中控增加下单，关键位，系统设置

manual_trading_hub/static/app.js

@@ -105,8 +105,13 @@
       kmap[k.id] = k;
     });
     let inner = "";
+    const agOk = ag.ok !== false;
+    const agErr = ag.error || row.error || "";
     if (!row.http_ok) {
       inner = `<div class="err">${esc(row.error || "子代理不可用")}</div>`;
+    } else if (!agOk) {
+      inner = `<div class="err">${esc(agErr || "子代理返回失败")}</div>`;
+      inner += `<div class="rule-tip">请检查：PM2 子代理是否在对应 crypto_monitor_* 目录加载了 .env；<code>curl ${esc(row.agent_url || "")}/status</code></div>`;
     } else {
       const posRows = pos
         .map(