Raw FFI bindings for the Astrid OS System API (The Airlocks).
This crate defines the absolute lowest-level, mathematically pure ABI.
Every single parameter and return type across the WASM boundary is
represented as raw bytes (Vec<u8>).
This provides true OS-level primitiveness: file paths can contain non-UTF-8
sequences, IPC topics can be binary hashes, and the Kernel never wastes CPU
validating string encodings. All ergonomic serialization is handled entirely
by the astrid-sdk User-Space layer.