fix(web): 开关缠论元素保留视窗；分周期 Trend 涨跌配色

本地重绘统一冻结视窗；次/次次周期 Trend 上涨下跌使用独立颜色。

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

web/static/js/app/chart_tv_finalize.js

@@ -66,7 +66,19 @@ function chartTvFinalize(ctx) {
         const allChartsNow = [mainChart, volumeChart, atrChart]
             .concat(showMacd && macdChart ? [macdChart] : [])
             .concat(showMacd && chanMacdChart ? [chanMacdChart] : []);
-        if (!hasPendingRestoreView || !pendingView) {
+        const restoreOpts = function () {
+            const firstT = candles && candles.length ? candles[0].time : null;
+            const lastT = candles && candles.length ? candles[candles.length - 1].time : null;
+            return {
+                firstBarTime: firstT,
+                lastBarTime: lastT,
+                oldBarCount: window._preserveViewBarCount || 0,
+                newBarCount: totalBars
+            };
+        };
+        if (hasPendingRestoreView && pendingView) {
+            restoreChartViewState(allChartsNow, pendingView, restoreOpts());
+        } else {
             // 显示最近 200 根K线而非全部挤压（避免K线过多时重叠）
             if (totalBars > visibleBarsCount) {
                 const rangeFrom = totalBars - visibleBarsCount;
@@ -77,9 +89,21 @@ function chartTvFinalize(ctx) {
             }
         }
         
-        // 立即同步其他图表到主图表的范围（无 pending 时）
+        // 立即同步其他图表到主图表的范围
         setTimeout(() => {
             if (pendingView) {
+                restoreChartViewState(allChartsNow, pendingView, restoreOpts());
+                const logRange = mainChart.timeScale().getVisibleLogicalRange();
+                if (logRange) {
+                    volumeChart.timeScale().setVisibleLogicalRange(logRange);
+                    atrChart.timeScale().setVisibleLogicalRange(logRange);
+                    if (showMacd && macdChart) {
+                        macdChart.timeScale().setVisibleLogicalRange(logRange);
+                    }
+                    if (showMacd && chanMacdChart) {
+                        chanMacdChart.timeScale().setVisibleLogicalRange(logRange);
+                    }
+                }
                 return;
             }
             const logRange = mainChart.timeScale().getVisibleLogicalRange();