Key legal question
Whether the public-law appeal was admissible against the cantonal costs and compensation ruling in an immigration matter
Extracted holding
The public-law appeal was excluded because no enforceable right to the residence permit existed; only the subsidiary constitutional complaint could be examined on costs and compensation.
Extracted reasoning
A permit under the discretionary hardship clause created no federal or treaty-based entitlement. The unity-of-proceedings principle barred the public-law appeal where it would not be available on the merits.