vortex-fs — Virtual file system with deterministic fault injection.

Provides a [VortexFs] trait that mirrors std::fs operations. Two implementations are included:

• [RealFs] — production pass-through to std::fs (zero overhead).
• [SimFs] — in-memory filesystem with configurable fault injection.

Example

use vortex_fs::{SimFs, VortexFs};

let mut fs = SimFs::new(42);
fs.write_file("/data/hello.txt", b"world").unwrap();
let data = fs.read_file("/data/hello.txt").unwrap();
assert_eq!(data, b"world");