v1.0.0

First release, by Louis Wright.

• Internal link graph from built HTML (relative, root-relative, same-origin absolute, <base href>, clean URLs).
• Orphan pages, unreachable clusters, nofollow-only, noindex-only and script-only inbound links.
• Click depth from the homepage (or --start) with --max-depth.
• Single-inbound-link (info) and dead-end pages.
• Text/JSON/SARIF/Markdown output, --fail-on, exit codes 0/1/2, allowlist with expiry, severity overrides.
• Composite GitHub Action with job summary.