✨ Upgrade Go version to 1.23.0 and update dependencies. Introduce new application structure with Clean Architecture principles, including message processing, NATS integration, and PostgreSQL repository. Add configuration management using Koanf and structured logging with Zap. Remove legacy GraphQL integration and related files. Implement dependency injection with Google Wire.

internal/infra/log/logger.go

@@ -0,0 +1,45 @@
+package log
+
+import (
+	"caatsm/internal/infra/config"
+	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
+)
+
+// ProvideLogger creates a zap logger based on configuration
+func ProvideLogger(cfg *config.Config) (*zap.Logger, error) {
+	var zapConfig zap.Config
+	
+	if cfg.Log.Format == "console" {
+		zapConfig = zap.NewDevelopmentConfig()
+	} else {
+		zapConfig = zap.NewProductionConfig()
+	}
+	
+	// Set log level
+	switch cfg.Log.Level {
+	case "debug":
+		zapConfig.Level = zap.NewAtomicLevelAt(zapcore.DebugLevel)
+	case "info":
+		zapConfig.Level = zap.NewAtomicLevelAt(zapcore.InfoLevel)
+	case "warn":
+		zapConfig.Level = zap.NewAtomicLevelAt(zapcore.WarnLevel)
+	case "error":
+		zapConfig.Level = zap.NewAtomicLevelAt(zapcore.ErrorLevel)
+	default:
+		zapConfig.Level = zap.NewAtomicLevelAt(zapcore.InfoLevel)
+	}
+	
+	// Build logger
+	logger, err := zapConfig.Build(zap.AddCaller(), zap.AddStacktrace(zapcore.ErrorLevel))
+	if err != nil {
+		return nil, err
+	}
+	
+	// Note: We still replace global logger for backward compatibility with parsers package
+	// This will be removed once parsers are fully migrated to use dependency injection
+	zap.ReplaceGlobals(logger)
+	
+	return logger, nil
+}
+