{"id":"notif-group-key-unused","text":"`_pending_groups` dict and `_group_window` field are initialized in `NotificationService.__init__` but never used — appears to be a planned notification batching/digest feature that was never implemented","truth_value":"OUT","source":"entries/2026/06/05/notification-system-notification_system.md","source_url":"","source_hash":"","justifications":[],"dependents":["notification-system-is-delivery-complete"],"metadata":{"_retracted":true},"created_at":"","updated_at":"2026-06-17T14:30:24+00:00","reviewed_at":"","verified_at":"","retracted_at":"2026-06-17T14:30:24+00:00","explanation":{"steps":[{"node":"notif-group-key-unused","truth_value":"OUT","reason":"retracted premise"}]}}