"use client"; import type { ChartProblem } from "@/lib/problems";import { RatioPie } from "@/components/RatioPie";import { TierNote, TierToggle } from "@/components/TimeControls";import { useChartSettings } from "@/lib/chart-settings"; // Model strings are free-form and often name several systems (see ModelsChart),// so classification is by keyword: an entry counts as open source if ANY// openly released (open-weights) model is credited on it, and as closed source// otherwise - including internal research systems, which are the epitome of// closed. The list covers the open-weights families likely to appear, not just// the ones present today, so future submissions classify correctly.const OPEN_WEIGHTS = /deepseek|glm|hunyuan|\bhy3\b|qwen|kimi|llama|mistral|seed prover/i; export function OpenSourceChart({ problems }: { problems: ChartProblem[] }) {  const { tier, setTier } = useChartSettings("open-source");   const scoped =    tier === "all" ? problems : problems.filter((p) => p.aiContribution === tier);   const open = scoped.filter((p) =>    OPEN_WEIGHTS.test(`${p.model} ${p.modelMaker ?? ""}`),  ).length;   return (    <RatioPie      note={<TierNote tier={tier} shown={scoped.length} total={problems.length} />}      controls={<TierToggle value={tier} onChange={setTier} />}      title="Closed vs. open source"      caption={`Solves where an openly released (open-weights) model contributed, across ${scoped.length} entries.`}      rows={[        { label: "Closed source", n: scoped.length - open, color: "var(--accent-blue)" },        { label: "Open source", n: open, color: "var(--accent-orange)" },      ]}    />  );}