Driver

Cut the v3.1.0 release (dev → main): the governed-looping feature (#594), the interactive site game (#585), and the dev-cycle fixes / CI / dependency bumps landed since v3.0.0.

Scope

• CHANGELOG.md: add the v3.1.0 entry (grouped feat / fix / changed).
• site/index.html: bump the seven version strings (JSON-LD softwareVersion + dateModified, hero pill apexyard v3.1, hero link text + href v3.1.0, releases-shipped count + (v0.1 → v3.1) range) per the /release runbook.
• Open the release PR (base main), tag v3.1.0 on the squash commit, then /release-sync.

Acceptance Criteria

• CHANGELOG v3.1.0 entry merged to main.
• Site version strings match CHANGELOG (site-counts CI green).
• v3.1.0 tag is an ancestor of main.
• main → dev sync PR opened after the release.

Glossary