Function register_shell_commands 

pub fn register_shell_commands(cli: Command, prog_name: &str) -> Command

Attach the completion and man subcommands to the given root command and return it. Uses the clap v4 builder idiom (consume + return).

• completion <shell> — emit shell completion script to stdout Supported shells: bash, zsh, fish, powershell, elvish
• man — emit a man page to stdout