engines-gauge v1.0.0

First release, by Louis Wright.

• Sources: engines.node, GitHub Actions setup-node versions (literal, node-version-file, and ${{ matrix.* }} lists including include:), .nvmrc, .node-version, .tool-versions, Volta, Dockerfile FROM node:*, and @types/node.
• Dependency engines from package-lock.json (v2/v3) or installed node_modules, production and dev separately, with the minimum Node version that satisfies everything.
• Node release schedule built in (LTS codenames, EOL dates) for lts/*-style aliases and EOL warnings.
• Rules: engines-invalid, dependency-engines-conflict, nvmrc-outside-engines, ci-outside-engines, ci-missing-minimum, engines-missing, runtime-pin-outside-engines, dev-dependency-engines-conflict, types-node-ahead, ci-missing-pinned, engines-eol, ci-eol.
• Text/JSON/SARIF/Markdown output, --fail-on, exit codes 0/1/2, allowlist with expiry, severity overrides.
• Composite GitHub Action with job summary.