Align hedge-plan perp contract precision with exchange and show TP/SL USDT PnL.

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

lib/common/static/hedge_plan.js

@@ -177,6 +177,7 @@
     const acctLabel = d.account_label || "合约账户";
     const tag = $("hp-perp-acct-tag");
     if (tag) tag.textContent = acctLabel;
+    const amtPrec = d.amount_precision != null ? Number(d.amount_precision) : 4;
     const q = $("hp-perp-quote");
     if (q) {
       q.innerHTML =
@@ -186,7 +187,7 @@
         acctLabel +
         "可用 <strong>" +
         fmt(d.available_usdt, 2) +
-        "</strong> U<br/>标记 <strong>" +
+        "</strong> USDT<br/>标记 <strong>" +
         fmt(d.mark, 2) +
         "</strong> · 最新 " +
         fmt(d.last, 2) +
@@ -195,7 +196,15 @@
         " · 买一 " +
         fmt(d.bid, 2) +
         " · 面值 " +
-        fmt(d.contract_size, 4);
+        fmt(d.contract_size, 4) +
+        " · 张精度 " +
+        amtPrec +
+        " 位";
+    }
+    const contractsInput = $("hp-contracts");
+    if (contractsInput) {
+      const step = amtPrec <= 0 ? "1" : String(Math.pow(10, -amtPrec));
+      contractsInput.step = step;
     }
     const sz = $("hp-sizing-line");
     if (sz) {
@@ -206,25 +215,73 @@
           acctLabel +
           "):保证金 " +
           fmt(s.margin_capital, 2) +
-          "U × " +
+          " USDT × " +
           s.leverage +
           "x → 名义 " +
           fmt(s.notional_value, 2) +
-          "U · 建议约 " +
-          fmt(d.suggest_contracts, 4) +
-          " 张";
+          " USDT · 建议 " +
+          fmt(d.suggest_contracts, amtPrec) +
+          " 合约张(已按交易所精度)";
       } else {
         sz.textContent = "非全仓或不具备保证金数据时仅手动填张数;永期开仓需全仓.";
       }
     }
     const entry = $("hp-entry");
     if (entry && d.entry_ref && !entry.value) entry.value = d.entry_ref;
-    const contracts = $("hp-contracts");
-    if (contracts && d.suggest_contracts != null && !contracts.value) {
-      contracts.value = d.suggest_contracts;
+    if (contractsInput && d.suggest_contracts != null && !contractsInput.value) {
+      contractsInput.value = fmt(d.suggest_contracts, amtPrec);
     }
     const label = $("hp-opt-type-label");
     if (label) label.textContent = d.suggested_opt_type === "C" ? "Call" : "Put";
+    updatePerpPnlHint();
+  }
+
+  function updatePerpPnlHint() {
+    const el = $("hp-perp-pnl-line");
+    if (!el) return;
+    const entry = Number(($("hp-entry") && $("hp-entry").value) || NaN);
+    const tp = Number(($("hp-tp") && $("hp-tp").value) || NaN);
+    const sl = Number(($("hp-sl") && $("hp-sl").value) || NaN);
+    const contracts = Number(($("hp-contracts") && $("hp-contracts").value) || NaN);
+    const cs = Number((state.market && state.market.contract_size) || 0.01);
+    const dir = (($("hp-direction") && $("hp-direction").value) || "long").toLowerCase();
+    if (!(entry > 0) || !(contracts > 0) || !(cs > 0)) {
+      el.textContent = "填写开仓价与张数后,输入止盈/止损可看永续盈亏金额(USDT)";
+      return;
+    }
+    function pnlAt(exitPx) {
+      const coins = contracts * cs;
+      if (dir === "short") return (entry - exitPx) * coins;
+      return (exitPx - entry) * coins;
+    }
+    const parts = [];
+    if (tp > 0) {
+      const p = pnlAt(tp);
+      parts.push(
+        "止盈预期 <strong class=\"" +
+          (p >= 0 ? "hp-pnl-pos" : "hp-pnl-neg") +
+          "\">" +
+          (p >= 0 ? "+" : "") +
+          fmt(p, 2) +
+          " USDT</strong>"
+      );
+    } else {
+      parts.push("止盈预期 —");
+    }
+    if (sl > 0) {
+      const p = pnlAt(sl);
+      parts.push(
+        "止损预期 <strong class=\"" +
+          (p >= 0 ? "hp-pnl-pos" : "hp-pnl-neg") +
+          "\">" +
+          (p >= 0 ? "+" : "") +
+          fmt(p, 2) +
+          " USDT</strong>"
+      );
+    } else {
+      parts.push("止损预期 —");
+    }
+    el.innerHTML = parts.join(" · ");
   }
 
   function fillExpSelect(sel, chain) {
@@ -632,6 +689,10 @@
         });
       });
     }
+    ["hp-entry", "hp-tp", "hp-sl", "hp-contracts"].forEach(function (id) {
+      const el = $(id);
+      if (el) el.addEventListener("input", updatePerpPnlHint);
+    });
     if ($("hp-refresh"))
       $("hp-refresh").addEventListener("click", function () {
         void refreshAll();

lib/common/static/instance_theme.css

@@ -3212,6 +3212,28 @@ html[data-theme="light"] .opt-be-dist-down {
   font-weight: 500;
   margin-left: 4px;
 }
+.hedge-plan-page-wrap .hp-unit {
+  font-size: 0.66rem;
+  color: #8892b0;
+  font-weight: 500;
+  margin-right: 2px;
+}
+.hedge-plan-page-wrap .hp-unit-hint {
+  font-size: 0.68rem;
+  margin: 2px 0 6px;
+  line-height: 1.4;
+}
+.hedge-plan-page-wrap #hp-perp-pnl-line {
+  font-size: 0.74rem;
+  margin: 4px 0 6px;
+  line-height: 1.45;
+}
+.hedge-plan-page-wrap .hp-pnl-pos {
+  color: #7ee787;
+}
+.hedge-plan-page-wrap .hp-pnl-neg {
+  color: #ff8a8a;
+}
 .hedge-plan-page-wrap .form-row label,
 .hedge-plan-page-wrap .form-row select,
 .hedge-plan-page-wrap .form-row input,