gemma4d-rust-mlx-ffi

name	gemma4d-rust-mlx-ffi
description	Use for Rust-to-MLX native C/C++ FFI work: opaque handles, C ABI, build.rs/CMake, MLX lifetime safety, native smoke tests, and unsafe Rust review.

Gemma4D Rust/MLX FFI

Trigger

Use for native MLX shim, Rust FFI wrappers, CMake/build.rs integration, unsafe Rust, or ABI changes.

Rules

• Keep the ABI narrow and C-compatible.
• Rust sees opaque handles only.
• No C++ exceptions cross the ABI.
• No Rust panic crosses the ABI.
• Add lifecycle tests for every handle.
• Document ownership transfer and thread-safety assumptions.

Checklist

• Header updated in native/gemma4_mlx/include/.
• Rust wrapper updated in crates/gemma4d-ffi.
• Build works through Cargo.
• Null/error/lifecycle tests pass.
• Unsafe blocks document invariants.