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

store/store.go

@@ -28,6 +28,7 @@ type Store struct {
 	strategy *StrategyStore
 	equity   *EquityStore
 	order    *OrderStore
+	grid     *GridStore
 
 	mu sync.RWMutex
 }
@@ -156,6 +157,9 @@ func (s *Store) initTables() error {
 	if err := s.Order().InitTables(); err != nil {
 		return fmt.Errorf("failed to initialize order tables: %w", err)
 	}
+	if err := s.Grid().InitTables(); err != nil {
+		return fmt.Errorf("failed to initialize grid tables: %w", err)
+	}
 	return nil
 }
 
@@ -279,6 +283,16 @@ func (s *Store) Order() *OrderStore {
 	return s.order
 }
 
+// Grid gets grid trading storage
+func (s *Store) Grid() *GridStore {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	if s.grid == nil {
+		s.grid = NewGridStore(s.gdb)
+	}
+	return s.grid
+}
+
 // Close closes database connection
 func (s *Store) Close() error {
 	if s.driver != nil {