持仓页面品种tab增加全平按钮，支持按品种批量平仓

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

ft-app/app/routers/trades.py

@@ -152,6 +152,29 @@ def edit_trade(
     return RedirectResponse("/trades/", status_code=303)
 
 
+@router.post("/bulk-close")
+def bulk_close(
+    request: Request,
+    product_code: str = Form(...),
+    close_date: str = Form(...),
+    close_price: float = Form(...),
+    close_fee: float = Form(0.0),
+    db: Session = Depends(get_db),
+):
+    trades = (
+        db.query(Trade)
+        .filter(Trade.product_code == product_code.upper(), Trade.status == "open")
+        .all()
+    )
+    for t in trades:
+        t.close_date = date.fromisoformat(close_date)
+        t.close_price = close_price
+        t.close_fee = close_fee
+        t.status = "closed"
+    db.commit()
+    return RedirectResponse("/trades/", status_code=303)
+
+
 @router.post("/{trade_id}/delete")
 def delete_trade(trade_id: int, db: Session = Depends(get_db)):
     t = db.query(Trade).filter(Trade.id == trade_id).first()