Question juridique clé
Whether the public-law appeal was admissible against the refusal to grant a residence permit
Solution extraite
No enforceable right to a residence permit existed under federal or international law, so the public-law appeal was not open.
Motifs extraits
The spouse provision no longer applied after the husband's death; no qualifying one-year regular stay existed, and pension-related hardship did not itself create a residence-permit right.