3aca14f723
run()循环体抽为step(bar_date,bars,prev_close,pending)→(pending,closes); run()改为调step。实走scheduler每日喂当日bar调step单步推进。 - 回放行为不变(test_engine原3用例pass) - 加test_engine_step_single_bar_advances: day1信号缓冲/day2撮合 - trader全量111/111通过