# TASK-089-06-01: Core Contract Tests, Schemas, and Documentation

**Parent:** [TASK-089-06](./TASK-089-06_Contract_Tests_Schemas_and_Documentation.md)  
**Status:** ✅ Done  
**Priority:** 🟡 Medium  
**Depends On:** [TASK-089-05](./TASK-089-05_Adapter_Dual_Format_Delivery_Strategy.md)

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## Objective

Implement the core code changes for **Contract Tests, Schemas, and Documentation**.

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## Repository Touchpoints

- `tests/unit/tools/scene/test_scene_contracts.py`
- `tests/unit/tools/mesh/test_mesh_contracts.py`
- `tests/unit/router/application/test_router_contracts.py`
- `_docs/_MCP_SERVER/README.md`
- `README.md`
- `_docs/AVAILABLE_TOOLS_SUMMARY.md`
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## Planned Work

- schema snapshot tests
- documentation examples in:
  - `_docs/_MCP_SERVER/README.md`
  - `README.md`
  - `_docs/AVAILABLE_TOOLS_SUMMARY.md`
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## Acceptance Criteria

- contracts are versionable, testable, and documented
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## Atomic Work Items

1. Implement the leaf scope in the listed touchpoints.
2. Keep the implementation aligned with the parent task boundaries and the existing runtime call path.
