Add key monitor and live trade toggles to instance nav display prefs.

Defaults stay on; users can hide them like other top-bar tabs.

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/instance/templates/index.html

@@ -118,8 +118,8 @@
     </div>
     <div class="top-nav">
         <a href="/dashboard" data-embed-tab="dashboard" class="{% if page == 'dashboard' %}active{% endif %}"{% if not display.show_nav_dashboard %} style="display:none"{% endif %}>数据看板</a>
-        <a href="/key_monitor" class="{% if page == 'key_monitor' %}active{% endif %}">关键位监控</a>
-        <a href="/trade" class="{% if page == 'trade' %}active{% endif %}">实盘下单</a>
+        <a href="/key_monitor" class="{% if page == 'key_monitor' %}active{% endif %}"{% if not display.show_nav_key_monitor %} style="display:none"{% endif %}>关键位监控</a>
+        <a href="/trade" class="{% if page == 'trade' %}active{% endif %}"{% if not display.show_nav_trade %} style="display:none"{% endif %}>实盘下单</a>
         {% if not intraday_discipline and display.show_nav_strategy %}
         <a href="/strategy" class="{% if page in ('strategy', 'strategy_trend', 'strategy_roll') %}active{% endif %}">策略交易</a>
         {% endif %}