- Create CLAUDE.md with package-specific conventions and commands
- Replace fmt.Errorf with coreerr.E() in test mock (updater_test.go)
- Replace os.ReadFile/os.WriteFile with go-io in build/main.go
- Add unit tests for filterReleases, determineChannel, GetDownloadURL,
formatVersionForDisplay, formatVersionForComparison, and default
cases in startGitHubCheck/startHTTPCheck
- All targeted functions now at 100% coverage
Co-Authored-By: Virgil <virgil@lethean.io>