Hello World through C

# Hello World through C (design/cores.md, "Hello World at every level"): no std, only CNC, which C
# calls need. The call is a `no_check` site, marked: the marker is the Ground's since IEG was
# dissolved (owner, 2026-10-12), so it is written everywhere, as the `vouch` power is listed.

extern.C fn write ['fd': int32, 'buf': ptr[uint8], 'len': uint64] -> int64;

MAIN {
    let 'text' := "Hello, world!
";
    no_check let 'n' := write[1, lend 'text', 14];
}