feat(binance): recover live position when local monitor was lost

Detect exchange positions without active order_monitors, show a recover banner on the trade page, and reactivate stopped monitors with optional TP/SL restore via API.

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

crypto_monitor_binance/templates/index.html

@@ -402,6 +402,7 @@
         </div>
         <div class="card">
             <h2 style="margin-bottom:8px">实时持仓</h2>
+            <div id="orphan-position-recover" class="orphan-recover-banner" style="display:none;margin-bottom:10px;padding:10px 12px;background:#2a2210;border:1px solid #6b5420;border-radius:6px;font-size:.9rem;color:#e8d5a8"></div>
             <div class="panel-scroll pos-list pos-list-live">
                 {% for o in order %}
                 <div class="pos-card" id="order-row-{{ o.id }}"
@@ -1866,6 +1867,46 @@ function paintPriceTrend(el, key, value){
     lastPriceMap[key] = value;
 }
 
+function renderOrphanRecoverBanner(orphans){
+    const el = document.getElementById("orphan-position-recover");
+    if(!el) return;
+    const liveCards = document.querySelectorAll(".pos-list-live .pos-card");
+    if(liveCards.length > 0 || !orphans || !orphans.length){
+        el.style.display = "none";
+        el.innerHTML = "";
+        return;
+    }
+    const o = orphans[0];
+    const dir = o.direction === "short" ? "空" : "多";
+    const mid = o.recoverable_monitor_id;
+    let html = `检测到交易所仍有 <strong>${o.symbol}</strong> ${dir}仓，但本地监控已中断（误同步时可能无交易记录）。`;
+    if(mid){
+        const tpslHint = (o.plan_stop_loss && o.plan_take_profit) ? "并挂止盈止损" : "";
+        html += ` <button type="button" class="pos-entrust-btn" onclick="recoverLivePosition(${mid})">恢复监控${tpslHint}</button>`;
+    } else {
+        html += " 未找到可恢复的监控记录，需在服务器数据库处理。";
+    }
+    el.innerHTML = html;
+    el.style.display = "block";
+}
+
+async function recoverLivePosition(monitorId){
+    const withTpsl = confirm("确认恢复本地实时监控？若原计划有止盈止损，将尝试重新挂到交易所。");
+    if(!withTpsl) return;
+    try{
+        const res = await fetch("/api/recover_live_position", {
+            method: "POST",
+            headers: {"Content-Type": "application/json"},
+            body: JSON.stringify({monitor_id: monitorId, place_tpsl: true})
+        });
+        const data = await res.json();
+        alert(data.msg || (data.ok ? "已恢复" : "失败"));
+        if(data.ok) location.reload();
+    }catch(e){
+        alert("恢复失败：" + e);
+    }
+}
+
 function refreshPriceSnapshot(){
     fetch("/api/price_snapshot").then(r=>r.json()).then(data=>{
         const updatedEl = document.getElementById("price-last-updated");
@@ -1941,6 +1982,7 @@ function refreshPriceSnapshot(){
             paintPlanTpslDisplay(o.id, o);
             if(window.TimeCloseUI) TimeCloseUI.paintOrderTimeClose(o);
         });
+        renderOrphanRecoverBanner(data.orphan_live_positions);
     }).catch(()=>{});
 }