Refactor test setup: use global setup and fix MembershipFees domain alias

- Remove redundant setup blocks from member_live tests
- Add build_unauthenticated_conn helper for AuthController tests
- Add global setup in conn_case.ex

test/mv_web/member_live/membership_fee_integration_test.exs

@@ -12,20 +12,6 @@ defmodule MvWeb.MemberLive.MembershipFeeIntegrationTest do
 
   require Ash.Query
 
-  setup do
-    # Create admin user
-    {:ok, user} =
-      Mv.Accounts.User
-      |> Ash.Changeset.for_create(:register_with_password, %{
-        email: "admin#{System.unique_integer([:positive])}@mv.local",
-        password: "testpassword123"
-      })
-      |> Ash.create()
-
-    conn = conn_with_password_user(build_conn(), user)
-    %{conn: conn, user: user}
-  end
-
   # Helper to create a membership fee type
   defp create_fee_type(attrs) do
     default_attrs = %{