Function resolve_sandbox_name

crates/openshell-cli/src/main.rs:211–223

Resolve a sandbox name, falling back to the last-used sandbox for the gateway. When `name` is `None`, looks up the last sandbox recorded for the active gateway. Prints a hint when falling back so the user knows which sandbox was chosen.

(name: Option<String>, gateway: &str)

/// gateway. Prints a hint when falling back so the user knows which sandbox
/// was chosen.
fn resolve_sandbox_name(name: Option<String>, gateway: &str) -> Result<String> {
    if let Some(n) = name {
        return Ok(n);
    }
    let last = load_last_sandbox(gateway).ok_or_else(|| {
        miette::miette!(
            "No sandbox name provided and no last-used sandbox.\n\
             Specify a sandbox name or connect to one first: openshell sandbox connect <name>"
        )
    })?;
    eprintln!("{} Using sandbox '{}' (last used)", "→".bold(), last.bold());
    Ok(last)
}

// Custom root help stays hand-authored so commands can be grouped into product
// areas without relying on clap's default subcommand listing. User-facing