The doctest imported `server::bps::log10_floor`, but the library crate is `settled_reach_server` — so `cargo test --doc` failed to compile the example (unresolved module `server`). Broken since the helper landed in #145; it only surfaces under `--doc`, not `--lib`, so the pre-push gate (which runs `--lib`) never caught it. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>