Question juridique clé
Whether the public-law appeal against the cantonal appellate decision on costs was admissible.
Solution extraite
The appeal was admissible because the costs allocation was governed exclusively by cantonal procedure and the challenged decision was final in the last cantonal instance.
Motifs extraits
The Federal Court held that no other federal remedy was available; the decision ended the case for procedural reasons and thus met the requirements of subsidiarity and finality.