Function mkdir_run

Returns Promise<
    {
        errors?: { message: string; type: "error"
        | "warning" }[];
        model?: { data: unknown; kind: string };
        rendered: string;
        renderedErr?: string;
        status: "error" | "ok";
        trace?: {
            executed?: string;
            input: string;
            proposed: string;
            validated: boolean;
        };
    },
>

An envelope whose rendered text reports each directory and whose model lists per-target outcomes.