chore: prepare 0.0.27 release

[freshtechbro]

Summary

• Bump package and extension version owners to 0.0.27
• Update release docs, package tarball references, and active release evidence ledger
• Preserve v0.0.26 as historical release evidence

Verification

• npm run version:check
• node scripts/docs-drift-check.mjs
• node scripts/audit-zombie-files.mjs
• node scripts/chrome-store-compliance-check.mjs
• npm run lint
• npm run typecheck
• npm run build
• npm run extension:build
• npm run test
• npm run test:release-gate
• ./skills/opendevbrowser-best-practices/scripts/validate-skill-assets.sh
• npx opendevbrowser --help
• npx opendevbrowser help
• git diff --check
• npm pack
• npm run extension:pack