move element seeding into its own seeder file

backend/database/seeders/DatabaseSeeder.php

@@ -11,6 +11,7 @@ class DatabaseSeeder extends Seeder
         $this->call([
             UserSeeder::class,
             SetSeeder::class,
+            ElementSeeder::class,
         ]);
     }
 }

backend/database/seeders/ElementSeeder.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace Database\Seeders;
+
+use App\Element\CreateElementDto;
+use App\Element\ElementRepository;
+use App\Set\SetRepository;
+use Illuminate\Database\Seeder;
+
+class ElementSeeder extends Seeder
+{
+    public function run(): void
+    {
+        $setRepository = app(SetRepository::class);
+        $elementRepository = app(ElementRepository::class);
+        $baderechSet = $setRepository->find(1);
+        $elementRepository->create(new CreateElementDto(
+            set: $baderechSet,
+            title: $baderechSet->getName(),
+            parentElement: null,
+        ));
+    }
+}

backend/database/seeders/SetSeeder.php

@@ -2,8 +2,6 @@
 
 namespace Database\Seeders;
 
-use App\Element\CreateElementDto;
-use App\Element\ElementRepository;
 use App\Set\CreateSetDto;
 use App\Set\SetRepository;
 use Illuminate\Database\Seeder;
@@ -13,16 +11,10 @@ class SetSeeder extends Seeder
     public function run(): void
     {
         $setRepository = app(SetRepository::class);
-        $elementRepository = app(ElementRepository::class);
         $title = 'Baderech HaAvodah';
 
         $set = $setRepository->create(new CreateSetDto(
             name: $title,
         ));
-        $elementRepository->create(new CreateElementDto(
-            set: $set,
-            title: $title,
-            parentElement: null,
-        ));
     }
 }