{"id":"btree-wal-checksum-excludes-page-num","text":"In `b-tree-storage-engine/btree.py`, the WAL entry checksum covers only `page_data`, so a corrupted `page_num` during recovery writes a valid page to the wrong disk location without detection — the most dangerous integrity gap in the codebase","truth_value":"IN","source":"entries/2026/05/29/topic-crc-coverage-audit.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"btree-wal-checksum-excludes-page-num","truth_value":"IN","reason":"premise"}]}}