{
  "decisionDate": "2026-04-19",
  "scope": "boundary-runtime-prerequisites-roadmap",
  "startingState": {
    "boundaryClosed": [
      "G7"
    ],
    "boundaryHeld": [
      "G6",
      "G8"
    ],
    "mainlineClosed": [
      "G1-E",
      "G2",
      "G3"
    ],
    "deferredOutOfScope": [
      "G4",
      "G5"
    ]
  },
  "comparisonMatrix": [
    {
      "direction": "G6-host-bridge-prerequisites",
      "blockedCapability": "host bridge real-sample execution semantics",
      "isolationCost": "medium",
      "decision": "selected",
      "reason": "It concentrates on one prerequisite line and is narrower than the combined local-doc plus attachment burden."
    },
    {
      "direction": "G8-local-doc-prerequisites",
      "blockedCapability": "local document runtime and attachment handling",
      "isolationCost": "high",
      "decision": "hold",
      "reason": "It still combines local pipeline runtime and attachment handling, which is broader than the next bounded slice should absorb."
    }
  ],
  "selectedDirection": {
    "direction": "G6-host-bridge-prerequisites",
    "nextDesign": "docs/superpowers/specs/2026-04-19-g6-host-bridge-prerequisites-design.md",
    "nextPlan": "docs/superpowers/plans/2026-04-19-g6-host-bridge-prerequisites-plan.md"
  },
  "holdReasons": [
    "G8 remains held because local document runtime and attachment handling still form a heavier prerequisite bundle than G6 host-bridge semantics."
  ],
  "notes": [
    "The roadmap selects one prerequisite direction only.",
    "No boundary family execution is opened under this roadmap."
  ]
}