refactor: 調整倉庫自動建立機制，統一使用門市倉類型 (retail)

app/Enums/WarehouseType.php

@@ -10,7 +10,6 @@ enum WarehouseType: string
     case VENDING = 'vending';       // 販賣機倉/IoT
     case TRANSIT = 'transit';       // 在途倉/移動倉
     case QUARANTINE = 'quarantine'; // 瑕疵倉/報廢倉
-    case SYSTEM_SALES = 'system_sales'; // 系統自動建立的銷售倉
 
     public function label(): string
     {
@@ -21,7 +20,6 @@ enum WarehouseType: string
             self::VENDING => '販賣機 (IoT設備)',
             self::TRANSIT => '在途倉 (物流車)',
             self::QUARANTINE => '瑕疵倉 (報廢/檢驗)',
-            self::SYSTEM_SALES => '系統銷售倉',
         };
     }
 }

app/Modules/Inventory/Services/InventoryService.php

@@ -599,11 +599,21 @@ class InventoryService implements InventoryServiceInterface
      */
     public function findOrCreateWarehouseByName(string $warehouseName)
     {
+        // 1. 優先查找名稱完全匹配且啟用的倉庫（不限類型）
+        $warehouse = Warehouse::where('name', $warehouseName)
+            ->where('is_active', true)
+            ->first();
+
+        if ($warehouse) {
+            return $warehouse;
+        }
+
+        // 2. 若找不到對應倉庫，則統一進入「整合銷售倉」(類型：retail)
         return Warehouse::firstOrCreate(
-            ['name' => $warehouseName],
+            ['name' => '整合銷售倉'],
             [
-                'code' => 'SALES-' . strtoupper(bin2hex(random_bytes(4))),
-                'type' => 'system_sales',
+                'code' => 'INT-RETAIL-001',
+                'type' => 'retail',
                 'is_active' => true,
             ]
         );