fix：修复标注问题

app/static/futures_analysis.js

@@ -1426,6 +1426,17 @@ function trRenderDetailKline(data, pair) {
         }
     });
     
+    // 计算全局价格范围，用于确定标记偏移量
+    let globalLow = Infinity, globalHigh = -Infinity;
+    candles.forEach(c => {
+        const lo = parseFloat(c[3]);
+        const hi = parseFloat(c[4]);
+        if (lo < globalLow) globalLow = lo;
+        if (hi > globalHigh) globalHigh = hi;
+    });
+    const priceRange = globalHigh - globalLow;
+    const markerOffset = priceRange * 0.06; // 标记偏移量：价格范围的6%
+
     // 生成标记数据
     let minMarkerIdx = Infinity;
     let maxMarkerIdx = -Infinity;
@@ -1435,8 +1446,8 @@ function trRenderDetailKline(data, pair) {
         const candle = candles[dateIdx];
         const price = parseFloat(m.price);
         const low = parseFloat(candle[3]);
-        const high = parseFloat(candle[4]);
-        const markerPrice = Math.max(low, Math.min(high, price));
+        // 买标记放在K线下方，远离柱体
+        const markerPrice = low - markerOffset;
         
         buyMarkers.push({
             name: `买${m.offset || ''}`,
@@ -1453,9 +1464,9 @@ function trRenderDetailKline(data, pair) {
         const dateIdx = parseInt(idx);
         const candle = candles[dateIdx];
         const price = parseFloat(m.price);
-        const low = parseFloat(candle[3]);
         const high = parseFloat(candle[4]);
-        const markerPrice = Math.max(low, Math.min(high, price));
+        // 卖标记放在K线上方，远离柱体
+        const markerPrice = high + markerOffset;
         
         sellMarkers.push({
             name: `卖${m.offset || ''}`,
@@ -1564,7 +1575,7 @@ function trRenderDetailKline(data, pair) {
                     symbol: 'triangle',
                     symbolSize: 12,
                     data: buyMarkers,
-                    label: { show: true, formatter: '{b}', fontSize: 10, color: '#10b981' },
+                    label: { show: true, formatter: '{b}', fontSize: 10, color: '#10b981', position: 'bottom', distance: 5 },
                 },
             },
             {
@@ -1581,7 +1592,7 @@ function trRenderDetailKline(data, pair) {
                     symbolSize: 12,
                     symbolRotate: 180,
                     data: sellMarkers,
-                    label: { show: true, formatter: '{b}', fontSize: 10, color: '#ef4444' },
+                    label: { show: true, formatter: '{b}', fontSize: 10, color: '#ef4444', position: 'top', distance: 5 },
                 },
             },
             {