v0.2.1
Self-contained metallib fix for cargo install from crates.io build.rs finds mlx.metallib from mlx-sys build output and copies it to ~/.mlx/lib/. At runtime, ensure_metallib() copies it next to the binary so MLX's co-located search finds it. No upstream patches needed. Removes [patch.crates-io] — fix works with stock mlx-sys from crates.io.