Function commit

examples/ts-react-chat/src/routes/threads.tsx:186–191

(next: Array<ThreadMeta>)

  }, [])

  const commit = (next: Array<ThreadMeta>) => {
    const sorted = [...next].sort(byRecency)
    threadsRef.current = sorted
    setThreads(sorted)
    writeIndex(sorted)
  }

  const createThread = (): ThreadMeta => {
    const thread: ThreadMeta = {