test(迭代35卡①): 补战斗保底判据专测夹具（低于保底必拒＋保底 1 下不误伤），使 fv7 有可红判据

game/tests/unit/core/node_map_generator_test.gd

@@ -334,7 +334,16 @@ func _test_negative_fixtures() -> void:
 		{"id": 0, "type": "mine", "depth": 0, "next": [1]},
 		{"id": 1, "type": "boss", "depth": 1, "next": []}])
 	Kit.check("类型出域夹具报 enum〔fv1〕", _has_cat(_gen.validate_output(badty), "enum"))
-	# 非 Boss 终点（断头链末不是 boss）——判据消息专一断言（防「别的检查顺带兜住」的假拦截）
+	# 战斗保底判据专测：形状合法但战斗节点数低于保底的夹具必须被自证拒收
+	var thin_battle := _fx([
+		{"id": 0, "type": "battle", "depth": 0, "next": [1]},
+		{"id": 1, "type": "reward", "depth": 1, "next": [2]},
+		{"id": 2, "type": "shop", "depth": 2, "next": [3]},
+		{"id": 3, "type": "boss", "depth": 3, "next": []}])
+	Kit.check("战斗节点低于 battle_floor 的合法形状夹具命中「低于保底」判据〔fv7〕",
+		_has_msg(_gen.validate_output(thin_battle, {"battle_floor": 4}), "低于保底"))
+	Kit.check("同夹具在保底 1 下自证零错误（判据不误伤）〔fv7〕",
+		_gen.validate_output(thin_battle, {"battle_floor": 1}).is_empty())
 	var noBoss := _fx([
 		{"id": 0, "type": "battle", "depth": 0, "next": [1]},
 		{"id": 1, "type": "battle", "depth": 1, "next": []}])