Questione giuridica chiave
Whether the federal appeal against the cantonal detention decision was admissible despite the request focusing on a declaration of past unlawful detention.
Decisione estratta
The appeal was admissible because the appellant had a current legal interest in a judicial finding of temporary unlawful detention and could invoke a denial of justice.
Motivazione estratta
A person may challenge a refusal to decide on a requested declaration of unlawfulness; this constitutes a legally protected interest and raises a federal-law issue.