{"id":"wal-checkpoint-returns-seq","text":"`WriteAheadLog.checkpoint()` returns the sequence number it wrote, providing the caller the exact truncation boundary for the WAL-to-data-store coordination protocol","truth_value":"IN","source":"entries/2026/05/29/topic-log-structured-checkpoint-coordination.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"wal-checkpoint-returns-seq","truth_value":"IN","reason":"premise"}]}}