fix: 滚仓拒绝原因页内展示，斐波/突破隐藏预览按钮

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

strategy_templates/strategy_roll_panel.html

@@ -6,7 +6,7 @@
             <strong>仅人工提交</strong>；须先在「实盘下单」有同向持仓。仅<strong>以损定仓</strong>模式可用。<br>
             做多/做空各最多滚仓 <strong>3</strong> 次（仅计已成交腿）；止盈<strong>锁定首仓</strong>不变。<br>
             风险比例读取所选监控单，<strong>不可手改</strong>；打到新止损时合并持仓亏损 ≈ 1 个风险单位（当前基数 × 监控 risk%）。<br>
-            斐波/突破为<strong>程序监控</strong>（mark 价穿越触发），触价后市价加仓；同时仅允许 <strong>1</strong> 条监控中腿，提交后<strong>不可修改</strong>，可删除。<br>
+            斐波/突破为<strong>程序监控</strong>（mark 价穿越触发），触价后市价加仓；填写后直接点「执行滚仓」（无需预览）。同时仅允许 <strong>1</strong> 条监控中腿，提交后<strong>不可修改</strong>，可删除。<br>
             手动平仓后滚仓监控自动结束；<strong>已成交腿历史保留</strong>供复盘。<br>
             <a href="/strategy/roll/docs" target="_blank" rel="noopener" class="roll-doc-link">→ 顺势加仓完整逻辑说明</a><br>
             {% if roll_trend_active %}<span style="color:#ff8f8f">当前有运行中的趋势回调计划，请先结束后再滚仓。</span>{% endif %}
@@ -44,11 +44,11 @@
             <input name="breakthrough_price" id="roll-breakout" step="any" placeholder="突破价">
         </span>
         <input name="new_stop_loss" id="roll-stop-loss" type="number" min="0" step="any" placeholder="新止损价" required>
-        <button type="button" id="roll-preview-btn" {% if roll_trend_active %}disabled{% endif %}>预览</button>
-        <button type="submit" id="roll-submit-btn" {% if roll_trend_active %}disabled style="opacity:.5"{% endif %} disabled>执行滚仓</button>
+        <button type="button" id="roll-preview-btn" class="roll-preview-btn" {% if roll_trend_active %}disabled{% endif %}>预览</button>
+        <button type="submit" id="roll-submit-btn" {% if roll_trend_active %}disabled style="opacity:.5" data-trend-locked="1"{% endif %} disabled>执行滚仓</button>
     </form>
 
-    <div id="roll-preview-box" class="rule-tip roll-preview-box" style="display:none">
+    <div id="roll-preview-box" class="rule-tip roll-preview-box" style="display:none" role="status" aria-live="polite">
         <div id="roll-preview-text">—</div>
         <div id="roll-countdown" class="roll-countdown" style="display:none"></div>
     </div>
@@ -101,4 +101,4 @@
     </table>
     </div>
 </div>
-<script src="/static/strategy_roll.js?v=3"></script>
+<script src="/static/strategy_roll.js?v=4"></script>