Step 01 — Published Language

- Extraction des DTOs publics dans contracts/sales/v1/ :
  OrderPlaced, OrderConfirmed, OrderCancelled, OrderView
- NaiveSalesEventPublisher traduit les événements domaine en contrats v1
- Tests de contrat (schéma, sérialisation JSON) pour stabilité du langage publié

composer.json

@@ -19,7 +19,7 @@
             "MiniShop\\Invoicing\\": "src/Invoicing/",
             "MiniShop\\LegacyFulfillment\\": "src/LegacyFulfillment/",
             "MiniShop\\Shared\\": "src/Shared/",
-            "MiniShop\\Contracts\\": "contracts/",
+            "MiniShop\\Contracts\\Sales\\V1\\": "contracts/sales/v1/",
             "App\\": "apps/symfony/src/"
         }
     },