{
  "planA": {
    "correctness": 4,
    "completeness": 4,
    "risk": 5,
    "sequencing": 5,
    "conciseness": 3
  },
  "planB": {
    "correctness": 5,
    "completeness": 4,
    "risk": 5,
    "sequencing": 4,
    "conciseness": 4
  },
  "winner": "B",
  "rationale": "Both are strong and cover the testable module, workflow, safety invariants, fixed-branch PR behavior, and key tests. Plan B is slightly closer to the shipped architecture and more concise, while Plan A has better test-first sequencing but adds some unnecessary detail and assumptions."
}