Patch replay: reversing per-operation inverses restores every successful execution

What this target establishes

Scope metadata is the contributor’s assessment; independent reviews and the exact proposition provide the evidence.

Obligations

undo

Cost metric

none

Model

Undo of a successfully executed sequence by reversing the operation identifiers.

Assumptions

Every successful individual step has an undo restoring its original state. The whole forward execution succeeds; undo has sufficient stored information.

Implementation correspondence

abstract model

Limitations

Does not construct inverse data for destructive operations; no concurrent merge guarantee.