Show OKX option Delta on hedge plan strike picker.

Surface ticker delta (gamma in tooltip) in the chain table and selected premium line for easier ITM selection.

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

lib/common/static/hedge_plan.js

@@ -894,6 +894,14 @@
   }
 
   /** CoinOX 币本位:卖一为币报价 → 杠杆≈1÷卖一(与期权页一致). */
+  function fmtDelta(v) {
+    const n = Number(v);
+    if (v == null || Number.isNaN(n)) return "—";
+    // Call 多为正,Put 多为负;保留两位便于对比实虚值
+    const s = fmt(n, 2);
+    return n > 0 ? "+" + s : s;
+  }
+
   function calcIndexAskLeverage(ask) {
     const a = Number(ask);
     if (!(a > 0)) return "—";
@@ -2262,7 +2270,7 @@
     const want = optTypeForDirection(getDirection());
     const exp = currentExp("hp-exp-select");
     const prevInst = state.selected && state.selected.inst_id;
-    const cols = isOptionPrimary() ? 7 : 6;
+    const cols = isOptionPrimary() ? 8 : 7;
     tbody.innerHTML = "";
     if (!exp) {
       tbody.innerHTML = '<tr><td colspan="' + cols + '" class="muted">请选择到期日</td></tr>';
@@ -2302,13 +2310,21 @@
       tr.className = "opt-strike-row" + (c.moneyness ? " opt-row-" + c.moneyness : "");
       if (prevInst && c.inst_id === prevInst) tr.classList.add("opt-row-selected");
       tr.setAttribute("data-inst", c.inst_id);
+      const deltaCell =
+        '<td class="opt-chain-delta" title="交易所 Delta' +
+        (c.gamma != null ? " · γ=" + fmt(c.gamma, 4) : "") +
+        '">' +
+        fmtDelta(c.delta) +
+        "</td>";
       if (isOptionPrimary()) {
         tr.innerHTML =
           "<td>" +
           c.strike +
           "</td><td>" +
           moneynessBadge(c) +
-          "</td><td><code class=\"opt-inst-code\">" +
+          "</td>" +
+          deltaCell +
+          '<td><code class="opt-inst-code">' +
           (c.inst_id || "") +
           '</code></td><td class="opt-px-sz">' +
           fmtPxSz(c.ask, c.ask_sz, c.ask_estimated, c.tick_sz) +
@@ -2327,7 +2343,9 @@
           c.strike +
           "</td><td>" +
           moneynessBadge(c) +
-          '</td><td class="opt-chain-lev" title="指数÷卖一">' +
+          "</td>" +
+          deltaCell +
+          '<td class="opt-chain-lev" title="指数÷卖一">' +
           calcIndexAskLeverage(c.ask) +
           '</td><td class="opt-px-sz">' +
           fmtPxSz(c.ask, c.ask_sz, c.ask_estimated, c.tick_sz) +
@@ -2366,6 +2384,7 @@
     // U 以期权标的指数为准(买 BTC/ETH 开期权);跨币不可用永续 ETH 价
     const buyPx = Number(optionIndexPx() || 0);
     const premU = buyPx > 0 ? prem * buyPx : null;
+    const dlt = state.selected.delta;
     line.textContent =
       "权利金 ≈ " +
       fmt(prem, 4) +
@@ -2374,7 +2393,8 @@
       (premU != null ? " / " + fmt(premU, 2) + " U" : "") +
       " · 卖一 " +
       fmt(ask, 4) +
-      (buyPx > 0 ? " · 买" + optionCoin() + "参考 " + fmt(buyPx, 2) : "");
+      (buyPx > 0 ? " · 买" + optionCoin() + "参考 " + fmt(buyPx, 2) : "") +
+      (dlt != null && !Number.isNaN(Number(dlt)) ? " · Δ " + fmtDelta(dlt) : "");
   }
 
   function buildStraddleRows(contracts) {