{% comment %}
Testimonial (04-interfaces.md section 4d): a quote card, the social-proof
block. Structural, consumed via {% include %} (BR-BW-MKT §4d structural-
include doctrine).

Required context: quote.

Optional context:
  author  (str): the attribution name.
  role    (str): the attribution line (e.g. "CTO, Acme Ltd").
  avatar  (str, an image URL): rendered with alt implied from author (never
          an unlabelled image, per the standing a11y non-goal). Omitted
          renders a text-only quote card, never a broken image.
  logo    (safe string): a company logo, pre-rendered safe HTML. The caller
          owns escaping, matching _stat.html's sparkline convention.
{% endcomment %}
{% if quote %}
<figure class="bw-testimonial">
  <blockquote class="bw-testimonial__quote">
    <p>{{ quote }}</p>
  </blockquote>
  {% if author or role or avatar or logo %}
    <figcaption class="bw-testimonial__attribution">
      {% if avatar %}<img class="bw-testimonial__avatar" src="{{ avatar }}" alt="{{ author }}">{% endif %}
      <div class="bw-testimonial__attribution-text">
        {% if author %}<span class="bw-testimonial__author">{{ author }}</span>{% endif %}
        {% if role %}<span class="bw-testimonial__role">{{ role }}</span>{% endif %}
      </div>
      {% if logo %}<div class="bw-testimonial__logo">{{ logo }}</div>{% endif %}
    </figcaption>
  {% endif %}
</figure>
{% endif %}