feat: overhaul UI styling, improve templates, enhance services and tests

app/templates/index.html

@@ -1,8 +1,5 @@
-{% extends "base.html" %}
-
-{% block title %}{{ page_title }} — HF Daily Papers{% endblock %}
-
-{% block content %}
+{% extends "base.html" %} {% block title %}{{ page_title }} — HF Daily Papers{%
+endblock %} {% block content %}
 <div class="date-nav">
   {% if prev_day %}
   <a href="/day/{{ prev_day }}" class="date-nav-btn">← 前一天</a>
@@ -16,9 +13,8 @@
 
 {% if papers %}
 <div class="paper-list">
-  {% for paper in papers %}
-  {% include "partials/paper_card.html" %}
-  {% endfor %}
+  {% for paper in papers %} {% include "partials/paper_card.html" %} {% endfor
+  %}
 </div>
 {% else %}
 <div class="empty-state">
@@ -30,7 +26,11 @@
 <div class="date-quick-nav">
   <span>有数据的日期：</span>
   {% for d in available_dates[:10] %}
-  <a href="/day/{{ d }}" class="date-chip {% if d == current_date %}active{% endif %}">{{ d }}</a>
+  <a
+    href="/day/{{ d }}"
+    class="date-chip {% if d == current_date %}active{% endif %}"
+    >{{ d }}</a
+  >
   {% endfor %}
 </div>
 {% endblock %}