v1.0.0

First release, by Louis Wright.

• Head scripts without defer/async/module, synchronous body scripts that block parsing, document.write.
• Render-blocking stylesheets: gzip budget per page, count, @import chains (files and inline), print CSS without media, stylesheets placed after sync scripts, missing critical CSS.
• Third-party render-blocking resources without preconnect.
• Text/JSON/SARIF/Markdown output, --fail-on, exit codes 0/1/2, allowlist with expiry, severity overrides.
• Composite GitHub Action with job summary.