after refactor cleanup

DiunaBI.Application/DTOModels/LayerDto.cs

@@ -0,0 +1,37 @@
+namespace DiunaBI.Application.DTOModels;
+
+public class LayerDto
+{
+    public Guid Id { get; set; }
+    public int Number { get; set; }
+    public string? Name { get; set; }
+    public LayerType Type { get; set; }
+    public DateTime CreatedAt { get; set; }
+    public DateTime ModifiedAt { get; set; }
+    public Guid CreatedById { get; set; }
+    public Guid ModifiedById { get; set; }
+    public bool IsDeleted { get; set; }
+    public bool IsCancelled { get; set; }
+    public Guid? ParentId { get; set; }
+    
+    // Navigation properties
+    public List<RecordDto>? Records { get; set; }
+    public UserDto? CreatedBy { get; set; }
+    public UserDto? ModifiedBy { get; set; }
+}
+
+public enum LayerType
+{
+    Import,
+    Processed,
+    Administration,
+    Dictionary
+}
+
+public class LayerFilterRequest
+{
+    public string? Search { get; set; }
+    public LayerType? Type { get; set; }
+    public int Page { get; set; } = 1;
+    public int PageSize { get; set; } = 50;
+}