Replace Helcim integration with WooCommerce Stripe

deploy/backup.sh

@@ -43,7 +43,7 @@ $COMPOSE run --rm -T -u www-data wordpress tar -czf - -C /var/www/html/wp-conten
   > "$BACKUP_DIR/uploads-${TIMESTAMP}.tar.gz"
 
 echo "==> archiving environment config"
-# Every API key (Booksrun/Ingram/Helcim/MailerLite/Hardcover), the WP admin
+# Every API key (Booksrun/Ingram/Stripe/MailerLite/Hardcover), the WP admin
 # bootstrap credentials, and both DB passwords live ONLY in this one
 # gitignored host file — losing the host without this backed up loses all of
 # it, even with the DB dump and uploads intact. Same trust model as the DB