PR #75 made socket::serve return io::Result (fail-closed on bind), and updated
the daemon test caller, but the four call sites in colibri-client's
live_socket_check.rs were missed — leaving bare `serve(...).await;` on a
#[must_use] Result. That tripped `unused_must_use`, so
`cargo clippy --workspace --all-targets -- -D warnings` was RED on main.
Add `let _ =` (clippy's own suggestion) at the four spots — these are test
harness server tasks that run until shutdown, so the Result is intentionally
ignored.
Checks: cargo clippy --workspace --all-targets -- -D warnings now clean;
cargo fmt --check.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
