Recorded via --record-durations on a quiescent tree: 479s serial
total, p50 92ms / p90 1.8s / max 31.4s — the top-heavy cost shape LPT
packing exists for. A hint, not a contract: refresh opportunistically
with bun run test:free --record-durations.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
