Suppress stack trace on workspace activate for non-existent workspace

def workspace_activate(workspace_name: str = typer.Argument(..., help="Workspace name")) -> None:

    """Activate workspace for default command targets."""

    normalized = normalize_workspace_name(workspace_name)

    try:

        set_active_workspace(normalized)

    except ValueError as e:

        console.print(f"[red]{e}[/red]")

        raise typer.Exit(1)

    console.print(f"[green]Workspace '{normalized}' is now active.[/green]")