feat(setting): étendre ContentSource avec champs de test et domain model

- Ajouter testSlug, testChapterNumber, baseUrl sur ContentSource (entité, domain model, migration)
- Exposer ces champs dans les Resources, Processors, Providers et Mapper
- Mettre à jour store Pinia, repository API et composants Vue (form, card, liste)

src/Domain/Setting/Infrastructure/ApiPlatform/Resource/GetContentSourceResource.php

@@ -30,6 +30,11 @@ class GetContentSourceResource
         public readonly ?string $nextPageSelector,
         public readonly ?string $chapterSelector,
         public readonly string $cleanBaseUrl,
+        public readonly ?string $testSlug = null,
+        public readonly ?float $testChapterNumber = null,
+        public readonly string $healthStatus = 'unknown',
+        public readonly ?\DateTimeImmutable $healthLastTestedAt = null,
+        public readonly ?string $healthLastError = null,
     ) {
     }
 }