test(config): align current odds and settlement contracts

tests/Feature/AdminAgentLineApiTest.php

@@ -1,6 +1,7 @@
 <?php
 
 use App\Models\AdminUser;
+use App\Lottery\ErrorCode;
 use Illuminate\Support\Facades\DB;
 use Illuminate\Support\Facades\Hash;
 use Illuminate\Foundation\Testing\RefreshDatabase;
@@ -112,7 +113,8 @@ test('agent line provision rejects site that already has root', function (): voi
             'password' => 'secret-strong',
         ])
         ->assertStatus(422)
-        ->assertJsonPath('data.errors.site_code.0', 'site_root_exists');
+        ->assertJsonPath('code', ErrorCode::ValidationFailed->value)
+        ->assertJsonStructure(['data' => ['errors' => ['site_code']]]);
 });
 
 test('integration manager with site.manage can create integration site', function (): void {