feat(shadow-desk): P1-b/c 影子柜台常驻进程+本地撮合broker+前端引擎选择: ShadowBroker(实时价±滑点即时成交/佣金印花最低佣金/A股整手/T+1日锁/资金不足拒单/均价加权/duck-typed BrokerBase协议); runner挂bullet_trade LiveEngine同实盘唯一差=broker_factory换影子(双轨对账基础),成交落paper_trades+30s快照落持仓净值; CLI单实例文件锁(python -m sanguo_trader.shadow); paper_accounts加engine列(eod_replay/shadow迁移); 前端:模拟盘新建组合卡撮合引擎单选+列表影子/日终徽标; 10 broker单测 [vps]

frontend/src/api/paper.ts

@@ -21,6 +21,8 @@ export interface PaperCreate {
   pool?: string
   max_pool?: number
   benchmark?: string
+  // 撮合引擎（影子柜台 P1）：eod_replay=日终回放 / shadow=影子柜台
+  engine?: string
 }
 
 export interface PaperAccount {
@@ -30,6 +32,7 @@ export interface PaperAccount {
   interval: string
   status: string
   strategy_type?: string
+  engine?: string
   symbols?: string
   initial_capital?: number
   start_date?: string

frontend/src/api/portfolio.ts

@@ -13,6 +13,8 @@ export interface PortfolioBacktestReq {
   stamp_duty_rate?: number
   min_commission?: number
   slippage?: number
+  // K线周期(组合回放暂仅日线 d)
+  interval?: string
 }
 
 export interface EquityPoint {