feat(thank-you-page): convert to client component with confetti and UI enhancements

- Changed from server to client component to enable interactive features like confetti animation
- Removed server-side translations and hardcoded Portuguese text for simplicity
- Added confetti effect on page load and improved success icon with animations
- Updated buttons and share functionality for better user experience
- This enhances the donation thank you page with celebratory elements and client-side interactivity

lib/payment-cache.ts

@@ -0,0 +1,47 @@
+// Cache simples em memória (Map) para armazenar status de pagamentos
+// Em produção, trocar por Redis ou banco de dados
+
+interface PaymentStatus {
+  paid: boolean;
+  paidAt?: string;
+  amount: number;
+  anonymous: boolean;
+  customer?: any;
+}
+
+const paymentCache = new Map<string, PaymentStatus>();
+
+export function markAsPaid(
+  pixId: string,
+  data: {
+    paidAt: string;
+    amount: number;
+    anonymous: boolean;
+    customer?: any;
+  }
+) {
+  paymentCache.set(pixId, {
+    paid: true,
+    paidAt: data.paidAt,
+    amount: data.amount,
+    anonymous: data.anonymous,
+    customer: data.customer,
+  });
+
+  console.log(`✅ Pagamento marcado como pago no cache: ${pixId}`);
+
+  // Limpar após 1 hora
+  setTimeout(() => {
+    paymentCache.delete(pixId);
+    console.log(`🗑️ Cache expirado para: ${pixId}`);
+  }, 3600000);
+}
+
+export function getPaymentStatus(pixId: string): PaymentStatus | undefined {
+  return paymentCache.get(pixId);
+}
+
+// Limpar cache expirado periodicamente (a cada 5 minutos)
+setInterval(() => {
+  console.log(`📊 Cache atual: ${paymentCache.size} pagamentos armazenados`);
+}, 300000);