FFI Design Skill Overview Expert skill for designing and implementing foreign function interfaces to native code. Capabilities - Design FFI declaration syntax - Implement type marshaling between languages - Handle C calling conventions (cdecl, stdcall, fastcall) - Implement callback support (native calling managed) - Handle string encoding conversions - Implement struct layout matching (padding, alignment) - Design memory ownership transfer rules - Support dynamic library loading Target Processes - ffi-implementation.js - interpreter-implementation.js - bytecode-vm-implementation.js - code-ge…