fix: adaptive price precision for meme coins

- Add adaptivePriceRound() in store/position.go for database storage
- Update position_builder.go to use adaptive precision for entry/exit prices
- Add Gate to OrderSync skip list in auto_trader.go
- Add debug logging in gate/order_sync.go for price parsing issues
- Create web/src/utils/format.ts with formatPrice() for frontend display
- Update TraderDashboardPage.tsx and PositionHistory.tsx to use adaptive formatting

Fixes issue where meme coin prices (e.g. 0.000000166) displayed as 0.0000

trader/auto_trader.go

@@ -1982,7 +1982,7 @@ func (at *AutoTrader) recordAndConfirmOrder(orderResult map[string]interface{},
 	// Exchanges with OrderSync: Skip immediate order recording, let OrderSync handle it
 	// This ensures accurate data from GetTrades API and avoids duplicate records
 	switch at.exchange {
-	case "binance", "lighter", "hyperliquid", "bybit", "okx", "bitget", "aster", "kucoin":
+	case "binance", "lighter", "hyperliquid", "bybit", "okx", "bitget", "aster", "kucoin", "gate":
 		logger.Infof("  📝 Order submitted (id: %s), will be synced by OrderSync", orderID)
 		return
 	}