Function truncate

src/utils/ui-limits.ts:31–38

(s: string | null)

  // Truncate each side to UI_MAX_DIFF_BYTES, with a marker
  const truncate = (s: string | null): string | null => {
    if (s === null) return null;
    if (s.length <= UI_MAX_DIFF_BYTES) return s;
    const half = Math.floor(UI_MAX_DIFF_BYTES / 2);
    return s.slice(0, half) +
      `\n\n... [${(s.length - UI_MAX_DIFF_BYTES).toLocaleString()} bytes elided for display — full content will be written] ...\n\n` +
      s.slice(-half);
  };

  return {
    path,