data2dsl

Participant: antigravity (AI agent)

Understanding

Fix mypy static typing error in contract validator and add full unit test suite for Data2DslSkill. SESSION_EXECUTION_AUTHORIZATION recorded from user request.

Execution plan

1. Fix _utc() in src/data2dsl_contract_v0/validate.py.
2. Fix _normalize_raw in src/data2dsl_skill.py for Code2Schema.
3. Add tests/test_skill.py covering all tool modes and adapters.
4. Verify 25/25 tests pass, mypy passes (12 files), ruff passes.
5. Verify governance gate, push branch, and dispatch validator-agent.

Actual changes

• Fixed utcoffset type narrowing in validate.py.
• Fixed Code2Schema response handling in data2dsl_skill.py.
• Added 9 unit tests in tests/test_skill.py.

Blockers

• None inside the recorded intent; proceed without a second confirmation.