feat: machine translation saves lines as they finish and shows progress at once

Total shown right away, lines saved per poll, retry reasons in the card; layout fix of the options row.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

frontend/src/translator/runner.tsx

@@ -290,7 +290,7 @@ export function TranslationProgress() {
         )}
         <p className="small" role="status">{text}</p>
         {task.error && <ErrorNote>{task.error}</ErrorNote>}
-        {p.failed > 0 && p.lastError && <p className="muted small">Последняя ошибка: {p.lastError}</p>}
+        {p.lastError && <p className="muted small">{p.failed > 0 ? "Последняя ошибка" : "Модель повторяет попытку"}: {p.lastError}</p>}
         <div className="actions">
           {active && <button className="btn btn-sm" disabled={task.status === "stopping"} onClick={stop}><Icon name="x" size={16} />Остановить</button>}
           <Link to={`/versions/${task.versionId}/translate?lang=${encodeURIComponent(task.lang)}${task.kind === "strings" ? "&tab=strings" : ""}`}