Model picker rendered as a legible cost/latency/quality Pareto scatter: the frontier is a rising line of solid nodes (quality can't rise without moving right into cost), dominated models are hollow nodes below it joined by a connector whose length is the quality you'd forfeit, and a readout names the selection with its three numbers plus the concrete delta once per commit.
pnpm dlx shadcn@latest add "https://design.helpmarq.com/r/picker-pareto-frontier.json"