Status: IN
State monotonicity has no exception path: because deletion never destroys data (preconditions prevent premature removal, append-only metadata preserves history), the operation most likely to violate monotonic accumulation is itself accumulative — deletion reinforces rather than threatens the monotonic state model.
deletion is the natural adversary of monotonic accumulation; showing it is itself accumulative closes the last potential escape path from the monotonicity invariant
Depends on (SL): deletion-is-doubly-preserved, state-is-monotonically-accumulative