Index: ChapterX.API/DTOs/CollaborationDto.cs
===================================================================
--- ChapterX.API/DTOs/CollaborationDto.cs	(revision 877c13c3dd0934c1d31da7988d0d2c2c5925ed55)
+++ ChapterX.API/DTOs/CollaborationDto.cs	(revision e882b92860e1899312f197af1134bb0f33d30d15)
@@ -7,4 +7,6 @@
         public int UserId { get; set; }
         public int StoryId { get; set; }
+        public string Role { get; set; } = string.Empty;
+        public int? PermissionLevel { get; set; }
         public DateTime CreatedAt { get; set; }
 
@@ -12,6 +14,4 @@
         public UserDto User { get; set; } = null!;
         public StoryDto Story { get; set; } = null!;
-        public ICollection<RolesDto> Roles { get; set; } = [];
-        public ICollection<PermissionLevelDto> PermissionLevels { get; set; } = [];
     }
 }