Function run_captured 

pub fn run_captured(
    files: &[(PathBuf, TaskFile)],
    name: &str,
    args: &[String],
    cwd: &Path,
) -> Result<Output, RunError>

Like run, but captured: run name and its Requires: chain across the layered files with output aggregated across steps into a single std::process::Output (its status is the failing step’s, or the last on success). For an embedder (a TUI, an editor) that wants the text rather than a stream. Also trusted: no agent gate.