feat: 实盘模拟(live) + 组合回测MVP(portfolio)

[live] 实盘模拟 vnpy+miniQMT 直连(supervisor 轮询, 前后端):
- sanguo_live: LiveTradingEngine + AShareCtaTemplate(定寸/禁做空) + runner_supervisor(DB驱动) + persistence(4表WAL)
- sanguo_api/routes_live: 9路由(create/start/stop/positions/trades/account/status)
- frontend live: New/List/Monitor + api/live.ts; config/live.yaml

[portfolio] 组合回测 MVP(BulletTrade, 链路代码完成待验证):
- runner_backtest 加 JSON 入口(--json, BacktestEngine 顶层 import)
- sanguo_api/routes_portfolio: POST /portfolio/backtest SSH 触发 VPS 跑
- frontend PortfolioBacktest.vue + api/portfolio.ts: 表单+结果+净值曲线
- 路由/菜单注册(/backtest/portfolio 组合回测)
- 已知: MVP 链路未端到端验证, agent 改至中途被停; 待 Mac 起服务联调

sanguo_api/app.py

@@ -3,7 +3,9 @@ FastAPI application factory for Sanguo Quant API
 """
 from fastapi import FastAPI
 from .routes import router, set_orchestrator, set_auth_config
-from .routes_paper import router as paper_router, set_db_path
+from .routes_paper import router as paper_router, set_db_path as set_paper_db_path
+from .routes_live import router as live_router, set_db_path as set_live_db_path
+from .routes_portfolio import router as portfolio_router
 from .auth import set_jwt_config
 from .ws import manager
 from sanguo_orchestrator.runner import Orchestrator
@@ -35,7 +37,10 @@ def create_app(db_path: str, file_dir=None, auth_config=None, max_workers: int =
     # Include routes
     app.include_router(router, prefix="/api/v1")
     app.include_router(paper_router, prefix="/api/v1")
-    set_db_path(db_path)
+    app.include_router(live_router, prefix="/api/v1")
+    app.include_router(portfolio_router, prefix="/api/v1")
+    set_paper_db_path(db_path)
+    set_live_db_path(db_path)
 
     @app.on_event("startup")
     def _register_live_step():