Questione giuridica chiave
Whether the federal appeal was admissible against the refusal to recuse the expert.
Decisione estratta
The decision was a final cantonal decision in civil matters and could be challenged independently; the appellant had standing to invoke fair-trial guarantees.
Motivazione estratta
Under cantonal law the competent judge rules on expert recusal without appeal; the refusal therefore qualified as a final cantonal decision. The complaint concerned Art. 29(1) Cst. and Art. 6(1) ECHR, which could be raised by ordinary civil appeal or subsidary constitutional complaint.