- util/cli.go: RunMark() now maps CLI flags into mark.Config and
delegates to mark.Run(); all core processing logic removed
- util/cli_test.go: absorb Test_setLogLevel from deleted main_test.go
- main.go, main_test.go: removed (entry point is now cmd/mark/main.go)
- Makefile: update build target to ./cmd/mark with -o mark
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>