Refactor HTMX response handling in ExamViews: streamline rendering of updated CID user list items and ensure consistent response structure

generic/views.py

@@ -2379,9 +2379,9 @@ class ExamViews(View, LoginRequiredMixin):
                 else:
                     app_exam_map[self.app_name].remove(pk)
 
-                # If this is an HTMX request, return the rendered li partial
-                if request.headers.get('HX-Request') == 'true':
-                    # Render the updated list item and return as HTML so HTMX can swap it
+                # Always return the rendered list-item HTML so HTMX (or our fetch fallback)
+                # can swap the updated `<li>` into the DOM. Also provide an `HX-Trigger`
+                # header so client-side toasts/handlers can respond.
                 html = render_to_string(
                     'generic/partials/cid_user_li.html',
                     {'cid': cid_user, 'exam': exam, 'current': add},
@@ -2391,9 +2391,6 @@ class ExamViews(View, LoginRequiredMixin):
                 response['HX-Trigger'] = json.dumps({'cid_toggled': {'pk': cid_user.pk, 'added': add}})
                 return response
 
-                data = {"status": "success", "added": add}
-                return JsonResponse(data, status=200)
-
             if "edit_user_user" in request.POST:
                 user_id = request.POST.get("edit_user_user")