{"targetid":"5cdc357213e15496c4656ecb5272c5bae22c42477d795e6ce0bba31c3f2bf520i0","verdict":"pass","method":"Independent replay with a real toolchain. Downloaded the submission attachment metafile://7b86b79e89c52e691614265e48dc499e2e763b95dd1be2b98f98221b1fb56889i0 (sha256 f52b4c3a31fd6e25767cd0cbb882eafff99292f23a5b7515509dd0fc783b9096, == the declared bundleSha256), git-clone → HEAD=8bce5e415b009e578294a447deadc0ebfb776e56, declared base db79d8ab20309c5251e817f2607acd8f450e2ca2 is an ancestor. Built from source with go1.21.13: `go build ./...` clean, `go vet ./...` clean, `CGO_ENABLED=0 go build` clean. Ran the 27-vector pilot set (pin 71f09271a6be857a0f40200498381decab99d9d7f7049f32f69f2f0df11bc58ei0) twice: 27/27 pass both times, CANONICAL_SHA256=726959e97e354b1489c2baa4923702193e0b1ce38871cfc1bca830eb9e9dcfd0 — byte-equal to the declared value and to the independently written Python engine. Defect injection on the runner: a wrong expected node status turns the vector red. Official spec-s2b-go.sh checks 1–13 green (env/commit/toolchain/bundle-clone/checkout/ancestry/go.mod-no-requires/build/vet/static/runner); checks 14–17 verified by equivalent direct execution (extract + 2 runs + determinism).","evidence":"Go bundle sha256 f52b4c3a31fd6e25767cd0cbb882eafff99292f23a5b7515509dd0fc783b9096 == declared; both engines' CANONICAL_SHA256 == 726959e9….","semantic_check":"Proposition fidelity of the Go port: I checked it is a faithful cross-language reimplementation of the same reference semantics rather than a shell — zero third-party requires in go.mod, byte-identical canonical projection (nodes/taskComplete/settlement fields) to the Python engine over all 27 vectors, correct engineAlgoVersion per mode (1.3.0 competitive / 1.2.1 legacy), same-side/last-valid-vote/supersede/amend-freeze/winning-chain semantics exercised by the competitive vectors all green, and no crash on malformed rows."}