[codex] Add repo audit mode

[PSkinnerTech]

Summary

• Adds Phase B repository audit mode with detect-repo and audit-repo CLI commands.
• Adds repo detection, static HTML route discovery, explicit preview-server auditing, repo evidence in JSON/Markdown reports, and repo source findings.
• Hardens release gates for auto-detected static output, restricted preview probing, packaged source citations, and explicit preview precedence.
• Updates CHANGELOG.md, README, skill wrapper guidance, validation, fixtures, golden output, and test coverage.

Why

This moves OpenClaw from page/file audits toward the intended deterministic repo-to-audit workflow: inspect a source repo, discover auditable surfaces, run bounded evidence collection, and emit auditable SEO/GEO findings without making unsupported ranking claims.

Validation

• npm test - 134/134 passing
• npm run validate - ok true, 73 required files, 90 source pages, 41 framework citations, 26 source-map entries, 34 rules
• npm pack --json --workspace packages/cli packed src/source-map.json
• Packed tarball smoke: installed-style CLI audit emitted 26 top-level sources
• Final read-only review subagent: PASS, no blocking issues in db3df31..HEAD

Notes

• PR is draft by default per the publish workflow, ready for final human review before merge.