feat: enhance UI, refactor services, improve templates and tests

- Replace image_extractor with pdf_image_extractor service
- Enhance pi_client with expanded API capabilities
- Improve summarizer service with additional features
- Update admin routes with more endpoints
- Add login page template
- Enhance detail page with comprehensive layout
- Improve search and trends pages
- Update base template with additional elements
- Refactor tests for better coverage
- Add validate_summary script
- Update project configuration and dependencies

app/templates/search.html

@@ -22,16 +22,7 @@ endblock %} {% block content %}
           type="radio"
           name="mode"
           value="keyword"
-          {%
-          if
-          mode=""
-          ="keyword"
-          or
-          not
-          mode
-          %}checked{%
-          endif
-          %}
+          {% if mode == "keyword" or not mode %}checked{% endif %}
         />
         关键词
       </label>
@@ -40,13 +31,7 @@ endblock %} {% block content %}
           type="radio"
           name="mode"
           value="semantic"
-          {%
-          if
-          mode=""
-          ="semantic"
-          %}checked{%
-          endif
-          %}
+          {% if mode == "semantic" %}checked{% endif %}
         />
         语义搜索
       </label>
@@ -142,11 +127,17 @@ endblock %} {% block content %}
         <span
           class="summary-badge summary-{{ paper.summary_status.status if paper.summary_status else 'none' }}"
         >
-          {% if not paper.summary_status or paper.summary_status.status ==
-          'pending' %} 未总结 {% elif paper.summary_status.status ==
-          'processing' %} 🔄 总结中 {% elif paper.summary_status.status in
-          ('failed', 'permanent_failure') %} ❌ 总结失败 {% elif
-          paper.summary_status.status == 'done' %} ✅ 已总结 {% endif %}
+          {# djlint:off #}
+          {% if not paper.summary_status or paper.summary_status.status == 'pending' %}
+            未总结
+          {% elif paper.summary_status.status == 'processing' %}
+            🔄 总结中
+          {% elif paper.summary_status.status in ('failed', 'permanent_failure') %}
+            ❌ 总结失败
+          {% elif paper.summary_status.status == 'done' %}
+            ✅ 已总结
+          {% endif %}
+          {# djlint:on #}
         </span>
         <a href="/paper/{{ paper.arxiv_id }}" class="btn-detail">详情 →</a>
       </div>