Kernrechtsfrage
Whether the mislabeled constitutional complaint should be treated as a civil appeal and is admissible against an incidental recusal decision.
Extrahierter Entscheid
The filing is treated as a civil appeal; the decision on recusal was immediately appealable and the value threshold was met.
Extrahierte Begründung
The Federal Tribunal checks admissibility ex officio. Although the recourant used the wrong label, the challenged decision concerned recusal in a civil monetary dispute and therefore fell under the ordinary civil appeal route, which excludes the subsidiary constitutional complaint.