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"""v4 → v5 migrator: additive `training.precision` override. |
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v5 introduces an optional `training.precision` field that lets users |
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opt into fp16/bf16 on MPS (where the auto-picker now defaults to fp32 |
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after the NaN-adapter bug of 2026-04-20; see |
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`.docs/bugs/01-nan-adapter-on-mps.md`). A v4 document without the |
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field parses as v5 unchanged — this migrator is pure identity, |
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present only to satisfy the migration-framework coverage contract. |
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""" |
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from __future__ import annotations |
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def migrate(raw: dict[str, object]) -> dict[str, object]: |
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return dict(raw) |