Add themes, static assets, and logo

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

themes/modern-card-ui/detail-template.html

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+<!-- Modern Card UI - Post Detail Template -->
+<template id="modern-detail-template">
+  <article class="post-detail" data-post-id="{{id}}" data-platform="{{platform}}">
+    <div class="detail-container">
+      <!-- Header Card -->
+      <header class="detail-header">
+        <div class="header-meta-card">
+          <div class="meta-row">
+            <span class="platform-badge platform-{{platform}}">{{platform|upper}}</span>
+            {% if source %}
+              <span class="detail-source">in {{source}}</span>
+            {% endif %}
+          </div>
+
+          <div class="headline-section">
+            <h1 class="detail-title">{{title}}</h1>
+            <div class="byline">
+              <span class="author-link">by {{author}}</span>
+              <span class="publication-time">{{formatDateTime(timestamp)}}</span>
+            </div>
+          </div>
+
+          <div class="stats-row">
+            <div class="stat-item">
+              <span class="stat-number">{{score}}</span>
+              <span class="stat-label">points</span>
+            </div>
+            <div class="stat-item">
+              <span class="stat-number">{{replies}}</span>
+              <span class="stat-label">comments</span>
+            </div>
+          </div>
+
+          {% if tags %}
+          <div class="detail-tags">
+            {% for tag in tags if tag %}
+              <span class="tag-pill">{{tag}}</span>
+            {% endfor %}
+          </div>
+          {% endif %}
+        </div>
+      </header>
+
+      <!-- Article Body -->
+      {% if content %}
+      <section class="article-body">
+        <div class="article-content">
+          {{ renderMarkdown(content)|safe }}
+        </div>
+      </section>
+      {% endif %}
+
+      <!-- Action Row -->
+      <div class="article-actions">
+        <a href="{{url}}" target="_blank" class="action-button primary">
+          View Original
+        </a>
+      </div>
+
+      <!-- Comments Section -->
+      {% if comments_section %}
+      <section class="comments-section">
+        <h2 class="comments-header">Comments ({{replies}})</h2>
+        {{comments_section|safe}}
+      </section>
+      {% endif %}
+    </div>
+  </article>
+</template>