This PR adds a link to the corresponding paper, [ChemLabs on ChemO: A Multi-Agent System for Multimodal Reasoning on IChO 2025](https://huggingface.co/papers/2511.16205), to the dataset card.
It also updates the `task_categories` metadata to include `image-text-to-text`, reflecting the multimodal nature of the dataset as described in the paper abstract.
