Download S3 audio during prepare

internal/app/runner.go

@@ -81,6 +81,13 @@ func executeStages(ctx context.Context, cfg *config.Config, stages []stage.Stage
 	if env.Storage == nil {
 		env.Storage = &storage.NoopBackend{}
 	}
+	if env.ObjectStore == nil && env.Config != nil && env.Config.Session != nil && env.Config.Session.Inputs.AudioS3 != nil {
+		objectStore, err := storage.NewObjectStoreFromConfig(ctx, env.Config)
+		if err != nil {
+			return nil, fmt.Errorf("initialize object store backend: %w", err)
+		}
+		env.ObjectStore = objectStore
+	}
 	if env.Notifier == nil {
 		env.Notifier = &notify.NoopSender{}
 	}