Fix: Add companion object to ModelData class for fromJson extension

Author: mithun50

ai-module/src/main/java/com/nano/ai_module/model/ModelsData.kt

@@ -48,7 +48,9 @@ data class ModelData(
     // Prompt configuration
     var systemPrompt: String = "You are a helpful assistant.",
     var chatTemplate: String? = null
-)
+) {
+    companion object
+}
 
 
 @Serializable
@@ -164,9 +166,6 @@ fun ModelData.getFormattedSize(): String? {
     }
 }
 
-// Required companion object for fromJson extension
-fun ModelData.create() = ModelData()
-
 /**
  * Creates ModelData from JSON string for deserialization.
  */
@@ -199,8 +198,4 @@ fun ModelData.Companion.fromJson(jsonString: String): ModelData {
         systemPrompt = json.optString("systemPrompt", "You are a helpful assistant."),
         chatTemplate = json.optString("chatTemplate", null)
     )
-}
-
-// Companion object for ModelData
-val ModelData.Companion: ModelDataCompanion get() = ModelDataCompanion
-object ModelDataCompanion
+}