feat: indicate family insurance eligibility

templates/booking/_participant_card.html.twig

@@ -4,6 +4,7 @@
 {% set isSubmitted = isSubmitted|default(false) %}
 {% set needsAttention = needsAttention|default(false) %}
 {% set attentionLabels = attentionLabels|default([]) %}
+{% set hintLabel = hintLabel|default(null) %}
 {% set mode = mode|default('create') %}
 
 {# Determine display states #}
@@ -75,6 +76,13 @@
                     {% endif %}
                 </div>
             {% endif %}
+            {# Additive informational hint - unlike attentionLabels this does not replace the
+               room/price line and is not styled as something the participant got wrong #}
+            {% if hintLabel and not isCanceled %}
+                <div class="mt-2 text-sm font-medium text-primary-light" {{ qa_attribute('participant-hint', index) }}>
+                    {{ hintLabel }}
+                </div>
+            {% endif %}
         </div>
         <div class="flex flex-col justify-center">
             {% if not isCanceled %}