Add weekend open skip, expiry force-close, and Chinese trade labels.

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

frontend/src/pages/Settings.tsx

@@ -27,6 +27,7 @@ export default function SettingsPage() {
   const [netTarget, setNetTarget] = useState(15);
   const [premMult, setPremMult] = useState(1);
   const [rest, setRest] = useState(300);
+  const [skipWeekends, setSkipWeekends] = useState(true);
   const [leverage, setLeverage] = useState(3);
   const [minHours, setMinHours] = useState(12);
   const [minOptLev, setMinOptLev] = useState(100);
@@ -43,6 +44,7 @@ export default function SettingsPage() {
         setNetTarget(s.net_profit_target ?? 15);
         setPremMult(s.premium_exit_multiple ?? 1);
         setRest(s.rest_seconds);
+        setSkipWeekends(s.skip_weekends !== false);
         setLeverage(s.leverage ?? 3);
         setMinHours(s.min_option_hours ?? 12);
         setMinOptLev(s.min_option_leverage ?? 100);
@@ -97,6 +99,7 @@ export default function SettingsPage() {
           net_profit_target: netTarget,
           premium_exit_multiple: premMult,
           rest_seconds: rest,
+          skip_weekends: skipWeekends,
           leverage,
           min_option_hours: minHours,
           min_option_leverage: minOptLev,
@@ -134,7 +137,7 @@ export default function SettingsPage() {
       {tab === "strategy" ? (
         <div className="card settings-card">
           <p className="settings-lead">
-            无开仓时间窗；期权按剩余时长选到期 → 平值 → 校验杠杆；出场可选固定金额或权利金倍数。
+            无开仓时间窗；可选周六日跳过开仓；期权按剩余时长选到期 → 平值 → 校验杠杆；出场可选固定金额或权利金倍数。
           </p>
           {stratOk ? <div className="settings-ok">{stratOk}</div> : null}
           {err && tab === "strategy" ? <div className="err">{err}</div> : null}
@@ -282,6 +285,18 @@ export default function SettingsPage() {
                     onChange={(e) => setRest(Number(e.target.value))}
                   />
                 </div>
+                <div className="field">
+                  <label htmlFor="skipWe">周六日跳过开仓（上海时区）</label>
+                  <select
+                    id="skipWe"
+                    className="mono"
+                    value={skipWeekends ? "1" : "0"}
+                    onChange={(e) => setSkipWeekends(e.target.value === "1")}
+                  >
+                    <option value="1">开启（推荐）</option>
+                    <option value="0">关闭</option>
+                  </select>
+                </div>
                 <div className="field">
                   <label htmlFor="fee">手续费率</label>
                   <input