fix(BR-132): both groups digits-only in PROMO-XXXX-XXXX format

Format is now PROMO-0123-4567 (two 4-digit groups).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

diff --git a/erp24/services/PromocodeService.php b/erp24/services/PromocodeService.php
index 613d6468c9eff548f8f28ffdd765ec9921bf6278..9ce51428a37af6b5b1f7d0b08a6da768b6652741 100644 (file)
--- a/erp24/services/PromocodeService.php
+++ b/erp24/services/PromocodeService.php
@@ -28,7 +28,7 @@ class PromocodeService
     private static function generateSuffix(string $format): string
     {
         if ($format === Promocode::FORMAT_ALPHANUMERIC) {
-            return '-' . self::generateAlphanumericGroup(4) . '-' . sprintf('%04d', random_int(0, 9999));
+            return '-' . sprintf('%04d', random_int(0, 9999)) . '-' . sprintf('%04d', random_int(0, 9999));
         }
         return self::generateThreeNums();
     }