feat: strategy trade snapshots, DCA detail, and hub trend layout

Persist ended trend pullback and roll group snapshots to a unified records page; show replenishment tiers on instance and hub cards with horizontal single-position layout.

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

strategy_templates/strategy_trend_panel.html

@@ -125,7 +125,7 @@
                 ｜ <span class="accent">{{ trend_add_zone_label(t.direction) }} {{ price_fmt(sym, t.add_upper) }}</span>
                 ｜ 已补仓 <strong>{{ t.legs_done }}/{{ t.dca_legs }}</strong>
             </div>
-            <div class="plan-card-grid">
+            <div class="plan-card-grid plan-card-grid--metrics">
                 <div class="plan-cell">
                     <span class="lbl">均价</span>
                     <span class="val">{% if t.avg_entry_price is not none %}{{ price_fmt(sym, t.avg_entry_price) }}{% else %}—{% endif %}</span>
@@ -155,6 +155,22 @@
                     </span>
                 </div>
             </div>
+            {% if t.dca_levels %}
+            <div class="plan-dca-block">
+                <div class="plan-dca-title">补仓计划明细</div>
+                <table class="plan-dca-table">
+                    <tr><th>档位</th><th>触发价</th><th>张数</th><th>状态</th></tr>
+                    {% for lv in t.dca_levels %}
+                    <tr>
+                        <td>{{ lv.label }}</td>
+                        <td>{% if lv.price is not none %}{{ price_fmt(sym, lv.price) }}{% else %}—{% endif %}</td>
+                        <td>{% if lv.contracts is not none %}{{ amt_disp(sym, lv.contracts) }}{% else %}—{% endif %}</td>
+                        <td class="{% if lv.status == 'done' %}st-done{% else %}st-pending{% endif %}">{{ lv.status_label }}</td>
+                    </tr>
+                    {% endfor %}
+                </table>
+            </div>
+            {% endif %}
             <div class="plan-card-meta" style="margin-top:8px">
                 <form action="{{ url_for('trend_pullback_breakeven', pid=t.id) }}" method="post" class="form-row" style="margin:0;align-items:center" onsubmit="return confirm('确认保本？将结束本趋势计划，持仓移交「下单监控」（备注趋势回调计划），并在交易所同时挂保本止损与计划止盈；后续平仓会写入交易记录。');">
                     <label style="font-size:.78rem;color:#cfd3ef;display:flex;align-items:center;gap:6px">