Aggiunge replay YouTube temporaneo, pull registrazioni dai CPX e snapshot ingest in admin.

Così overflow Hetzner e VOD YouTube restano in archivio dopo lo spegnimento del nodo, e la colonna ingest non si svuota.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/services/sessions/stop.rb

@@ -12,7 +12,7 @@ module Sessions
       complete_youtube_broadcast! if @session.youtube_broadcast_id.present?
 
       recording = Recordings::FinalizeSession.new(@session).call
-      Recordings::UploadJob.perform_async(@session.id) if recording
+      Recordings::UploadJob.perform_async(@session.id) if recording&.status == "processing"
       remove_mediamtx_paths!
 
       log_event("ended")