Function list_asset_folder 

pub fn list_asset_folder(
    project_root: &Path,
) -> Result<AssetFolder, DiscoveryError>

#1883, slice 1b: the project’s assets/ folder, listed (bynk_emit::project::assets::AssetFolder::on_disk) for CompileOptions::asset_files. No file’s bytes are read here: the build reads only the files a declaration names. A missing folder is empty; an unlistable one is a DiscoveryError naming the folder.