Status: OUT
B-tree structural integrity silently erodes over time: deletions cause monotonic degradation (leaked pages, ever-growing height) while the I/O layer performs no validation to detect or report the resulting inconsistencies.
Degradation from deletion combines with absent I/O validation to create an unobservable structural decline
Depends on (SL): btree-delete-causes-monotonic-degradation, btree-page-io-has-no-defensive-checks