Login + composer, two repos, one contract. Log in (a guest key is fine), write, publish:
<script type="module" src="https://nostr-client.github.io/login/login.js"></script> <script type="module" src="https://nostr-client.github.io/composer/composer.js"></script> <nostr-login></nostr-login> <nostr-composer></nostr-composer>