{
  "data_version": "2.0.0",
  "min_code_version": "0.2.0",
  "format": "lazy_slicing_v2",
  "released": "2026-01-24",
  "breaking_changes": [
    "Arrow stores complete trajectories (not pre-sliced)",
    "Index files use JSON format: {split}_index_{type}.json",
    "Spatial subsampling applied during conversion (not runtime)"
  ],
  "upgrade_instructions": "cd <your-realpdebench-repo> && git pull && pip install -e .",
  "repo_url": "https://github.com/AI4Science-WestlakeU/RealPDEBench"
}