grav-admin-first/user/plugins/admin/themes/grav/templates/partials/nav-user-details.html.twig

<div id="offline-status">
    <span><i class="fa fa-fw fa-plane"></i> You are offline</span>
</div>
{% set user = admin.user %}
{% set route = grav['flex_objects'] is defined ? grav['flex_objects'].adminRoute(user) : '' %}
{% if route == '' %}
    {% set route = '/user/' ~ user.username %}
{% endif %}

<div id="admin-user-details">
    <a href="{{ base_url_relative ~ route }}">
        {% include 'partials/nav-user-avatar.html.twig' %}

        <div class="admin-user-names">
            <h4>{{ user.fullname|e }} {% if user.twofa_enabled and config.plugins.admin.twofa_enabled %}<span class="badge">2FA</span>{% endif %}</h4>
            <h5>{{ user.title|e }}</h5>
        </div>
    </a>
</div>