use std::error::Error;use tokio::io;use tokio::io::AsyncReadExt;use tokio::io::AsyncWriteExt;use crate::fs_helper::FsHelperRequest;use crate::fs_helper::FsHelperResponse;use crate::fs_helper::run_direct_request;pub fn main() -> ! {    let exit_code = match tokio::runtime::Builder::new_current_thread()        .enable_all()        .build()    {        Ok(runtime) => match runtime.block_on(run_main()) {            Ok(()) => 0,            Err(err) => {                eprintln!("fs sandbox helper failed: {err}");                1            }        },        Err(err) => {            eprintln!("failed to start fs sandbox helper runtime: {err}");            1        }    };    std::process::exit(exit_code);}async fn run_main() -> Result<(), Box<dyn Error + Send + Sync>> {    let mut input = Vec::new();    io::stdin().read_to_end(&mut input).await?;    let request: FsHelperRequest = serde_json::from_slice(&input)?;    let response = match run_direct_request(request).await {        Ok(payload) => FsHelperResponse::Ok(payload),        Err(error) => FsHelperResponse::Error(error),    };    let mut stdout = io::stdout();    stdout        .write_all(serde_json::to_string(&response)?.as_bytes())        .await?;    stdout.write_all(b"\n").await?;    Ok(())}