feat: add compare, trends routes, embedder service, and phase5 tests

app/templates/detail.html

@@ -117,5 +117,35 @@
     <p class="abstract-en">{{ paper.abstract }}</p>
   </section>
   {% endif %}
+
+  {# Phase 5: 图片画廊 #}
+  {% if paper_images %}
+  <section class="image-gallery">
+    <h2>论文图片</h2>
+    <div class="gallery-grid">
+      {% for img in paper_images %}
+      <div class="gallery-item">
+        <img src="{{ img.url }}" alt="{{ img.name }}" loading="lazy">
+        <div class="gallery-caption">{{ img.name }}</div>
+      </div>
+      {% endfor %}
+    </div>
+  </section>
+  {% endif %}
+
+  {# Phase 5: 相似论文推荐 #}
+  {% if similar_papers %}
+  <section class="similar-papers">
+    <h2>相似论文推荐</h2>
+    {% for sp in similar_papers %}
+    <div class="similar-paper-item">
+      <span class="similar-paper-title">
+        <a href="/paper/{{ sp.arxiv_id }}">{{ sp.title_zh }}</a>
+      </span>
+      <span class="similar-paper-dist">🎯 {{ "%.3f"|format(sp.distance) }}</span>
+    </div>
+    {% endfor %}
+  </section>
+  {% endif %}
 </article>
 {% endblock %}