Questione giuridica chiave
Whether the request to annul the Lucerne tax administration decision and post-deadline supplements were admissible
Decisione estratta
The request against the earlier Lucerne decision was inadmissible because it had been replaced by the cantonal court judgment, and the late supplements were disregarded.
Motivazione estratta
Only the final cantonal judgment could be challenged; unsolicited submissions after the appeal period had no effect.