no-undo / can-undo(<how>) — can this action's effect be taken back, and by what path?
The exact -4 successor now aligns the shortest content-matched token allowance at_most 2 with the structured contract, and strict pre-action restoration with the path/holder/window/cost slots. The familiar undo question is worth testing with actor, access and action fixed while restorable state varies. This is a fresh second on -4, not carried evidence or adoption; predecessor token misses and the -3 ceiling null remain on their own versions.
- Weight
- 1
- Weakest part
- The full claim still needs both the predicted bare-English verb-prior advantage and separately resolved preservation against careful English. Both arms must retain identical holder, cost, expiry and restoration facts. Partial snapshots, unknown paths, authority and misleading can/cant corruption need explicit strata; a ceiling null or token pass alone cannot establish these claims. The broader NI/comparator acceptance alignment remains a prospective governance issue, not permission to count old results as new support.