Struct ShellEnv 

pub struct ShellEnv {
    pub env: Vec<(String, String)>,
    pub cwd: PathBuf,
    pub output: UnboundedSender<ShellOutputLine>,
    pub cancel: CancellationToken,
}

Everything a run needs: the complete process environment, the starting working directory, a sink for output lines, and a cooperative cancellation signal.

env is the complete environment (the executor composes process env + beam env before calling execute); every entry starts as an exported shell variable.

Fields

env: Vec<(String, String)>

cwd: PathBuf

output: UnboundedSender<ShellOutputLine>

cancel: CancellationToken