修复行情区 barSpacing API 兼容（Lightweight Charts v4）

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

manual_trading_hub/static/chart.js

@@ -196,12 +196,38 @@
     if (elBarCountdown) elBarCountdown.textContent = "距收盘 " + cd;
   }
 
+  function getBarSpacing(ts) {
+    if (!ts) return 6;
+    try {
+      if (typeof ts.barSpacing === "function") {
+        const v = ts.barSpacing();
+        if (Number.isFinite(v) && v > 0) return v;
+      }
+    } catch (e) {}
+    try {
+      if (typeof ts.options === "function") {
+        const opts = ts.options();
+        const v = opts && opts.barSpacing;
+        if (Number.isFinite(v) && v > 0) return v;
+      }
+    } catch (e) {}
+    try {
+      const x0 = ts.logicalToCoordinate(0);
+      const x1 = ts.logicalToCoordinate(1);
+      if (x0 != null && x1 != null) {
+        const d = Math.abs(x1 - x0);
+        if (Number.isFinite(d) && d > 0) return d;
+      }
+    } catch (e) {}
+    return 6;
+  }
+
   function priceTagX() {
     if (!chart || !lastCandles.length) return null;
     const bar = latestCandle();
     if (!bar) return null;
     const ts = chart.timeScale();
-    const spacing = ts.barSpacing();
+    const spacing = getBarSpacing(ts);
     const hostW = chartHost.clientWidth || 0;
     let x = null;
     try {
@@ -227,6 +253,7 @@
 
   function updatePriceTag() {
     if (!elPriceTag || !candleSeries || !chart) return;
+    try {
       tickLiveClock();
       const bar = latestCandle();
       if (!bar || bar.close == null) {
@@ -255,6 +282,10 @@
       elPriceTag.style.left = x + "px";
       elPriceTag.style.top = y + "px";
       if (elPriceTagValue) elPriceTagValue.textContent = fmtPrice(bar.close);
+    } catch (e) {
+      elPriceTag.classList.add("hidden");
+      elPriceTag.setAttribute("aria-hidden", "true");
+    }
   }
 
   function startPriceTagTimer() {

manual_trading_hub/static/index.html

@@ -190,7 +190,7 @@
 
   <div id="toast"></div>
   <script src="https://unpkg.com/lightweight-charts@4.2.0/dist/lightweight-charts.standalone.production.js"></script>
-  <script src="/assets/chart.js?v=20260528-hub-market9"></script>
-  <script src="/assets/app.js?v=20260528-hub-market9"></script>
+  <script src="/assets/chart.js?v=20260528-hub-market10"></script>
+  <script src="/assets/app.js?v=20260528-hub-market10"></script>
 </body>
 </html>