Address review comments from zcash/orchard PR #471#105

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ConstanceBeguier wants to merge 3 commits intozsa1from

zcash_pr471_review

Commits on Jan 19, 2026

Update Orchard and librustzcash refs for PR471 review sync (#104)
ConstanceBeguier
authored

Commits on Feb 16, 2026

Merge branch 'zcash_pr471_review' of https://github.com/QED-it/zebra into zcash_pr471_review
dmidem
committed

Commits on Feb 25, 2026

Merge branch 'zsa1' into zcash_pr471_review
dmidem
committed