feat: Add SystemPromptTemplate edit support (PR #339)

- Allow users to modify SystemPromptTemplate when editing Trader
- Enable dynamic strategy switching (default/aggressive/conservative)
- Support A/B testing of different trading strategies
- Maintain backward compatibility with existing data
- Complete full data flow from database through UI to persistence

api/server.go

@@ -457,13 +457,14 @@ type UpdateTraderRequest struct {
 	AIModelID            string  `json:"ai_model_id" binding:"required"`
 	ExchangeID           string  `json:"exchange_id" binding:"required"`
 	InitialBalance       float64 `json:"initial_balance"`
+	ScanIntervalMinutes  int     `json:"scan_interval_minutes"`
 	BTCETHLeverage       int     `json:"btc_eth_leverage"`
 	AltcoinLeverage      int     `json:"altcoin_leverage"`
 	TradingSymbols       string  `json:"trading_symbols"`
 	CustomPrompt         string  `json:"custom_prompt"`
 	OverrideBasePrompt   bool    `json:"override_base_prompt"`
+	SystemPromptTemplate string  `json:"system_prompt_template"`
 	IsCrossMargin        *bool   `json:"is_cross_margin"`
-	ScanIntervalMinutes int     `json:"scan_interval_minutes"`
 }
 
 // handleUpdateTrader 更新交易员配置
@@ -519,6 +520,12 @@ func (s *Server) handleUpdateTrader(c *gin.Context) {
 		scanIntervalMinutes = existingTrader.ScanIntervalMinutes // 保持原值
 	}
 
+	// 设置系统提示词模板，允许更新
+	systemPromptTemplate := req.SystemPromptTemplate
+	if systemPromptTemplate == "" {
+		systemPromptTemplate = existingTrader.SystemPromptTemplate // 保持原值
+	}
+
 	// 更新交易员配置
 	trader := &config.TraderRecord{
 		ID:                   traderID,
@@ -532,7 +539,7 @@ func (s *Server) handleUpdateTrader(c *gin.Context) {
 		TradingSymbols:       req.TradingSymbols,
 		CustomPrompt:         req.CustomPrompt,
 		OverrideBasePrompt:   req.OverrideBasePrompt,
-		SystemPromptTemplate: existingTrader.SystemPromptTemplate, // 保持原值
+		SystemPromptTemplate: systemPromptTemplate,
 		IsCrossMargin:        isCrossMargin,
 		ScanIntervalMinutes:  scanIntervalMinutes,
 		IsRunning:            existingTrader.IsRunning, // 保持原值

web/src/components/AITradersPage.tsx

@@ -213,7 +213,7 @@ export function AITradersPage({ onTraderSelect }: AITradersPageProps) {
         trading_symbols: data.trading_symbols,
         custom_prompt: data.custom_prompt,
         override_base_prompt: data.override_base_prompt,
-        system_prompt_template: data.system_prompt_template, // 添加此字段
+        system_prompt_template: data.system_prompt_template,
         is_cross_margin: data.is_cross_margin,
         use_coin_pool: data.use_coin_pool,
         use_oi_top: data.use_oi_top

web/src/types.ts

@@ -195,7 +195,7 @@ export interface TraderConfigData {
   trading_symbols: string;
   custom_prompt: string;
   override_base_prompt: boolean;
-  system_prompt_template: string; // 添加系统提示词模板字段
+  system_prompt_template: string;
   is_cross_margin: boolean;
   use_coin_pool: boolean;
   use_oi_top: boolean;