cyboflow

Cut a Cyboflow release end-to-end — run the full test gate, bump the version + changelog, build four signed/notarized macOS DMGs (stable + dev, arm64 + x64), publish both R2 update feeds (the in-app update channel), and cut the GitHub release. Use when asked to cut/ship/publish a release, make a release build, or roll a new version. Follows docs/RELEASE-RUNBOOK.md.