ver. 0.320: API słowniki — ensure_producer; ProductRepository — producer_name w odpowiedzi

- DictionariesApiController: nowy endpoint POST ensure_producer (znajdź lub utwórz producenta)
- ProducerRepository: metoda ensureProducerForApi()
- ProductRepository: pole producer_name w odpowiedzi GET product
- ApiRouter: wstrzyknięto ProducerRepository do DictionariesApiController
- Zaktualizowano docs/API.md

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

tests/Unit/api/Controllers/DictionariesApiControllerTest.php

@@ -4,6 +4,7 @@ namespace Tests\Unit\api\Controllers;
 use PHPUnit\Framework\TestCase;
 use api\Controllers\DictionariesApiController;
 use Domain\Attribute\AttributeRepository;
+use Domain\Producer\ProducerRepository;
 use Domain\ShopStatus\ShopStatusRepository;
 use Domain\Transport\TransportRepository;
 use Domain\PaymentMethod\PaymentMethodRepository;
@@ -14,6 +15,7 @@ class DictionariesApiControllerTest extends TestCase
     private $mockTransportRepo;
     private $mockPaymentRepo;
     private $mockAttrRepo;
+    private $mockProducerRepo;
     private $controller;
 
     protected function setUp(): void
@@ -22,12 +24,14 @@ class DictionariesApiControllerTest extends TestCase
         $this->mockTransportRepo = $this->createMock(TransportRepository::class);
         $this->mockPaymentRepo = $this->createMock(PaymentMethodRepository::class);
         $this->mockAttrRepo = $this->createMock(AttributeRepository::class);
+        $this->mockProducerRepo = $this->createMock(ProducerRepository::class);
 
         $this->controller = new DictionariesApiController(
             $this->mockStatusRepo,
             $this->mockTransportRepo,
             $this->mockPaymentRepo,
-            $this->mockAttrRepo
+            $this->mockAttrRepo,
+            $this->mockProducerRepo
         );
 
         $_SERVER['REQUEST_METHOD'] = 'GET';