A static archive of our 2021 camp site.
For future archivers' benefit: in a nutshell, the process is ...
Pull database and files from Pantheon Live environment.
$ lando pull --code=none --database=live --files=live
Composer require Tome module.
$ lando composer require drupal/tome
Drush enable Tome Static submodule.
$ lando drush en tome tome_static
Export the Drupal site.
$ lando drush tome:export -y
$ lando drush tome:static --uri=https://2021.drupalcamp.nyc
This exports the static HTML site to the html directory in the project root.
Then you need to deploy that to a new repo on GitHub, configured appropriately for GitHub Pages.