Refactor container to work in muliplayer

Containers/plate_controller.gd

@@ -6,12 +6,10 @@ extends Node
 
 @export var is_dirty: bool = false
 
-## Synced plate contents (item ids), replacing reparented child nodes so
-## contents survive replication (a MultiplayerSpawner-tracked item would
-## despawn on every client the instant it was reparented out of WorldContent).
-## Server writes it via ItemContainer; every peer (server included) renders
-## the cosmetic result via the setter below.
-@export var contained_ids: Array[String] = []: set = _set_contained_ids
+## Synced summary of the plate's contents (item ids). The contents themselves
+## are the real item nodes ItemContainer reparents under the plate; this is only
+## what other systems read to ask "what is on this plate" without walking them.
+@export var contained_ids: Array[String] = []
 
 func get_food_items() -> Array[FoodItem]:
 	return container.contained_items
@@ -29,22 +27,3 @@ func _process(_delta: float) -> void:
 	else:
 		container.enabled = true
 		dirty_node.visible = false
-
-
-func _set_contained_ids(value: Array[String]) -> void:
-	# Only rebuild when the contents actually changed. This property is
-	# replicated in ALWAYS mode, so the synchronizer assigns it every network
-	# tick on every peer that doesn't own the plate — and refresh_visuals()
-	# frees and re-instantiates a scene per item each time. That was thousands
-	# of throwaway nodes per run (and a log line from each one's NetPickable).
-	if contained_ids == value:
-		return
-	contained_ids = value
-	# Deferred: this can be written by the replicated spawn payload before
-	# this node's own @onready vars (container) have resolved.
-	_refresh_visuals.call_deferred()
-
-
-func _refresh_visuals() -> void:
-	if container:
-		container.refresh_visuals(contained_ids)