{"id":"commit-only-in-batch","text":"`OP_COMMIT` is written exclusively by `append_batch()` in `write-ahead-log/wal.py`; single `append()` calls never produce a COMMIT record, so individual operations are their own atomic unit","truth_value":"IN","source":"entries/2026/05/29/topic-checkpoint-vs-commit-semantics.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"commit-only-in-batch","truth_value":"IN","reason":"premise"}]}}