Various fixes for DB seeding

database/migrations/2025_11_21_081606_create_notes_table.php

@@ -15,8 +15,6 @@ public function up(): void
             $table->id();
             $table->foreignId('user_id')->constrained()->nullOnDelete();
             $table->text('text');
-            
-            // Polymorphische Beziehung
             $table->unsignedBigInteger('notable_id');
             $table->string('notable_type');