{% comment %}
"Sign in with VisualEyes" button.

Place inside the login <form method="post"> that holds the username field.
The button submits that form to ve_start (overriding the form action via
formaction) and skips HTML5 validation (formnovalidate) so a blank password
field does not block the passwordless flow. No JavaScript required.
{% endcomment %}
<button type="submit"
        class="ve-signin-button"
        formaction="{% url 'visualeyes:visualeyes_start' %}"
        formmethod="post"
        formnovalidate
        aria-describedby="{{ username_field_id }}">
  <svg class="ve-mark" width="20" height="20" viewBox="0 0 24 24"
       aria-hidden="true" focusable="false">
    <rect x="2" y="2" width="8" height="8" rx="2" fill="currentColor"/>
    <rect x="14" y="2" width="8" height="8" rx="2" fill="currentColor"/>
    <rect x="2" y="14" width="8" height="8" rx="2" fill="currentColor"/>
    <path d="M13 18 l3 3 l6 -7" fill="none" stroke="currentColor"
          stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round"/>
  </svg>
  <span>Sign in with VisualEyes</span>
</button>