feat: add timed position close (1h/2h/4h) for key levels and live orders

Program monitors open positions and market-closes at deadline; UI shows label and countdown on instance and hub boards.

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

static/instance_theme.css

@@ -341,6 +341,17 @@ html[data-theme="light"] .pos-meta-item::after {
   color: #b8c8d8 !important;
 }
 
+.pos-time-close-meta {
+  color: #8fc8ff;
+}
+.pos-time-close-meta .pos-time-close-cd {
+  font-variant-numeric: tabular-nums;
+  letter-spacing: 0.02em;
+}
+.key-time-close-wrap.is-disabled select,
+.order-time-close-wrap.is-disabled select {
+  opacity: 0.55;
+}
 html[data-theme="light"] .pos-meta-on {
   color: #006e9a !important;
 }

static/time_close_ui.js

@@ -0,0 +1,93 @@
+/**
+ * 时间平仓：表单开关 + 持仓倒计时。
+ */
+(function (global) {
+  "use strict";
+
+  function pad2(n) {
+    return n < 10 ? "0" + n : String(n);
+  }
+
+  function formatCountdown(sec) {
+    const s = Math.max(0, parseInt(sec, 10) || 0);
+    const h = Math.floor(s / 3600);
+    const m = Math.floor((s % 3600) / 60);
+    const r = s % 60;
+    return pad2(h) + ":" + pad2(m) + ":" + pad2(r);
+  }
+
+  function bindTimeCloseForm(checkboxId, selectId, wrapId) {
+    const cb = document.getElementById(checkboxId);
+    const sel = document.getElementById(selectId);
+    const wrap = wrapId ? document.getElementById(wrapId) : null;
+    if (!cb || !sel) return;
+    function sync() {
+      const on = !!cb.checked;
+      sel.disabled = !on;
+      if (wrap) wrap.classList.toggle("is-disabled", !on);
+    }
+    cb.addEventListener("change", sync);
+    sync();
+  }
+
+  function paintOrderTimeClose(order) {
+    if (!order || order.id == null) return;
+    const wrap = document.getElementById("order-time-close-wrap-" + order.id);
+    const cd = document.getElementById("order-time-close-cd-" + order.id);
+    if (!wrap || !cd) return;
+    const enabled = !!(order.time_close_enabled || order.time_close_at_ms);
+    if (!enabled) {
+      wrap.style.display = "none";
+      return;
+    }
+    wrap.style.display = "";
+    const hours = order.time_close_hours;
+    const label = order.time_close_label || (hours ? "时间平仓 " + hours + "h" : "时间平仓");
+    const labelEl = wrap.querySelector(".pos-time-close-label");
+    if (labelEl) labelEl.textContent = label;
+    let rem =
+      order.time_close_remaining_sec != null
+        ? Number(order.time_close_remaining_sec)
+        : null;
+    if ((rem == null || !Number.isFinite(rem)) && order.time_close_at_ms) {
+      rem = Math.max(0, Math.floor((Number(order.time_close_at_ms) - Date.now()) / 1000));
+    }
+    cd.textContent = Number.isFinite(rem) ? formatCountdown(rem) : "--:--:--";
+    wrap.dataset.closeAtMs = order.time_close_at_ms ? String(order.time_close_at_ms) : "";
+  }
+
+  function tickLocalCountdowns() {
+    document.querySelectorAll("[data-close-at-ms]").forEach(function (wrap) {
+      const closeAtRaw = wrap.dataset.closeAtMs || wrap.getAttribute("data-close-at-ms") || "";
+      const cd = wrap.querySelector(".pos-time-close-cd");
+      if (!cd) return;
+      const closeAt = Number(closeAtRaw);
+      if (!closeAt) return;
+      const rem = Math.max(0, Math.floor((closeAt - Date.now()) / 1000));
+      cd.textContent = formatCountdown(rem);
+    });
+  }
+
+  function paintOrders(orders) {
+    (orders || []).forEach(paintOrderTimeClose);
+  }
+
+  function syncKeyTimeCloseVisibility(show) {
+    const wrap = document.getElementById("key-time-close-wrap");
+    if (!wrap) return;
+    wrap.style.display = show ? "inline-flex" : "none";
+  }
+
+  global.TimeCloseUI = {
+    bindTimeCloseForm: bindTimeCloseForm,
+    paintOrderTimeClose: paintOrderTimeClose,
+    paintOrders: paintOrders,
+    tickLocalCountdowns: tickLocalCountdowns,
+    syncKeyTimeCloseVisibility: syncKeyTimeCloseVisibility,
+    formatCountdown: formatCountdown,
+  };
+
+  if (!global.__timeCloseCountdownTimer) {
+    global.__timeCloseCountdownTimer = setInterval(tickLocalCountdowns, 1000);
+  }
+})(typeof window !== "undefined" ? window : globalThis);