Function downloadAndExtract

downloadAndExtract(
    url: string,
    cacheDir: string,
    sha256?: string,
    noCache?: boolean,
): Promise<{ cached: boolean; dir: string }>
Download a .tar.gz archive from url, extract it to a subdirectory of cacheDir, and return the path to the extracted directory.

Caching: if the directory already exists the download is skipped entirely. Pass noCache: true to force re-download.
Parameters
- url: string
  HTTPS (or HTTP) URL to the archive
- cacheDir: string
  Local directory where archives are cached
- Optionalsha256: string
  Optional expected SHA-256 hex digest for integrity check
- noCache: boolean = false
  When true, re-download even if the extracted dir exists
Returns Promise<{ cached: boolean; dir: string }>
- Defined in packages/virage-core/src/eval/archive.ts:86