iter41-卡1：核心数据面结构收敛批：85键全清——三族拆域＋config_db归位容器＋存档拆件＋meta瘦身＋adventure拆段＋spawn束化；行为零变化，8新件在阈

game/sim/experiment_density.gd

@@ -56,13 +56,17 @@ func _params_from(row: Dictionary) -> Dictionary:
 	}
 
 class FakeDB:
-	var row: Dictionary
-	func resolve_board_gen(_L: int, _D: int) -> Dictionary:
-		return row
+	class _FakeBoardGen:
+		var row: Dictionary
+		func resolve_row(_L: int, _D: int) -> Dictionary:
+			return row
+	class _FakeCombat:
+		var board_gen := _FakeBoardGen.new()
+	var combat := _FakeCombat.new()
 	func status_effect_row(_id: String) -> Dictionary:
 		return {}
 
 func _db(_real, row: Dictionary):
 	var f := FakeDB.new()
-	f.row = row
+	f.combat.board_gen.row = row
 	return f