fix(candy-survival): ensure Ghost mode button is always visible on HUD and syncs correctly on player load

scripts/managers/candy_survival_manager.gd

@@ -632,6 +632,9 @@ func sync_state_to_player(peer_id: int) -> void:
 	# Sync Mekton's current face color
 	if mekton_node and mekton_node.has_method("set_face_color_rpc"):
 		mekton_node.rpc_id(peer_id, "set_face_color_rpc", current_face)
+		
+	# Sync Ghost inventory to make the HUD button visible on player load
+	_update_special_inventory_for_ghosts(peer_id)
 	
 	# Sync all players' candy stack heights and colors
 	for pid in player_candy_colors.keys():

scripts/ui/powerup_inventory_ui.gd

@@ -199,5 +199,12 @@ func _on_inventory_updated(inventory: Dictionary):
 		power_up_button.modulate = Color.WHITE
 		_update_btn_shortcut(power_up_button)
 	else:
-		power_up_button.visible = false
-		power_up_button.disabled = true
+		if LobbyManager.game_mode == "Candy Survival":
+			power_up_button.visible = true
+			power_up_button.icon = effect_textures.get(3) # ghost.png
+			power_up_button.disabled = true
+			power_up_button.modulate = Color(0.5, 0.5, 0.5, 0.5)
+			_update_btn_shortcut(power_up_button)
+		else:
+			power_up_button.visible = false
+			power_up_button.disabled = true