品种增加每点价值字段，PNL计算支持不同品种差异化配置

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

ft-app/app/routers/admin.py

@@ -48,6 +48,7 @@ def admin_page(request: Request, db: Session = Depends(get_db)):
             "code": p.code,
             "name": p.name,
             "exchange": p.exchange,
+            "point_value": p.point_value,
             "contracts": contract_list,
         })
 
@@ -71,11 +72,12 @@ def create_product(
     code: str = Form(...),
     name: str = Form(...),
     exchange: str = Form(...),
+    point_value: int = Form(20),
     db: Session = Depends(get_db),
 ):
     existing = db.query(Product).filter(Product.code == code.upper()).first()
     if not existing:
-        p = Product(code=code.upper(), name=name, exchange=exchange)
+        p = Product(code=code.upper(), name=name, exchange=exchange, point_value=point_value)
         db.add(p)
         db.commit()
     return RedirectResponse("/admin/?tab=product", status_code=303)

ft-app/app/routers/option_trades.py

@@ -67,7 +67,12 @@ def open_trade(
 ):
     code = contract_code.upper()
     contract = db.query(Contract).filter(Contract.code == code).first()
-    product_code = contract.product.code if contract else code[:2]
+    if contract:
+        product = contract.product
+    else:
+        product = db.query(Product).filter(Product.code == code[:2]).first()
+    product_code = product.code if product else code[:2]
+    point_value = product.point_value if product else 20
 
     t = OptionTrade(
         product_code=product_code,
@@ -78,6 +83,7 @@ def open_trade(
         open_date=date.fromisoformat(open_date),
         open_price=open_price,
         open_fee=open_fee,
+        point_value=point_value,
         status="open",
     )
     db.add(t)
@@ -124,7 +130,12 @@ def edit_trade(
     if t:
         code = contract_code.upper()
         contract = db.query(Contract).filter(Contract.code == code).first()
-        t.product_code = contract.product.code if contract else code[:2]
+        if contract:
+            product = contract.product
+        else:
+            product = db.query(Product).filter(Product.code == code[:2]).first()
+        t.product_code = product.code if product else code[:2]
+        t.point_value = product.point_value if product else 20
         t.contract_code = code
         t.option_type = option_type
         t.direction = direction

ft-app/app/routers/trades.py

@@ -74,7 +74,12 @@ def open_trade(
 ):
     code = contract_code.upper()
     contract = db.query(Contract).filter(Contract.code == code).first()
-    product_code = contract.product.code if contract else code[:2]
+    if contract:
+        product = contract.product
+    else:
+        product = db.query(Product).filter(Product.code == code[:2]).first()
+    product_code = product.code if product else code[:2]
+    point_value = product.point_value if product else 20
 
     t = Trade(
         product_code=product_code,
@@ -83,6 +88,7 @@ def open_trade(
         open_date=date.fromisoformat(open_date),
         open_price=open_price,
         open_fee=open_fee,
+        point_value=point_value,
         status="open",
     )
     db.add(t)
@@ -127,7 +133,12 @@ def edit_trade(
     if t:
         code = contract_code.upper()
         contract = db.query(Contract).filter(Contract.code == code).first()
-        t.product_code = contract.product.code if contract else code[:2]
+        if contract:
+            product = contract.product
+        else:
+            product = db.query(Product).filter(Product.code == code[:2]).first()
+        t.product_code = product.code if product else code[:2]
+        t.point_value = product.point_value if product else 20
         t.contract_code = code
         t.direction = direction
         t.open_date = date.fromisoformat(open_date)