fix(review-batch3): 类型收紧生产清零137处(P1-2三步+延伸)+autoload class_name(ConfigDb/RngServiceCore)与_init标注(P2-1)+validate_skill_pool_links/ShopTable标注(P2-4)+相位enum外String面(P2-2)+typed-rows探针实证.tres装载转换；smoke缝合20处rows.assign+str(bb)同语义；审计生产双归零(240→103/83→59全测试链)，单测7套绿，冒烟576/0同基线

game/data/schemas/difficulty_table.gd

@@ -6,14 +6,14 @@
 class_name DifficultyTable
 extends Resource
 
-@export var rows: Array = []   # Array[Dictionary]：{level_index, node_depth, hp_mult, atk_mult}
+@export var rows: Array[Dictionary] = []   # Array[Dictionary]：{level_index, node_depth, hp_mult, atk_mult}
 
 const MULT_MIN := 0.1
 const MULT_MAX := 10.0
 
 
 func validate() -> Array:
-	var errs: Array = []
+	var errs: Array[Dictionary] = []
 	var seen := {}
 	for row in rows:
 		var L: int = int(row.get("level_index", 0))