feat: 止盈止损秒级监控市价平仓记交易记录，并加手数超限提醒。

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

templates/trade.html

@@ -55,6 +55,7 @@
                                 <label class="text-label">手数</label>
                                 <input type="number" id="trade-lots" min="1" step="1" value="1" {% if sizing_mode == 'risk' %}hidden{% endif %}>
                                 <input type="text" id="trade-lots-calc" class="lots-auto" readonly placeholder="填写止损后自动计算" {% if sizing_mode != 'risk' %}hidden{% endif %}>
+                                <p class="hint lots-warn text-loss" id="lots-warn" hidden></p>
                             </div>
                         </div>
 
@@ -97,7 +98,7 @@
 
             <div class="card trade-card" id="positions">
                 <h2>持仓监控</h2>
-                <p class="hint pos-hint">数据来自 CTP 柜台（交易所回报），浮盈等为柜台实际值。</p>
+                <p class="hint pos-hint">数据来自 CTP 柜台；设止盈/止损后程序在开盘期间每秒监控，触发即市价平仓并记入交易记录。</p>
                 <div class="card-body card-scroll" id="position-live-list">
                     <div class="empty-hint">{% if ctp_status.connected %}加载中…{% else %}请先连接 CTP 查看柜台持仓{% endif %}</div>
                 </div>