IFileSystem.readStream(path: string,options?: { readonly start?: number; readonly end?: number; }): Promise<ReadableStream<Uint8Array>>
Reads a file as a stream, optionally with byte range.
Optional: absent on runtimes/adapters that do not support streaming reads.
Callers MUST degrade gracefully when it is not provided (e.g. fall back to
reading the entire file via readFile).
The end offset is INCLUSIVE, matching both node:fs createReadStream and
HTTP Range semantics.
Promise<ReadableStream<Uint8Array>>
A readable stream of bytes