Paste authors without a stored picture use the network avatar address

ddiff --git a/server/render/pages.js b/server/render/pages.js
iindex 4668627..8029d81 100644
---- a/server/render/pages.js
++++ b/server/render/pages.js
@@@ -40,8 +40,11 @@ function authorHtml(p, { link = true } = {}) {
      const name = authorName(p);
      const initial = esc(name.trim()[0] || '?').toUpperCase();
      const avatarSrc = p.avatar_url ? (/^https?:\/\//i.test(p.avatar_url) ? p.avatar_url : `${config.liveUrl}${p.avatar_url.startsWith('/') ? '' : '/'}${p.avatar_url}`) : null;
--    const avatar = avatarSrc
--        ? `<img class="avatar" src="${esc(avatarSrc)}" alt="" loading="lazy" width="22" height="22">`
++    // No picture on the paste's own record: the network's avatar address answers for any account (the person's
++    // picture, or a generated initial), so an author looks the same here as on every other OpenVibe site.
++    const netAvatar = !avatarSrc && p.username ? `${config.networkUrl}/avatar/${encodeURIComponent(p.username)}?s=44` : null;
++    const avatar = (avatarSrc || netAvatar)
++        ? `<img class="avatar" src="${esc(avatarSrc || netAvatar)}" alt="" loading="lazy" width="22" height="22">`
          : `<span class="avatar avatar-letter" aria-hidden="true">${initial}</span>`;
      const inner = `${avatar}<span>${esc(name)}</span>`;
      if (!link || !p.username) return `<span class="author">${inner}</span>`;