Question juridique clé
Whether the cantonal court violated the appellant's right to reply before deciding on detention review.
Solution extraite
Yes. The appellant had not clearly waived the right to respond to the prosecution's observations, and the court decided too quickly after service to presume waiver.
Motifs extraits
The observations were served late on Friday and consulted on Monday; the appellant had requested access to the file the day before judgment. Effective exercise of the reply right required a real opportunity to comment.