{% comment %}
Honest "the builder cannot run right now" panel.

Included by every builder page.  It never renders a dead button: the caller is
told exactly which condition failed (feature switched off, no API key, budget
exhausted) and which configuration key an administrator has to set.  The
`availability` dict is built by `siteBuilder.views._availability`.
{% endcomment %}
{% if not availability.available %}
<div class="cpb-unavailable mb-4" role="status">
  <div class="d-flex gap-3">
    <div class="flex-shrink-0 fs-4" style="color: var(--cp-accent);" aria-hidden="true">
      <i class="fa-solid fa-circle-exclamation"></i>
    </div>
    <div class="flex-grow-1">
      <div class="fw-semibold mb-1">AI generation is unavailable right now</div>
      <p class="mb-2 small">{{ availability.reason }}</p>
      {% if availability.configKey %}
        <div class="small cpb-muted">
          An administrator needs to set this in
          <span class="cpb-mono">{{ availability.configFile }}</span>:
          <code>{{ availability.configKey }}</code>
        </div>
      {% endif %}
      <div class="small cpb-muted mt-2">
        You can still browse the template catalogue and edit any content you have
        already generated — only new generations are blocked.
      </div>
    </div>
  </div>
</div>
{% endif %}