docs: gate release merges and tagging on polled CI success

[htnabe]

Summary

• Require polling release PR CI to success before merging, with a 5-minute cap that fails the release on timeout
• Require the publish workflow to succeed before creating the git tag and GitHub Release
• Add polling command examples and remove stale release-event checklist items
• Pin the publish job to npm@^11 so trusted publishing works on Node 22.22.1

Background

The v0.0.17 publish run failed at npm install -g npm@latest: npm 12 requires Node ^22.22.2 || ^24.15.0 || >=26.0.0, but the workflow runs Node 22.22.1. npm 11.18.0 satisfies both that Node range and the npm >= 11.5.1 requirement for OIDC trusted publishing.

Verification

• npm view npm@latest engines -> node: ^22.22.2 || ^24.15.0 || >=26.0.0
• npm view npm@11 engines -> node: ^20.17.0 || >=22.9.0
• Markdown is excluded from the Biome check config, so no lint delta for the docs change

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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