How I Installed a Drupal Theme Using Composer on Pantheon

Описание: I installed PHP, Composer, and an SSH key so my computer could securely connect to Pantheon. Then I switched the Pantheon site to Git mode, cloned the repository to my computer, and used PowerShell to run Composer commands that installed the new Drupal theme. After fixing a PHP extension issue, I committed the updated composer files and pushed them back to Pantheon. Finally, the theme appeared in Drupal’s Appearance page, where I enabled it successfully.