- doc/release-policy.md:85 corrected `doc/api/tests.md` link to relative
`api/tests.md` (was resolving to nonexistent doc/doc/api/tests.md).
- doc/tutorials/block-fd-hessian.md:40 redirected stale reference
`../math/hyper-ideal.md` to the actual file `../math/geometry-modes.md`.
Found by a sweep of all doc/*.md before the reviewer meeting.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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