{"id":"meta-page-fixed-20-byte-payload","text":"The metadata payload is exactly 20 bytes (5 big-endian uint32s packed as `'>5I'`), zero-padded to `page_size`; the format requires `page_size >= 20` but this is not enforced.","truth_value":"IN","source":"entries/2026/05/29/b-tree-storage-engine-btree-_write_meta.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"meta-page-fixed-20-byte-payload","truth_value":"IN","reason":"premise"}]}}