plan: execute 2026-05-31-publish trusted-publishing release prep#4

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MMerryweather merged 3 commits into

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plan/2026-05-31-publish

May 31, 2026

Commits on May 31, 2026

plan(publish): harden publish workflow and align release docs (WP1-WP3)
mat
committed
plan(publish): refresh release gate evidence and restore benchmark fixtures (WP4-WP6)
mat
committed
test(release-gate): verify benchmark fixture hashes against manifest
mat
committed