update README.md

docs(readme): use refs/heads/master raw installer URL

fix(install): correct raw URL branch and trap cleanup

fix(build): track cmd entrypoint for releases

fix(release): use explicit main.go path for goreleaser

chore: remove deprecated install-wrapper script

chore(release): add goreleaser workflow and installer script

Enhance README and code to clarify symlink usage for wrapper commands and improve configuration handling

支持 wrapper 的方式包装为其它命令，但是 ai agent会有不断的 ask 问题

init code

add .gitignore