feat: update vfx

scenes/lobby.gd

@@ -140,6 +140,10 @@ var _bot_names: Dictionary = {}
 # Room list filter ("" = all, "Freemode", "Stop n Go", etc.)
 var _room_mode_filter: String = ""
 
+# Re-entry guard for the async host flow (prevents double-click from starting
+# two overlapping create_match() calls).
+var _is_hosting: bool = false
+
 # =============================================================================
 # Chat System
 # =============================================================================
@@ -248,6 +252,13 @@ func _ready():
 	# Connect UserProfileManager signals
 	UserProfileManager.profile_loaded.connect(func(_p): _sync_room_profile_card())
 	UserProfileManager.profile_updated.connect(func(): _sync_room_profile_card())
+
+	# Clear the host re-entry guard whenever the host flow concludes — success,
+	# failure, or leaving the room.
+	LobbyManager.room_joined.connect(func(_r): _is_hosting = false)
+	LobbyManager.room_left.connect(func(): _is_hosting = false)
+	NakamaManager.match_join_error.connect(func(_e): _is_hosting = false)
+	NakamaManager.connection_failed.connect(func(_e): _is_hosting = false)
 	
 	# Connect Mailbox UI
 	if MailManager: