修复实例顶栏实时盈亏二次折算：币本位 options 浮盈已是 U，前端不再乘指数。

约 +4.3U 被当成 ETH 再 ×2700 显示成 +1.1万U；顶栏改为直接按 U 展示/与永续相加。

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

lib/instance/templates/index.html

@@ -1642,19 +1642,15 @@ function paintRealtimePnlFromSnapshot(data){
     const spotPx = data.options_index_px != null ? Number(data.options_index_px) : null;
     if (coinMode) {
         if (opt != null && !Number.isNaN(Number(opt))) {
-            // 币本位期权盈亏单位为币,勿与永续 U 混加成「xxU」
+            // options_unrealized_pnl 已是 USDT(后端按指数折算),勿再 × 指数
             if (perp != null && Math.abs(Number(perp)) >= 0.005) {
-                // 顶栏只显示合计 U:永续 U + 期权币盈亏×指数
-                let totalU = Number(perp);
-                if (Number.isFinite(spotPx) && spotPx > 0) {
-                    totalU += Number(opt) * spotPx;
-                }
+                const totalU = Number(perp) + Number(opt);
                 const uAbs = Math.abs(totalU).toFixed(2);
                 const uSign = totalU < 0 ? "-" : totalU > 0 ? "+" : "";
                 const text = `${uSign}${uAbs}U`;
                 lastRealtimePnl = Number(opt);
-                lastRealtimePnlUnit = underly;
-                lastRealtimePnlSpotPx = spotPx;
+                lastRealtimePnlUnit = "U";
+                lastRealtimePnlSpotPx = null;
                 document.querySelectorAll('[data-funds-field="realtime-pnl"]').forEach((pnlEl) => {
                     pnlEl.innerText = text;
                     pnlEl.classList.toggle("pnl-pos", totalU > 0);
@@ -1662,11 +1658,11 @@ function paintRealtimePnlFromSnapshot(data){
                 });
                 return;
             }
-            paintRealtimePnl(opt, underly, spotPx);
+            paintRealtimePnl(opt, "U");
             return;
         }
         // 期权盈亏拉取失败时保留上次有效值,避免顶栏闪成 0/—
-        if (lastRealtimePnl != null && (lastRealtimePnlUnit === "ETH" || lastRealtimePnlUnit === "BTC")) {
+        if (lastRealtimePnl != null && lastRealtimePnlUnit === "U") {
             return;
         }
     }