交易记录Tab增加icon图标

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

ft-app/app/templates/trades.html

@@ -22,8 +22,8 @@
 </style>
 
 <div class="tabs">
-  <a href="/trades/" class="tab-btn{% if view != 'closed' %} active{% endif %}">持仓</a>
-  <a href="/trades/?view=closed" class="tab-btn{% if view == 'closed' %} active{% endif %}">已平仓</a>
+  <a href="/trades/" class="tab-btn{% if view != 'closed' %} active{% endif %}">📋 持仓</a>
+  <a href="/trades/?view=closed" class="tab-btn{% if view == 'closed' %} active{% endif %}">📊 已平仓</a>
 </div>
 
 {% if view != 'closed' %}