币本位实时盈亏/期权浮盈按ETH展示，避免两位小数抹成0.00U

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

manual_trading_hub/static/dashboard.js

@@ -40,6 +40,29 @@
     return `${n > 0 ? "+" : "-"}${abs}U`;
   }
 
+  function optPremiumCcyOf(p) {
+    const ccy = String((p && p.premium_ccy) || "").trim().toUpperCase();
+    if (ccy) return ccy;
+    const mode = String((p && p.margin_mode) || "").toLowerCase();
+    const inst = String((p && p.inst_id) || "");
+    if (mode === "coin" || (inst.indexOf("-USD-") >= 0 && inst.indexOf("_UM") < 0)) {
+      return (inst.split("-")[0] || "ETH").toUpperCase() || "ETH";
+    }
+    return "USDC";
+  }
+
+  function pnlSignedOpt(v, ccy) {
+    const n = Number(v);
+    if (!Number.isFinite(n)) return "—";
+    const unit = String(ccy || "USDC").toUpperCase();
+    if (unit === "ETH" || unit === "BTC") {
+      const abs = Math.abs(n).toFixed(8).replace(/\.?0+$/, "") || "0";
+      const sign = n > 0 ? "+" : n < 0 ? "-" : "";
+      return `${sign}${abs} ${unit}`;
+    }
+    return pnlSigned(n, 2);
+  }
+
   function esc(s) {
     return String(s == null ? "" : s)
       .replace(/&/g, "&amp;")
@@ -338,7 +361,7 @@
       <td>${p.idx_px != null ? fmt(p.idx_px, 0) : "—"}</td>
       <td><span class="${targetCls}">${esc(target)}</span></td>`;
     if (showPnl) {
-      html += `<td class="${pnlClass(net)}">${net != null ? pnlSigned(net, 2) : "—"}</td>
+      html += `<td class="${pnlClass(net)}">${net != null ? pnlSignedOpt(net, optPremiumCcyOf(p)) : "—"}</td>
       <td class="${pnlClass(roi)}">${roi != null ? esc(Number(roi).toFixed(2)) + "%" : "—"}</td>`;
     }
     html += "</tr>";