feat: add multi-exchange order sync and position tracking

- Add order sync implementations for Hyperliquid, Bybit, OKX, Bitget, Aster
- Add position snapshot functionality for exchange position reset
- Update TraderOrder and TraderFill structures with exchange_type field
- Add exchange sync tests
- Update frontend charts components
- Remove deprecated position_sync.go

web/src/components/AdvancedChart.tsx

@@ -83,6 +83,8 @@ export function AdvancedChart({
   const [showIndicatorPanel, setShowIndicatorPanel] = useState(false)
   const [showOrderMarkers, setShowOrderMarkers] = useState(true) // 订单标记显示开关，默认显示
   const isInitialLoadRef = useRef(true) // 跟踪是否为初始加载
+  const [tooltipData, setTooltipData] = useState<any>(null)
+  const tooltipRef = useRef<HTMLDivElement>(null)
 
   // 指标配置
   const [indicators, setIndicators] = useState<IndicatorConfig[]>([
@@ -355,6 +357,31 @@ export function AdvancedChart({
 
     window.addEventListener('resize', handleResize)
 
+    // 监听鼠标移动，显示 OHLC 信息
+    chart.subscribeCrosshairMove((param) => {
+      if (!param.time || !param.point || !candlestickSeriesRef.current) {
+        setTooltipData(null)
+        return
+      }
+
+      const data = param.seriesData.get(candlestickSeriesRef.current as any)
+      if (!data) {
+        setTooltipData(null)
+        return
+      }
+
+      const candleData = data as any
+      setTooltipData({
+        time: param.time,
+        open: candleData.open,
+        high: candleData.high,
+        low: candleData.low,
+        close: candleData.close,
+        x: param.point.x,
+        y: param.point.y,
+      })
+    })
+
     return () => {
       window.removeEventListener('resize', handleResize)
       chart.remove()
@@ -741,6 +768,56 @@ export function AdvancedChart({
       <div style={{ position: 'relative' }}>
         <div ref={chartContainerRef} />
 
+        {/* OHLC Tooltip */}
+        {tooltipData && (
+          <div
+            ref={tooltipRef}
+            style={{
+              position: 'absolute',
+              left: '10px',
+              top: '10px',
+              padding: '8px 12px',
+              background: 'rgba(15, 18, 21, 0.95)',
+              border: '1px solid rgba(240, 185, 11, 0.3)',
+              borderRadius: '6px',
+              color: '#EAECEF',
+              fontSize: '12px',
+              fontFamily: 'monospace',
+              pointerEvents: 'none',
+              zIndex: 10,
+              backdropFilter: 'blur(10px)',
+              boxShadow: '0 4px 12px rgba(0, 0, 0, 0.5)',
+            }}
+          >
+            <div style={{ marginBottom: '6px', color: '#F0B90B', fontWeight: 'bold', fontSize: '11px' }}>
+              {new Date((tooltipData.time as number) * 1000).toLocaleString(language === 'zh' ? 'zh-CN' : 'en-US', {
+                month: 'short',
+                day: 'numeric',
+                hour: '2-digit',
+                minute: '2-digit',
+              })}
+            </div>
+            <div style={{ display: 'grid', gridTemplateColumns: 'auto 1fr', gap: '4px 12px', fontSize: '11px' }}>
+              <span style={{ color: '#848E9C' }}>O:</span>
+              <span style={{ color: '#EAECEF', fontWeight: '500' }}>{tooltipData.open?.toFixed(2)}</span>
+
+              <span style={{ color: '#848E9C' }}>H:</span>
+              <span style={{ color: '#0ECB81', fontWeight: '500' }}>{tooltipData.high?.toFixed(2)}</span>
+
+              <span style={{ color: '#848E9C' }}>L:</span>
+              <span style={{ color: '#F6465D', fontWeight: '500' }}>{tooltipData.low?.toFixed(2)}</span>
+
+              <span style={{ color: '#848E9C' }}>C:</span>
+              <span style={{
+                color: tooltipData.close >= tooltipData.open ? '#0ECB81' : '#F6465D',
+                fontWeight: 'bold'
+              }}>
+                {tooltipData.close?.toFixed(2)}
+              </span>
+            </div>
+          </div>
+        )}
+
         {/* NOFX 水印 */}
         <div
           style={{