交易记录新建开仓改为先选品种再选合约

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

ft-app/app/routers/trades.py

@@ -20,6 +20,17 @@ def get_active_contracts(db: Session) -> list[str]:
     return [c[0] for c in contracts]
 
 
+def get_product_contracts(db: Session) -> dict:
+    """Return {product_code: [contract_codes]} for active contracts."""
+    result: dict[str, list[str]] = {}
+    products = db.query(Product).order_by(Product.code).all()
+    for p in products:
+        codes = [c.code for c in p.contracts if c.is_active]
+        if codes:
+            result[p.code] = codes
+    return result
+
+
 def today_str() -> str:
     return date.today().isoformat()
 
@@ -41,6 +52,7 @@ def trades_page(request: Request, db: Session = Depends(get_db)):
             request=request,
             active_nav="trades",
             contracts=get_active_contracts(db),
+            product_contracts=get_product_contracts(db),
             directions=DIRECTIONS,
             open_trades=open_trades,
             closed_trades=closed_trades,