持仓监控平仓自动记入交易记录，新增交易记录页与实盘资金设置

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

templates/settings.html

@@ -2,6 +2,16 @@
 {% block title %}系统设置 - 国内期货监控系统{% endblock %}
 {% block content %}
 
+<div class="card">
+    <h2>实盘资金</h2>
+    <form action="{{ url_for('settings') }}" method="post" class="form-row">
+        <input type="hidden" name="action" value="capital">
+        <input name="live_capital" type="number" step="0.01" min="0" placeholder="实盘资金（元）" value="{{ live_capital }}" style="flex:1;min-width:200px;max-width:320px">
+        <button type="submit" class="btn-primary">保存</button>
+    </form>
+    <p class="hint" style="margin-top:.75rem">用于持仓监控的风险比例、仓位占比计算，保存在数据库中。</p>
+</div>
+
 <div class="card">
     <h2>行情说明</h2>
     <p class="hint" style="font-size:.9rem;line-height:1.6">