Function ExportDialog

src/components/ExportDialog.tsx:25–127

({
  content,
  defaultFilename,
  onDone
}: ExportDialogProps)

};
type ExportOption = 'clipboard' | 'file';
export function ExportDialog({
  content,
  defaultFilename,
  onDone
}: ExportDialogProps): React.ReactNode {
  const [, setSelectedOption] = useState<ExportOption | null>(null);
  const [filename, setFilename] = useState<string>(defaultFilename);
  const [cursorOffset, setCursorOffset] = useState<number>(defaultFilename.length);
  const [showFilenameInput, setShowFilenameInput] = useState(false);
  const {
    columns
  } = useTerminalSize();

  // Handle going back from filename input to option selection
  const handleGoBack = useCallback(() => {
    setShowFilenameInput(false);
    setSelectedOption(null);
  }, []);
  const handleSelectOption = async (value: string): Promise<void> => {
    if (value === 'clipboard') {
      // Copy to clipboard immediately
      const raw = await setClipboard(content);
      if (raw) process.stdout.write(raw);
      onDone({
        success: true,
        message: 'Conversation copied to clipboard'
      });
    } else if (value === 'file') {
      setSelectedOption('file');
      setShowFilenameInput(true);
    }
  };
  const handleFilenameSubmit = () => {
    const finalFilename = filename.endsWith('.txt') ? filename : filename.replace(/\.[^.]+$/, '') + '.txt';
    const filepath = join(getCwd(), finalFilename);
    try {
      writeFileSync_DEPRECATED(filepath, content, {
        encoding: 'utf-8',
        flush: true
      });
      onDone({
        success: true,
        message: `Conversation exported to: ${filepath}`
      });
    } catch (error) {
      onDone({
        success: false,
        message: `Failed to export conversation: ${error instanceof Error ? error.message : 'Unknown error'}`
      });
    }
  };

  // Dialog calls onCancel when Escape is pressed. If we are in the filename
  // input sub-screen, go back to the option list instead of closing entirely.
  const handleCancel = useCallback(() => {
    if (showFilenameInput) {
      handleGoBack();
    } else {