fix: duplikaty zamowien + status COD (is_cod flag)

- summaryView(): guard — redirect do istniejacego zamowienia gdy ORDER_SUBMIT_LAST_ORDER_ID w sesji
- basketSave(): try-catch wokol createFromBasket(), wyjatki logowane, koszyk zachowany
- OrderRepository: usunieto hardkodowane payment_id == 3, uzywana flaga is_cod
- PaymentMethodRepository: nowe pole is_cod w normalizacji, save() i forTransport() SQL
- ShopPaymentMethodController: switch "Platnosc przy odbiorze" w formularzu edycji
- migrations/0.338.sql: ALTER TABLE pp_shop_payment_methods ADD COLUMN is_cod

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

autoload/Domain/Order/OrderRepository.php

@@ -814,7 +814,7 @@ class OrderRepository
         \Shared\Helpers\Helpers::send_email($settings['contact_email'], 'Nowe zamówienie / ' . $settings['firm_name'] . ' / ' . $order['number'] . ' - ' . $order['client_surname'] . ' ' . $order['client_name'], $mail_order);
 
         // zmiana statusu w realizacji jeżeli płatność przy odbiorze
-        if ($payment_id == 3) {
+        if (!empty($payment_method['is_cod'])) {
             $this->updateOrderStatus($order_id, 4);
             $this->insertStatusHistory($order_id, 4, 1);
         }

autoload/Domain/PaymentMethod/PaymentMethodRepository.php

@@ -122,6 +122,7 @@ class PaymentMethodRepository
             'apilo_payment_type_id' => $this->normalizeApiloPaymentTypeId($data['apilo_payment_type_id'] ?? null),
             'min_order_amount' => $this->normalizeDecimalOrNull($data['min_order_amount'] ?? null),
             'max_order_amount' => $this->normalizeDecimalOrNull($data['max_order_amount'] ?? null),
+            'is_cod' => (int)(!empty($data['is_cod']) ? 1 : 0),
         ];
 
         $this->db->update('pp_shop_payment_methods', $row, ['id' => $paymentMethodId]);
@@ -240,7 +241,8 @@ class PaymentMethodRepository
                 spm.status,
                 spm.apilo_payment_type_id,
                 spm.min_order_amount,
-                spm.max_order_amount
+                spm.max_order_amount,
+                spm.is_cod
             FROM pp_shop_payment_methods AS spm
             INNER JOIN pp_shop_transport_payment_methods AS stpm
                 ON stpm.id_payment_method = spm.id
@@ -335,6 +337,7 @@ class PaymentMethodRepository
         $row['apilo_payment_type_id'] = $this->normalizeApiloPaymentTypeId($row['apilo_payment_type_id'] ?? null);
         $row['min_order_amount'] = $this->normalizeDecimalOrNull($row['min_order_amount'] ?? null);
         $row['max_order_amount'] = $this->normalizeDecimalOrNull($row['max_order_amount'] ?? null);
+        $row['is_cod'] = (int)($row['is_cod'] ?? 0);
 
         return $row;
     }

autoload/admin/Controllers/ShopPaymentMethodController.php

@@ -184,6 +184,7 @@ class ShopPaymentMethodController
             'apilo_payment_type_id' => $paymentMethod['apilo_payment_type_id'] ?? '',
             'min_order_amount' => $paymentMethod['min_order_amount'] ?? '',
             'max_order_amount' => $paymentMethod['max_order_amount'] ?? '',
+            'is_cod' => (int)($paymentMethod['is_cod'] ?? 0),
         ];
 
         $fields = [
@@ -220,6 +221,10 @@ class ShopPaymentMethodController
                 'tab' => 'settings',
                 'options' => $apiloOptions,
             ]),
+            FormField::switch('is_cod', [
+                'label' => 'Platnosc przy odbiorze',
+                'tab' => 'settings',
+            ]),
             FormField::switch('status', [
                 'label' => 'Aktywny',
                 'tab' => 'settings',

autoload/front/Controllers/ShopBasketController.php

@@ -276,6 +276,19 @@ class ShopBasketController
       exit;
     }
 
+    $existingOrderId = isset( $_SESSION[ self::ORDER_SUBMIT_LAST_ORDER_ID_SESSION_KEY ] )
+      ? (int)$_SESSION[ self::ORDER_SUBMIT_LAST_ORDER_ID_SESSION_KEY ]
+      : 0;
+    if ( $existingOrderId > 0 )
+    {
+      $existingOrderHash = $this->orderRepository->findHashById( $existingOrderId );
+      if ( $existingOrderHash )
+      {
+        header( 'Location: /zamowienie/' . $existingOrderHash );
+        exit;
+      }
+    }
+
     $client = \Shared\Helpers\Helpers::get_session( 'client' );
     $orderSubmitToken = $this->createOrderSubmitToken();
 
@@ -325,7 +338,10 @@ class ShopBasketController
       exit;
     }
 
-    if ( $order_id = $this->orderRepository->createFromBasket(
+    $order_id = null;
+    try
+    {
+      $order_id = $this->orderRepository->createFromBasket(
         $client[ 'id' ],
         \Shared\Helpers\Helpers::get_session( 'basket' ),
         \Shared\Helpers\Helpers::get_session( 'basket-transport-method-id' ),
@@ -347,7 +363,17 @@ class ShopBasketController
         \Shared\Helpers\Helpers::get_session( 'basket_orlen_point_info' ),
         \Shared\Helpers\Helpers::get_session( 'coupon' ),
         \Shared\Helpers\Helpers::get_session( 'basket_message' )
-      ) )
+      );
+    }
+    catch ( \Exception $e )
+    {
+      error_log( '[basketSave] createFromBasket exception: ' . $e->getMessage() );
+      \Shared\Helpers\Helpers::error( \Shared\Helpers\Helpers::lang( 'zamowienie-zostalo-zlozone-komunikat-blad' ) );
+      header( 'Location: /koszyk' );
+      exit;
+    }
+
+    if ( $order_id )
     {
       \Shared\Helpers\Helpers::set_session( self::ORDER_SUBMIT_LAST_ORDER_ID_SESSION_KEY, (int)$order_id );
       \Shared\Helpers\Helpers::alert( \Shared\Helpers\Helpers::lang( 'zamowienie-zostalo-zlozone-komunikat' ) );