test: move slow and less critical tests to nightly suite

test/mv_web/member_live/index_custom_fields_display_test.exs

@@ -161,6 +161,7 @@ defmodule MvWeb.MemberLive.IndexCustomFieldsDisplayTest do
     }
   end
 
+  @tag :slow
   test "displays custom field with show_in_overview: true", %{
     conn: conn,
     member1: _member1,
@@ -229,6 +230,7 @@ defmodule MvWeb.MemberLive.IndexCustomFieldsDisplayTest do
     assert html =~ "true" or html =~ "Yes" or html =~ "Ja"
   end
 
+  @tag :slow
   test "formats date custom field values correctly", %{conn: conn, member1: _member1} do
     conn = conn_with_oidc_user(conn)
     {:ok, _view, html} = live(conn, "/members")
@@ -237,6 +239,7 @@ defmodule MvWeb.MemberLive.IndexCustomFieldsDisplayTest do
     assert html =~ "15.05.1990"
   end
 
+  @tag :slow
   test "formats email custom field values correctly", %{conn: conn, member1: _member1} do
     conn = conn_with_oidc_user(conn)
     {:ok, _view, html} = live(conn, "/members")

test/mv_web/member_live/index_custom_fields_edge_cases_test.exs

@@ -12,6 +12,7 @@ defmodule MvWeb.MemberLive.IndexCustomFieldsEdgeCasesTest do
 
   alias Mv.Membership.{CustomField, Member}
 
+  @tag :slow
   test "displays custom field column even when no members have values", %{conn: conn} do
     system_actor = Mv.Helpers.SystemActor.get_system_actor()
 
@@ -51,6 +52,7 @@ defmodule MvWeb.MemberLive.IndexCustomFieldsEdgeCasesTest do
     assert html =~ field.name
   end
 
+  @tag :slow
   test "displays very long custom field values correctly", %{conn: conn} do
     system_actor = Mv.Helpers.SystemActor.get_system_actor()
 
@@ -94,6 +96,7 @@ defmodule MvWeb.MemberLive.IndexCustomFieldsEdgeCasesTest do
     assert html =~ "A" or html =~ long_value
   end
 
+  @tag :slow
   test "handles multiple custom fields with show_in_overview correctly", %{conn: conn} do
     system_actor = Mv.Helpers.SystemActor.get_system_actor()