fix MerchantCategoryModel

@@ -42,6 +42,31 @@ public class MerchantCategoryModel: NSObject {
         self.name = dictionary["name"] as? String
     }
     
+    // MARK: - Codable Support
+    
+    private enum CodingKeys: String, CodingKey {
+        case uuid
+        case admin_name
+        case image
+        case parent
+        case fields
+        case children
+        case count
+        case name
+    }
+    
+    public required init(from decoder: Decoder) throws {
+        let container = try decoder.container(keyedBy: CodingKeys.self)
+        self.uuid = try container.decodeIfPresent(String.self, forKey: .uuid)
+        self.admin_name = try container.decodeIfPresent(String.self, forKey: .admin_name)
+        self.image = try container.decodeIfPresent(String.self, forKey: .image)
+        self.parent = try container.decodeIfPresent(String.self, forKey: .parent)
+        self.fields = try container.decodeIfPresent(String.self, forKey: .fields)
+        self.count = try container.decodeIfPresent(Int.self, forKey: .count)
+        self.name = try container.decodeIfPresent(String.self, forKey: .name)
+        self.children = [] // Default empty array for children
+    }
+    
     // MARK: - Public Accessors
     
     public var _uuid: String {
@@ -110,17 +135,6 @@ public class MerchantCategoryModel: NSObject {
 // MARK: - Codable Support
 
 extension MerchantCategoryModel: Codable {
-    private enum CodingKeys: String, CodingKey {
-        case uuid
-        case admin_name
-        case image
-        case parent
-        case fields
-        case children
-        case count
-        case name
-    }
-    
     public func encode(to encoder: Encoder) throws {
         var container = encoder.container(keyedBy: CodingKeys.self)
         try container.encode(uuid, forKey: .uuid)
@@ -132,18 +146,6 @@ extension MerchantCategoryModel: Codable {
         try container.encodeIfPresent(name, forKey: .name)
         // Note: children is [Any] so we skip encoding it for now
     }
-    
-    public required init(from decoder: Decoder) throws {
-        let container = try decoder.container(keyedBy: CodingKeys.self)
-        self.uuid = try container.decodeIfPresent(String.self, forKey: .uuid)
-        self.admin_name = try container.decodeIfPresent(String.self, forKey: .admin_name)
-        self.image = try container.decodeIfPresent(String.self, forKey: .image)
-        self.parent = try container.decodeIfPresent(String.self, forKey: .parent)
-        self.fields = try container.decodeIfPresent(String.self, forKey: .fields)
-        self.count = try container.decodeIfPresent(Int.self, forKey: .count)
-        self.name = try container.decodeIfPresent(String.self, forKey: .name)
-        self.children = [] // Default empty array for children
-    }
 }
 
 // MARK: - Debug Description