fix(spec): enforce read-time budget and re-render invalid comment submissions

templates/blog/article_page.html

@@ -69,12 +69,20 @@
   {% empty %}
     <p>No comments yet.</p>
   {% endfor %}
+  {% if comment_form and comment_form.errors %}
+    <div aria-label="Comment form errors">
+      {{ comment_form.non_field_errors }}
+      {% for field in comment_form %}
+        {{ field.errors }}
+      {% endfor %}
+    </div>
+  {% endif %}
   <form method="post" action="{% url 'comment_post' %}">
     {% csrf_token %}
     <input type="hidden" name="article_id" value="{{ page.id }}" />
-    <input type="text" name="author_name" required />
-    <input type="email" name="author_email" required />
-    <textarea name="body" required></textarea>
+    <input type="text" name="author_name" value="{% if comment_form %}{{ comment_form.author_name.value|default:'' }}{% endif %}" required />
+    <input type="email" name="author_email" value="{% if comment_form %}{{ comment_form.author_email.value|default:'' }}{% endif %}" required />
+    <textarea name="body" required>{% if comment_form %}{{ comment_form.body.value|default:'' }}{% endif %}</textarea>
     <input type="text" name="honeypot" style="display:none" />
     <button type="submit">Post comment</button>
   </form>