fix: push notification

internal/service/push_sender.go

@@ -77,8 +77,10 @@ func (p *PushSender) SendToUser(ctx context.Context, userID string, payload Push
 			Subscriber:      p.subject,
 			VAPIDPublicKey:  p.pub,
 			VAPIDPrivateKey: p.priv,
-			TTL:             60,
-			Urgency:         webpush.UrgencyNormal,
+			// Hold the message for up to 6h so a sleeping/offline device
+			// still gets it on wake (60s would silently expire meanwhile).
+			TTL:     6 * 60 * 60,
+			Urgency: webpush.UrgencyNormal,
 		})
 		if err != nil {
 			p.logger.Warn("push: send failed", zap.String("user", userID), zap.Error(err))