feat: 交易记录接口增加stockCode字段返回

AssetManager.Models/DTOs/PortfolioDTO.cs

@@ -82,6 +82,7 @@ public class TransactionItem
     public string? time { get; set; }
     public string? type { get; set; }
     public string? title { get; set; }
+    public string? stockCode { get; set; }
     public double amount { get; set; }
     public string? currency { get; set; }
     public string? status { get; set; }

AssetManager.Services/PortfolioService.cs

@@ -403,6 +403,7 @@ public class PortfolioService : IPortfolioService
                 time = t.TransactionTime.ToString("HH:mm:ss"),
                 type = t.Type,
                 title = t.Title,
+                stockCode = t.StockCode,
                 amount = (double)t.TotalAmount,
                 currency = t.Currency,
                 status = t.Status,