improve last code

database/migrations/2025_11_15_090251_add_column_to_missions_table.php

@@ -13,7 +13,7 @@ return new class extends Migration
     {
         Schema::table('missions', function (Blueprint $table) {
             $table->foreignId('machine_id')->nullable()->constrained('cmms_machines');
-            $table->string('machine_name')->nullable();
+            $table->string('machine_code')->nullable();
         });
     }
 
@@ -24,7 +24,7 @@ return new class extends Migration
     {
         Schema::table('missions', function (Blueprint $table) {
             $table->dropForeign('missions_machine_id_foreign');
-            $table->dropColumn(['machine_id', 'machine_name']);
+            $table->dropColumn(['machine_id', 'machine_code']);
         });
     }
 };