{"id":"notif-priority-heap-stable","text":"The priority queue uses a three-element key `(priority, timestamp, seq)` where `seq` is a monotonic counter, ensuring stable FIFO ordering within the same priority level","truth_value":"IN","source":"entries/2026/06/05/notification-system-notification_system.md","source_url":"","source_hash":"","justifications":[],"dependents":["notification-system-is-delivery-complete"],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"notif-priority-heap-stable","truth_value":"IN","reason":"premise"}]}}