feat: add AI grid trading and market regime classification

- Add GridTrader interface with PlaceLimitOrder, CancelOrder, GetOrderBook
- Implement GridTrader for all exchanges (Binance, Bybit, OKX, Bitget, Hyperliquid, Aster, Lighter)
- Add grid engine with ATR-based boundary calculation and fund distribution
- Add market regime classification documents (Chinese/English)
- Add GridConfigEditor component for frontend configuration

web/src/pages/TraderDashboardPage.tsx

@@ -151,6 +151,13 @@ export function TraderDashboardPage({
         setPositionsCurrentPage(1)
     }, [selectedTraderId, positionsPageSize])
 
+    // Auto-set chart symbol for grid trading
+    useEffect(() => {
+        if (status?.strategy_type === 'grid_trading' && status?.grid_symbol) {
+            setSelectedChartSymbol(status.grid_symbol)
+        }
+    }, [status?.strategy_type, status?.grid_symbol])
+
     // Get current exchange info for perp-dex wallet display
     const currentExchange = exchanges?.find(
         (e) => e.id === selectedTrader?.exchange_id