feat: add debate arena and fix multiple issues

- Add AI debate arena for multi-AI trading decisions
- Fix debate consensus calculation and display
- Fix vote parsing to support both <decision> and <final_vote> tags
- Fix JSON field name compatibility (stop_loss/stop_loss_pct)
- Fix symbol validation to prevent AI hallucinating invalid symbols
- Fix Bybit position side display (was uppercase, now lowercase for consistency)
- Fix NOFX logo navigation to home page
- Add detailed logging for debugging trade execution

manager/trader_manager.go

@@ -3,6 +3,8 @@ package manager
 import (
 	"context"
 	"fmt"
+	"nofx/debate"
+	"nofx/decision"
 	"nofx/logger"
 	"nofx/store"
 	"nofx/trader"
@@ -11,6 +13,27 @@ import (
 	"time"
 )
 
+// TraderExecutorAdapter wraps AutoTrader to implement debate.TraderExecutor
+type TraderExecutorAdapter struct {
+	autoTrader *trader.AutoTrader
+}
+
+// ExecuteDecision executes a trading decision
+func (a *TraderExecutorAdapter) ExecuteDecision(d *decision.Decision) error {
+	return a.autoTrader.ExecuteDecision(d)
+}
+
+// GetBalance returns account balance
+func (a *TraderExecutorAdapter) GetBalance() (map[string]interface{}, error) {
+	info, err := a.autoTrader.GetAccountInfo()
+	if err != nil {
+		return nil, fmt.Errorf("failed to get account info: %w", err)
+	}
+	// Log the balance for debugging
+	logger.Infof("[Debate] GetBalance for trader, result: %+v", info)
+	return info, nil
+}
+
 // CompetitionCache competition data cache
 type CompetitionCache struct {
 	data      map[string]interface{}
@@ -696,3 +719,13 @@ func (tm *TraderManager) addTraderFromStore(traderCfg *store.Trader, aiModelCfg
 
 	return nil
 }
+
+// GetTraderExecutor returns a TraderExecutor for the given trader ID
+// This is used by the debate module to execute consensus trades
+func (tm *TraderManager) GetTraderExecutor(traderID string) (debate.TraderExecutor, error) {
+	at, err := tm.GetTrader(traderID)
+	if err != nil {
+		return nil, err
+	}
+	return &TraderExecutorAdapter{autoTrader: at}, nil
+}