feat: unify NofxOS data provider and fix language consistency

- Add unified NofxOS API key configuration in IndicatorEditor
- Add language field to StrategyConfig for consistent prompt generation
- Auto-update prompt sections when interface language changes
- Remove scattered URL inputs from CoinSourceEditor and IndicatorEditor
- Create nofxos provider package with formatted data output
- Update kernel engine to use config-based language setting

backtest/config.go

@@ -199,7 +199,7 @@ func (cfg *BacktestConfig) ToStrategyConfig() *store.StrategyConfig {
 		if len(cfg.Symbols) > 0 {
 			result.CoinSource.SourceType = "static"
 			result.CoinSource.StaticCoins = cfg.Symbols
-			result.CoinSource.UseCoinPool = false
+			result.CoinSource.UseAI500 = false
 			result.CoinSource.UseOITop = false
 		}
 
@@ -241,12 +241,12 @@ func (cfg *BacktestConfig) ToStrategyConfig() *store.StrategyConfig {
 
 	return &store.StrategyConfig{
 		CoinSource: store.CoinSourceConfig{
-			SourceType:    "static",
-			StaticCoins:   cfg.Symbols,
-			UseCoinPool:   false,
-			CoinPoolLimit: len(cfg.Symbols),
-			UseOITop:      false,
-			OITopLimit:    0,
+			SourceType: "static",
+			StaticCoins: cfg.Symbols,
+			UseAI500:   false,
+			AI500Limit: len(cfg.Symbols),
+			UseOITop:   false,
+			OITopLimit: 0,
 		},
 		Indicators: store.IndicatorConfig{
 			Klines: store.KlineConfig{

backtest/runner.go

@@ -519,7 +519,7 @@ func (r *Runner) buildDecisionContext(ts int64, marketData map[string]*market.Da
 
 	// Fetch quantitative data if enabled in strategy (uses current data as approximation)
 	strategyConfig := r.strategyEngine.GetConfig()
-	if strategyConfig.Indicators.EnableQuantData && strategyConfig.Indicators.QuantDataAPIURL != "" {
+	if strategyConfig.Indicators.EnableQuantData {
 		// Collect symbols to query (candidate coins + position coins)
 		symbolSet := make(map[string]bool)
 		for _, sym := range r.cfg.Symbols {
@@ -547,6 +547,24 @@ func (r *Runner) buildDecisionContext(ts int64, marketData map[string]*market.Da
 		}
 	}
 
+	// Fetch NetFlow ranking data if enabled in strategy
+	if strategyConfig.Indicators.EnableNetFlowRanking {
+		ctx.NetFlowRankingData = r.strategyEngine.FetchNetFlowRankingData()
+		if ctx.NetFlowRankingData != nil {
+			logger.Infof("💰 Backtest: NetFlow ranking data ready: inst_in=%d, inst_out=%d",
+				len(ctx.NetFlowRankingData.InstitutionFutureTop), len(ctx.NetFlowRankingData.InstitutionFutureLow))
+		}
+	}
+
+	// Fetch Price ranking data if enabled in strategy
+	if strategyConfig.Indicators.EnablePriceRanking {
+		ctx.PriceRankingData = r.strategyEngine.FetchPriceRankingData()
+		if ctx.PriceRankingData != nil {
+			logger.Infof("📈 Backtest: Price ranking data ready for %d durations",
+				len(ctx.PriceRankingData.Durations))
+		}
+	}
+
 	record := &store.DecisionRecord{
 		AccountState: store.AccountSnapshot{
 			TotalBalance:          accountInfo.TotalEquity,