feat(userManagement): add user detail view and filtering capabilities

Models/DataBase/Favorite.cs

@@ -5,14 +5,13 @@ namespace Foxel.Models.DataBase;
 
 public class Favorite
 {
-    [Key]
-    public int Id { get; set; }
-    
-    public User User { get; set; }
-    
+    [Key] public int Id { get; set; }
+
+    public int UserId { get; set; }
+    [ForeignKey("UserId")] public User User { get; set; }
+
     public int PictureId { get; set; }
-    [ForeignKey("PictureId")]
-    public Picture Picture { get; set; }
-    
+    [ForeignKey("PictureId")] public Picture Picture { get; set; }
+
     public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
-}
+}

Models/Response/User/UserDetailResponse.cs

@@ -0,0 +1,21 @@
+namespace Foxel.Models.Response.User;
+
+public class UserDetailResponse
+{
+    public int Id { get; set; }
+    public string UserName { get; set; } = string.Empty;
+    public string Email { get; set; } = string.Empty;
+    public string Role { get; set; } = string.Empty;
+    public DateTime CreatedAt { get; set; }
+    public UserStatistics Statistics { get; set; } = new();
+}
+
+public class UserStatistics
+{
+    public int TotalPictures { get; set; }
+    public int TotalAlbums { get; set; }
+    public int TotalFavorites { get; set; }
+    public int FavoriteReceivedCount { get; set; }
+    public double DiskUsageMB { get; set; }
+    public int AccountAgeDays { get; set; }
+}