gmeow-gts

Thin LuaJIT FFI bindings over the Rust-backed libgts C ABI. The module
copies and frees C ABI buffers/errors internally and exposes Lua strings,
tables, and structured error objects to callers. This source-only rock
requires LuaJIT FFI and a separately installed libgts shared library,
provided through GTS_LIBGTS or the platform dynamic loader.