v0.9.1

Internal

• Re-pinned every GitHub Actions dependency to its Node 24 runtime major (actions/checkout v7, actions/setup-node v6, pnpm/action-setup v6, actions/cache v6, actions/deploy-pages v5), clearing GitHub's Node 20 runtime deprecation warning that surfaced on the v0.9.0 publish run. Workflow-only change; the published package is byte-identical to v0.9.0.