期权交易"权利金"改为"开仓价"；新增期权双买交易功能，支持跨式策略开平仓及组合盈亏分析

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

ft-app/app/main.py

@@ -7,7 +7,7 @@ from starlette.middleware.base import BaseHTTPMiddleware
 from app.database import engine, Base, SessionLocal
 from app.models import User
 from app.seed import seed
-from app.routers import contracts, admin, auth, positions, trades, option_trades
+from app.routers import contracts, admin, auth, positions, trades, option_trades, dual_options
 
 TEMPLATES_DIR = Path(__file__).parent / "templates"
 
@@ -59,6 +59,7 @@ app.include_router(admin.router)
 app.include_router(positions.router)
 app.include_router(trades.router)
 app.include_router(option_trades.router)
+app.include_router(dual_options.router)
 
 
 @app.get("/")