add initial application structure with configuration, logging, and health check endpoints

internal/infra/log/logger.go

@@ -15,9 +15,21 @@ func NewLogger(cfg *config.Config) (*zap.Logger, error) {
 
 	zapCfg := zap.NewProductionConfig()
 	zapCfg.Level = zap.NewAtomicLevelAt(level)
+	zapCfg.EncoderConfig.CallerKey = "caller"
+	zapCfg.EncoderConfig.StacktraceKey = "stacktrace"
 	if cfg.Log.Format == "console" {
-		zapCfg.Encoding = "console"
+		devCfg := zap.NewDevelopmentConfig()
+		devCfg.Level = zap.NewAtomicLevelAt(level)
+		devCfg.EncoderConfig.CallerKey = "caller"
+		devCfg.EncoderConfig.StacktraceKey = "stacktrace"
+		return devCfg.Build(
+			zap.AddCaller(),
+			zap.AddStacktrace(zapcore.ErrorLevel),
+		)
 	}
 
-	return zapCfg.Build()
+	return zapCfg.Build(
+		zap.AddCaller(),
+		zap.AddStacktrace(zapcore.ErrorLevel),
+	)
 }