Question juridique clé
Whether the constitutional complaint was admissible and whether the complainant had standing under Art. 115 lit. b BGG.
Solution extraite
The complaint was inadmissible because the challenged cantonal decision was directed against A________, not against the appellant, so it lacked a legally protected interest.
Motifs extraits
Only a person affected by the challenged decision may file a subsidiarity constitutional complaint; the appellant was not bound by the cantonal decision and therefore could not seek its annulment.