{
  "id": "material-export-contract",
  "name": "material-export-contract",
  "title": "Material export contract",
  "description": "Move Cesium material export overrides from export_cesium.py name tables into catalog-backed material contracts saved on Blender materials.",
  "status": "completed",
  "dev_type": "refactor",
  "scope": "blender",
  "package": "blender",
  "priority": "P2",
  "creator": "dingkang",
  "assignee": "dingkang",
  "createdAt": "2026-08-03",
  "completedAt": "2026-08-03",
  "branch": null,
  "base_branch": "main",
  "worktree_path": null,
  "commit": null,
  "pr_url": null,
  "subtasks": [],
  "children": [],
  "parent": null,
  "relatedFiles": [
    "blender/osmassets/catalog.py",
    "blender/osmassets/materials.py",
    "blender/export_cesium.py",
    ".trellis/spec/blender/module-structure.md",
    ".trellis/spec/blender/asset-generation.md",
    ".trellis/spec/guides/artifact-parity-guide.md"
  ],
  "notes": "Complex task. Planning artifacts must be reviewed before task.py start; preserve old .blend export fallback and validate with unittest plus parity evidence.",
  "meta": {}
}