feat: expand multiplayer, chat, and release support

- add network NPC synchronization and dialogue interactions
- add world bulletin publishing and display
- improve authentication, session refresh, and appearance sync
- synchronize player direction and movement animations
- improve input focus and progressive Web loading
- add macOS/Windows builds and deployment configuration
- include required fonts, shaders, and runtime assets

scenes/Maps/Square.gd

@@ -20,6 +20,9 @@ const CAMERA_LIMIT_BOTTOM: int = 960
 func _ready() -> void:
 	_apply_spawn_point()
 	_configure_camera()
+	var chatManager := get_node_or_null("/root/ChatManager")
+	if chatManager != null and chatManager.has_method("is_guest_mode") and bool(chatManager.call("is_guest_mode")):
+		player.set_spectator_mode(true)
 
 func _apply_spawn_point() -> void:
 	var spawnName: String = SceneManager.get_next_spawn_name()