{
  "_note": "M253 接线自检的变异向量（r1 复审那 19 条 + 1 条本轮的）。每条按解析后的结构注入，不靠文本排版：op ∈ step_delete / job_delete / step_set / job_set / run_append / run_replace；target 是步骤或 job 的 id。expect = 必须报错的判据名（与 gpu_shot_ci_selftest.py 的 CHECKS 键逐字一致）。",
  "vectors": [
    {"id": "M1", "label": "自测步命令后加 || true（自测被吞）", "op": "run_append", "target": "vectors", "value": " || true", "expect": "6 不吞退出码"},
    {"id": "M2", "label": "接线自检步命令后加 || true（守卫守不到自己）", "op": "run_append", "target": "wiring", "value": " || true", "expect": "6 不吞退出码"},
    {"id": "M2b", "label": "接线自检步命令后加 ; true", "op": "run_append", "target": "wiring", "value": "; true", "expect": "6 不吞退出码"},
    {"id": "M3", "label": "判定的门加 || always()（门形同虚设）", "op": "job_set", "target": "evidence", "key": "if", "value": "needs.probe.outputs.available == 'true' || always()", "expect": "2 判定必须挂门"},
    {"id": "M4", "label": "判据命令后加裸 exit 0", "op": "run_append", "target": "judge", "value": "\nexit 0\n", "expect": "6 不吞退出码"},
    {"id": "M5", "label": "整行删掉 ::warning:: 告警", "op": "run_replace", "target": "detect", "find": "echo \"::warning::GPU 证据：跳过（${reason}）—— 本次运行没有判过任何真实产物，不构成「GPU 证据已验证」\"", "replace": "", "expect": "4 跳过路径真跑"},
    {"id": "M6", "label": "不再写 $GITHUB_OUTPUT（判定永远拿不到产物）", "op": "run_replace", "target": "detect", "find": ">> \"$GITHUB_OUTPUT\"", "replace": ">> /dev/null", "expect": "4 跳过路径真跑"},
    {"id": "M7", "label": "selftest job 加 job 级 if: false", "op": "job_set", "target": "selftest", "key": "if", "value": false, "expect": "1 五步必须在场"},
    {"id": "M8", "label": "探测步加 continue-on-error: true", "op": "step_set", "target": "detect", "key": "continue-on-error", "value": true, "expect": "5 禁 continue-on-error"},
    {"id": "M9", "label": "接线自检步加 if: false", "op": "step_set", "target": "wiring", "key": "if", "value": false, "expect": "1 五步必须在场"},
    {"id": "M10", "label": "整步删掉接线自检", "op": "step_delete", "target": "wiring", "expect": "1 五步必须在场"},
    {"id": "M11", "label": "dispatch 分支 available 恒 false（门禁永久关闭）", "op": "run_replace", "target": "detect", "find": "available=true", "replace": "available=false", "occurrence": 1, "expect": "4 跳过路径真跑"},
    {"id": "M12", "label": "约定产物分支 available 恒 false（门禁永久关闭）", "op": "run_replace", "target": "detect", "find": "available=true", "replace": "available=false", "occurrence": 2, "expect": "4 跳过路径真跑"},
    {"id": "M13", "label": "整块删掉 evidence job", "op": "job_delete", "target": "evidence", "expect": "1 五步必须在场"},
    {"id": "M14", "label": "::warning:: 改成裸 echo（跳过变静默 pass）", "op": "run_replace", "target": "detect", "find": "::warning::", "replace": "", "expect": "4 跳过路径真跑"},
    {"id": "M15", "label": "整步删掉 --self-test", "op": "step_delete", "target": "vectors", "expect": "1 五步必须在场"},
    {"id": "M16", "label": "整步删掉退出码语义 0/1/2", "op": "step_delete", "target": "exitcodes", "expect": "1 五步必须在场"},
    {"id": "M17", "label": "continue-on-error: 'true'（带引号）", "op": "step_set", "target": "detect", "key": "continue-on-error", "value": "true", "expect": "5 禁 continue-on-error"},
    {"id": "M18", "label": "continue-on-error: ${{ true }}（表达式）", "op": "step_set", "target": "detect", "key": "continue-on-error", "value": "${{ true }}", "expect": "5 禁 continue-on-error"},
    {"id": "M19", "label": "判定步加 if: ${{ always() }}", "op": "step_set", "target": "judge", "key": "if", "value": "${{ always() }}", "expect": "2 判定必须挂门"},
    {"id": "M20", "label": "判定步的命令换成 true（不再调判据脚本）", "op": "run_replace", "target": "judge", "find": "python3 packaging/check_gpu_shot.py \"$LOG\" \"$PNG\"", "replace": "true", "expect": "3 判定用探测给的产物"}
  ]
}