fix: address QA review findings

1. Typography: install @tailwindcss/typography and add to plugins so prose
   classes render correctly in article/about/legal templates.

2. Callout block: fix icon branches to match CalloutBlock.ICON_CHOICES
   (info/warning/trophy/tip). Previous template branched on error/success
   which are unreachable; info fell through to else silently.

3. Nav newsletter feedback: remove 'hidden' class from desktop nav
   data-newsletter-message element. JS sets textContent only; hidden
   class prevented message from ever being visible.

4. Popular Articles sidebar: add numbered Popular Articles widget to home
   page sidebar matching wireframe, using latest_articles context with
   alternating cyan/pink number accents and read_time_mins.

Rebuild CSS: typography plugin grows output from 24KB to 47KB.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

templates/blog/blocks/callout_block.html

@@ -1,12 +1,12 @@
 <div class="bg-zinc-100 dark:bg-zinc-900 border border-zinc-200 dark:border-zinc-800 p-6 my-8 flex items-start gap-4
-  {% if value.icon == 'warning' %}border-l-4 border-l-yellow-400{% elif value.icon == 'error' %}border-l-4 border-l-red-500{% elif value.icon == 'success' %}border-l-4 border-l-green-500{% else %}border-l-4 border-l-brand-cyan{% endif %}">
+  {% if value.icon == 'warning' %}border-l-4 border-l-yellow-400{% elif value.icon == 'trophy' %}border-l-4 border-l-brand-pink{% elif value.icon == 'tip' %}border-l-4 border-l-green-500{% else %}border-l-4 border-l-brand-cyan{% endif %}">
   <div class="shrink-0 mt-0.5">
     {% if value.icon == 'warning' %}
       <svg class="w-6 h-6 text-yellow-400" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" d="M12 9v3.75m-9.303 3.376c-.866 1.5.217 3.374 1.948 3.374h14.71c1.73 0 2.813-1.874 1.948-3.374L13.949 3.378c-.866-1.5-3.032-1.5-3.898 0L2.697 16.126ZM12 15.75h.007v.008H12v-.008Z" /></svg>
-    {% elif value.icon == 'error' %}
-      <svg class="w-6 h-6 text-red-500" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" d="M12 9v3.75m9-.75a9 9 0 1 1-18 0 9 9 0 0 1 18 0Zm-9 3.75h.008v.008H12v-.008Z" /></svg>
-    {% elif value.icon == 'success' %}
-      <svg class="w-6 h-6 text-green-500" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" d="M9 12.75 11.25 15 15 9.75M21 12a9 9 0 1 1-18 0 9 9 0 0 1 18 0Z" /></svg>
+    {% elif value.icon == 'trophy' %}
+      <svg class="w-6 h-6 text-brand-pink" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" d="M16.5 18.75h-9m9 0a3 3 0 0 1 3 3h-15a3 3 0 0 1 3-3m9 0v-3.375c0-.621-.503-1.125-1.125-1.125h-.871M7.5 18.75v-3.375c0-.621.504-1.125 1.125-1.125h.872m5.007 0H9.497m5.007 0a7.454 7.454 0 0 1-.982-3.172M9.497 14.25a7.454 7.454 0 0 0 .981-3.172M5.25 4.236c-.982.143-1.954.317-2.916.52A6.003 6.003 0 0 0 7.73 9.728M5.25 4.236V4.5c0 2.108.966 3.99 2.48 5.228M5.25 4.236V2.721C7.456 2.41 9.71 2.25 12 2.25c2.291 0 4.545.16 6.75.47v1.516M7.73 9.728a6.726 6.726 0 0 0 2.748 1.35m8.272-6.842V4.5c0 2.108-.966 3.99-2.48 5.228m2.48-5.492a46.32 46.32 0 0 1 2.916.52 6.003 6.003 0 0 1-5.395 4.972m0 0a6.726 6.726 0 0 1-2.749 1.35m0 0a6.772 6.772 0 0 1-3.044 0" /></svg>
+    {% elif value.icon == 'tip' %}
+      <svg class="w-6 h-6 text-green-500" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" d="M12 18v-5.25m0 0a6.01 6.01 0 0 0 1.5-.189m-1.5.189a6.01 6.01 0 0 1-1.5-.189m3.75 7.478a12.06 12.06 0 0 1-4.5 0m3.75 2.383a14.406 14.406 0 0 1-3 0M14.25 18v-.192c0-.983.658-1.823 1.508-2.316a7.5 7.5 0 1 0-7.517 0c.85.493 1.509 1.333 1.509 2.316V18" /></svg>
     {% else %}
       <svg class="w-6 h-6 text-brand-cyan" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" d="m11.25 11.25.041-.02a.75.75 0 0 1 1.063.852l-.708 2.836a.75.75 0 0 0 1.063.853l.041-.021M21 12a9 9 0 1 1-18 0 9 9 0 0 1 18 0Zm-9-3.75h.008v.008H12V8.25Z" /></svg>
     {% endif %}

templates/blog/home_page.html

@@ -119,7 +119,26 @@
       {% include 'components/newsletter_form.html' with source='sidebar' label='Subscribe' %}
     </div>
 
-    <!-- Topics -->
+    <!-- Popular Articles -->
+    {% if latest_articles %}
+    <div>
+      <h4 class="font-display font-bold mb-4 uppercase tracking-widest text-zinc-500 text-sm">Popular Articles</h4>
+      <ul class="space-y-4">
+        {% for article in latest_articles %}
+        <li class="group">
+          <a href="{{ article.url }}" class="flex gap-4 items-start">
+            <span class="font-display font-black text-2xl text-zinc-300 dark:text-zinc-800 group-hover:text-brand-{% cycle 'cyan' 'pink' 'cyan' 'pink' 'cyan' %} transition-colors">0{{ forloop.counter }}</span>
+            <div>
+              <h5 class="font-display font-bold text-sm leading-tight group-hover:text-brand-cyan transition-colors">{{ article.title }}</h5>
+              <div class="text-xs font-mono text-zinc-500 mt-1">{{ article.read_time_mins }} min read</div>
+            </div>
+          </a>
+        </li>
+        {% endfor %}
+      </ul>
+    </div>
+    {% endif %}
+
     {% if available_tags %}
     <div>
       <h4 class="font-display font-bold mb-4 uppercase tracking-widest text-zinc-500 text-sm">Explore Topics</h4>

templates/components/nav.html

@@ -21,7 +21,7 @@
           class="bg-transparent border border-zinc-300 dark:border-zinc-700 px-3 py-2 text-brand-dark dark:text-brand-light font-mono text-sm focus:outline-none focus:border-brand-pink transition-colors w-44" />
         <input type="text" name="honeypot" style="display:none" />
         <button type="submit" class="px-5 py-2.5 bg-brand-dark dark:bg-brand-light text-brand-light dark:text-brand-dark font-display font-bold hover:-translate-y-1 hover:shadow-solid-dark dark:hover:shadow-solid-light transition-all border border-transparent dark:border-zinc-700 whitespace-nowrap">Subscribe</button>
-        <p data-newsletter-message aria-live="polite" class="font-mono text-xs text-brand-cyan hidden"></p>
+        <p data-newsletter-message aria-live="polite" class="font-mono text-xs text-brand-cyan min-h-[1rem]"></p>
       </form>
     </div>