Hub market: add option expiry Friday yellow dashed splits.

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

manual_trading_hub/static/chart_draw.js

@@ -68,6 +68,7 @@
   let unsubClick = null;
   let mainBound = false;
   let tradingDaySplitEnabled = false;
+  let optionExpirySplitEnabled = false;
   const BJ_OFFSET_SEC = 8 * 60 * 60;
 
   function uid() {
@@ -409,6 +410,53 @@
     ctx.restore();
   }
 
+  /** OKX 期权到期:每周五 08:00 UTC(=北京 16:00) */
+  function collectOptionExpiryBoundaries(candles) {
+    if (!candles.length) return [];
+    const minT = Number(candles[0].time);
+    const maxT = Number(candles[candles.length - 1].time);
+    if (!Number.isFinite(minT) || !Number.isFinite(maxT)) return [];
+    const out = [];
+    const cur = new Date(minT * 1000);
+    cur.setUTCHours(0, 0, 0, 0);
+    cur.setUTCDate(cur.getUTCDate() - 1);
+    const endSec = maxT + 2 * 86400;
+    while (cur.getTime() / 1000 <= endSec) {
+      if (cur.getUTCDay() === 5) {
+        const boundary = Math.floor(
+          Date.UTC(cur.getUTCFullYear(), cur.getUTCMonth(), cur.getUTCDate(), 8, 0, 0) / 1000
+        );
+        if (boundary >= minT - 3600 && boundary <= maxT + 3600) {
+          if (!out.length || out[out.length - 1] !== boundary) out.push(boundary);
+        }
+      }
+      cur.setUTCDate(cur.getUTCDate() + 1);
+    }
+    return out;
+  }
+
+  function drawOptionExpirySplits(ctx, w, h) {
+    if (!optionExpirySplitEnabled || !chart) return;
+    const candles = getCandles();
+    if (!candles.length) return;
+    const boundaries = collectOptionExpiryBoundaries(candles);
+    if (!boundaries.length) return;
+    ctx.save();
+    ctx.strokeStyle = "#eab308";
+    ctx.lineWidth = 1;
+    ctx.setLineDash([5, 4]);
+    boundaries.forEach(function (t) {
+      const x = timeToX(t);
+      if (x == null || !Number.isFinite(x) || x < -2 || x > w + 2) return;
+      ctx.beginPath();
+      ctx.moveTo(x, 0);
+      ctx.lineTo(x, h);
+      ctx.stroke();
+    });
+    ctx.setLineDash([]);
+    ctx.restore();
+  }
+
   function drawRect(ctx, x1, y1, x2, y2, selected) {
     if (x1 == null || y1 == null || x2 == null || y2 == null) return;
     const l = Math.min(x1, x2);
@@ -743,6 +791,7 @@
     const h = hostEl.clientHeight;
     ctx.clearRect(0, 0, w, h);
     drawTradingDaySplits(ctx, w, h);
+    drawOptionExpirySplits(ctx, w, h);
     drawings.forEach(function (d) {
       if (d.hidden) ctx.globalAlpha = 0.14;
       renderDrawing(ctx, d, w, h, d.id === selectedId);
@@ -1451,10 +1500,16 @@
     scheduleRedraw();
   }
 
+  function setOptionExpirySplit(enabled) {
+    optionExpirySplitEnabled = !!enabled;
+    scheduleRedraw();
+  }
+
   window.HubChartDraw = {
     attach: attach,
     setViewKey: setViewKey,
     setTradingDaySplit: setTradingDaySplit,
+    setOptionExpirySplit: setOptionExpirySplit,
     resize: scheduleRedraw,
     redraw: scheduleRedraw,
     destroy: destroy,