Status: IN
State reversal is prevented by redundant mechanisms at different architectural levels: operational guards (preconditions before permanent removal, two-phase trash workflows) prevent accidental data loss at the operation level, while structural ratchets (one-directional state machines, monotonic accumulation) prevent regression at the architectural level — defense-in-depth against the single most dangerous failure mode.
Operational guards and structural ratchets independently prevent state reversal at different levels
Depends on (SL): state-reversal-is-uniformly-guarded, temporal-regression-is-structurally-impossible