{
  "branches": [
    {
      "id": "main",
      "hypothesis": "A lean explicit phase-field solver plus structure-aware evaluation can repixelize fake pixel art better than resize baselines without reviving optimizer sprawl.",
      "status": "active",
      "artifacts": [
        "state/map.yaml",
        "state/scratch.md",
        "state/evidence.jsonl",
        "docs/implementation-plan.md",
        "docs/lean-optimizer-algorithm-map.md",
        "docs/solver-tuning-lessons-2026-04-29.md"
      ],
      "notes": "Active mainline. Current priority is shipping the hosted experiment with the usable radius=0.215/blend=0.24 solver config; later solver tuning should start from that basin and sweep signal knobs first."
    }
  ]
}