{"id":"btree-file-never-shrinks","text":"The B-tree data file only grows (via `next_free` bump in `allocate_page`) and never shrinks; no truncate, compact, or defrag operation exists anywhere in the module.","truth_value":"IN","source":"entries/2026/05/29/topic-free-list-fragmentation.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"btree-file-never-shrinks","truth_value":"IN","reason":"premise"}]}}