Fix proxy pivot derivation to use global rest (local rest was misplacing the Quaternius joints)

src/game/npc_avatar.gd

@@ -495,14 +495,14 @@ func _bind_bones() -> void:
 	for index in _skeleton.get_bone_count():
 		_bone_indices[_skeleton.get_bone_name(index)] = index
 
-## First-found rest origin for a list of candidate bone names. Lets the proxy
-## pivots track the actual skeleton (old 13-core or Quaternius 62-joint).
+## First-found rest origin for a list of candidate bone names, in the skeleton's
+## space (global rest), so proxy pivots sit on the actual joints.
 func _rest_origin(names: Array) -> Vector3:
 	if _skeleton == null:
 		return Vector3.ZERO
 	for bone_name in names:
 		if _bone_indices.has(bone_name):
-			return _skeleton.get_bone_rest(_bone_indices[bone_name]).origin
+			return _skeleton.get_bone_global_rest(_bone_indices[bone_name]).origin
 	return Vector3.ZERO
 
 ## Copy the proxy pivot rotations onto armature bones. Limb bones point down, so