client/src/partials/settings-toolbar-controls.html

<span class="online-count" aria-label="Online users">
    <span class="online-count-label">Online:</span>
    <span id="online_count_value" class="online-count-value" aria-live="polite">—</span>
</span>
<button id="settings_btn" class="settings-btn" title="Settings" data-i18n="title">
    <span class="settings-icon">⚙️</span>
</button>