The update menu now shows one set of release notes instead of two competing versions.
- When notes for the running version are still unseen and a newer release is available, the menu shows only the newer version.
- Notes for the running version remain available when no update is being offered.
- A four-state regression matrix prevents the duplicate from returning.
The app and DMG are universal arm64 + x86_64 builds. This machine has no Developer ID certificate, so the DMG is ad-hoc signed and not notarized; macOS may require right-clicking the app and choosing Open once, as documented in the README.