{"id":"btree-no-underflow-rebalancing","text":"Delete does not rebalance underfilled nodes; the only cleanup is freeing empty non-leftmost leaves at depth 2 — a deliberate simplification over production B-trees.","truth_value":"IN","source":"entries/2026/05/28/b-tree-storage-engine-btree.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"btree-no-underflow-rebalancing","truth_value":"IN","reason":"premise"}]}}