Add themes, static assets, and logo

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Co-Authored-By: Claude <noreply@anthropic.com>

themes/vanilla-js/detail-template.html

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+<!-- Detail Template - Full post view -->
+<template id="post-detail-template">
+  <article class="post-detail" data-post-id="{{id}}" data-platform="{{platform}}">
+    <header class="detail-header">
+      <div class="breadcrumb">
+        <span class="platform-badge platform-{{platform}}">{{platform}}</span>
+        <span class="separator">/</span>
+        {% if source %}<span class="source-link">{{source}}</span>{% endif %}
+      </div>
+
+      <h1 class="detail-title">{{title}}</h1>
+
+      <div class="detail-meta">
+        <div class="author-info">
+          <span class="author-name">{{author}}</span>
+          <time class="post-time" datetime="{{timestamp}}">{{formatDateTime(timestamp)}}</time>
+        </div>
+
+        <div class="post-stats">
+          <span class="stat-item">
+            <i class="icon-score">▲</i> {{score}} points
+          </span>
+          <span class="stat-item">
+            <i class="icon-replies">💬</i> {{replies}} comments
+          </span>
+        </div>
+      </div>
+    </header>
+
+    {% if content %}
+      <div class="detail-content">
+        {{ renderMarkdown(content)|safe }}
+      </div>
+    {% endif %}
+
+    {% if tags %}
+      <div class="detail-tags">
+        {% for tag in tags if tag %}
+          <span class="tag">{{tag}}</span>
+        {% endfor %}
+      </div>
+    {% endif %}
+
+    {{comments_section|safe}}
+
+    <footer class="detail-footer">
+      <a href="{{url}}" target="_blank" rel="noopener" class="source-link-btn">
+        View on {{platform}}
+      </a>
+    </footer>
+  </article>
+</template>