struct&&assiQues

Entities/Contracts/Submission.cs

@@ -41,7 +41,7 @@ namespace Entities.Contracts
 
 		[Column("graded_by")]
 		[ForeignKey("Grader")]
-		public Guid? GradedBy { get; set; }
+		public Guid? GraderId { get; set; }
 
 		[Column("graded_at")]
 		public DateTime? GradedAt { get; set; }
@@ -74,6 +74,5 @@ namespace Entities.Contracts
 		Resubmission,   // 待重新提交 (如果允许)
 		Late,           // 迟交
 		Draft,          // 草稿
-						// ... 添加你需要的其他状态
 	}
 }