feat: implement core lobby management system with Nakama integration, player state, and game settings.

scenes/lobby.gd

@@ -186,6 +186,7 @@ func _ready():
 	LobbyManager.room_list_updated.connect(_on_room_list_updated)
 	LobbyManager.room_joined.connect(_on_room_joined)
 	LobbyManager.room_left.connect(_on_room_left)
+	LobbyManager.host_disconnected.connect(_on_host_disconnected)
 	LobbyManager.player_joined.connect(_on_player_joined)
 	LobbyManager.player_left.connect(_on_player_left)
 	LobbyManager.ready_state_changed.connect(_on_ready_state_changed)
@@ -216,6 +217,11 @@ func _ready():
 	
 	# Show main menu initially
 	_show_panel("main_menu")
+	
+	# Check for disconnection reason from manager
+	if not LobbyManager.disconnect_reason.is_empty():
+		connection_status.text = LobbyManager.disconnect_reason
+		LobbyManager.disconnect_reason = ""
 
 # =============================================================================
 # Setup
@@ -672,6 +678,10 @@ func _on_room_left() -> void:
 	_show_panel("main_menu")
 	connection_status.text = "Left room"
 
+func _on_host_disconnected() -> void:
+	_show_panel("main_menu")
+	connection_status.text = "Host disconnected. Match terminated."
+
 func _on_player_joined(player_data: Dictionary) -> void:
 	_update_player_slots()
 	status_label.text = "%s joined!" % player_data.get("name", "Player")