remove dead code

android/app/src/main/java/com/example/petstoremobile/fragments/listfragments/detailfragments/InventoryDetailFragment.java

@@ -26,7 +26,6 @@ import com.example.petstoremobile.dtos.InventoryDTO;
 import com.example.petstoremobile.dtos.InventoryRequest;
 import com.example.petstoremobile.dtos.PageResponse;
 import com.example.petstoremobile.dtos.ProductDTO;
-import com.example.petstoremobile.fragments.listfragments.InventoryFragment;
 import com.example.petstoremobile.utils.ErrorUtils;
 
 import java.util.ArrayList;
@@ -52,7 +51,6 @@ public class InventoryDetailFragment extends Fragment {
 
     @Inject InventoryApi inventoryApi;
     @Inject ProductApi productApi;
-    private InventoryFragment inventoryFragment;
 
     private boolean isEditing = false;
     private long inventoryId = -1;
@@ -68,13 +66,6 @@ public class InventoryDetailFragment extends Fragment {
     private final List<ProductDTO> productSuggestions = new ArrayList<>();
     private ArrayAdapter<String> dropdownAdapter;
 
-    /**
-     * Sets the parent inventory fragment to notify of changes.
-     */
-    public void setInventoryFragment(InventoryFragment fragment) {
-        this.inventoryFragment = fragment;
-    }
-
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
@@ -270,7 +261,7 @@ public class InventoryDetailFragment extends Fragment {
                     setButtonsEnabled(true);
                     if (response.isSuccessful()) {
                         Toast.makeText(getContext(), "Inventory updated", Toast.LENGTH_SHORT).show();
-                        notifyParentAndGoBack();
+                        navigateBack();
                     } else {
                         ErrorUtils.showErrorMessage(getContext(), response, "Update failed");
                     }
@@ -289,7 +280,7 @@ public class InventoryDetailFragment extends Fragment {
                     setButtonsEnabled(true);
                     if (response.isSuccessful()) {
                         Toast.makeText(getContext(), "Inventory created", Toast.LENGTH_SHORT).show();
-                        notifyParentAndGoBack();
+                        navigateBack();
                     } else {
                         ErrorUtils.showErrorMessage(getContext(), response, "Create failed");
                     }
@@ -327,7 +318,7 @@ public class InventoryDetailFragment extends Fragment {
                 setButtonsEnabled(true);
                 if (response.isSuccessful()) {
                     Toast.makeText(getContext(), "Inventory deleted", Toast.LENGTH_SHORT).show();
-                    notifyParentAndGoBack();
+                    navigateBack();
                 } else {
                     ErrorUtils.showErrorMessage(getContext(), response, "Delete failed");
                 }
@@ -341,15 +332,6 @@ public class InventoryDetailFragment extends Fragment {
         });
     }
 
-    /**
-     * Notifies the parent fragment of a change and navigates back.
-     */
-    private void notifyParentAndGoBack() {
-        if (inventoryFragment != null)
-            inventoryFragment.onInventoryChanged();
-        navigateBack();
-    }
-
     /**
      * Navigates back to the previous fragment.
      */

android/app/src/main/java/com/example/petstoremobile/fragments/listfragments/detailfragments/ServiceDetailFragment.java

@@ -18,7 +18,6 @@ import android.widget.Toast;
 import com.example.petstoremobile.R;
 import com.example.petstoremobile.api.ServiceApi;
 import com.example.petstoremobile.dtos.ServiceDTO;
-import com.example.petstoremobile.fragments.listfragments.ServiceFragment;
 import com.example.petstoremobile.utils.ActivityLogger;
 import com.example.petstoremobile.utils.ErrorUtils;
 import com.example.petstoremobile.utils.InputValidator;
@@ -41,17 +40,9 @@ public class ServiceDetailFragment extends Fragment {
     private Button btnSaveService, btnDeleteService, btnBack;
     private int serviceId;
     private boolean isEditing = false;
-    private ServiceFragment serviceFragment;
 
     @Inject ServiceApi serviceApi;
 
-    /**
-     * Sets the parent service fragment to notify of changes.
-     */
-    public void setServiceFragment(ServiceFragment fragment) {
-        this.serviceFragment = fragment;
-    }
-
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
@@ -207,7 +198,7 @@ public class ServiceDetailFragment extends Fragment {
     }
 
     /**
-     * Set UI components from the layout.
+     * Initializes UI components from the layout.
      */
     private void initViews(View view) {
         tvMode = view.findViewById(R.id.tvMode);
@@ -220,4 +211,4 @@ public class ServiceDetailFragment extends Fragment {
         btnDeleteService = view.findViewById(R.id.btnDeleteService);
         btnBack = view.findViewById(R.id.btnBack);
     }
-}
+}

android/app/src/main/java/com/example/petstoremobile/viewmodels/PetViewModel.java

@@ -1,7 +1,6 @@
 package com.example.petstoremobile.viewmodels;
 
 import androidx.lifecycle.LiveData;
-import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.ViewModel;
 
 import com.example.petstoremobile.dtos.PageResponse;
@@ -17,7 +16,6 @@ import okhttp3.MultipartBody;
 @HiltViewModel
 public class PetViewModel extends ViewModel {
     private final PetRepository repository;
-    private final MutableLiveData<Long> _petId = new MutableLiveData<>();
 
     @Inject
     public PetViewModel(PetRepository repository) {