v4.12.0

What's Changed

• docs: cross-link all worked-example reports (LED-3462) by @infracore in #137
• feat(check): zero-config PR safety gate — no init + secret scan (30-day move) by @infracore in #138
• chore(release): fix dep vulns + bump 4.12.0 (publish prep) by @infracore in #139

Full Changelog: v4.11.1...v4.12.0