Set global log level to Debug for enhanced logging

- Change zerolog global log level from Info to Debug
- Improve visibility into application startup and runtime behavior

cmd/main.go

@@ -15,7 +15,7 @@ const (
 
 func main() {
 
-	zerolog.SetGlobalLevel(zerolog.InfoLevel)
+	zerolog.SetGlobalLevel(zerolog.DebugLevel)
 	log.Info().Msg("starting gateway")
 
 	rootCmd := app.NewRootCommand()