merge(master): 并入 master 新进提交（变异测试全项目清除/测试规约重编号/撤销证明口径/golden 加严/S13 基线）——本批测试面按现行规约重读复核

game/data/schemas/level_table.gd

@@ -53,7 +53,8 @@ static func validate_graph(nodes: Array) -> Array:
 	var well := _check_nodes_wellformed(nodes)
 	if not (well["errs"] as Array).is_empty():
 		return well["errs"]
-	var by_id: Dictionary = well["by_id"]
+	var by_id: Dictionary[int, Dictionary] = {}
+	by_id.assign(well["by_id"])
 	var edges := _check_edges(by_id, well["indeg"])
 	if not (edges["errs"] as Array).is_empty():
 		return edges["errs"]