//! Raw bindings to the `execsandbox` WASM import module. Signatures and
//! semantics are fixed by the host's ABI (spec section 5) and must not be
//! changed here; see `.claude/rules/abi-boundary.md`.
//!
//! Only built for a wasm32 target, since `wasm_import_module` is only
//! meaningful there. `lib.rs`'s `Host` trait binds these to a safe,
//! testable wrapper.
extern "C"