fix: add actor parameter to Authorization.get_role in Index

Ensure consistent authorization by passing actor parameter to
get_role call, matching the pattern used in Show LiveView.

lib/mv_web/live/role_live/index.ex

@@ -21,9 +21,10 @@ defmodule MvWeb.RoleLive.Index do
 
   require Ash.Query
 
+  on_mount {MvWeb.LiveHelpers, :ensure_user_role_loaded}
+
   @impl true
   def mount(_params, _session, socket) do
-    socket = ensure_user_role_loaded(socket)
     actor = socket.assigns[:current_user]
     roles = load_roles(actor)
     user_counts = load_user_counts(roles)
@@ -35,34 +36,9 @@ defmodule MvWeb.RoleLive.Index do
      |> assign(:user_counts, user_counts)}
   end
 
-  defp ensure_user_role_loaded(socket) do
-    if socket.assigns[:current_user] do
-      user = socket.assigns.current_user
-      user_with_role = load_user_role(user)
-      assign(socket, :current_user, user_with_role)
-    else
-      socket
-    end
-  end
-
-  defp load_user_role(user) do
-    case Map.get(user, :role) do
-      %Ash.NotLoaded{} -> load_role_safely(user)
-      nil -> load_role_safely(user)
-      _role -> user
-    end
-  end
-
-  defp load_role_safely(user) do
-    case Ash.load(user, :role, domain: Mv.Accounts) do
-      {:ok, loaded_user} -> loaded_user
-      {:error, _} -> user
-    end
-  end
-
   @impl true
   def handle_event("delete", %{"id" => id}, socket) do
-    case Authorization.get_role(id) do
+    case Authorization.get_role(id, actor: socket.assigns.current_user) do
       {:ok, role} ->
         handle_delete_role(role, id, socket)
 
@@ -96,10 +72,11 @@ defmodule MvWeb.RoleLive.Index do
            gettext("System roles cannot be deleted.")
          )}
 
-      recalculate_user_count(role) > 0 ->
+      true ->
         user_count = recalculate_user_count(role)
 
-        {:noreply,
+        if user_count > 0 do
+          {:noreply,
          put_flash(
            socket,
            :error,
@@ -108,9 +85,9 @@ defmodule MvWeb.RoleLive.Index do
              count: user_count
            )
          )}
-
+        else
-      true ->
+          perform_role_deletion(role, id, socket)
-        perform_role_deletion(role, id, socket)
+        end
     end
   end
 
@@ -153,10 +130,15 @@ defmodule MvWeb.RoleLive.Index do
 
     # Load all users with role_id in a single query
     users =
-      Accounts.User
+      case Ash.read(
-      |> Ash.Query.filter(role_id in ^role_ids)
+             Accounts.User
-      |> Ash.Query.select([:role_id])
+             |> Ash.Query.filter(role_id in ^role_ids)
-      |> Ash.read!(domain: Mv.Accounts)
+             |> Ash.Query.select([:role_id]),
+             domain: Mv.Accounts
+           ) do
+        {:ok, users_list} -> users_list
+        {:error, _} -> []
+      end
 
     # Group by role_id and count
     users