fix

Application/BudgetApplication.cs

@@ -84,14 +84,18 @@ public class BudgetApplication(
                 Limit = result.Month.Limit,
                 Current = result.Month.Current,
                 Remaining = result.Month.Limit - result.Month.Current,
-                UsagePercentage = result.Month.Rate
+                UsagePercentage = result.Month.Rate,
+                Trend = result.Month.Trend,
+                Description = result.Month.Description
             },
             Year = new BudgetStatsDetail
             {
                 Limit = result.Year.Limit,
                 Current = result.Year.Current,
                 Remaining = result.Year.Limit - result.Year.Current,
-                UsagePercentage = result.Year.Rate
+                UsagePercentage = result.Year.Rate,
+                Trend = result.Year.Trend,
+                Description = result.Year.Description
             }
         };
     }

Application/Dto/BudgetDto.cs

@@ -67,6 +67,8 @@ public record BudgetStatsDetail
     public decimal Current { get; init; }
     public decimal Remaining { get; init; }
     public decimal UsagePercentage { get; init; }
+    public List<decimal?> Trend { get; init; } = [];
+    public string Description { get; init; } = string.Empty;
 }
 
 /// <summary>

Application/TransactionCategoryApplication.cs

@@ -17,6 +17,7 @@ public interface ITransactionCategoryApplication
     Task<int> BatchCreateAsync(List<CreateCategoryRequest> requests);
     Task<string> GenerateIconAsync(GenerateIconRequest request);
     Task UpdateSelectedIconAsync(UpdateSelectedIconRequest request);
+    Task DeleteIconAsync(long classificationId);
 }
 
 /// <summary>
@@ -215,6 +216,25 @@ public class TransactionCategoryApplication(
         }
     }
 
+    public async Task DeleteIconAsync(long classificationId)
+    {
+        var category = await categoryRepository.GetByIdAsync(classificationId);
+        if (category == null)
+        {
+            throw new NotFoundException("分类不存在");
+        }
+
+        // 将 Icon 字段设置为 null
+        category.Icon = null;
+        category.UpdateTime = DateTime.Now;
+
+        var success = await categoryRepository.UpdateAsync(category);
+        if (!success)
+        {
+            throw new BusinessException("删除图标失败");
+        }
+    }
+
     private static CategoryResponse MapToResponse(TransactionCategory category)
     {
         return new CategoryResponse