@threadi thank you for following up on this. Totally agree on the no solution label, so I decided to give it another try. However, while I was able to define a rewrite rule for any given path, like so:
// wp-content/themes/<theme_name>/functions.php
function homepage_to_category_rewrite() {
add_rewrite_rule('^some/path/?$', array('category_name' => 'corveta-libera'), 'top');
}
add_action('init', 'homepage_to_category_rewrite');
I could not find any way to do it for the homepage. Any regex matching empty paths like ‘^$’, ‘^/?$’, ‘^’ simply don’t have any effect.
So I ended up with a rewrite rule in .htaccess:
RewriteRule ^/?$ wp/index.php?category_name=corveta-libera [L]