Add collapsible rule descriptions to trade, strategy, and key pages.

Shared module-rules styling; key monitor rules collapsed by default like other modules.

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

templates/trade.html

@@ -60,6 +60,29 @@
                         </div>
                     </div>
 
+                    <details class="module-rules">
+                        <summary>规则说明</summary>
+                        <div class="module-rules-body">
+                            <p><strong>开仓</strong></p>
+                            <ul>
+                                <li>须 <strong>CTP 已连接</strong> 且处于<strong>交易时段</strong>；账户风控允许（顶栏状态）</li>
+                                <li>固定金额计仓、开启<strong>移动保本</strong>时须填写<strong>止损</strong></li>
+                                <li>手数：固定手数，或按止损距离与单笔风险金额自动计算；保证金占用不超过系统设置上限</li>
+                                <li>限价未成交 → 挂单中，超时自动撤单（系统设置可改分钟数）</li>
+                            </ul>
+                            <p><strong>止盈 / 止损 / 移动保本</strong></p>
+                            <ul>
+                                <li>成交后由程序<strong>本地监控</strong>；触及止盈或止损 → 市价平仓</li>
+                                <li><strong>移动保本</strong>：须填止损、不设固定止盈；达 1R 止损移至开仓±缓冲跳，2R 移 1R，依次类推</li>
+                                <li>手动平仓写入交易记录；当日手动平仓次数超限 → 进入冷静期</li>
+                            </ul>
+                            <p><strong>可开仓品种表</strong></p>
+                            <ul>
+                                <li>按权益与保证金上限筛选；权益 ≤20 万或 CTP 未连接时仅四品种（玉米、豆粕、甲醇、螺纹钢）</li>
+                            </ul>
+                        </div>
+                    </details>
+
                     <div class="trade-form-rows">
                         <div class="trade-form-line line-3">
                             <div class="symbol-wrap trade-field symbol-mains">