193064c953
spec §195: 多策略并发下单"先到后到"不可复现 → 每策略独立max_allocation - StrategyRunner: max_allocation字段(默认inf) + used_allocation(持仓市值) - engine._match: BUY cash_enough后查 used+成交额>max_allocation → 拒单max_allocation_exceeded - live_orchestrator: runner传max_allocation(默认initial_capital) - routes_paper: StrategyCfg加max_allocation(API→DB→live_step数据流) - test_soft_limit: 3测试(累计超限拒单/默认不限/SELL不受限) 116 passed(113旧+3新), 无回归.