Changed URL query parameter from 'duckmode' to 'lang=quack' to improve clarity and maintain consistency with other language parameter conventions. This update helps ensure better readability and uniformity across the application.
Introduced a new "duckmode" feature which replaces text content on the webpage with "quack" variations, while preserving capitalization and punctuation. The feature activates when the "duckmode" parameter is present in the URL. Included the necessary script and enqueued it in the theme's functions.php.