Updated checkout to wait for backend confirmation before advancing, added a “Processing payment…” state with retry/ refresh fallback, and now use Paddle totals/currency for purchase records + confirmation emails (with new email translations).

tests/Unit/GiftVoucherCheckoutServiceTest.php

@@ -40,7 +40,7 @@ class GiftVoucherCheckoutServiceTest extends TestCase
             ->with('/checkout/links', Mockery::on(function ($payload) {
                 return $payload['items'][0]['price_id'] === 'pri_a'
                     && $payload['customer_email'] === 'buyer@example.com'
-                    && $payload['metadata']['type'] === 'gift_voucher';
+                    && $payload['custom_data']['type'] === 'gift_voucher';
             }))
             ->andReturn(['data' => ['url' => 'https://paddle.test/checkout/123', 'expires_at' => '2025-12-31T00:00:00Z', 'id' => 'chk_123']]);