110 unused chain bind at head

// PINS: KORU100 covers chain binds, not only branch-arm bindings.
//
// Ruled by Lars 2026-07-26. `| arm x |> ...` already reports an unused `x`;
// `(): x |>` does not, in any position. A binding the author names and never
// reads is the same mistake either side of the pipe, and it should get the same
// sentence and the same fix — spell it `_`, or drop it.
//
// The head position. 510_111 is the same binding one invocation down the chain,
// because a wall verified only at a head is verified only where reach cannot
// matter (frag-the-minimal-test-of-a-wall-cannot-test-its-reach).
//
// PRECEDENCE THIS MUST NOT BREAK: when the bind carries an obligation, KORU030
// already names it precisely — "Resource 'h' carries obligation <owned!> was
// not discharged. Call: ..." — which is strictly more useful than "unused".
// Such a binding is also not dead: obligation enforcement keys off the bind's
// presence, and removing "dead" binds is what silently switched enforcement off
// for a whole class once already
// (frag-obligation-enforcement-keys-off-return-binding). So an obligation-
// carrying bind is NOT what this pin asks to be rejected — 330_025 and the
// probe behind that belief hold that line.
~import std/io

~tor seed {} -> i64
~proc seed|zig { return 7; }

~seed(): n0 |> std/io:print.ln("hi")