Fix hub market chart live K-line updates in manual follow mode.

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

manual_trading_hub/static/chart.js

@@ -2486,6 +2486,7 @@
     const aligned = alignCandlesToTick(incoming);
     const prevLen = lastCandles.length;
     const oldestTime = prevLen ? lastCandles[0].time : null;
+    const prevLastTime = prevLen ? lastCandles[prevLen - 1].time : null;
     const merged = mergeCandles(lastCandles, aligned, { prepend: false });
     if (
       prevLen > 0 &&
@@ -2495,16 +2496,21 @@
     ) {
       return false;
     }
-    aligned.forEach(function (bar) {
+    let patchStart = 0;
-      candleSeries.update(bar);
+    if (prevLastTime != null) {
-      volumeSeries.update(buildVolumeBar(bar));
+      patchStart = merged.findIndex(function (b) {
+        return b.time >= prevLastTime;
       });
-    if (merged.length > prevLen) {
+      if (patchStart < 0) return false;
-      for (let i = prevLen; i < merged.length; i++) {
+    }
+    try {
+      for (let i = patchStart; i < merged.length; i++) {
         const bar = merged[i];
         candleSeries.update(bar);
         volumeSeries.update(buildVolumeBar(bar));
       }
+    } catch (_) {
+      return false;
     }
     lastCandles = merged;
     indexCandles(lastCandles);
@@ -2639,7 +2645,15 @@
       }
     }
     const aligned = alignCandlesToTick(incoming);
-    if (!autoFollow && applyTailCandlePatch(aligned)) {
+    let tailPatched = false;
+    if (!autoFollow) {
+      try {
+        tailPatched = applyTailCandlePatch(aligned);
+      } catch (_) {
+        tailPatched = false;
+      }
+    }
+    if (!autoFollow && tailPatched) {
       /* 手动模式：增量 update，不触碰时间轴 */
     } else {
       const merged = mergeCandles(lastCandles, aligned, { prepend: false });
@@ -2862,7 +2876,12 @@
     }
     if (posContext) updateLivePosPnl();
     const ver = Number(st.chart_version) || 0;
-    if (ver && ver !== localChartVersion) localChartVersion = ver;
+    if (ver && ver !== localChartVersion) {
+      localChartVersion = ver;
+      if (lastCandles.length && vKey === lastViewKey && !chartDataLoading) {
+        void refreshChartTail();
+      }
+    }
   }
 
   function connectChartStream() {

manual_trading_hub/static/index.html

@@ -1046,7 +1046,7 @@
   <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_draw.js?v=20260609-market-day-split"></script>
-  <script src="/assets/chart.js?v=20260614-market-live"></script>
+  <script src="/assets/chart.js?v=20260626-market-tail-patch"></script>
   <script src="/assets/plan.js?v=20260614-plan-refresh"></script>
   <script src="/assets/calculator.js?v=3"></script>
   <script src="/assets/archive.js?v=20260612-archive-ai-chat"></script>