : 'Cash at Event',
+      bank_transfer: locale === 'es' ? 'Transferencia Bancaria' : 'Bank Transfer',
+      lightning: 'Lightning',
+      tpago: 'TPago',
+      bancard: 'Bancard',
+    };
+    return labels[provider] || provider;
+  };
+
+  const getDisplayProvider = (ticket: TicketWithDetails) => {
+    if (ticket.payment?.provider) return ticket.payment.provider;
+    if (ticket.bookingId) {
+      const sibling = tickets.find(t => t.bookingId === ticket.bookingId && t.payment?.provider);
+      return sibling?.payment?.provider ?? 'cash';
     }
+    return 'cash';
   };
 
   const filteredTickets = tickets.filter((ticket) => {
@@ -394,7 +405,7 @@ export default function AdminBookingsPage() {
                         <span className={`inline-block px-2 py-0.5 rounded-full text-xs font-medium ${getPaymentStatusColor(ticket.payment?.status || 'pending')}`}>
                           {ticket.payment?.status || 'pending'}
                         </span>
-                        <p className="text-xs text-gray-500 mt-0.5">{getPaymentMethodLabel(ticket.payment?.provider || 'cash')}</p>
+                        <p className="text-xs text-gray-500 mt-0.5">{getPaymentMethodLabel(getDisplayProvider(ticket))}</p>
                         {ticket.payment && (
                           <p className="text-xs font-medium mt-0.5">{bookingInfo.bookingTotal.toLocaleString()} {ticket.payment.currency}</p>
                         )}