Feature/okx trading (#1177)

* feat: add OKX exchange trading support
- Add OKX trader client with full trading API integration
- Support API Key, Secret Key, and Passphrase authentication
- Add OKX icon and frontend configuration modal
- Update exchange store and types for OKX fields
* fix: add passphrase column migration and fix exchange type mapping
* fix: show OKX input fields in exchange config modal
* fix: ensure all supported exchanges exist for user when listing
* fix: simplify exchange type check condition for OKX
* debug: add visible debug info for exchange id
* fix: remove debug info from exchange config modal
* fix: add OKX to exchange type condition in AITradersPage
* feat: complete OKX trading support and fix exchange config issues
- Add LIGHTER exchange UI support in AITradersPage
- Add passphrase field to UpdateExchangeConfigRequest type
- Fix OKX HTTP client to bypass proxy (disable system proxy)
- Auto-fetch initial balance from exchange when not set
- Support multiple balance field names for different exchanges
- Add detailed error messages when trader fails to load
- Add lighter_api_key_private_key field to exchange store

trader/auto_trader.go

@@ -22,7 +22,7 @@ type AutoTraderConfig struct {
 	AIModel string // AI模型: "qwen" 或 "deepseek"
 
 	// 交易平台选择
-	Exchange string // "binance", "bybit", "hyperliquid", "aster" 或 "lighter"
+	Exchange string // "binance", "bybit", "okx", "hyperliquid", "aster" 或 "lighter"
 
 	// 币安API配置
 	BinanceAPIKey    string
@@ -32,6 +32,11 @@ type AutoTraderConfig struct {
 	BybitAPIKey    string
 	BybitSecretKey string
 
+	// OKX API配置
+	OKXAPIKey    string
+	OKXSecretKey string
+	OKXPassphrase string
+
 	// Hyperliquid配置
 	HyperliquidPrivateKey string
 	HyperliquidWalletAddr string
@@ -174,6 +179,9 @@ func NewAutoTrader(config AutoTraderConfig, st *store.Store, userID string) (*Au
 	case "bybit":
 		logger.Infof("🏦 [%s] 使用Bybit合约交易", config.Name)
 		trader = NewBybitTrader(config.BybitAPIKey, config.BybitSecretKey)
+	case "okx":
+		logger.Infof("🏦 [%s] 使用OKX合约交易", config.Name)
+		trader = NewOKXTrader(config.OKXAPIKey, config.OKXSecretKey, config.OKXPassphrase)
 	case "hyperliquid":
 		logger.Infof("🏦 [%s] 使用Hyperliquid交易", config.Name)
 		trader, err = NewHyperliquidTrader(config.HyperliquidPrivateKey, config.HyperliquidWalletAddr, config.HyperliquidTestnet)
@@ -213,9 +221,28 @@ func NewAutoTrader(config AutoTraderConfig, st *store.Store, userID string) (*Au
 		return nil, fmt.Errorf("不支持的交易平台: %s", config.Exchange)
 	}
 
-	// 验证初始金额配置
+	// 验证初始金额配置，如果为0则自动从交易所获取
 	if config.InitialBalance <= 0 {
-		return nil, fmt.Errorf("初始金额必须大于0，请在配置中设置InitialBalance")
+		logger.Infof("📊 [%s] 初始金额未设置，尝试从交易所获取当前余额...", config.Name)
+		account, err := trader.GetBalance()
+		if err != nil {
+			return nil, fmt.Errorf("初始金额未设置且无法从交易所获取余额: %w", err)
+		}
+		// 尝试多种余额字段名（不同交易所返回格式不同）
+		balanceKeys := []string{"total_equity", "totalWalletBalance", "wallet_balance", "totalEq", "balance"}
+		var foundBalance float64
+		for _, key := range balanceKeys {
+			if balance, ok := account[key].(float64); ok && balance > 0 {
+				foundBalance = balance
+				break
+			}
+		}
+		if foundBalance > 0 {
+			config.InitialBalance = foundBalance
+			logger.Infof("✓ [%s] 自动获取初始金额: %.2f USDT", config.Name, foundBalance)
+		} else {
+			return nil, fmt.Errorf("初始金额必须大于0，请在配置中设置InitialBalance或确保交易所账户有余额")
+		}
 	}
 
 	// 获取最后的周期编号（用于恢复）