BookStack/resources/lang/pl/activities.php

<?php
/**
 * Activity text strings.
 * Is used for all the text within activity logs & notifications.
 */
return [

    // Pages
    'page_create'                 => 'utworzono stronę',
    'page_create_notification'    => 'Page successfully created',
    'page_update'                 => 'zaktualizowano stronę',
    'page_update_notification'    => 'Page successfully updated',
    'page_delete'                 => 'usunięto stronę',
    'page_delete_notification'    => 'Page successfully deleted',
    'page_restore'                => 'przywrócono stronę',
    'page_restore_notification'   => 'Page successfully restored',
    'page_move'                   => 'przeniesiono stronę',

    // Chapters
    'chapter_create'              => 'utworzono rozdział',
    'chapter_create_notification' => 'Chapter successfully created',
    'chapter_update'              => 'zaktualizowano rozdział',
    'chapter_update_notification' => 'Chapter successfully updated',
    'chapter_delete'              => 'usunięto rozdział',
    'chapter_delete_notification' => 'Chapter successfully deleted',
    'chapter_move'                => 'przeniesiono rozdział',

    // Books
    'book_create'                 => 'utworzono książkę',
    'book_create_notification'    => 'Book successfully created',
    'book_update'                 => 'zaktualizowano książkę',
    'book_update_notification'    => 'Book successfully updated',
    'book_delete'                 => 'usunięto książkę',
    'book_delete_notification'    => 'Book successfully deleted',
    'book_sort'                   => 'posortowano książkę',
    'book_sort_notification'      => 'Book successfully re-sorted',

    // Bookshelves
    'bookshelf_create'            => 'created bookshelf',
    'bookshelf_create_notification'    => 'Bookshelf successfully created',
    'bookshelf_update'                 => 'zaktualizowano półkę',
    'bookshelf_update_notification'    => 'Bookshelf successfully updated',
    'bookshelf_delete'                 => 'usunięto półkę',
    'bookshelf_delete_notification'    => 'Bookshelf successfully deleted',

    // Favourites
    'favourite_add_notification' => '":name" został dodany do Twoich ulubionych',
    'favourite_remove_notification' => '":name" został usunięty z ulubionych',

    // MFA
    'mfa_setup_method_notification' => 'Metoda wieloskładnikowa została pomyślnie skonfigurowana',
    'mfa_remove_method_notification' => 'Metoda wieloskładnikowa pomyślnie usunięta',

    // Webhooks
    'webhook_create' => 'created webhook',
    'webhook_create_notification' => 'Webhook successfully created',
    'webhook_update' => 'updated webhook',
    'webhook_update_notification' => 'Webhook successfully updated',
    'webhook_delete' => 'deleted webhook',
    'webhook_delete_notification' => 'Webhook successfully deleted',

    // Other
    'commented_on'                => 'skomentował',
    'permissions_update'          => 'zaktualizowane uprawnienia',
];