Phase0十维方案(锁分片/三层Semaphore/sub_react_loop/审批sub_flow/压缩协调/UX事件schema/规划校验/planner+plan_hint/全局协调/测试矩阵)+路线图(DAG/关键路径115人时/0a-0b-0c三子阶段独立可回退);4agent共识P0机制缺失须先Phase0
