This is the Laravel Nova Tool for managing translations. It's still work in progress.
You can view all the translations. Clicking on string you can edit it and save. The mutlilevel arrays in lang files are currently not working. So if you have idea on how to solve it. Please make a pull request.
It depends on spatie/laravel-translation-loader
So first you need to install it and set it up. Then add this Tool.
composer require eboye/laravel-nova-translation-editor
Publish config file and add any of the files you have in resource/lang/ folder
php artisan vendor:publish --provider="Eboye\LaravelNovaTranslationEditor\ToolServiceProvider"
config/trans_editor.php looks like this:
<?php
return [
'auth'
];
Just add any of the lang files you need.