Show trade open/close times and hold period by target exit.

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

frontend/src/pages/Trades.tsx

@@ -27,6 +27,10 @@ type Group = {
   close_reason: string | null;
   open_at_ms: number | null;
   close_at_ms: number | null;
+  hold_open_at_ms?: number | null;
+  hold_close_at_ms?: number | null;
+  hold_ms?: number | null;
+  hold_basis?: string | null;
   pnl_summary?: PnlSummary;
 };
 
@@ -50,9 +54,37 @@ function fmt(n: number | null | undefined, digits = 2) {
   return Number(n).toFixed(digits);
 }
 
+/** 上海时区开/平仓时间 */
+function fmtTime(ms: number | null | undefined) {
+  if (ms == null || !Number.isFinite(ms) || ms <= 0) return "—";
+  return new Date(ms).toLocaleString("zh-CN", {
+    timeZone: "Asia/Shanghai",
+    hour12: false,
+    year: "numeric",
+    month: "2-digit",
+    day: "2-digit",
+    hour: "2-digit",
+    minute: "2-digit",
+    second: "2-digit",
+  });
+}
+
+/** 持仓周期：x时y分z秒 */
+function fmtHold(ms: number | null | undefined) {
+  if (ms == null || !Number.isFinite(ms) || ms < 0) return "—";
+  const totalSec = Math.floor(ms / 1000);
+  const h = Math.floor(totalSec / 3600);
+  const m = Math.floor((totalSec % 3600) / 60);
+  const s = totalSec % 60;
+  if (h > 0) return `${h}时${m}分${s}秒`;
+  if (m > 0) return `${m}分${s}秒`;
+  return `${s}秒`;
+}
+
 export default function TradesPage() {
   const [groups, setGroups] = useState<Group[]>([]);
   const [selected, setSelected] = useState<string | null>(null);
+  const [selectedGroup, setSelectedGroup] = useState<Group | null>(null);
   const [fills, setFills] = useState<Fill[]>([]);
   const [summary, setSummary] = useState<PnlSummary | null>(null);
   const [err, setErr] = useState("");
@@ -66,12 +98,16 @@ export default function TradesPage() {
   async function openGroup(id: string) {
     setSelected(id);
     setSummary(null);
+    setSelectedGroup(null);
     try {
-      const r = await apiFetch<{ fills: Fill[]; pnl_summary: PnlSummary }>(
-        `/api/trades/groups/${id}`
-      );
+      const r = await apiFetch<{
+        group: Group;
+        fills: Fill[];
+        pnl_summary: PnlSummary;
+      }>(`/api/trades/groups/${id}`);
       setFills(r.fills);
       setSummary(r.pnl_summary);
+      setSelectedGroup(r.group);
     } catch (e) {
       setErr(e instanceof Error ? e.message : String(e));
     }
@@ -80,6 +116,9 @@ export default function TradesPage() {
   return (
     <div className="trades-page">
       <h2 style={{ marginTop: 0 }}>交易记录</h2>
+      <p className="trade-hold-note">
+        持仓周期按目标平仓计时；净盈利达标且只平永续时，以永续平仓时间为准（不含期权残留至到期）。
+      </p>
       {err ? <div className="err">{err}</div> : null}
       <div className="card trade-list" style={{ marginBottom: 12 }}>
         {groups.length === 0 ? (
@@ -88,6 +127,8 @@ export default function TradesPage() {
           groups.map((g) => {
             const listPnl =
               g.net_pnl ?? g.pnl_summary?.net_pnl ?? g.realized_pnl;
+            const openMs = g.hold_open_at_ms ?? g.open_at_ms;
+            const closeMs = g.hold_close_at_ms ?? g.close_at_ms;
             return (
               <button
                 key={g.group_id}
@@ -101,6 +142,10 @@ export default function TradesPage() {
                     {statusZh(g.status)} ·{" "}
                     {positionSidesZh(g.perp_side, g.option_side)}
                   </span>
+                  <span className="trade-row-times">
+                    开 {fmtTime(openMs)} · 平 {fmtTime(closeMs)} · 周期{" "}
+                    {fmtHold(g.hold_ms)}
+                  </span>
                 </div>
                 <div className={`trade-row-pnl mono ${pnlClass(listPnl)}`}>
                   <span>净盈亏 {fmt(listPnl)}</span>
@@ -118,6 +163,31 @@ export default function TradesPage() {
       {selected ? (
         <div className="card trade-detail">
           <h3 style={{ marginTop: 0 }}>{selected} 成交明细</h3>
+          {selectedGroup ? (
+            <div className="trade-hold-summary">
+              <div className="kv">
+                <span>开仓时间</span>
+                <span className="mono">
+                  {fmtTime(selectedGroup.hold_open_at_ms ?? selectedGroup.open_at_ms)}
+                </span>
+              </div>
+              <div className="kv">
+                <span>平仓时间</span>
+                <span className="mono">
+                  {fmtTime(
+                    selectedGroup.hold_close_at_ms ?? selectedGroup.close_at_ms,
+                  )}
+                  {selectedGroup.hold_basis === "perp" ? (
+                    <span className="trade-hold-basis">（永续）</span>
+                  ) : null}
+                </span>
+              </div>
+              <div className="kv">
+                <span>持仓周期</span>
+                <span className="mono">{fmtHold(selectedGroup.hold_ms)}</span>
+              </div>
+            </div>
+          ) : null}
           <p style={{ color: "var(--muted)", fontSize: 13, marginTop: 0 }}>
             成交价为成交均价（未预先扣费）；手续费单独列出。净盈亏 = 期权盈亏 + 永续盈亏 −
             全部手续费。