Question juridique clé
Is the reform appeal admissible against a cantonal decision on intervention claims?
Solution extraite
No. The challenged ruling concerns only the cantonal conditions for intervention claims under cantonal procedure, not a matter of federal private law.
Motifs extraits
The appellate court examined only the likelihood of recourse claims to decide intervention admissibility under cantonal law. Questions of federal private law raised incidentally do not transform the dispute into a reform-appeal matter.