feat: update some visual and fixing the bug

scenes/player.gd

@@ -1096,6 +1096,9 @@ func _process(delta):
 	if LobbyManager.get_randomize_spawn() and spawn_point_selected and not visible:
 		visible = true
 
+	if not multiplayer.has_multiplayer_peer():
+		return
+
 	if is_multiplayer_authority():
 		# Visual debugging - show display name with connection status
 		$Name.text = display_name if not display_name.is_empty() else str(name)
@@ -1184,6 +1187,9 @@ var last_sent_position: Vector3
 
 func _physics_process(delta):
 	# Sync position periodically (Heartbeat / Smoothing)
+	if not multiplayer.has_multiplayer_peer():
+		return
+		
 	if is_multiplayer_authority():
 		# OPTIMIZATION: Only send smoothing updates if we ARE NOT currently mid-tween
 		# The start/end of paths are already synced via start_movement_along_path.