Method runner

src/services/token_manager.py:600–606

()

            return await existing_task

        async def runner() -> bool:
            try:
                return await self._refresh_at_inner(token_id)
            finally:
                current = self._refresh_futures.get(token_id)
                if current is task:
                    self._refresh_futures.pop(token_id, None)

        task = asyncio.create_task(runner())
        self._refresh_futures[token_id] = task